quick fix spacebar dishes

hull() was not working properly with such a wide bottom shape - since envelope was using a bottom square that was 6.25uX6.25u. that might spell trouble for 2x2 POS keycaps though... this should be changed to a skin() function down the line

.tool-versions

@@ -0,0 +1 @@
+nodejs 14.1.0

CHANGELOG.md

@@ -0,0 +1,16 @@
+CHANGELOG:
+  V2.0.0:
+    * added $fa values for minkowski and shape - so you can customize how much rounding there is
+    * rejiggered `key.scad` pipeline for more clarity and less shapes
+    * implemented "3d_surface" dish - still in beta
+      * super cool though, you can even change the distribution of points on the surface! just make sure you use monotonically increasing functions
+    * created "hull" folder to house different ways of creating the overall key shape
+    * promoted "feature" folder to first-class folder with keytext and switch clearance as new residents
+    * wrote this changelog!
+    * implemented `$inner_shape_type`, use "flat" for less geometry or "disable" to make a completely solid key easily. didn't help render rounded keys though
+    * side-printed keycaps are first class! you can use the `sideways()` modifier to set up sideways keycaps that have flat sides to print on.
+    * it's much easier to make quick artisans now that the inside of the keycap is differenced from any additive features placed on top
+    * `$linear_extrude_shape` and `$skin_extrude_shape` retired in favor of `$hull_shape_type`
+    * added regular_polygon shape and octagonal and hexagonal key profiles
+    * added beta kailh choc
+    * Finally got ISO Enter working correctly!

LICENSE.md

@@ -0,0 +1,675 @@
+### GNU GENERAL PUBLIC LICENSE
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+Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+#### 15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
+WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
+DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+#### 16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
+CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
+NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
+LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
+PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+#### 17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+### How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+To do so, attach the following notices to the program. It is safest to
+attach them to the start of each source file to most effectively state
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+        <one line to give the program's name and a brief idea of what it does.>
+        Copyright (C) <year>  <name of author>
+
+        This program is free software: you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation, either version 3 of the License, or
+        (at your option) any later version.
+
+        This program is distributed in the hope that it will be useful,
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
+        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+        GNU General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper
+mail.
+
+If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+        <program>  Copyright (C) <year>  <name of author>
+        This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+        This is free software, and you are welcome to redistribute it
+        under certain conditions; type `show c' for details.
+
+The hypothetical commands \`show w' and \`show c' should show the
+appropriate parts of the General Public License. Of course, your
+program's commands might be different; for a GUI interface, you would
+use an "about box".
+
+You should also get your employer (if you work as a programmer) or
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. For more information on this, and how to apply and follow
+the GNU GPL, see <https://www.gnu.org/licenses/>.
+
+The GNU General Public License does not permit incorporating your
+program into proprietary programs. If your program is a subroutine
+library, you may consider it more useful to permit linking proprietary
+applications with the library. If this is what you want to do, use the
+GNU Lesser General Public License instead of this License. But first,
+please read <https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,64 +1,113 @@
 # Parametric Mechanical Keycap Library
 
-![Welcome!](assets/welcome.png)
+![a slightly askew welcome picture](assets/welcome.png)
 
 This library is a keycap and keyset construction library for mechanical keyboards, written in openSCAD.
 
 Relevant links:
 * Thingiverse: https://www.thingiverse.com/thing:2783650
 * Shapeways: https://www.shapeways.com/designer/rsheldiii/creations
+* Buy me a coffee: https://ko-fi.com/rsheldiii, but only if you want to!
+
+# V2.0.0 Cutover
+
+As of February 19th, 2022, the v2.0.0 branch has been merged into master.
+
+This branch completely rewrote key.scad to be much simpler and faster. If you're just starting out, please use master and report any bugs you find.
+
+If you branched off this repo previously, merging to master will probably break any additions you've made. If you need the prior version of the code for whatever reason, v1.1.0 is master just before the v2.0.0 merge. I will be backporting bugfixes to the v1 branch, so if you see v1.1.1 or higher, use that instead.
 
 ## How to run
 
-#### Thingiverse Customizer
+#### OpenSCAD Proper (recommended way)
 
-The easiest (though not the best) way to run this program is to boot it up in [Thingiverse's Customizer](https://www.thingiverse.com/apps/customizer/run?thing_id=2783650). Explanations of each option are provided, as well as some default variables. Twiddle the variables to see how the keycap changes!
+If you are technically inclined at all, this is definitely the best way to run the code. It's not very hard!
 
-#### OpenSCAD Customizer
+First, you'll need OpenSCAD: http://www.openscad.org/downloads.html. I highly recommend installing the development snapshot, as they generally support more features and are relatively stable. Development snapshots are listed in their own section on the downloads page.
 
-If you find that the Thingiverse Customizer is timing out, but you're not technically inclined enough to start programming in OpenSCAD, you can look into [getting OpenSCAD's customizer working](https://github.com/rsheldiii/KeyV2/wiki/Getting-the-OpenSCAD-Customizer-working).
+After you have openSCAD installed, you need to download the code and run it. running `git clone https://github.com/rsheldiii/openSCAD-projects.git` if you have git, or downloading [this zip](https://github.com/rsheldiii/openSCAD-projects/archive/master.zip) and extracting the directory should do it. 
 
-#### OpenSCAD Proper
+To make your own key, all you need to do is open `keys.scad` with openSCAD and modify this line:
 
-First, you'll need OpenSCAD: http://www.openscad.org/downloads.html. I highly recommend installing the development snapshot, as they are much further along than the current stable release (as of writing, 2015.03-3).
+```
+dcs_row(5) legend("⇪", size=9) key();
+``` 
 
-After you have openSCAD installed, you need to download the code and run it. running `git clone https://github.com/rsheldiii/openSCAD-projects.git` if you have git, or downloading [this zip](https://github.com/rsheldiii/openSCAD-projects/archive/master.zip) and extracting the code should do it. Then all you need to do is open `keys.scad` with openSCAD and you are set! It is possible to edit this project with an external editor by checking off Design => Automatic Reload and Preview in OpenSCAD.
+To be whatever you want. For example, this is for a ctrl key on an OEM keyboard:  
+
+```u(1.25) oem_row(3) legend("ctrl", size=4.5) key();```
+
+It is possible to edit this project with an external editor by checking off Design => 'Automatic Reload and Preview' in OpenSCAD.
 
 All examples below assume you are running the library on your computer with OpenSCAD.
 
-## Let's Go! I wanna make a custom keycap!
+#### OpenSCAD Customizer
 
-At the highest level this library supports Cherry and Alps switches, and has pre-defined key profiles for SA, DSA, DCS, G20 and (some form of) OEM keycaps. `keys.scad` is meant as an entry point for everything but the most technical use. Pre-programmed key profiles can be found at the `key_profiles` directory.
+If you're not technically inclined enough to start programming in OpenSCAD (it's easier than you think), you can look into [getting OpenSCAD's customizer working](https://github.com/rsheldiii/KeyV2/wiki/Getting-the-OpenSCAD-Customizer-working).
 
-Every key starts with defaults that are overridden by each function call. The simplest cherry key you can make would be:
+`customizer.scad` is auto-generated from the other files in this repository due to a quirk with how OpenSCAD shows customizer settings. It should be perpetually kept up to date, but there may be some bugs. feel free to open an issue if you find one!
+
+#### Thingiverse Customizer
+
+The easiest and buggiest way to run this program is to boot it up in [Thingiverse's Customizer](https://www.thingiverse.com/apps/customizer/run?thing_id=2783650). Explanations of each option are provided, as well as some default variables. Twiddle the variables to see how the keycap changes!
+
+Unfortunately I don't think I can update the Thingiverse customizer without breaking it, so you don't get all the cool new features I've been developing over the past couple years.
+
+## High-level overview
+
+This library supports Cherry and Alps switches, and has pre-defined key profiles for SA, DSA, DCS, G20, Hi-Pro and (some form of) OEM keycaps. `keys.scad` is the entry point for everything but the most technical use. Pre-programmed key profiles can be found in the `key_profiles` directory.
+
+Every key starts with default settings (provided in `settings.scad`) that are overridden by each function call. The simplest key you can make would be:
 
 ```
-cherry() key();
+key();
 ```
 ![a bog-standard cherry key](assets/example1.JPG)
 
 
-
-which is a bog-standard DCS row 5 keycap. To change key profile or make varying width keys, you can use the row and unit length functions, like so:
+which is a bog-standard DCS row 5 (number / function row) keycap. To change how the key is generated, you can modify the settings directly or add predefined modifier functions like so:
 
 ```
-sa_row(2) 2u() cherry() key();
+// directly modified setting
+$stem_inset = 1;
+// settings changed through modifier function
+sa_row(2) 2u() key();
 ```
 
+You can chain as many modifier functions as you like!
+
 ![a 2 unit SA row 2 cherry key](assets/example2.JPG)
 
-## What if I want to customize my keycaps?
+## Modifier functions
 
-There is a bevy of supporting functions to customize your keycaps. You can add a brim to more easily print the stem, switch up the stem support type, make 2x2 keycaps for a POS system, add legends, rotate stems, and more. These functions can be found in `key_profiles/`, `key_sizes.scad`, `key_transformations.scad`, and `key_types.scad` currently, and can be referenced directly in `keys.scad`. For a full list of helper functions with explanations, [Check out the wiki!](https://github.com/rsheldiii/KeyV2/wiki/KeyV2-Helper-Documentation)
+There is a bevy of supporting functions to customize your keycaps. You can add a brim to more easily print the stem with `brimmed_stem_support`, make 2x2 keycaps with `2u() 2uh()`, add legends, rotate stems, and more. All these functions manipulate the settings available to you in [`settings.scad`](https://github.com/rsheldiii/KeyV2/blob/master/src/settings.scad), though [some of them](https://github.com/rsheldiii/KeyV2/blob/851ececdb297c77bfbcd0a7cb4cdbc5e21970396/src/key_transformations.scad#L128) are quite complex.
+
+These modifier functions can be found in [`key_profiles/`](https://github.com/rsheldiii/KeyV2/blob/master/src/key_profiles) for different keycap profiles, [`key_types.scad`](https://github.com/rsheldiii/KeyV2/blob/master/src/key_types.scad) for predefined settings for common keys (spacebar, left shift, etc), [`key_sizes.scad`](https://github.com/rsheldiii/KeyV2/blob/master/src/key_sizes.scad) for common unit sizes, and [`key_transformations.scad`](https://github.com/rsheldiii/KeyV2/blob/master/src/key_transformations.scad) for everything else. I encourage you to do some sleuthing but for a list of (most) helper functions with explanations, [Check out the wiki!](https://github.com/rsheldiii/KeyV2/wiki/KeyV2-Helper-Documentation)
+
+These modifier functions may not cover every use case; in that case, you may have to write some SCAD yourself.
+
+## Layouts
+
+new to the library and still in a beta state, layouts allows you to generate an entire layout for a keyboard!
+
+It is recommended to print layouts with a brim that extends to the next key.
+
+```
+60_percent_default("dcs") key();
+```
+
+![a standard 60 percent layout](assets/layout.png)
+
+layouts accept children, so you can use them as a chained function like other modifiers. Be wary of accidentally overriding something the layout does for you though.
 
 #### Example customizations
 
-If you wanted to generate some 2u stabilized keycaps for an Ergodox for instance, you could do something like this:
+Let's say you wanted to generate some 2u stabilized keycaps for an Ergodox, you could do something like this:
 
 ```
 legends = ["Enter", "Escape", "Tab", "Shift"];
 for(y=[0:3]) {
-  translate_u(0,y) 2u() dsa_row() stabilized() cherry() key(inset=true) { keytext(legends[y], [0,0], 6); }
+  translate_u(0,y) 2u() dsa_row() stabilized() cherry() legend(legends[y], [0,0, 6]) key();
 }
 ```
 
@@ -78,19 +127,21 @@ cherry() key() {
 
 Artisan support also supports _subtracting_ children by doing `key(inset=true) { ... }`, which is super helpful if you want to make keycaps with legends that are not text. The children will be placed just above the middle of the dish as per usual; you will need to translate them downwards (`ex translate([0,0,-1])`) to get them to 'dig in' to the top of the key.
 
+## Tips and tricks
+
+Looking for information or something specific? you could try checking out the [tips and tricks](TIPS_AND_TRICKS.md) section, or the [examples](/examples) directory.
+
 ## What if I want to get _really_ technical?
 
-At the base level this library should function well as a key profile design library. by loading up `src/key.scad` (notice no s) you can tweak variables in `src/settings.scad` to prototype your own profiles. There are currently 44 different settings to tweak in `src/settings.scad` including width height and depth of the keycap, dish tilt, top skew, fonts, wall thickness, etc. If you want to see the full list of settings, feel free to browse the file itself: [settings.scad](https://github.com/rsheldiii/KeyV2/blob/master/src/settings.scad) it has lots of comments to help you get started.
-
-### What if I want to get _even_ more technical than that?
-
 Now we're talkin!
 
-This library should be abstract enough to handle new dish types, keystems, and key shapes, in case you want to design your own Typewriter-style keycaps, support buckling spring keyboards or design some kind of triangular dished profile. `src/shapes.scad` `src/stems.scad` and `src/dishes.scad` all have a 'selector' module that should allow you to implement your own creations alongside what already exists in their constituent folders.
+At the base level this project should function well as an intensive key profile design library. by loading up `src/key.scad` (notice no s) you can tweak variables in `src/settings.scad` to prototype your own profiles. `key.scad` There are currently ~~44~~ a lot of different settings to tweak in `src/settings.scad` including width height and depth of the keycap, dish tilt, top skew, fonts, wall thickness, etc. If you want to see the full list of settings, feel free to browse the file itself: [settings.scad](https://github.com/rsheldiii/KeyV2/blob/master/src/settings.scad) it has lots of comments to help you get started.
+
+This library should also be abstract enough to handle new dish types, keystems, key layouts, key profiles, and key shapes, in case you want to design your own Typewriter-style keycaps, support buckling spring keyboards or design some kind of triangular dished profile. `src/shapes.scad` `src/stems.scad` and `src/dishes.scad` all have a 'selector' module that should allow you to implement your own creations alongside what already exists in their constituent folders.
 
 If you're interested in this, it may help to read the [Technical Design of a keycap](https://github.com/rsheldiii/KeyV2/wiki/Technical-Design-of-a-Keycap) wiki page.
 
-Here's an example of tweaking the settings and code to make a 'stoinstancep sign' key profile:
+Here's an example of tweaking the settings and code to make a 'stop sign' key profile:
 
 In `key_shape()` in `shapes.scad`:
 
@@ -138,7 +189,7 @@ Prints from this library are still challenging, despite all efforts to the contr
 
 1. If your stem isn't fitting in the switch, try upping the slop factor, accessed by giving your keystem function a numeric value (eg `cherry(0.5) key()`). This will lengthen the cross and decrease the overall size of the keystem. The default value is 0.3, and represents millimeters. Note that even if you have a resin printer, you should probably keep the default value; keys printed with 0 slop will barely fit on the stem.
 
-2. If your keystem breaks off the bed mid-print, you can enable a brim by adding the `brimmed()` modifier. This will give a solid base for the keystem to anchor into.
+2. If your keystem breaks off the bed mid-print, you can enable a brim by adding the `brimmed_stem_support()` modifier. This will give a solid base for the keystem to anchor into.
 
 3. If you are unsatisfied with the quality of the top surface, you can try printing the keycap on a different surface than the bottom, though it may impact the quality of the stem.
 
@@ -147,6 +198,8 @@ Prints from this library are still challenging, despite all efforts to the contr
 That's it, if you have any questions feel free to open an issue or leave a comment on thingiverse!
 
 ## TODO:
- * replace linear_extrude_shape_hull with skin_extrude_shape_hull or something, to enable concave extrusions
- * replace current ISO enter shape with one that works for `skin()`
- * generate dishes via math?
+moved to [TODO doc](./TODO.md)
+
+## Contributions welcome
+
+ My lists of key profiles and layouts are not exhaustive at all, if you want to contribute feel free to make a PR with your changes and we can work together on getting it merged!

TIPS_AND_TRICKS.md

@@ -0,0 +1,73 @@
+# WIP Tips and Tricks section
+
+just want to make sure I put this here, I'm going to make this a much better document later
+
+## Fully sculpted caps
+
+Fully sculpted keycaps are caps that also tilt inwards / outwards, cupping your fingers a bit.
+
+Most profiles should support this now; you pass in a "column" value after the row value, and the cap will calculate how much extra height and tilt for that column.
+
+the way this works is the program projects a large, imaginary cylinder that it inscribes the top of the keycaps into. Thus, the height and tilt can be tweaked by changing the `$double_sculpt_radius`, which changes the radius of that imaginary cylinder.
+
+At the end of the day though, all the columnular sculpting is doing is adding extra height and y tilt to the top of the key. if you have some other aim than fitting to a cylinder you can control this directly with appropriate changes to `$top_tilt_y` and `$total_depth`, or perhaps changing the `side_tilt()` and `extra_side_tilt_height()` functions in [`functions.scad`](https://github.com/rsheldiii/KeyV2/blob/master/src/functions.scad) which are what the row profiles use.
+
+## skin mode
+
+SA, HiPro and DSA keycaps take _forever_ to render. This is a multifaceted issue that I don't want to get into here, but suffice to say _one_ of the reasons it takes so long is how the keycap is constructed from multiple, smaller slices. OpenSCAD takes more time to render the more objects you have, regardless of how they interact. Enter `$hull_shape_type = "skin"`.
+
+`skin()` is a list comprehension function available [here](https://github.com/openscad/list-comprehension-demos/blob/master/skin.scad). The gist of it is that instead of having x number of keycap slices unioned together, we give `skin()` a set of profiles and it makes a single object out of it for us. This reduces the number of objects per keycap, which makes it easier to render them.
+
+One current limitation of `skin()` is that I suck at math and can't translate [rounded_square](https://github.com/rsheldiii/KeyV2/blob/master/src/shapes/rounded_square.scad) into a function, which means that we miss out on the very nice bowing exhibited on these profiles. once we can translate that to math however, we'll be in business.
+
+## Printing upside down
+
+still in beta, but using `upside_down()` in a method chain will rotate keycaps to be upside down. This makes the stem print better and requires no support, but generally the top of the keycap comes out worse - unless it is flat. Worth noting that you can probably set `$stem_inner_slop` to 0 if you print upside down - elephant's foot is the largest contributor to stems not fitting correctly.
+
+### "doubleshot" letters with a regular printer
+
+While printing upside down, you can do yourself a favor and embed some legends! use code like below:
+
+```
+legends = ["F1", "1", "q", "a", "z", ""];
+for (x = [0:1:4]) {
+  translate_u(0,-x) legend(legends[x]) g20_row(3, 0) upside_down() {
+      $stem_support_type = "disable";
+      key(true);
+      dished() {
+        legends($inset_legend_depth);
+      }
+  }
+}
+```
+
+and comment out either `key(true)` or the whole `dished` segment. This code generates keycaps with inset legends and the legends that fit inside those insets.
+
+Run just the legends through your slicer first and make sure to turn off anything like skirts or brims, it should print your legends in a single layer on your print bed. Leave them there, swap filaments, and then print the rest of the keycaps around them in a different color. The result is pretty impressive. They aren't quite doubleshot, since the main benefit of doubleshots is the plastic goes all the way through the keycap, but they look incredibly impressive for what they are.
+
+### No stem support
+
+If you're printing updside down you'll want to disable stem supports. you can change the `$stem_support_type`, or just use the `no_stem_support()` modifier function
+
+## front print legends and location / font size
+
+still in beta, set `$front_print_legends = true` to have legends print on the front instead of the top of the keycaps.   
+
+## Clearance check
+
+doing some funky stuff and want to make sure your keycap won't hit the keyswitch? set `$clearance_check = true` and a red-colored depressed switch will show up in preview, cutting away at what contacts the switch.
+
+## Envelope
+
+the 'envelope' of a keycap is used to clip geometry - most notably the dishing at the top of the keycap. if something doesn't look right, you can drop `%envelope()` right next to `key()` to see if it's the envelope cutting things off:
+
+```
+g20_row() legend("Q", [0,0], 3) {
+   key();
+   %envelope();
+ }
+```
+
+## stem inset
+
+If you want the more refined top surface that printing upright brings, but you are having a bad time with elephant's foot, you can enable some `$stem_inset` and see if that helps. you'll have to figure out what support works best for you.

TODO.md

@@ -0,0 +1,13 @@
+TODO:
+  * implement key_shape_at_progress which allows you to query for the exact 2d outline of the keycap at a given height
+    * this makes certain functions easier - building the envelope for instance
+    * requires breaking out shape_slice, and creating a polygon of the skin_shape_slice slices
+  * dishes add / remove height from keycaps, particularly spherical dishes
+    * a bandaid solution would be to allow you to modify where the keytop is along the progression of the keycap
+      * you can't just set a new total_depth because of how width_difference and height_difference work
+    * the true solution would be to rewrite how the dishes work to make them very graduated at the edges
+  * implement regular polygon for skin extrusions
+  * switch to skin-shaped extrusions by default
+  * kailh choc has a non-square key unit; should I get that working for layouts etc? 
+  * move everything over to layouts requiring a child key
+  * add an "errors" or "warnings" or "suggestions" echo section in key.scad, right when the key is being made, so the errors don't get lost / repeated

customizer_base.scad

@@ -11,6 +11,8 @@ row = 1; // [5,1,2,3,4,0]
 // What does the top of your key say?
 legend = "";
 
+$using_customizer = true;
+
 include <src/settings.scad>
 
 include <src/key_sizes.scad>
@@ -18,8 +20,7 @@ include <src/key_profiles.scad>
 include <src/key_types.scad>
 include <src/key_transformations.scad>
 include <src/key_helpers.scad>
-
-use <src/key.scad>
+include <src/key.scad>
 
 key_profile(key_profile, row) legend(legend) {
   key();

examples/legends.scad

@@ -0,0 +1,32 @@
+include <../includes.scad>
+
+/* here's how to use the legends() command.
+   The first argument is the legend itself, which can also be a whole string.
+   The second argument is the "position" of the legend relative to center.
+   Legends currently have to all be inset or outset at the same time, but you
+   can have as many of them as you want.
+   The numbers used are some magic constant, so just fudge them until it looks good.
+*/
+
+/* $outset_legends = true; */
+legends = [
+  ["a", "b", "c", "d"],
+  ["e", "f", "g", "h"],
+  ["i", "j", "k", "l"],
+];
+
+$font_size = 4;
+
+for (x=[0:len(legends)-1]) {
+  translate_u(x,0) {
+    legend(legends[x][0], [-1,-1]) {
+      legend(legends[x][1], [-1,1]) {
+        legend(legends[x][2], [1,-1]) {
+          front_legend(legends[x][3]) {
+            key();
+          }
+        }
+      }
+    }
+  }
+}

examples/multimaterial_key_top.scad

@@ -0,0 +1,29 @@
+include <../includes.scad>
+
+/* use this file to generate multimaterial models for making keycaps with a
+   different material for the key top.
+
+   This would be great to use with flexible filament, to make squishy-topped
+   keys.
+
+   You don't need a multimaterial printer to use these files since it's hard
+   height cutoff. You could print the bottom, leave the prints on the bed, and
+   then print the top in a different material. Be careful though! your start
+   gcode may crash into the prints.
+*/
+
+depth = 1;
+// swap the debug()s to render opposite part
+/* debug() */ difference() { // intersection() {
+  key();
+  top_of_key() {
+    translate([-total_key_width(),-total_key_height(),-$total_depth - depth]) cube([total_key_width()*2, total_key_height()*2, $total_depth]);
+  }
+}
+
+debug() intersection() {
+  key();
+  top_of_key() {
+    translate([-total_key_width(),-total_key_height(),-$total_depth - depth]) cube([total_key_width()*2, total_key_height()*2, $total_depth]);
+  }
+}

examples/multimaterial_legend.scad

@@ -0,0 +1,16 @@
+include <../includes.scad>
+
+/* in this example we'll use some openSCAD to generate files for printing inset
+   legends with a multimaterial printer.
+*/
+
+legends = ["F1", "1", "q", "a", "z", ""];
+for (x = [0:1:4]) {
+  translate_u(0,-x) legend(legends[x]) dcs_row(x, 0) {
+    // swap the debug()s to render opposite part
+    debug() key(true);
+    /* debug() */ dished() {
+      legends($inset_legend_depth);
+    }
+  }
+}

examples/plate_generation.scad

@@ -0,0 +1,6 @@
+include <../includes.scad>
+
+// plates are currently generated via the same layout arrays as layouts are.
+// just pass the layout to plate() and it'll do it's job using hull().
+// still in beta
+plate(60_percent_default_layout);

examples/print_keycaps_on_their_side.scad

@@ -0,0 +1,28 @@
+include <../includes.scad>
+
+/* Printing keycaps on their side is an easy way to get a nice, smooth top
+   surface, with some caveats:
+   1. one of the sides won't look as good as the other
+   2. any amount of top tilt makes the sides of the keycap not flat, so we have
+      to force them to be flat by making the keytop a trapezoid
+
+  sideways() does the magic for you.
+
+  Note that this won't work at all with side sculpted keycaps, skin_shape_hull,
+  and double sculpted aka full sculpted keycaps either. Getting it to work with
+  skin_shape_hull is the easiest, getting it to work with full sculpting is a
+  lot harder, and side sculpting is obviously impossible by nature
+*/
+
+legends = ["F1", "1", "q", "a", "z"];
+for (x = [0:4]) {
+  translate_u(0,-x) dcs_row(x) sideways() front_legend(legends[x], size=5) {
+    $stem_support_type = "disable";
+    $dish_type = "disable";
+
+    /* $top_tilt = 30; */
+    union() {
+      key();
+    }
+  }
+}

examples/sa_ergo.scad

@@ -0,0 +1,53 @@
+include <../includes.scad>
+
+/*
+In this example, we harness full sculpting and simple_layout to make a set of SA
+keys that look a lot like the key wells on a dactyl, dactyl manuform, or kinesis
+
+SA keys render faster with skin_extrude_shape = true, but then they don't get
+the nice flaring on the sides... yet.
+*/
+
+// to turn on full sculpting
+$double_sculpted = true;
+// to make the font fit
+$font_size = 4;
+
+// change this to make the full sculpting more or less aggressive. 200 is default
+$double_sculpt_radius = 200;
+
+// This is the exact column stagger from the dactyl transposed onto the
+// rows of the preonic default layout. the second array is for modifying the
+// values up or down - making all the 0's -1's would make each key 1mm lower
+// for instance. I'd suggest going as low as you can without cutting off any stems
+extra_column_height = [5.64, 5.64, 0, -3, 0, 0, 0, 0, 0, -3, 0, 5.64, 5.64] + [0,0,0,0,0,0,0,0,0,0,0,0,0];
+// required for double_sculpted_column
+row_length = len(preonic_default_layout[0]);
+
+simple_layout(preonic_default_layout) {
+  // this union is here because, for some reason, you cannot modify special variables
+  // that are modified in the scope directly above.
+  union() {
+    // row declarations treat column 0 as perfectly center, so if we just used
+    // $column we'd have a ridiculously looking left-leaning keyboard.
+    // this function transforms the actual column value into a "2hands" column
+    // value, aka for a board with 2 "keywells", one for each hand
+    column_value = double_sculpted_column($column, row_length, "2hands");
+    /* echo("column value", column_value); */
+    sa_row($row+1, column_value){
+      // uh oh, now I need two of them...
+      union() {
+        // uncomment when prototyping for faster prototypes!
+        /* $dish_type = "disable"; */
+        /* $stem_support_type = "disable"; */
+
+        // here's where the magic happens and we actually add the extra column height
+        $total_depth = $total_depth + extra_column_height[$column];
+        key();
+
+        // this generates separate legends for the keys
+        /* legend(preonic_default_legends[$row][$column]) legends(); */
+      }
+    }
+  }
+}

examples/single_extruder_multimaterial_legends.scad

@@ -0,0 +1,34 @@
+include <../includes.scad>
+
+/* Don't have a multimaterial printer but still want cool "doubleshot" legends?
+   with a couple tricks, you can! We just have to print upside down with no
+   dish.
+
+   Here's how to use this file:
+
+   1. modify it as you see fit
+   2. render the legends and the keycaps separately
+   3. run the legends through your 3d printer. make sure they are a single layer
+   4. LEAVE THEM on the bed
+   5. change filaments
+   6. run the keycaps over the legends. MAKE SURE they line up! PrusaSlicer
+      centers models on the bed
+   7. voila!
+   8. use a powder-coated bed for extra points
+*/
+
+legends = ["F1", "1", "q", "a", "z", ""];
+for (x = [0:1:4]) {
+  translate_u(0,-x) dcs_row(x, 0) upside_down() legend(legends[x]) {
+    $dish_type = "disable";
+    $inset_legend_depth = 0.2; // whatever layer height you use
+
+    union() {
+      // swap the debug()s to render opposite part
+      debug() key(true);
+      /* debug() */ dished() {
+        legends($inset_legend_depth);
+      }
+    }
+  }
+}

includes.scad

@@ -0,0 +1,9 @@
+use <src/key.scad>
+
+include <src/settings.scad>
+include <src/key_sizes.scad>
+include <src/key_profiles.scad>
+include <src/key_types.scad>
+include <src/key_transformations.scad>
+include <src/key_helpers.scad>
+include <src/key_layouts.scad>

keys.scad

@@ -5,24 +5,16 @@
 // without having to rely on this file. Unfortunately that means setting tons of
 // special variables, but that's a limitation of SCAD we have to work around
 
-use <src/key.scad>
-
-include <src/settings.scad>
-include <src/key_sizes.scad>
-include <src/key_profiles.scad>
-include <src/key_types.scad>
-include <src/key_transformations.scad>
-include <src/key_helpers.scad>
+include <./includes.scad>
 
 
+// example key
+dcs_row(5) legend("⇪", size=9) key();
 
-u(1) choc() {
-  flared_support()  tined_stem_support() sa_row(1){
-    $stem_support_height = 2;
-    low_profile() {
-      key();
-    }
-  }
-}
+// example row
+/* for (x = [0:1:4]) {
+  translate_u(0,-x) dcs_row(x) key();
+} */
 
-/* translate_u(1,0) u(1) choc() row_profile("oem") low_profile() key(); */
+// example layout
+/* preonic_default("dcs") key(); */

keysets.scad

@@ -1,36 +0,0 @@
-/*use <key.scad>*/
-// NEED to include, not use this, even with the default variables set. don't know why
-include <keys.scad>
-
-60_percent = [
-  [1,1,1,1,1,1,1,1,1,1,1,1,1,2],
-  [1.5,1,1,1,1,1,1,1,1,1,1,1,1,1.5],
-  [1.75,1,1,1,1,1,1,1,1,1,1,1,2.25],
-  [2.25,1,1,1,1,1,1,1,1,1,1,2.75],
-  [1.25,1.25,1.25,6.25,1.25,1.25,1.25,1.25]
-];
-
-function sum(list, x=0) =
-  len(list) <= 1 ?
-    x + list[0] :
-    sum([for (x = [1: len(list) - 1]) list[x]], x+list[0]);
-
-for (row = [0:len(60_percent)-1]){
-  for(column = [0:len(60_percent[row])-1]) {
-    columnDist = sum([for (x = [0 : column]) 60_percent[row][x]]);
-    a = 60_percent[row][column];
-    translate_u(columnDist - (a/2), -row) g20_row(3) u(a) cherry() { // (row+4) % 5 + 1
-      if (a == 6.25) {
-        spacebar() key();
-      } else if (a == 2.25) {
-        lshift() key();
-      } else if (a == 2) {
-        backspace() key();
-      } else if (a == 2.75) {
-        rshift() key();
-      } else {
-        key();
-      }
-    }
-  }
-}

openscad.rb

@@ -5,12 +5,10 @@ module OpenSCAD
 
     Dir.chdir File.dirname(filename)
     lines = lines.flat_map do |line|
+      # please note we do not implement `use` at all
       if line =~ /(include|use)\s*<(.*)>/
         # File.readlines("./#{$2}")
         expand("./#{$2}")
-      # in lieu of actually implementing `use`, we can just cull this final line from key.scad
-      elsif line =~ /example\_key\(\);/
-        ""
       else
         line
       end

package.json

@@ -23,9 +23,9 @@
   "dependencies": {
     "gulp-changed": "^3.2.0",
     "gulp-changed-in-place": "^2.3.0",
-    "gulp-shell": "^0.6.5"
+    "gulp-shell": "^0.8.0"
   },
   "devDependencies": {
-    "gulp": "github:gulpjs/gulp#4.0"
+    "gulp": "4.0.2"
   }
 }

src/constants.scad

@@ -1 +1,4 @@
+// a safe theoretical distance between two vertices such that they don't collapse. hard to use
 SMALLEST_POSSIBLE = 1/128;
+$fs=0.1;
+$unit=19.05;

src/dishes.scad

@@ -4,6 +4,10 @@ include <dishes/cylindrical.scad>
 include <dishes/old_spherical.scad>
 include <dishes/sideways_cylindrical.scad>
 include <dishes/spherical.scad>
+include <dishes/squared_spherical.scad>
+include <dishes/squared_scoop.scad>
+include <dishes/flat.scad>
+include <dishes/3d_surface.scad>
 
 //geodesic looks much better, but runs very slow for anything above a 2u
 geodesic=false;
@@ -12,17 +16,22 @@ geodesic=false;
 module  dish(width, height, depth, inverted) {
     if($dish_type == "cylindrical"){
       cylindrical_dish(width, height, depth, inverted);
-    }
-    else if ($dish_type == "spherical") {
+    } else if ($dish_type == "spherical") {
       spherical_dish(width, height, depth, inverted);
-    }
-    else if ($dish_type == "sideways cylindrical"){
+    } else if ($dish_type == "sideways cylindrical"){
       sideways_cylindrical_dish(width, height, depth, inverted);
-    }
-    else if ($dish_type == "old spherical") {
+    } else if ($dish_type == "old spherical") {
       old_spherical_dish(width, height, depth, inverted);
+    } else if ($dish_type == "3d surface") {
+      3d_surface_dish(width, height, depth, inverted);
+    } else if ($dish_type == "flat") {
+      flat_dish(width, height, depth, inverted);
     } else if ($dish_type == "disable") {
       // else no dish
+    } else if ($dish_type == "squared spherical") {
+      squared_spherical_dish(width, height, depth, inverted=inverted);
+    } else if ($dish_type == "squared scoop") {
+      squared_scoop_dish(width, height, depth, inverted=inverted);
     } else {
       echo("WARN: $dish_type unsupported");
     }

src/dishes/3d_surface.scad

@@ -0,0 +1,16 @@
+include <../libraries/3d_surface.scad>
+
+module 3d_surface_dish(width, height, depth, inverted) {
+  echo(inverted ? "inverted" : "not inverted");
+  // scale_factor is dead reckoning
+  // it doesn't have to be dead reckoning for anything but sculpted sides
+  // we know the angle of the sides from the width difference, height difference,
+  // skew and tilt of the top. it's a pain to calculate though
+  scale_factor = 1.05;
+  // the edges on this behave differently than with the previous dish implementations
+  scale([width*scale_factor/$3d_surface_size/2,height*scale_factor/$3d_surface_size/2,depth])
+    rotate([inverted ? 0:180,0,180])
+      polar_3d_surface(size=$3d_surface_size, step=$3d_surface_step, bottom=-10);
+  /* %scale([width*scale_factor/$3d_surface_size/2,height*scale_factor/$3d_surface_size/2,depth]) rotate([180,0,0]) polar_3d_surface(bottom=-10); */
+
+}

src/dishes/flat.scad

@@ -0,0 +1,3 @@
+module flat_dish(width, height, depth, inverted){
+  cube([width + 100,height + 100, depth], center=true);
+}

src/dishes/spherical.scad

@@ -1,4 +1,8 @@
 module spherical_dish(width, height, depth, inverted){
+  // these variables take into account corner_radius and corner_sculpting, resulting in a more correct dish
+  // they don't fix the core issue though (dishes adding / subtracting height on the edges of the keycap), so I've disabled them
+  // new_width = $key_shape_type == "sculpted_square" ? width - distance_between_circumscribed_and_inscribed($corner_radius + $corner_sculpting(1)) : width;
+  // new_height = $key_shape_type == "sculpted_square" ? height - distance_between_circumscribed_and_inscribed($corner_radius + $corner_sculpting(1)) : height;
 
   //same thing as the cylindrical dish here, but we need the corners to just touch - so we have to find the hypotenuse of the top
   chord = pow((pow(width,2) + pow(height, 2)),0.5); //getting diagonal of the top

src/dishes/squared_scoop.scad

@@ -0,0 +1,34 @@
+module squared_scoop_dish(height, width, depth, r=0.5, inverted=false, num=4, den=5){
+  // changable numerator/denoninator on where to place the square's corners
+  // for example, num=2, den=3 means the dish will happen at 1/3 and 2/3 the
+  // width and the height.  Defaults to 4/5. Customizable when calling 
+  // this module
+  //
+  // This was initially intended for the scoop on the HiPro, since that's what
+  // it uses.  Use "hipro_row()" if that's what you'd like.  However, I do NOT
+  // know how close the inner square is for the HiPro keycaps.  In fact, it could
+  // just be a sphere, in which the "squared spherical" scoop is more appropriate.
+  // If, however, it the "squared scoop" makes sense, you can adjust where the square
+  // lands with the num (numerator) and den (denominator) variables.  For instance,
+  // "3" and "4" mean 3/4 of the width/height is where the flat part starts.
+
+  chord = pow(pow(height/2, 2) + pow(width/2, 2),0.5);
+  direction = inverted ? -1 : 1;
+
+  //This is the set of points to hull around for the scoop
+  points=[
+    [height/den - height/2, width/den - width/2, -chord],
+    [num*height/den - height/2, width/den - width/2, -chord],
+    [height/den - height/2, num*width/den - width/2, -chord],
+    [num*height/den - height/2, num*width/den - width/2, -chord]
+  ];
+
+  resize([height,width,depth])
+    hull() {
+      shape_slice(1,0,0);
+      for(i=[0:len(points)-1]) {
+        translate(points[i])
+          sphere(r=r,$fn=64);
+      }
+  }
+}

src/dishes/squared_spherical.scad

@@ -0,0 +1,22 @@
+module squared_spherical_dish(width, height, depth, inverted=false) {
+    chord = pow(pow(height / 2, 2) + pow(width / 2, 2),0.5);
+    direction = inverted ? -1 : 1;
+    r=max(height,width,chord) / 5;
+    // ^^^^^ Nothing special about this code to figure out r.
+    // I just modeled up 1u, 1.25u, 1.5u, 2u, 2.25u, and 2.75u
+    // keys and messed around until I came up with something that
+    // looked reasonable for all key sizes.  This just seems to work
+    // well for all sizes
+
+    translate([-width / 2, -height / 2, 0 * direction]) {
+      resize([width, height, depth])
+        hull() {
+          cube([chord,chord,0.001]);
+          // Use something larger in this translate than -depth 
+          // (like -chord) if you want more of a defined circle
+          // in the keywell
+          translate([chord/2, chord/2, -depth]) 
+            sphere(r=r, $fn=128);
+        }
+    }
+}

src/features.scad

@@ -0,0 +1,5 @@
+// features are any premade self-contained objects that go on top or inside
+
+include <features/key_bump.scad>
+include <features/clearance_check.scad>
+include <features/legends.scad>

src/features/clearance_check.scad

@@ -0,0 +1,24 @@
+// a fake cherry keyswitch, abstracted out to maybe replace with a better one later
+module cherry_keyswitch() {
+  union() {
+    hull() {
+      cube([15.6, 15.6, 0.01], center=true);
+      translate([0,1,5 - 0.01]) cube([10.5,9.5, 0.01], center=true);
+    }
+    hull() {
+      cube([15.6, 15.6, 0.01], center=true);
+      translate([0,0,-5.5]) cube([13.5,13.5,0.01], center=true);
+    }
+  }
+}
+
+//approximate (fully depressed) cherry key to check clearances
+module clearance_check() {
+  if($stem_type == "cherry" || $stem_type == "cherry_rounded"){
+    color($warning_color){
+      translate([0,0,3.6 + $stem_inset - 5]) {
+        cherry_keyswitch();
+      }
+    }
+  }
+}

src/features/legends.scad

@@ -0,0 +1,26 @@
+module keytext(text, position, font_size, font_face, depth) {
+  woffset = (top_total_key_width()/3.5) * position[0];
+  hoffset = (top_total_key_height()/3.5) * -position[1];
+  translate([woffset, hoffset, -depth]){
+    color($tertiary_color) linear_extrude(height=$dish_depth + depth){
+      text(text=text, font=font_face, size=font_size, halign="center", valign="center");
+    }
+  }
+}
+
+module legends(depth=0) {
+  if (len($front_legends) > 0) {
+    front_of_key() {
+      for (i=[0:len($front_legends)-1]) {
+        rotate([90,0,0]) keytext($front_legends[i][0], $front_legends[i][1], $front_legends[i][2], $front_legends[i][3], depth);
+  	  }
+    }
+  }
+  if (len($legends) > 0) {
+    top_of_key() {
+      for (i=[0:len($legends)-1]) {
+        keytext($legends[i][0], $legends[i][1], $legends[i][2], $legends[i][3], depth);
+      }
+    }
+  }
+}

src/functions.scad

@@ -1,9 +1,12 @@
 include <constants.scad>
+include <settings.scad>
 
 // I use functions when I need to compute special variables off of other special variables
 // functions need to be explicitly included, unlike special variables, which
 // just need to have been set before they are used. hence this file
 
+function stem_height() = $total_depth - ($dish_depth * ($inverted_dish ? -1 : 1))  - $stem_inset;
+
 // cherry stem dimensions
 function outer_cherry_stem(slop) = [7.2 - slop * 2, 5.5 - slop * 2];
 
@@ -16,11 +19,15 @@ function outer_box_cherry_stem(slop) = [6 - slop, 6 - slop];
 // .005 purely for aesthetics, to get rid of that ugly crosshatch
 function cherry_cross(slop, extra_vertical = 0) = [
   // horizontal tine
-  [4.03 + slop, 1.15 + slop / 3],
+  [4.03 + slop, 1.25 + slop / 3],
   // vertical tine
-  [1.25 + slop / 3, 4.23 + extra_vertical + slop / 3 + SMALLEST_POSSIBLE],
+  [1.15 + slop / 3, 4.23 + extra_vertical + slop / 3 + SMALLEST_POSSIBLE],
 ];
 
+// TODO add side_sculpting
+function key_width_at_progress(progress = 0) = $bottom_key_width + ($unit * ($key_length - 1)) - $width_difference;
+function key_height_at_progress(progress = 0) = $bottom_key_height + ($unit * ($key_height - 1)) - $height_difference + $side_sculpting(progress);
+
 // actual mm key width and height
 function total_key_width(delta = 0) = $bottom_key_width + $unit * ($key_length - 1) - delta;
 function total_key_height(delta = 0) = $bottom_key_height + $unit * ($key_height - 1) - delta;
@@ -28,3 +35,24 @@ function total_key_height(delta = 0) = $bottom_key_height + $unit * ($key_height
 // actual mm key width and height at the top
 function top_total_key_width() = $bottom_key_width + ($unit * ($key_length - 1)) - $width_difference;
 function top_total_key_height() = $bottom_key_height + ($unit * ($key_height - 1)) - $height_difference;
+
+function side_tilt(column) = asin($unit * column / $double_sculpt_radius);
+// tan of 0 is 0, division by 0 is nan, so we have to guard
+function extra_side_tilt_height(column) = side_tilt(column) ? ($double_sculpt_radius - ($unit * abs(column)) / tan(abs(side_tilt(column)))) : 0;
+
+// (I think) extra length of the side of the keycap due to the keytop being tilted.
+// necessary for calculating flat sided keycaps
+function vertical_inclination_due_to_top_tilt() = sin($top_tilt) * (top_total_key_height() - $corner_radius * 2) * 0.5;
+// how much you have to expand the front or back of the keytop to make the side
+// of the keycap a flat plane. 1 = front, -1 = back
+// I derived this through a bunch of trig reductions I don't really understand.
+function extra_keytop_length_for_flat_sides() = ($width_difference * vertical_inclination_due_to_top_tilt()) / ($total_depth);
+
+// adds uniform rounding radius for round-anything polyRound
+function add_rounding(p, radius)=[for(i=[0:len(p)-1])[p[i].x,p[i].y, radius]];
+// computes millimeter length from unit length
+function unit_length(length) = $unit * (length - 1) + 18.16;
+
+// if you have a radius of an inscribed circle, this function gives you the extra length for the radius of the circumscribed circle
+// and vice versa. used to find the edge of a rounded_square
+function distance_between_circumscribed_and_inscribed(radius) = (pow(2, 0.5) - 1) * radius;

src/hulls.scad

@@ -0,0 +1,19 @@
+include <hulls/skin.scad>
+include <hulls/linear_extrude.scad>
+include <hulls/hull.scad>
+
+// basic key shape, no dish, no inside
+// which is only used for dishing to cut the dish off correctly
+// $height_difference used for keytop thickness
+// extra_slices is a hack to make inverted dishes still work
+module shape_hull(thickness_difference, depth_difference, extra_slices = 0){
+  render() {
+    if ($hull_shape_type == "skin") {
+      skin_extrude_shape_hull(thickness_difference, depth_difference, extra_slices);
+    } else if ($hull_shape_type == "linear extrude") {
+      linear_extrude_shape_hull(thickness_difference, depth_difference, extra_slices);
+    } else {
+      hull_shape_hull(thickness_difference, depth_difference, extra_slices);
+    }
+  }
+}

src/hulls/hull.scad

@@ -0,0 +1,37 @@
+module hull_shape_hull(thickness_difference, depth_difference, extra_slices = 0) {
+  for (index = [0:$height_slices - 1 + extra_slices]) {
+    hull() {
+      placed_shape_slice(index / $height_slices, thickness_difference, depth_difference);
+      placed_shape_slice((index + 1) / $height_slices, thickness_difference, depth_difference);
+    }
+  }
+}
+
+module placed_shape_slice(progress, thickness_difference, depth_difference) {
+  skew_this_slice = $top_skew * progress;
+  x_skew_this_slice = $top_skew_x * progress;
+
+  depth_this_slice = ($total_depth - depth_difference) * progress;
+
+  tilt_this_slice = -$top_tilt / $key_height * progress;
+  y_tilt_this_slice = $double_sculpted ? (-$top_tilt_y / $key_length * progress) : 0;
+
+  translate([x_skew_this_slice, skew_this_slice, depth_this_slice]) {
+    rotate([tilt_this_slice,y_tilt_this_slice,0]){
+      shape_slice(progress, thickness_difference, depth_difference);
+    }
+  }
+}
+
+module shape_slice(progress, thickness_difference, depth_difference) {
+  linear_extrude(height = SMALLEST_POSSIBLE, scale = 1){
+    key_shape(
+      [
+        total_key_width(thickness_difference),
+        total_key_height(thickness_difference)
+      ],
+      [$width_difference, $height_difference],
+      progress
+    );
+  }
+}

src/hulls/linear_extrude.scad

@@ -0,0 +1,18 @@
+// corollary is hull_shape_hull
+// extra_slices unused, only to match argument signatures
+module linear_extrude_shape_hull(thickness_difference, depth_difference, extra_slices = 0){
+  height = $total_depth - depth_difference;
+  width_scale = top_total_key_width() / total_key_width();
+  height_scale = top_total_key_height() / total_key_height();
+
+  translate([0,$linear_extrude_height_adjustment,0]){
+    linear_extrude(height = height, scale = [width_scale, height_scale]) {
+        translate([0,-$linear_extrude_height_adjustment,0]){
+        key_shape(
+          [total_key_width(), total_key_height()],
+          [thickness_difference, thickness_difference]
+        );
+      }
+    }
+  }
+}

src/hulls/skin.scad

@@ -0,0 +1,34 @@
+// use skin() instead of successive hulls. much more correct, and looks faster
+// too, in most cases. successive hull relies on overlapping faces which are
+// not good. But, skin works on vertex sets instead of shapes, which makes it
+// a lot more difficult to use
+module skin_extrude_shape_hull(thickness_difference, depth_difference, extra_slices = 0 ) {
+  skin([
+    for (index = [0:$height_slices + extra_slices])
+      let(
+        progress = (index / $height_slices),
+        skew_this_slice = $top_skew * progress,
+        x_skew_this_slice = $top_skew_x * progress,
+        depth_this_slice = ($total_depth - depth_difference) * progress,
+        tilt_this_slice = -$top_tilt / $key_height * progress,
+        y_tilt_this_slice = $double_sculpted ? (-$top_tilt_y / $key_length * progress) : 0
+      )
+      skin_shape_slice(progress, thickness_difference, skew_this_slice, x_skew_this_slice, depth_this_slice, tilt_this_slice, y_tilt_this_slice)
+  ]);
+}
+
+function skin_shape_slice(progress, thickness_difference, skew_this_slice, x_skew_this_slice, depth_this_slice, tilt_this_slice, y_tilt_this_slice) =
+  transform(
+    translation([x_skew_this_slice,skew_this_slice,depth_this_slice]),
+    transform(
+      rotation([tilt_this_slice,y_tilt_this_slice,0]),
+        skin_key_shape([
+          total_key_width(0) - thickness_difference,
+          total_key_height(0) - thickness_difference,
+          ],
+          [$width_difference, $height_difference],
+          progress,
+          thickness_difference
+        )
+    )
+  );

src/key.scad

@@ -1,190 +1,89 @@
 // files
+include <constants.scad>
 include <functions.scad>
 include <shapes.scad>
 include <stems.scad>
 include <stem_supports.scad>
 include <dishes.scad>
 include <supports.scad>
-include <key_features.scad>
+include <features.scad>
+include <hulls.scad>
 
 include <libraries/geodesic_sphere.scad>
 
+// for skin hulls
+use <libraries/scad-utils/transformations.scad>
+use <libraries/scad-utils/lists.scad>
+use <libraries/scad-utils/shapes.scad>
+use <libraries/skin.scad>
 
-/* [Hidden] */
-SMALLEST_POSSIBLE = 1/128;
-$fs = .1;
-$unit = 19.05;
-blue = [.2667,.5882,1];
-color2 = [.5412, .4784, 1];
-purple = [.4078, .3569, .749];
-yellow = [1, .6941, .2];
-transparent_red = [1,0,0, 0.15];
-
-// key shape including dish. used as the ouside and inside shape in keytop(). allows for itself to be shrunk in depth and width / height
-module shape(thickness_difference, depth_difference){
+// key shape including dish. used as the outside and inside shape in hollow_key(). allows for itself to be shrunk in depth and width / height
+module shape(thickness_difference, depth_difference=0){
   dished(depth_difference, $inverted_dish) {
-    color(blue) shape_hull(thickness_difference, depth_difference, $inverted_dish ? 2 : 0);
+    color($primary_color) shape_hull(thickness_difference, depth_difference, $inverted_dish ? 200 : 0);
   }
 }
 
-// shape of the key but with soft, rounded edges. much more realistic, MUCH more complex. orders of magnitude more complex
 module rounded_shape() {
-  color(blue) minkowski(){
+  color($primary_color) minkowski(){
     // half minkowski in the z direction
     shape($minkowski_radius * 2, $minkowski_radius/2);
+    minkowski_object();
+  }
+}
+
+// minkowski places this object at every vertex of the other object then mashes
+// it all together
+module minkowski_object() {
+  // alternative minkowski shape that needs the bottom of the keycap to be trimmed
+  /* sphere(1); */
+
   difference(){
-      sphere(r=$minkowski_radius, $fn=20);
+    sphere(r=$minkowski_radius, $fa=360/$minkowski_facets);
     translate([0,0,-$minkowski_radius]){
       cube($minkowski_radius * 2, center=true);
     }
   }
 }
-}
 
+module envelope(depth_difference=0, extra_floor_depth=0) {
+  size = 1.5;
   
-// basic key shape, no dish, no inside
-// which is only used for dishing to cut the dish off correctly
-// $height_difference used for keytop thickness
-// extra_slices is a hack to make inverted dishes still work
-module shape_hull(thickness_difference, depth_difference, extra_slices = 0){
-  render() {
-    if ($linear_extrude_shape) {
-      linear_extrude_shape_hull(thickness_difference, depth_difference, extra_slices);
-    } else {
-      hull_shape_hull(thickness_difference, depth_difference, extra_slices);
-    }
-  }
-}
-
-// corollary is hull_shape_hull
-// extra_slices unused, only to match argument signatures
-module linear_extrude_shape_hull(thickness_difference, depth_difference, extra_slices = 0){
-  height = $total_depth - depth_difference;
-  width_scale = top_total_key_width() / total_key_width();
-  height_scale = top_total_key_height() / total_key_height();
-
-  translate([0,$linear_extrude_height_adjustment,0]){
-    linear_extrude(height = height, scale = [width_scale, height_scale]) {
-        translate([0,-$linear_extrude_height_adjustment,0]){
-        key_shape(total_key_width(thickness_difference), total_key_height(thickness_difference));
-      }
-    }
-  }
-}
-
-module hull_shape_hull(thickness_difference, depth_difference, extra_slices = 0) {
-  for (index = [0:$height_slices - 1 + extra_slices]) {
   hull(){
-      shape_slice(index / $height_slices, thickness_difference, depth_difference);
-      shape_slice((index + 1) / $height_slices, thickness_difference, depth_difference);
+    translate([0,0,extra_floor_depth]) cube([key_width_at_progress(extra_floor_depth / $total_depth) * size, key_height_at_progress(extra_floor_depth / $total_depth) * size, 0.01], center = true);
+    top_placement(SMALLEST_POSSIBLE + depth_difference){
+      cube([top_total_key_width() * size, top_total_key_height() * size, 0.01], center = true);
     }
   }
 }
 
-module shape_slice(progress, thickness_difference, depth_difference) {
-  skew_this_slice = $top_skew * progress;
-  depth_this_slice = ($total_depth - depth_difference) * progress;
-  tilt_this_slice = -$top_tilt / $key_height * progress;
-
-  translate([0, skew_this_slice, depth_this_slice]) {
-    rotate([tilt_this_slice,0,0]){
-      linear_extrude(height = SMALLEST_POSSIBLE){
-        key_shape(
-          [
-            total_key_width(thickness_difference),
-            total_key_height(thickness_difference)
-          ],
-          [$width_difference, $height_difference],
-          progress
-        );
-      }
-    }
-  }
-}
-
-// for when you want something to only exist inside the keycap.
-// used for the support structure
-module inside() {
+// for when you want to take the dish out of things
+// used for adding the dish to the key shape and making sure stems don't stick out the top
+// creates a bounding box 1.5 times larger in width and height than the keycap.
+module dished(depth_difference = 0, inverted = false) {
   intersection() {
-    shape($wall_thickness, $keytop_thickness);
     children();
+    difference(){
+      union() {
+        // envelope is needed to "fill in" the rest of the keycap. intersections with small objects are much faster than differences with large objects
+        envelope(depth_difference, $stem_inset);
+        if (inverted) top_placement(depth_difference) color($secondary_color) _dish(inverted);
       }
-}
-
-// put something at the top of the key, with no adjustments for dishing
-module top_placement(depth_difference) {
-  translate([$dish_skew_x, $top_skew + $dish_skew_y, $total_depth - depth_difference]){
-    rotate([-$top_tilt / $key_height,0,0]){
-      children();
+      if (!inverted) top_placement(depth_difference) color($secondary_color) _dish(inverted);
+      // %top_placement(depth_difference) _dish();
     }
   }
 }
 
 // just to DRY up the code
-module _dish() {
-  dish(top_total_key_width() + $dish_overdraw_width, top_total_key_height() + $dish_overdraw_height, $dish_depth, $inverted_dish);
-}
-
-module envelope(depth_difference) {
-  s = 1.5;
-  hull(){
-    cube([total_key_width() * s, total_key_height() * s, 0.01], center = true);
-    top_placement(SMALLEST_POSSIBLE + depth_difference){
-      cube([top_total_key_width() * s, top_total_key_height() * s, 0.01], center = true);
-    }
-  }
-}
-
-module dished_for_show() {
-  difference(){
-    union() {
-      envelope();
-      if ($inverted_dish) top_placement(0) _dish();
-    }
-    if (!$inverted_dish) top_placement(0) _dish();
-  }
-}
-
-
-// for when you want to take the dish out of things
-// used for adding the dish to the key shape and making sure stems don't stick out the top
-// creates a bounding box 1.5 times larger in width and height than the keycap.
-module dished(depth_difference, inverted = false) {
-  intersection() {
-    children();
-    difference(){
-      union() {
-        envelope(depth_difference);
-        if (inverted) top_placement(depth_difference) _dish();
-      }
-      if (!inverted) top_placement(depth_difference) _dish();
-    }
-  }
-}
-
-// puts it's children at the center of the dishing on the key, including dish height
-// more user-friendly than top_placement
-module top_of_key(){
-  // if there is a dish, we need to account for how much it digs into the top
-  dish_depth = ($dish_type == "disable") ? 0 : $dish_depth;
-  // if the dish is inverted, we need to account for that too. in this case we do half, otherwise the children would be floating on top of the dish
-  corrected_dish_depth = ($inverted_dish) ? -dish_depth / 2 : dish_depth;
-
-  top_placement(corrected_dish_depth) {
-    children();
-  }
-}
-
-module keytext(text, position, font_size, depth) {
-  woffset = (top_total_key_width()/3.5) * position[0];
-  hoffset = (top_total_key_height()/3.5) * -position[1];
-  translate([woffset, hoffset, -depth]){
-    linear_extrude(height=$dish_depth){
-      text(text=text, font=$font, size=font_size, halign="center", valign="center");
-    }
-  }
+// TODO is putting special vars in function signatures legal
+module _dish(inverted=$inverted_dish) {
+  translate([$dish_offset_x,0,0]) color($secondary_color) 
+  dish(top_total_key_width() + $dish_overdraw_width, top_total_key_height() + $dish_overdraw_height, $dish_depth, inverted);
+  // %dish(top_total_key_width() + $dish_overdraw_width, top_total_key_height() + $dish_overdraw_height, $dish_depth, inverted);
 }
 
+// puts its children at each keystem position provided
 module keystem_positions(positions) {
   for (connector_pos = positions) {
     translate(connector_pos) {
@@ -197,120 +96,166 @@ module keystem_positions(positions) {
 
 module support_for(positions, stem_type) {
   keystem_positions(positions) {
-    color(yellow) supports($support_type, stem_type, $stem_throw, $total_depth - $stem_throw);
+    color($tertiary_color) supports($support_type, stem_type, $stem_throw, $total_depth - $stem_throw);
   }
 }
 
 module stems_for(positions, stem_type) {
   keystem_positions(positions) {
-    color(yellow) stem(stem_type, $total_depth, $stem_slop);
+    color($tertiary_color) stem(stem_type, stem_height(), $stem_slop, $stem_throw);
     if ($stem_support_type != "disable") {
-      color(color2) stem_support($stem_support_type, stem_type, $stem_support_height, $stem_slop);
+      color($quaternary_color) stem_support($stem_support_type, stem_type, $stem_support_height, $stem_slop);
     }
   }
 }
 
-// a fake cherry keyswitch, abstracted out to maybe replace with a better one later
-module cherry_keyswitch() {
-  union() {
-    hull() {
-      cube([15.6, 15.6, 0.01], center=true);
-      translate([0,1,5 - 0.01]) cube([10.5,9.5, 0.01], center=true);
-    }
-    hull() {
-      cube([15.6, 15.6, 0.01], center=true);
-      translate([0,0,-5.5]) cube([13.5,13.5,0.01], center=true);
+// put something at the top of the key, with no adjustments for dishing
+module top_placement(depth_difference=0) {
+  top_tilt_by_height = -$top_tilt / $key_height;
+  top_tilt_y_by_length = $double_sculpted ? (-$top_tilt_y / $key_length) : 0;
+
+  // minkowski_height = $rounded_key ? $minkowski_radius : 0;
+
+  translate([$top_skew_x + $dish_skew_x, $top_skew + $dish_skew_y, $total_depth - depth_difference]){
+    rotate([top_tilt_by_height, top_tilt_y_by_length,0]){
+      children();
     }
   }
 }
 
-//approximate (fully depressed) cherry key to check clearances
-module clearance_check() {
-  if($stem_type == "cherry" || $stem_type == "cherry_rounded"){
-    color(transparent_red){
-      translate([0,0,3.6 + $stem_inset - 5]) {
-        cherry_keyswitch();
-      }
-    }
-  }
-}
+// puts its children at the center of the dishing on the key, including dish height
+// more user-friendly than top_placement
+module top_of_key(){
+  // if there is a dish, we need to account for how much it digs into the top
+  dish_depth = ($dish_type == "disable") ? 0 : $dish_depth;
+  // if the dish is inverted, we need to account for that too. in this case we do half, otherwise the children would be floating on top of the dish
+  corrected_dish_depth = ($inverted_dish) ? -dish_depth / 2 : dish_depth;
 
-// legends / artisan support
-module artisan(depth) {
-  top_of_key() {
-    // outset legend
-    if (len($legends) > 0) {
-      for (i=[0:len($legends)-1]) {
-        keytext($legends[i][0], $legends[i][1], $legends[i][2], depth);
-      }
-    }
-    // artisan objects / outset shape legends
+  top_placement(corrected_dish_depth) {
     children();
   }
 }
 
-// key with hollowed inside but no stem
-module keytop() {
-  difference(){
-    if ($rounded_key) {
+module front_of_key() {
+  // all this math is to take top skew and tilt into account
+  // we need to find the new effective height and depth of the top, front lip
+  // of the keycap to find the angle so we can rotate things correctly into place
+  total_depth_difference = sin(-$top_tilt) * (top_total_key_height()/2);
+  total_height_difference = $top_skew + (1 - cos(-$top_tilt)) * (top_total_key_height()/2);
+
+  angle = atan2(($total_depth - total_depth_difference), ($height_difference/2 + total_height_difference));
+  hypotenuse = ($total_depth -total_depth_difference) / sin(angle);
+
+  translate([0,-total_key_height()/2,0]) {
+    rotate([-(90-angle), 0, 0]) {
+      translate([0,0,hypotenuse/2]){
+        children();
+      }
+    }
+  }
+}
+
+module outer_shape() {
+  if ($rounded_key == true) {
     rounded_shape();
   } else {
     shape(0, 0);
   }
-    // translation purely for aesthetic purposes, to get rid of that awful lattice
-    translate([0,0,-SMALLEST_POSSIBLE]) {
-      shape($wall_thickness, $keytop_thickness);
 }
+
+module inner_shape(extra_wall_thickness = 0, extra_keytop_thickness = 0) {
+  if ($inner_shape_type == "flat") {
+    /* $key_shape_type="square"; */
+    $height_slices = 1;
+    // if inner_shape is flat, keytop_thickness will be dish_depth less than it should be, since the dish digs in that far.
+    // so, we add dish_depth here
+    color($primary_color) shape_hull($wall_thickness + extra_wall_thickness, $keytop_thickness + extra_keytop_thickness + $dish_depth, 0);
+  } else {
+    shape($wall_thickness + extra_wall_thickness, $keytop_thickness + extra_keytop_thickness);
   }
 }
 
-
-// The final, penultimate key generation function.
-// takes all the bits and glues them together. requires configuration with special variables.
-module key(inset = false) {
-  difference() {
-    union(){
-      // the shape of the key, inside and out
-      keytop();
-      if($key_bump) top_of_key() keybump($key_bump_depth, $key_bump_edge);
 // additive objects at the top of the key
-      if(!inset) artisan() children();
+module additive_features(inset) {
+  top_of_key() {
+    if($key_bump) keybump($key_bump_depth, $key_bump_edge);
+    if(!inset && $children > 0) color($secondary_color) children();
+  }
+  if($outset_legends) legends(0);
   // render the clearance check if it's enabled, but don't have it intersect with anything
   if ($clearance_check) %clearance_check();
 }
 
 // subtractive objects at the top of the key
-    if (inset) artisan(0.3) children();
+module subtractive_features(inset) {
+  top_of_key() {
+    if (inset && $children > 0) color($secondary_color) children();
+  }
+  if(!$outset_legends) legends($inset_legend_depth);
   // subtract the clearance check if it's enabled, letting the user see the
   // parts of the keycap that will hit the cherry switch
-    if ($clearance_check) clearance_check();
+  // this is a little confusing as it eats the stem too
+  /* if ($clearance_check) clearance_check(); */
 }
 
-  // both stem and support are optional
-  if ($stem_type != "disable" || ($stabilizers != [] && $stabilizer_type != "disable")) {
-    dished($keytop_thickness, $inverted_dish) {
+// features inside the key itself (stem, supports, etc)
+module inside_features() {
+  // Stems and stabilizers are not "inside features" unless they are fully
+  // contained inside the cap. otherwise they'd be cut off when they are
+  // differenced with the outside shape. this only matters if $stem_inset
+  // is negative
+  if ($stem_inset >= 0) stems_and_stabilizers();
+  if ($support_type != "disable") translate([0, 0, $stem_inset]) support_for($stem_positions, $stem_type);
+  if ($stabilizer_type != "disable") translate([0, 0, $stem_inset]) support_for($stabilizers, $stabilizer_type);
+}
+
+// all stems and stabilizers
+module stems_and_stabilizers() {
   translate([0, 0, $stem_inset]) {
-        /* if ($stabilizer_type != "disable") stems_for($stabilizers, $stabilizer_type); */
-        if ($stem_type != "disable") {
-          stems_for($stabilizers, $stabilizer_type);
-        }
-
-        stems_for($stem_positions, $stem_type);
-      }
+    if ($stabilizer_type != "disable") stems_for($stabilizers, $stabilizer_type);
+    if ($stem_type != "disable") stems_for($stem_positions, $stem_type);
   }
 }
 
-  if ($support_type != "disable"){
-    inside() {
-      translate([0, 0, $stem_inset]) {
-        if ($stabilizer_type != "disable") support_for($stabilizers, $stabilizer_type);
-
-        // always render stem support even if there isn't a stem.
-        // rendering flat support w/no stem is much more common than a hollow keycap
-        // so if you want a hollow keycap you'll have to turn support off entirely
-        support_for($stem_positions, $stem_type);
+// helpers for doubleshot keycaps for now
+module inner_total_shape() {
+  difference() {
+    inner_shape();
+    inside_features();
   }
 }
+
+module outer_total_shape(inset=false) {
+  outer_shape();
+  additive_features(inset) {
+    children();
+  };
+}
+
+// The final, penultimate key generation function.
+// takes all the bits and glues them together. requires configuration with special variables.
+module key(inset=false) {
+  difference(){
+    outer_total_shape(inset) {
+      children();
+    };
+
+    if ($inner_shape_type != "disable") {
+      translate([0,0,-SMALLEST_POSSIBLE]) { // avoids moire
+        inner_total_shape();
+      }
+    }
+
+    subtractive_features(inset) {
+      children();
+    };
+  }
+
+  // semi-hack to make sure negative inset stems don't poke through the top of the keycap
+  if ($stem_inset < 0) {
+    dished(0, $inverted_dish) {
+      stems_and_stabilizers();
+    }
   } 
 }
 
@@ -321,4 +266,6 @@ module example_key(){
   key();
 }
 
+if (!$using_customizer) {
   example_key();
+}

src/key_layouts.scad

@@ -0,0 +1,20 @@
+include <layouts/layout.scad>
+
+include <layouts/preonic/default.scad>
+include <layouts/preonic/mit.scad>
+
+include <layouts/planck/default.scad>
+include <layouts/planck/mit.scad>
+
+include <layouts/lets_split/default.scad>
+
+include <layouts/project_zen/default.scad>
+
+include <layouts/60_percent/default.scad>
+include <layouts/gherkin/default.scad>
+include <layouts/gherkin/gherkin_bump.scad>
+
+include <layouts/dactyl_manuform/4x6.scad>
+include <layouts/dactyl_manuform/4x6_legends.scad>
+
+include <layouts/plate.scad>

src/key_profiles.scad

@@ -7,19 +7,48 @@ include <key_profiles/oem.scad>
 include <key_profiles/dsa.scad>
 include <key_profiles/sa.scad>
 include <key_profiles/g20.scad>
+include <key_profiles/hipro.scad>
+include <key_profiles/mt3.scad>
+include <key_profiles/grid.scad>
+include <key_profiles/regular_polygon.scad>
+include <key_profiles/cherry.scad>
+include <key_profiles/dss.scad>
+include <key_profiles/asa.scad>
+include <key_profiles/typewriter.scad>
+include <key_profiles/hex.scad>
 
 // man, wouldn't it be so cool if functions were first order
-module key_profile(key_profile_type, row) {
+module key_profile(key_profile_type, row, column=0) {
   if (key_profile_type == "dcs") {
-    dcs_row(row) children();
+    dcs_row(row, column) children();
   } else if (key_profile_type == "oem") {
-    oem_row(row) children();
+    oem_row(row, column) children();
   } else if (key_profile_type == "dsa") {
-    dsa_row(row) children();
+    dsa_row(row, column) children();
+  } else if (key_profile_type == "dss") {
+    dss_row(row, column) children();
   } else if (key_profile_type == "sa") {
-    sa_row(row) children();
+    sa_row(row, column) children();
+  } else if (key_profile_type == "asa") {
+    asa_row(row, column) children();
   } else if (key_profile_type == "g20") {
-    g20_row(row) children();
+    g20_row(row, column) children();
+  } else if (key_profile_type == "hipro") {
+    hipro_row(row, column) children();
+  } else if (key_profile_type == "grid") {
+    grid_row(row, column) children();
+  } else if (key_profile_type == "typewriter") {
+    typewriter_row(row, column) children();
+  } else if (key_profile_type == "hex") { // reddit.com/r/MechanicalKeyboards/comments/kza7ji
+    hex_row(row, column) children();
+  } else if (key_profile_type == "hexagon") {
+    hexagonal_row(row, column) children();
+  } else if (key_profile_type == "octagon") {
+    octagonal_row(row, column) children();
+  } else if (key_profile_type == "cherry") {
+    cherry_row(row, column) children();
+  } else if (key_profile_type == "mt3") {
+    mt3_row(row, column) children();  
   } else if (key_profile_type == "disable") {
     children();
   } else {

src/key_profiles/asa.scad

@@ -0,0 +1,44 @@
+use <../functions.scad>
+include <../settings.scad>
+
+module asa_row(row=3, column = 0) {
+$key_shape_type = "sculpted_square";
+  $bottom_key_height = 18.15;
+  $bottom_key_width = 18.10;      // Default (R3)
+  $total_depth = 10.75;           // Default (R3)
+  $top_tilt = 1.5;                // Default (R3)
+  $width_difference = 6.20;
+  $height_difference = 6.55;
+  $dish_type = "spherical";
+  $dish_depth = 1.3;
+  $dish_skew_x = 0;
+  $dish_skew_y = 0;
+  $top_skew = 1.75;
+  $stem_inset = 1.2;
+  $height_slices = 10;
+
+  $corner_radius = 1;
+  $more_side_sculpting_factor = 0.4;
+
+  $side_sculpting = function(progress) (1 - progress) * 4.5;
+  $corner_sculpting = function(progress) pow(progress, 2);
+
+  // this is _incredibly_ intensive
+  //$rounded_key = true;
+
+  if (row == 1){
+    $total_depth = 10.5;
+    $top_tilt = 9.33;
+    children();
+  } else if (row == 2) {
+    $total_depth = 9.95;
+    $top_tilt = 4;
+    children();
+  } else if (row == 4){
+    $total_depth = 12.55;
+    $top_tilt = 0.43;
+    children();
+  }else{
+    children();
+  }  		
+}

src/key_profiles/cherry.scad

@@ -0,0 +1,51 @@
+use <../functions.scad>
+include <../settings.scad>
+
+// based off GMK keycap set
+
+module cherry_row(row=3, column=0) {
+  $bottom_key_width = 18.16;
+  $bottom_key_height = 18.16;
+  $width_difference = $bottom_key_width - 11.85;
+  $height_difference = $bottom_key_height - 14.64;
+  $dish_type = "cylindrical";
+  $dish_depth = 0.65;
+  $dish_skew_x = 0;
+  $dish_skew_y = 0;
+  $top_skew = 2;
+
+  $top_tilt_y = side_tilt(column);
+  extra_height = $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  // NOTE: cherry keycaps have this stem inset, but I'm reticent to turn it on
+  // since it'll be surprising to folks. the height has been adjusted accordingly
+  // $stem_inset = 0.6;
+  extra_stem_inset_height = max(0.6 - $stem_inset, 0);
+
+  // <= is a hack so you can do these in a for loop. function row = 0
+  if (row <= 1) {
+    $total_depth = 9.8 - extra_stem_inset_height + extra_height;
+    $top_tilt = 0;
+
+    children();
+  } else if (row == 2) {
+    $total_depth = 7.45 - extra_stem_inset_height + extra_height;
+    $top_tilt = 2.5;
+
+    children();
+  } else if (row == 3) {
+    $total_depth = 6.55 - extra_stem_inset_height + extra_height;
+    $top_tilt = 5;
+    children();
+  } else if (row == 3) {
+    $total_depth = 6.7 + 0.65 - extra_stem_inset_height + extra_height;
+    $top_tilt = 11.5;
+    children();
+  } else if (row >= 4) {
+    $total_depth = 6.7 + 0.65 - extra_stem_inset_height + extra_height;
+    $top_tilt = 11.5;
+    children();
+  } else {
+    children();
+  }
+}

src/key_profiles/dcs.scad

@@ -1,33 +1,47 @@
-module dcs_row(n=3) {
-  // names, so I don't go crazy
+use <../functions.scad>
+include <../settings.scad>
+
+module dcs_row(row=3, column=0) {
   $bottom_key_width = 18.16;
   $bottom_key_height = 18.16;
   $width_difference = 6;
   $height_difference = 4;
   $dish_type = "cylindrical";
-  $dish_depth = 1;
+  $dish_depth = 0.5;
   $dish_skew_x = 0;
   $dish_skew_y = 0;
   $top_skew = 1.75;
 
-  if (n == 5) {
-    $total_depth = 11.5;
+  $top_tilt_y = side_tilt(column);
+  extra_height = $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  // this dish depth should match the depth of the uberdishing in fully sculpted mode
+  // but it doesn't, and it's very slight for any reasonable double sculpting
+  /* $dish_depth = $double_sculpt_radius - sin(acos(top_total_key_width()/2 /$double_sculpt_radius)) * $double_sculpt_radius; */
+
+  /* echo("DISH DEPTH", $dish_depth, "column", column); */
+
+  // 5/0 is a hack so you can do these in a for loop
+  if (row == 5 || row == 0) {
+    $total_depth = 11.5 + extra_height;
     $top_tilt = -6;
+
     children();
-  } else if (n == 1) {
-    $total_depth = 8.5;
+  } else if (row == 1) {
+    $total_depth = 8.5 + extra_height;
     $top_tilt = -1;
+
     children();
-  } else if (n == 2) {
-    $total_depth = 7.5;
+  } else if (row == 2) {
+    $total_depth = 7.5 + extra_height;
     $top_tilt = 3;
     children();
-  } else if (n == 3) {
-    $total_depth = 6;
+  } else if (row == 3) {
+    $total_depth = 6 + extra_height;
     $top_tilt = 7;
     children();
-  } else if (n == 4) {
-    $total_depth = 6;
+  } else if (row == 4) {
+    $total_depth = 6 + extra_height;
     $top_tilt = 16;
     children();
   } else {

src/key_profiles/dsa.scad

@@ -1,36 +1,44 @@
-module dsa_row(n=3) {
+use <../functions.scad>
+include <../settings.scad>
+
+module dsa_row(row=3, column = 0) {
   $key_shape_type = "sculpted_square";
   $bottom_key_width = 18.24; // 18.4;
   $bottom_key_height = 18.24; // 18.4;
   $width_difference = 6; // 5.7;
   $height_difference = 6; // 5.7;
-  $top_tilt = n == 5 ? -21 : (n-3) * 7;
+  $top_tilt = row == 5 ? -21 : (row-3) * 7;
   $top_skew = 0;
   $dish_type = "spherical";
   $dish_depth = 1.2;
   $dish_skew_x = 0;
   $dish_skew_y = 0;
   $height_slices = 10;
-  $enable_side_sculpting = true;
-  // might wanna change this if you don't minkowski
-  // do you even minkowski bro
-  $corner_radius = 0.25;
+
+  $side_sculpting = function(progress) (1 - progress) * 4.5;
+  $corner_sculpting = function(progress) pow(progress, 2);
+  
+  $corner_radius = 1;
+  $more_side_sculpting_factor = 0.4;
+
+  $top_tilt_y = side_tilt(column);
+  extra_height = $double_sculpted ? extra_side_tilt_height(column) : 0;
 
   depth_raisers = [0, 3.5, 1, 0, 1, 3];
-  if (n == 5) {
-    $total_depth = 8.1 + depth_raisers[n];
+  if (row < 1 || row > 4) {
+    $total_depth = 8.1 + depth_raisers[row] + extra_height;
     children();
-  } else if (n == 1) {
-    $total_depth = 8.1 + depth_raisers[n];
+  } else if (row == 1) {
+    $total_depth = 8.1 + depth_raisers[row] + extra_height;
     children();
-  } else if (n == 2) {
-    $total_depth = 8.1 + depth_raisers[n];
+  } else if (row == 2) {
+    $total_depth = 8.1 + depth_raisers[row] + extra_height;
     children();
-  } else if (n == 3) {
-    $total_depth = 8.1 + depth_raisers[n];
+  } else if (row == 3) {
+    $total_depth = 8.1 + depth_raisers[row] + extra_height;
     children();
-  } else if (n == 4) {
-    $total_depth = 8.1 + depth_raisers[n];
+  } else if (row == 4) {
+    $total_depth = 8.1 + depth_raisers[row] + extra_height;
     children();
   } else {
     children();

src/key_profiles/dss.scad

@@ -0,0 +1,55 @@
+use <../functions.scad>
+include <../settings.scad>
+
+module dss_row(n=3, column=0) {
+  $key_shape_type = "sculpted_square";
+  $bottom_key_width = 18.24;
+  $bottom_key_height = 18.24;
+  $width_difference = 6;
+  $height_difference = 6;
+  $dish_type = "spherical";
+  $dish_depth = 1.2;
+  $dish_skew_x = 0;
+  $dish_skew_y = 0;
+  $top_skew = 0;
+  $height_slices = 10;
+  // might wanna change this if you don't minkowski
+  // do you even minkowski bro
+  $corner_radius = 1;
+  $more_side_sculpting_factor = 0.4;
+
+  $side_sculpting = function(progress) (1 - progress) * 4.5;
+  $corner_sculpting = function(progress) pow(progress, 2);
+
+  // this is _incredibly_ intensive
+  /* $rounded_key = true; */
+
+  $top_tilt_y = side_tilt(column);
+  extra_height = $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  // 5th row is usually unsculpted or the same as the row below it
+  // making a super-sculpted top row (or bottom row!) would be real easy
+  // bottom row would just be 13 tilt and 14.89 total depth
+  // top row would be something new entirely - 18 tilt maybe?
+  if (n <= 1){
+    $total_depth = 10.5 + extra_height;
+    $top_tilt = -1;
+    children();
+  } else if (n == 2) {
+    $total_depth = 8.6 + extra_height;
+    $top_tilt = 3;
+    children();
+  } else if (n == 3) {
+    $total_depth = 7.9 + extra_height;
+    $top_tilt = 8;
+    children();
+  } else if (n == 4){
+    $total_depth = 9.1 + extra_height;
+    $top_tilt = 16;
+    children();
+  } else {
+    $total_depth = 7.9 + extra_height;
+    $top_tilt = 8;
+    children();
+  }
+}

src/key_profiles/g20.scad

@@ -1,4 +1,7 @@
-module g20_row(n=3) {
+use <../functions.scad>
+include <../settings.scad>
+
+module g20_row(row=3, column = 0) {
   $bottom_key_width = 18.16;
   $bottom_key_height = 18.16;
   $width_difference = 2;
@@ -16,25 +19,26 @@ module g20_row(n=3) {
   //also,
   $rounded_key = true;
 
-  if (n == 5) {
-    $total_depth = 6 + abs((n-3) * 0.5);
+  $top_tilt_y = side_tilt(column);
+  extra_height =  $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  $total_depth = 6 + abs((row-3) * 0.5) + extra_height;
+
+  if (row == 5 || row == 0) {
+
     $top_tilt =  -18.55;
     children();
-  } else if (n == 1) {
-    $total_depth = 6 + abs((n-3) * 0.5);
-    $top_tilt = (n-3) * 7 + 2.5;
+  } else if (row == 1) {
+    $top_tilt = (row-3) * 7 + 2.5;
     children();
-  } else if (n == 2) {
-    $total_depth = 6 + abs((n-3) * 0.5);
-    $top_tilt = (n-3) * 7 + 2.5;
+  } else if (row == 2) {
+    $top_tilt = (row-3) * 7 + 2.5;
     children();
-  } else if (n == 3) {
-    $total_depth = 6 + abs((n-3) * 0.5);
-    $top_tilt = (n-3) * 7 + 2.5;
+  } else if (row == 3) {
+    $top_tilt = (row-3) * 7 + 2.5;
     children();
-  } else if (n == 4) {
-    $total_depth = 6 + abs((n-3) * 0.5);
-    $top_tilt = (n-3) * 7 + 2.5;
+  } else if (row == 4) {
+    $top_tilt = (row-3) * 7 + 2.5;
     children();
   } else {
     children();

src/key_profiles/grid.scad

@@ -0,0 +1,50 @@
+use <../functions.scad>
+include <../settings.scad>
+
+module grid_row(row=3, column = 0) {
+  $bottom_key_width = 18.16;
+  $bottom_key_height = 18.16;
+  $width_difference = 1;
+  $height_difference = 1;
+  $top_tilt = 0;
+  $top_skew = 0;
+  $dish_type = "old spherical";
+  // something weird is going on with this and legends - can't put it below 1.2 or they won't show
+  $dish_depth = 1;
+  $dish_skew_x = 0;
+  $dish_skew_y = 0;
+
+  $hull_shape_type = "linear extrude";
+
+
+  $dish_overdraw_width = -6.5;
+  $dish_overdraw_height = -6.5;
+
+  $minkowski_radius = 0.5;
+  //also,
+  /* $rounded_key = true; */
+
+  $top_tilt_y = side_tilt(column);
+  extra_height =  $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  $total_depth = 7 + abs((row-3) * 0.5) + extra_height;
+
+  if (row == 5 || row == 0) {
+    /* $top_tilt =  -18.55; */
+    children();
+  } else if (row == 1) {
+    /* $top_tilt = (row-3) * 7 + 2.5; */
+    children();
+  } else if (row == 2) {
+    /* $top_tilt = (row-3) * 7 + 2.5; */
+    children();
+  } else if (row == 3) {
+    /* $top_tilt = (row-3) * 7 + 2.5; */
+    children();
+  } else if (row == 4) {
+    /* $top_tilt = (row-3) * 7 + 2.5; */
+    children();
+  } else {
+    children();
+  }
+}

src/key_profiles/hex.scad

@@ -0,0 +1,62 @@
+include <../constants.scad>
+// Regular polygon shapes CIRCUMSCRIBE the sphere of diameter $bottom_key_width
+// This is to make tiling them easier, like in the case of hexagonal keycaps etc
+
+// this function doesn't set the key shape, so you can't use it directly without some fiddling
+module hex_row(n=3, column=0) {
+  $bottom_key_width = $unit - 0.5;
+  $bottom_key_height = $unit - 0.5;
+  
+  $width_difference = 0;
+  $height_difference = 0;
+  
+  $dish_type = "spherical";
+  $key_shape_type = "hexagon";
+
+  $stem_inset = -2.5;
+  $stem_throw = 3;
+
+  // $dish_depth = 1;
+
+  $top_skew = 0;
+  $height_slices = 1;
+  $stem_support_type = "disable";
+  
+  $dish_overdraw_width = -8.25;
+  $dish_overdraw_height = -8.25;
+//   $corner_radius = 1;
+
+  // this is _incredibly_ intensive
+  /* $rounded_key = true; */
+
+  $top_tilt_y = side_tilt(column);
+  extra_height = $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  base_depth = 4;
+  if (n <= 1){
+    $total_depth = base_depth + 2.5 + extra_height;
+    $top_tilt = -13;
+
+    children();
+  } else if (n == 2) {
+    $total_depth = base_depth + 0.5 + extra_height;
+    $top_tilt = -7;
+
+    children();
+  } else if (n == 3) {
+    $total_depth = base_depth + extra_height;
+    $top_tilt = 0;
+
+    children();
+  } else if (n == 4){
+    $total_depth = base_depth + 0.5 + extra_height;
+    $top_tilt = 7;
+
+    children();
+  } else {
+    $total_depth = base_depth + extra_height;
+    $top_tilt = 0;
+
+    children();
+  }
+}

src/key_profiles/hipro.scad

@@ -0,0 +1,48 @@
+use <../functions.scad>
+include <../settings.scad>
+
+module hipro_row(row=3, column=0) {
+  $key_shape_type = "sculpted_square";
+
+  $bottom_key_width = 18.35;
+  $bottom_key_height = 18.17;
+
+  $width_difference = ($bottom_key_width - 12.3);
+  $height_difference = ($bottom_key_height - 12.65);
+  $dish_type = "squared scoop";
+  $dish_depth = 0.75;
+  $dish_skew_x = 0;
+  $dish_skew_y = 0;
+  $top_skew = 0;
+  $height_slices = 10;
+
+  $corner_radius = 1;
+  $more_side_sculpting_factor = 0.4;
+
+  $side_sculpting = function(progress) (1 - progress) * 4.5;
+  $corner_sculpting = function(progress) pow(progress, 2);
+
+  $top_tilt_y = side_tilt(column);
+  extra_height =  $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  if (row <= 1){
+    $total_depth = 13.7 + extra_height;
+    // TODO I didn't change these yet
+    $top_tilt = -13;
+    children();
+  } else if (row == 2) {
+    $total_depth = 11.1 + extra_height;
+    $top_tilt = -7;
+    children();
+  } else if (row == 3) {
+    $total_depth = 11.1 + extra_height;
+    $top_tilt = 7;
+    children();
+  } else if (row == 4 || row == 5){
+    $total_depth = 12.25 + extra_height;
+    $top_tilt = 13;
+    children();
+  } else {
+    children();
+  }
+}

src/key_profiles/mt3.scad

@@ -0,0 +1,58 @@
+use <../functions.scad>
+include <../settings.scad>
+
+// This is an imperfect attempt to clone the MT3 profile
+module mt3_row(row=3, column=0, deep_dish=false) {
+  $key_shape_type = "sculpted_square";
+
+  $bottom_key_width = 18.35;
+  $bottom_key_height = 18.6;
+
+  $width_difference = ($bottom_key_width - 13.0);
+  $height_difference = ($bottom_key_height - 13.0);
+  $dish_type = "squared spherical";
+  $dish_depth = deep_dish ? 1.6 : 1.2;
+  $dish_skew_x = 0;
+  $dish_skew_y = 0;
+  $top_skew = 0;
+  $height_slices = 10;
+
+  $corner_radius = 0.0125;
+  $more_side_sculpting_factor = 0.75;
+
+  $side_sculpting = function(progress) (1 - progress) * 4.5;
+  $corner_sculpting = function(progress) pow(progress, 2) * 2;
+
+
+  $top_tilt_y = side_tilt(column);
+  extra_height =  $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  if (row == 0){
+    // TODO I didn't change these yet
+    $total_depth = 14.7 + extra_height;
+    $top_tilt = -12.5;
+    children();
+  } else if (row == 1) {
+    $total_depth = 13.1 + extra_height;
+    $top_tilt = -6;
+    children();
+  }  else if (row == 2) {
+    $total_depth = 10.7 + extra_height;
+    $top_tilt = -6;
+    children();
+  } else if (row == 3) {
+    $total_depth = 10.7 + extra_height;
+    $top_tilt = 6;
+    children();
+  } else if (row == 4){
+    $total_depth = 11.6 + extra_height;
+    $top_tilt = 12;
+    children();
+  } else if (row >= 5) {
+    $total_depth = 11.6 + extra_height;
+    $top_tilt = 0;
+    children();
+  } else {
+    children();
+  }
+}

src/key_profiles/oem.scad

@@ -1,4 +1,7 @@
-module oem_row(n=3) {
+use <../functions.scad>
+include <../settings.scad>
+
+module oem_row(row=3, column = 0) {
   $bottom_key_width = 18.05;
   $bottom_key_height = 18.05;
   $width_difference = 5.8;
@@ -10,24 +13,27 @@ module oem_row(n=3) {
   $top_skew = 1.75;
   $stem_inset = 1.2;
 
-  if (n == 5) {
-    $total_depth = 11.2;
+  $top_tilt_y = side_tilt(column);
+  extra_height =  $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  if (row == 5 || row == 0) {
+    $total_depth = 11.2 + extra_height;
     $top_tilt = -3;
     children();
-  } else if (n == 1) {
-    $total_depth = 9.45;
+  } else if (row == 1) {
+    $total_depth = 9.45 + extra_height;
     $top_tilt = 1;
     children();
-  } else if (n == 2) {
-    $total_depth = 9;
+  } else if (row == 2) {
+    $total_depth = 9 + extra_height;
     $top_tilt = 6;
     children();
-  } else if (n == 3) {
-    $total_depth = 9.25;
+  } else if (row == 3) {
+    $total_depth = 9.25 + extra_height;
     $top_tilt = 9;
     children();
-  } else if (n == 4) {
-    $total_depth = 9.25;
+  } else if (row == 4) {
+    $total_depth = 9.25 + extra_height;
     $top_tilt = 10;
     children();
   } else {

src/key_profiles/regular_polygon.scad

@@ -0,0 +1,68 @@
+use <../functions.scad>
+include <../settings.scad>
+include <../constants.scad>
+// Regular polygon shapes CIRCUMSCRIBE the sphere of diameter $bottom_key_width
+// This is to make tiling them easier, like in the case of hexagonal keycaps etc
+
+// this function doesn't set the key shape, so you can't use it directly without some fiddling
+module regular_polygon_row(n=3, column=0) {
+  $bottom_key_width = $unit - 0.5;
+  $bottom_key_height = $unit - 0.5;
+  $width_difference = 0;
+  $height_difference = 0;
+  $dish_type = "spherical";
+  $dish_depth = 0.85;
+  $dish_skew_x = 0;
+  $dish_skew_y = 0;
+  $top_skew = 0;
+  $height_slices = 1;
+  $corner_radius = 1;
+
+  // this is _incredibly_ intensive
+  /* $rounded_key = true; */
+
+  $top_tilt_y = side_tilt(column);
+  extra_height = $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  base_depth = 7.5;
+  if (n <= 1){
+    $total_depth = base_depth + 2.5 + extra_height;
+    $top_tilt = -13;
+
+    children();
+  } else if (n == 2) {
+    $total_depth = base_depth + 0.5 + extra_height;
+    $top_tilt = -7;
+
+    children();
+  } else if (n == 3) {
+    $total_depth = base_depth + extra_height;
+    $top_tilt = 0;
+
+    children();
+  } else if (n == 4){
+    $total_depth = base_depth + 0.5 + extra_height;
+    $top_tilt = 7;
+
+    children();
+  } else {
+    $total_depth = base_depth + extra_height;
+    $top_tilt = 0;
+
+    children();
+  }
+}
+
+module hexagonal_row(n=3, column=0) {
+  $key_shape_type = "hexagon";
+  regular_polygon_row(n,column) {
+    children();
+  }
+}
+
+module octagonal_row(n=3, column=0) {
+  $key_shape_type = "octagon";
+  regular_polygon_row(n, column) {
+    children();
+  }
+}

src/key_profiles/sa.scad

@@ -1,4 +1,7 @@
-module sa_row(n=3) {
+use <../functions.scad>
+include <../settings.scad>
+
+module sa_row(n=3, column=0) {
   $key_shape_type = "sculpted_square";
   $bottom_key_width = 18.4;
   $bottom_key_height = 18.4;
@@ -10,30 +13,42 @@ module sa_row(n=3) {
   $dish_skew_y = 0;
   $top_skew = 0;
   $height_slices = 10;
-  // might wanna change this if you don't minkowski
-  // do you even minkowski bro
-  $corner_radius = 0.25;
+
+  $corner_radius = 1;
+  $more_side_sculpting_factor = 0.4;
+
+  $side_sculpting = function(progress) (1 - progress) * 4.5;
+  $corner_sculpting = function(progress) pow(progress, 2);
+
+  // this is _incredibly_ intensive
+  /* $rounded_key = true; */
+
+  $top_tilt_y = side_tilt(column);
+  extra_height = $double_sculpted ? extra_side_tilt_height(column) : 0;
+
   // 5th row is usually unsculpted or the same as the row below it
   // making a super-sculpted top row (or bottom row!) would be real easy
   // bottom row would just be 13 tilt and 14.89 total depth
   // top row would be something new entirely - 18 tilt maybe?
-  if (n == 1 || n == 5){
-    $total_depth = 14.89;
+  if (n <= 1){
+    $total_depth = 14.89 + extra_height;
     $top_tilt = -13;
     children();
   } else if (n == 2) {
-    $total_depth = 12.925;
+    $total_depth = 12.925 + extra_height;
     $top_tilt = -7;
     children();
-  } else if (n == 3 || n == 5) {
-    $total_depth = 12.5;
+  } else if (n == 3) {
+    $total_depth = 12.5 + extra_height;
     $top_tilt = 0;
     children();
   } else if (n == 4){
-    $total_depth = 12.925;
+    $total_depth = 12.925 + extra_height;
     $top_tilt = 7;
     children();
   } else {
+    $total_depth = 12.5 + extra_height;
+    $top_tilt = 0;
     children();
   }
 }

src/key_profiles/typewriter.scad

@@ -0,0 +1,59 @@
+use <../functions.scad>
+include <../settings.scad>
+include <../constants.scad>
+// Regular polygon shapes CIRCUMSCRIBE the sphere of diameter $bottom_key_width
+// This is to make tiling them easier, like in the case of hexagonal keycaps etc
+
+// this function doesn't set the key shape, so you can't use it directly without some fiddling
+module typewriter_row(n=3, column=0) {
+  $bottom_key_width = $unit - 0.5;
+  $bottom_key_height = $unit - 0.5;
+  $width_difference = 0;
+  $height_difference = 0;
+  $dish_type = "spherical";
+  $key_shape_type = "circular";
+  $inverted_dish = true;
+  $stem_inset = -4.5;
+  $stem_throw = 5;
+  $dish_depth = 4;
+  $dish_skew_x = 0;
+  $dish_skew_y = 0;
+  $top_skew = 0;
+  $height_slices = 1;
+  $stem_support_type = "disable";
+//   $corner_radius = 1;
+
+  // this is _incredibly_ intensive
+  /* $rounded_key = true; */
+
+  $top_tilt_y = side_tilt(column);
+  extra_height = $double_sculpted ? extra_side_tilt_height(column) : 0;
+
+  base_depth = 3.5;
+  if (n <= 1){
+    $total_depth = base_depth + 2.5 + extra_height;
+    $top_tilt = -13;
+
+    children();
+  } else if (n == 2) {
+    $total_depth = base_depth + 0.5 + extra_height;
+    $top_tilt = -7;
+
+    children();
+  } else if (n == 3) {
+    $total_depth = base_depth + extra_height;
+    $top_tilt = 0;
+
+    children();
+  } else if (n == 4){
+    $total_depth = base_depth + 0.5 + extra_height;
+    $top_tilt = 7;
+
+    children();
+  } else {
+    $total_depth = base_depth + extra_height;
+    $top_tilt = 0;
+
+    children();
+  }
+}

src/key_sizes.scad

@@ -17,6 +17,10 @@ module 1_5u() {
   u(1.5) children();
 }
 
+module 1_75u(){
+  u(1.75) children();
+}
+
 module 2u() {
   u(2) children();
 }
@@ -25,6 +29,10 @@ module 2_25u() {
   u(2.25) children();
 }
 
+module 2_50u() {
+  u(2.5) children();
+}
+
 module 2_75u() {
   u(2.75) children();
 }

src/key_transformations.scad

@@ -1,10 +1,14 @@
 // kind of a catch-all at this point for any directive that doesn't fit in the other files
 
-//TODO duplicate def to not make this a special var. maybe not worth it
-unit = 19.05;
+include <constants.scad>
 
 module translate_u(x=0, y=0, z=0){
-  translate([x * unit, y*unit, z*unit]) children();
+  translate([x * $unit, y*$unit, z*$unit]) children();
+}
+
+module no_stem_support() {
+  $stem_support_type = "disable";
+  children();
 }
 
 module brimmed_stem_support(height = 0.4) {
@@ -39,9 +43,15 @@ module rotated() {
   children();
 }
 
+module vertically_stabilized(mm=12, vertical=true, type=undef) {
+  stabilized(mm,vertical,type) {
+    children();
+  }
+}
+
 module stabilized(mm=12, vertical = false, type=undef) {
   if (vertical) {
-    $stabilizer_type = type ? type : $stabilizer_type ? $stabilizer_type : "costar_stabilizer";
+    $stabilizer_type = (type ? type : ($stabilizer_type ? $stabilizer_type : "costar_stabilizer"));
     $stabilizers = [
     [0,  mm],
     [0, -mm]
@@ -49,7 +59,8 @@ module stabilized(mm=12, vertical = false, type=undef) {
 
     children();
   } else {
-    $stabilizer_type = type ? type : $stabilizer_type ? $stabilizer_type : "costar_stabilizer";
+    $stabilizer_type = (type ? type : ($stabilizer_type ? $stabilizer_type : "costar_stabilizer"));
+
 
     $stabilizers = [
       [mm,  0],
@@ -80,36 +91,58 @@ module blank() {
   children();
 }
 
-module cherry(slop) {
-  $stem_slop = slop ? slop : $stem_slop;
+module cherry(slop = undef) {
+  $stem_slop = slop != undef ? slop : $stem_slop;
   $stem_type = "cherry";
   children();
 }
 
-module alps(slop) {
-  $stem_slop = slop ? slop : $stem_slop;
+module alps(slop = undef) {
+  $stem_slop = slop != undef ? slop : $stem_slop;
   $stem_type = "alps";
   children();
 }
 
-module rounded_cherry(slop) {
-  $stem_slop = slop ? slop : $stem_slop;
+module rounded_cherry(slop = undef) {
+  $stem_slop = slop != undef ? slop : $stem_slop;
   $stem_type = "rounded_cherry";
   children();
 }
 
-module box_cherry(slop) {
-  $stem_slop = slop ? slop : $stem_slop;
+module box_cherry(slop = undef) {
+  $stem_slop = slop != undef ? slop : $stem_slop;
   $stem_type = "box_cherry";
   children();
 }
 
-module choc(slop) {
-  $stem_slop = slop ? slop : $stem_slop;
+module choc(slop = 0.05) {
+  echo("WARN:\n\n * choc support is experimental.\n * $stem_slop is overridden.\n * it is also recommended to print them upside down if you can\n\n");
+  $stem_throw = 3;
+  $stem_slop = slop;
+
+  $bottom_key_width = 18;
+  $bottom_key_height = 17;
+
   $stem_type = "choc";
   children();
 }
 
+// a hacky way to make "low profile" keycaps
+module low_profile() {
+  $width_difference = $width_difference / 1.5;
+  $height_difference = $height_difference / 1.5;
+  // helps tilted keycaps not have holes if worst comes to worst
+  $inner_shape_type = "dished";
+
+  $top_tilt = $top_tilt / 1.25;
+
+  $total_depth = ($total_depth / 2) < 7 ? 7 : $total_depth / 2;
+
+  // just to make sure
+  $stem_throw = 3;
+  children();
+}
+
 module flared_support() {
   $support_type = "flared";
   children();
@@ -125,9 +158,17 @@ module flat_support() {
   children();
 }
 
-module legend(text, position=[0,0], size=undef) {
+module legend(text, position=[0,0], size=undef, font=undef) {
     font_size = size == undef ? $font_size : size;
-    $legends = [for(L=[$legends, [[text, position, font_size]]], a=L) a];
+    font_face = font == undef ? $font : font;
+    $legends = [for(L=[$legends, [[text, position, font_size, font_face]]], a=L) a];
+    children();
+}
+
+module front_legend(text, position=[0,0], size=undef, font=undef) {
+    font_size = size == undef ? $font_size : size;
+    font_face = font == undef ? $font : font;
+    $front_legends = [for(L=[$front_legends, [[text, position, font_size, font_face]]], a=L) a];
     children();
 }
 
@@ -137,10 +178,113 @@ module bump(depth=undef) {
     children();
 }
 
-module low_profile() {
-  /* $total_depth = 5.35; */
-  /* extra ugly hack right now to make sure we don't generate keycaps with insufficient throw */
-  /* $total_depth = ($total_depth / 2) < 6 ? 6 : $total_depth / 2; */
-  $stem_throw = 3;
+// kinda dirty, but it works
+// might not work great with fully sculpted profiles yet
+// NOTE: this needs to come after row declarations or it won't work
+module upside_down() {
+  if ($stem_inner_slop != 0) {
+    echo("it is recommended you set inner stem slop to 0 when you use upside_down()");
+  }
+
+  $stem_support_type = "disable";
+  // $top_tilt*2 because top_placement rotates by top_tilt for us
+  // first rotate 180 to get the keycaps to face the same direction
+  rotate([0,0,180]) top_placement() rotate([180+$top_tilt*2,0,0]) {
+    children();
+  }
+}
+
+module sideways() {
+  $stem_support_type = "disable";
+  $key_shape_type = "flat_sided_square";
+  $dish_overdraw_width = abs(extra_keytop_length_for_flat_sides());
+  extra_y_rotation = atan2($width_difference/2,$total_depth); // TODO assumes centered top
+  translate([0,0,cos(extra_y_rotation) * total_key_width()/2])
+  rotate([0,90 + extra_y_rotation ,0]) children();
+}
+
+/* this is hard to explain. we want the angle of the back of the keycap.
+ * first we draw a line at the back of the keycap perpendicular to the ground.
+ * then we extend the line created by the slope of the keytop to that line
+ * the angle of the latter line off the ground is $top_tilt, and
+ * you can create a right triangle with the adjacent edge being $bottom_key_height/2
+ * raised up $total_depth. this gets you x, the component of the extended
+ * keytop slope line, and y, a component of the first perpendicular line.
+ * by a very similar triangle you get r and s, where x is the hypotenuse of that
+ * right triangle and the right angle is again against the first perpendicular line
+ * s is the opposite line in the right triangle required to find q, the angle
+ * of the back. if you subtract r from $total_depth plus y you can now use these
+ * two values in atan to find the angle of interest.
+ */
+module backside() {
+  $stem_support_type = "disable";
+
+  // $key_shape_type = "flat_sided_square";
+
+  a = $bottom_key_height;
+  b = $total_depth;
+  c = top_total_key_height();
+
+  x = (a / 2 - $top_skew) / cos(-$top_tilt) - c / 2;
+  y = sin(-$top_tilt) * (x + c/2);
+  r = sin(-$top_tilt) * x;
+  s = cos(-$top_tilt) * x;
+
+  q = atan2(s, (y + b - r));
+
+  translate([0,0,cos(q) * total_key_height()/2])
+    rotate([-90 - q, 0,0]) children();
+}
+
+// this is just backside with a few signs switched
+module frontside() {
+  $stem_support_type = "disable";
+
+  // $key_shape_type = "flat_sided_square";
+
+  a = $bottom_key_height;
+  b = $total_depth;
+  c = top_total_key_height();
+
+  x = (a / 2 + $top_skew) / cos($top_tilt) - c / 2;
+  y = sin($top_tilt) * (x + c/2);
+  r = sin($top_tilt) * x;
+  s = cos($top_tilt) * x;
+
+  q = atan2(s, (y + b - r));
+
+  translate([0,0,cos(q) * total_key_height()/2])
+  rotate([90 + q, 0,0]) children();
+}
+
+// emulating the % modifier.
+// since we use custom colors, just using the % modifier doesn't work
+module debug() {
+  $primary_color = [0.5,0.5,0.5,0.2];
+  $secondary_color = [0.5,0.5,0.5,0.2];
+  $tertiary_color = [0.5,0.5,0.5,0.2];
+  $quaternary_color = [0.5,0.5,0.5,0.2];
+
+  %children();
+}
+
+// auto-place children in a grid.
+// For this to work all children have to be single keys, no for loops etc
+module auto_place() {
+  num_children = $children;
+  row_size = round(pow(num_children, 0.5));
+
+  for (child_index = [0:num_children-1]) {
+    x = child_index % row_size;
+    y = floor(child_index / row_size);
+    translate_u(x,-y) children(child_index);
+  }
+}
+
+// suggested settings for resin prints
+module resin() {
+  $stem_slop = 0;
+  $stem_inner_slop = 0;
+  $stem_support_type = "disable";
   children();
 }

src/key_types.scad

@@ -1,6 +1,10 @@
+include <functions.scad>
+use <key_sizes.scad>
+use <key_transformations.scad>
+
 module spacebar() {
-  $inverted_dish = true;
-  $dish_type = "sideways cylindrical";
+  $inverted_dish = $dish_type != "disable";
+  $dish_type = $dish_type != "disable" ? "sideways cylindrical" : "disable";
   6_25u() stabilized(mm=50) children();
 }
 
@@ -43,15 +47,19 @@ module iso_enter() {
   $key_length = 1.5;
   $key_height = 2;
 
-  $top_tilt = 0;
+  $dish_offset_x = -(unit_length(1.5) - unit_length(1.25))/2;
+
+  /* $top_tilt = 0; */
+  $stem_support_type = "disable";
   $key_shape_type = "iso_enter";
-  $linear_extrude_shape = true;
+  $hull_shape_type = "skin";
   $linear_extrude_height_adjustment = 19.05 * 0.5;
   // this equals (unit_length(1.5) - unit_length(1.25)) / 2
-  $dish_overdraw_width = 2.38125;
-
+  /* $dish_overdraw_width = 2.38125; */
 
+  render() {
     stabilized(vertical=true) {
       children();
     }
   }
+}

src/layouts/60_percent/default.scad

@@ -0,0 +1,21 @@
+include <../layout.scad>
+
+60_percent_default_layout = [
+  [1,1,1,1,1,1,1,1,1,1,1,1,1,2],
+  [1.5,1,1,1,1,1,1,1,1,1,1,1,1,1.5],
+  [1.75,1,1,1,1,1,1,1,1,1,1,1,2.25],
+  [2.25,1,1,1,1,1,1,1,1,1,1,2.75],
+  [1.25,1.25,1.25,6.25,1.25,1.25,1.25,1.25]
+];
+
+60_percent_legends = [
+  ["`", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "-", "=", "⌫"],
+  ["tab", "q", "w", "e", "r", "t", "y", "u", "i", "o", "p", "[", "]", "\\"],
+  ["caps", "a", "s", "d", "f", "g", "h", "j", "k", "l", ";", "'", "enter"],
+  ["shift", "z", "x", "c", "v", "b", "n", "m", ",", ".", "/", "shift"],
+  ["ctl", "win", "alt", "", "mnu", "win", "alt", "ctl"],
+];
+
+module 60_percent_default(profile) {
+  layout(60_percent_default_layout, profile, 60_percent_legends, row_sculpting_offset=1) children();
+}

src/layouts/dactyl_manuform/4x6.scad

@@ -0,0 +1,26 @@
+include <../layout.scad>
+
+dactyl_manuform_4x6_main = [
+  [1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1],
+  [-1, -1, 1, 1, -1, -1, -1, -1, -1, 1, 1, -1, -1]
+];
+
+dactyl_manuform_4x6_thumbs_l = [
+  [1.25, 1.25],
+  [-0.25, 1, 1],
+  [-0.25, 1, 1]
+];
+
+dactyl_manuform_4x6_thumbs_r = [
+  [1.25, 1.25],
+  [-0.25, 1, 1],
+  [-0.25, 1, 1]
+];
+
+module dactyl_manuform_4x6(profile) {
+  layout(dactyl_manuform_4x6_main, profile) children();
+  translate_u(3,-5) rotate([0,0,25])layout(dactyl_manuform_4x6_thumbs_l, profile, row_override=3) children();
+  translate_u(7.75,-3.95) rotate([0,0,-25])layout(dactyl_manuform_4x6_thumbs_r, profile, row_override=3) children();
+}

src/layouts/dactyl_manuform/4x6_legends.scad

@@ -0,0 +1,64 @@
+include <../layout.scad>
+
+dactyl_manuform_4x6_main = [
+  [1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1],
+  [-1, -1, 1, 1, -1, -1, -1, -1, -1, 1, 1, -1, -1]
+];
+
+dactyl_manuform_4x6_thumbs_l = [
+  [1.25, 1.25],
+  [-0.25, 1, 1],
+  [-0.25, 1, 1]
+];
+
+dactyl_manuform_4x6_thumbs_r = [
+  [1.25, 1.25],
+  [-0.25, 1, 1],
+  [-0.25, 1, 1]
+];
+
+dactyl_manuform_4x6_main_legends = [
+  ["ESC", "Q", "W", "E", "R", "T", "", "Y", "U", "I", "O", "P", "{["],
+  ["LS", "A", "S", "D", "F", "G", "", "H", "J", "K", "L", ";:", "'\""],
+  ["TAB", "Z", "X", "C", "V", "B", "", "N", "M", ",<", ".>", "/?", "\\|"],
+  ["", "", "CAPS", "T(1)", "", "", "", "", "", "T(2)", "]}", "", ""]
+];
+
+dactyl_manuform_4x6_main_front_legends = [
+  ["F1", "F2", "F3", "F4", "F5", "F6", "", "F7", "F8", "F9", "F10", "F11", "F12"],
+  ["", "", "", "", "", "PGUP", "", "", "UP", "", "", "", ""],
+  ["", "", "", "", "", "PGDN", "", "LFT", "DWN", "RHT", "", "", ""],
+  ["", "", "", "T(0)", "", "", "", "", "", "T(2)", "", "", ""]
+];
+
+dactyl_manuform_4x6_thumbs_l_legends = [
+  ["~`", "LCTL"],
+  ["", "RALT", "LCMD"],
+  ["", "MEH", "T(2)"]
+];
+
+dactyl_manuform_4x6_thumbs_l_front_legends = [
+  ["", ""],
+  ["", "PSC", "LCMD"],
+  ["", "", "TEMP"]
+];
+
+dactyl_manuform_4x6_thumbs_r_legends = [
+  ["", "BKSP"],
+  ["", "ENTR", "CP"],
+  ["", "T(1)", "PST"]
+];
+
+dactyl_manuform_4x6_thumbs_r_front_legends = [
+  ["", ""],
+  ["", "", ""],
+  ["", "TEMP", ""]
+];
+
+module dactyl_manuform_4x6_legends(profile, row_sculpting_offset=1, column_override=undef) {
+  layout(dactyl_manuform_4x6_main, profile, legends=dactyl_manuform_4x6_main_legends, front_legends=dactyl_manuform_4x6_main_front_legends, row_sculpting_offset=row_sculpting_offset, column_override=column_override, column_sculpt_profile="cresting_wave") children();
+  translate_u(3,-5) rotate([0,0,25]) layout(dactyl_manuform_4x6_thumbs_l, profile, legends=dactyl_manuform_4x6_thumbs_l_legends, front_legends=dactyl_manuform_4x6_thumbs_l_front_legends, row_sculpting_offset=row_sculpting_offset, column_override=column_override, column_sculpt_profile="cresting_wave") children();
+  translate_u(7.75,-3.95) rotate([0,0,-25]) layout(dactyl_manuform_4x6_thumbs_r, profile, legends=dactyl_manuform_4x6_thumbs_r_legends, front_legends=dactyl_manuform_4x6_thumbs_r_front_legends, row_sculpting_offset=row_sculpting_offset, column_override=column_override, column_sculpt_profile="cresting_wave") children();
+}

src/layouts/gherkin/default.scad

@@ -0,0 +1,18 @@
+include <../layout.scad>
+
+// negative numbers are used for spacing
+gherkin_default_layout = [
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+];
+
+gherkin_default_legends = [
+  ["q", "w", "e", "r", "t", "y", "u", "i", "o", "p"],
+  ["a", "s", "d", "f", "g", "h", "j", "k", "l", ";"],
+  ["z", "x", "c", "v", "b", "n", "m", ",", ".", "/"],
+];
+
+module gherkin_default(profile) {
+  layout(gherkin_default_layout, profile, legends=gherkin_default_legends, row_sculpting_offset=1, row_override=3) children();
+}

src/layouts/gherkin/gherkin_bump.scad

@@ -0,0 +1,22 @@
+include <../layout.scad>
+
+// negative numbers are used for spacing
+gherkin_bump_mapping = [
+  [1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1],
+  [-1, -1, -1, -1, 2, -1, -1, -1, -1],
+];
+
+gherkin_bump_legends = [
+  ["q", "w", "e", "r", "t", "", "y", "u", "i", "o", "p"],
+  ["a", "s", "d", "f", "g", "", "h", "j", "k", "l", ";"],
+  ["z", "x", "c", "v", "b", "", "n", "m", ",", ".", "/"],
+  ["", "", "", "", "", "", "", "", ""],
+];
+
+module gherkin_bump_layout(profile, row_sculpting_offset=1, column_override=undef) {
+  layout(gherkin_bump_mapping, profile, legends=gherkin_bump_legends, row_sculpting_offset=row_sculpting_offset, column_override=column_override, column_sculpt_profile="cresting_wave") {
+    children();
+  };
+}

src/layouts/hhkb/default.scad

@@ -0,0 +1,21 @@
+include <../layout.scad>
+
+hhkb_layout = [
+  [1,1,1,1,1,1,1,1,1,1,1,1,1,1,1],
+  [1.5,1,1,1,1,1,1,1,1,1,1,1,1,1.5],
+  [1.75,1,1,1,1,1,1,1,1,1,1,1,2.25],
+  [2.25,1,1,1,1,1,1,1,1,1,1,1.75,1],
+  [-1.5,1,1.5,6,1.5,1]
+];
+
+hhkb_legends = [
+  ["Esc", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "-", "=", "\\", "`"],
+  ["Tab", "q", "w", "e", "r", "t", "y", "u", "i", "o", "p", "[", "]", "Delete"],
+  ["Ctrl", "a", "s", "d", "f", "g", "h", "j", "k", "l", ";", "'", "Return"],
+  ["Shift", "z", "x", "c", "v", "b", "n", "m", ",", ".", "/", "Shift", "Fn"],
+  ["", "Alt", "Cmd", "", "Cmd", "Alt"],
+];
+
+module hhkb_default(profile) {
+  layout(hhkb_layout, profile, hhkb_legends) children();
+}

src/layouts/layout.scad

@@ -0,0 +1,134 @@
+use <../key_transformations.scad>
+use <../key_profiles.scad>
+use <../key_sizes.scad>
+use <../key_types.scad>
+
+// sums all values, unless a value is negative, in which case it makes it positive
+// dirty hack to allow for large gaps in keysets
+function abs_sum(list, x=0) =
+  len(list) <= 1 ?
+    x + abs(list[0]) :
+    abs_sum([for (x = [1: len(list) - 1]) list[x]], x+abs(list[0]));
+
+function 2hands(index, total) = ((index+0.5) % (total/2)) - (total/4);
+function cresting_wave(index, total, mod=4) = (index < total/2) ? (((index + 0.5) / total)*mod) : -(mod - ((index + 0.5) / total * mod));
+function 1hand(index, total) = (index % (total)) - (total/2);
+
+
+// chooses between all the sculpting options
+// checks if column is smack in middle of row - if so, no sculpting
+// since we are zero indexed, the 7th row has an index of 6 and is the center of 13. 6*2+1 = 13
+function double_sculpted_column(column, row_length, column_sculpt_profile) =
+  (column*2 + 1 == row_length) ?
+    0 : (column_sculpt_profile == "2hands") ?
+      2hands(column, row_length) : (column_sculpt_profile == "1hand") ?
+        1hand(column, row_length) : (column_sculpt_profile == "cresting_wave") ?
+          cresting_wave(column, row_length) : 0;
+
+module layout(list, profile="dcs", legends=undef, front_legends=undef, row_sculpting_offset=0, row_override=undef, column_sculpt_profile="2hands", column_override=undef) {
+  for (row = [0:len(list)-1]){
+    /* echo("**ROW**:", row); */
+    row_length = len(list[row]);
+
+    for(column = column_override ? column_override : [0:len(list[row])-1]) {
+      row_sculpting = (row_override != undef ? row_override : row) + row_sculpting_offset;
+      key_length = list[row][column];
+      column_value = double_sculpted_column(column, row_length, column_sculpt_profile);
+      column_distance = abs_sum([for (x = [0 : column]) list[row][x]]);
+
+      /* echo("\t**COLUMN**", "column_value", column_value, "column_distance", column_distance); */
+
+      // supports negative values for nonexistent keys
+      if (key_length >= 1) {
+        translate_u(column_distance - (key_length/2), -row) {
+        
+          key_profile(profile, row_sculpting, column_value) u(key_length) legend(legends ? legends[row][column] : "") front_legend(front_legends ? front_legends[row][column] : "") cherry() { // (row+4) % 5 + 1
+          $row = row;
+          $column = column;
+
+            if (key_length == 6.25) {
+              spacebar() {
+                if ($children) {
+                  children();
+                } else {
+                  key();
+                }
+              }
+            } else if (key_length == 2.25) {
+              lshift() {
+                if ($children) {
+                  children();
+                } else {
+                  key();
+                }
+              }
+            } else if (key_length == 2) {
+              backspace() {
+                if ($children) {
+                  children();
+                } else {
+                  key();
+                }
+              }
+            } else if (key_length == 2.75) {
+              rshift() {
+                if ($children) {
+                  children();
+                } else {
+                  key();
+                }
+              }
+            } else {
+              {
+                if ($children) {
+                  children();
+                } else {
+                  key();
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  }
+}
+
+// much simpler, decoupled layout function
+// requires more setup - it only does what is in the layout array, which is translate
+// and key length. you have to do row / column profile yourself and always pass
+// children()
+// this is probably the way we'll go forward
+module simple_layout(list) {
+  for (row = [0:len(list)-1]){
+    /* echo("**ROW**:", row); */
+    for(column = [0:len(list[row])-1]) {
+      key_length = list[row][column];
+      column_distance = abs_sum([for (x = [0 : column]) list[row][x]]);
+
+      /* echo("\t**COLUMN**", "column_value", column_value, "column_distance", column_distance); */
+
+      // supports negative values for nonexistent keys
+      if (key_length >= 1) {
+        translate_u(column_distance - (key_length/2), -row) {
+          u(key_length) { // (row+4) % 5 + 1
+            $row = row;
+            $column = column;
+
+            if (key_length == 6.25) {
+              spacebar() children();
+            } else if (key_length == 2.25) {
+              lshift() children();
+            } else if (key_length == 2) {
+              backspace() children();
+            } else if (key_length == 2.75) {
+              rshift() children();
+            } else {
+              children();
+            }
+          }
+        }
+      }
+    }
+  }
+}

src/layouts/lets_split/default.scad

@@ -0,0 +1,13 @@
+include <../layout.scad>
+
+// negative numbers are used for spacing
+lets_split_layout = [
+  [1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1]
+];
+
+module lets_split_default(profile) {
+  layout(lets_split_layout, profile, row_sculpting_offset=1) children();
+}

src/layouts/planck/default.scad

@@ -0,0 +1,23 @@
+include <../layout.scad>
+
+// 0's are to make space for a middle row for just the spacebar so that it
+// isn't sculpted with double sculpting. the 0's in the first three rows
+// don't _need_ to be there but it's nice to keep track
+planck_default_layout = [
+  [1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 0, 2, 0, 1, 1, 1, 1, 1]
+];
+
+planck_default_legends = [
+  [  "⇥",   "Q",   "W",   "E",   "R", "T", "Y",   "U", "I", "O", "P", "⌫"],
+  ["Esc",   "A",   "S",   "D",   "F", "G", "H",   "J", "K", "L", ";", "⏎"],
+  [  "⇧",   "Z",   "X",   "C",   "V", "B", "N",   "M", ",", ".", "/", "⇧"],
+  [ "Fn", "Ctl", "Alt", "Cmd", "Lwr",  "",  "", "RSE", "←", "↓", "↑", "→"],
+];
+
+
+module planck_default(profile, column_sculpt_profile="2hands") {
+  layout(planck_default_layout, profile, row_sculpting_offset=1, column_sculpt_profile=column_sculpt_profile) children();
+}

src/layouts/planck/mit.scad

@@ -0,0 +1,15 @@
+include <../layout.scad>
+
+// 0's are to make space for a middle row for just the spacebar so that it
+// isn't sculpted with double sculpting. the 0's in the first three rows
+// don't _need_ to be there but it's nice to keep track
+planck_layout_mapping = [
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
+];
+
+module planck_mit(profile) {
+  layout(planck_layout_mapping, profile, row_sculpting_offset=1) children();
+}

src/layouts/plate.scad

@@ -0,0 +1,29 @@
+// No support for stabilizers yet - but should be easy enough
+// Won't work well for split layouts. or, it'll work fine - but it'll only be
+// one plate.
+
+// each corner
+module unit_corners(height = 3, radius=3, $fn=24) {
+  positions = [
+    [-$key_length/2, -$key_height/2],
+    [$key_length/2, -$key_height/2],
+    [$key_length/2, $key_height/2],
+    [-$key_length/2, $key_height/2],
+  ];
+  for (position = positions) {
+    translate_u(position.x, position.y) cylinder(h=height, r=radius, $fn=$fn);
+  }
+}
+
+module switch_hole() {
+  cube(14, center=true);
+}
+
+module plate(layout_object) {
+  difference() {
+    hull() {
+      simple_layout(layout_object) unit_corners();
+    }
+    simple_layout(layout_object) switch_hole();
+  }
+}

src/layouts/preonic/default.scad

@@ -0,0 +1,21 @@
+include <../layout.scad>
+
+preonic_default_layout = [
+  [1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 0, 2, 0, 1, 1, 1, 1, 1]
+];
+
+preonic_default_legends = [
+  [  "`",   "1",   "2",   "3",   "4", "5",  "", "6",  "7", "8", "9", "0", "-"],
+  [  "⇥",   "Q",   "W",   "E",   "R", "T",  "", "Y",  "U", "I", "O", "P", "⌫"],
+  ["Esc",   "A",   "S",   "D",   "F", "G",  "", "H",  "J", "K", "L", ";", "⏎"],
+  [  "⇧",   "Z",   "X",   "C",   "V", "B",  "", "N",  "M", ",", ".", "/", "⇧"],
+  [ "Fn", "Ctl", "Alt", "Cmd", "Lwr",  "",  "", "", "RSE", "←", "↓", "↑", "→"],
+];
+
+module preonic_default(profile, column_sculpt_profile="2hands") {
+  layout(preonic_default_layout, profile, column_sculpt_profile=column_sculpt_profile) children();
+}

src/layouts/preonic/mit.scad

@@ -0,0 +1,21 @@
+include <../layout.scad>
+
+preonic_mit_layout = [
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1],
+  [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
+];
+
+preonic_mit_legends = [
+  [  "`",   "1",   "2",   "3",   "4", "5", "6",   "7", "8", "9", "0", "-"],
+  [  "⇥",   "Q",   "W",   "E",   "R", "T", "Y",   "U", "I", "O", "P", "⌫"],
+  ["Esc",   "A",   "S",   "D",   "F", "G", "H",   "J", "K", "L", ";", "⏎"],
+  [  "⇧",   "Z",   "X",   "C",   "V", "B", "N",   "M", ",", ".", "/", "⇧"],
+  [ "Fn", "Ctl", "Alt", "Cmd", "Lwr",  "",  "", "RSE", "←", "↓", "↑", "→"],
+];
+
+module planck_mit(profile) {
+  layout(preonic_mit_layout, profile, legends=preonic_mit_legends, row_sculpting_offset=1) children();
+}

src/layouts/project_zen/default.scad

@@ -0,0 +1,19 @@
+include <../layout.scad>
+
+project_zen_main = [
+  [1.5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1.5],
+  [1.5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1.5],
+  [1.5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1.5],
+  [1.5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1.5],
+  [1.5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1.5]
+];
+
+project_zen_thumbs = [
+  [2,2],
+  [2,2],
+];
+
+module project_zen_default(profile) {
+  layout(project_zen_main, profile) children();
+  translate_u(4.5,-5) layout(project_zen_thumbs, profile, row_override=3) children();
+}

src/libraries/3d_surface.scad

@@ -0,0 +1,79 @@
+// thanks Paul https://github.com/openscad/list-comprehension-demos/
+
+include <../functions.scad>
+
+module 3d_surface(size=$3d_surface_size, step=$3d_surface_step, bottom=-SMALLEST_POSSIBLE){
+  function p(x, y) = [ x, y, max(0,$surface_function(x, y) * $corner_smoothing_surface_function(x,y)) ];
+  function p0(x, y) = [ x, y, bottom ];
+  function rev(b, v) = b ? v : [ v[3], v[2], v[1], v[0] ];
+  function face(x, y) = [ p(x, y + step), p(x + step, y + step), p(x + step, y), p(x + step, y), p(x, y), p(x, y + step) ];
+  function fan(a, i) =
+        a == 0 ? [ [ 0, 0, bottom ], [ i, -size, bottom ], [ i + step, -size, bottom ] ]
+      : a == 1 ? [ [ 0, 0, bottom ], [ i + step,  size, bottom ], [ i,  size, bottom ] ]
+      : a == 2 ? [ [ 0, 0, bottom ], [ -size, i + step, bottom ], [ -size, i, bottom ] ]
+      :          [ [ 0, 0, bottom ], [  size, i, bottom ], [  size, i + step, bottom ] ];
+  function sidex(x, y) = [ p0(x, y), p(x, y), p(x + step, y), p0(x + step, y) ];
+  function sidey(x, y) = [ p0(x, y), p(x, y), p(x, y + step), p0(x, y + step) ];
+
+  points = flatten(concat(
+      // top surface
+      [ for (x = [ -size : step : size - step ], y = [ -size : step : size - step ]) face(x, y) ],
+      // bottom surface as triangle fan
+      [ for (a = [ 0 : 3 ], i = [ -size : step : size - step ]) fan(a, i) ],
+      // sides
+      [ for (x = [ -size : step : size - step ], y = [ -size, size ]) rev(y < 0, sidex(x, y)) ],
+      [ for (y = [ -size : step : size - step ], x = [ -size, size ]) rev(x > 0, sidey(x, y)) ]
+  ));
+
+  tcount = 2 * pow(2 * size / step, 2) + 8 * size / step;
+  scount = 8 * size / step;
+
+  tfaces = [ for (a = [ 0 : 3 : 3 * (tcount - 1) ] ) [ a, a + 1, a + 2 ] ];
+  sfaces = [ for (a = [ 3 * tcount : 4 : 3 * tcount + 4 * scount ] ) [ a, a + 1, a + 2, a + 3 ] ];
+  faces = concat(tfaces, sfaces);
+
+  polyhedron(points, faces, convexity = 8);
+}
+
+module polar_3d_surface(size, step, bottom=-SMALLEST_POSSIBLE){
+  function to_polar(q, size) = q * (90 / size);
+
+  function p(x, y) = [
+    $surface_distribution_function(to_polar(x, size), size),
+    $surface_distribution_function(to_polar(y, size), size),
+    max(0,$surface_function($surface_distribution_function(to_polar(x, size), size), $surface_distribution_function(to_polar(y, size), size)) * $corner_smoothing_surface_function($surface_distribution_function(to_polar(x, size), size), $surface_distribution_function(to_polar(y, size), size)))
+  ];
+  function p0(x, y) = [ x, y, bottom ];
+  function rev(b, v) = b ? v : [ v[3], v[2], v[1], v[0] ];
+  function face(x, y) = [ p(x, y + step), p(x + step, y + step), p(x + step, y), p(x + step, y), p(x, y), p(x, y + step) ];
+  function fan(a, i) =
+        a == 0 ? [ [ 0, 0, bottom ], [ i, -size, bottom ], [ i + step, -size, bottom ] ]
+      : a == 1 ? [ [ 0, 0, bottom ], [ i + step,  size, bottom ], [ i,  size, bottom ] ]
+      : a == 2 ? [ [ 0, 0, bottom ], [ -size, i + step, bottom ], [ -size, i, bottom ] ]
+      :          [ [ 0, 0, bottom ], [  size, i, bottom ], [  size, i + step, bottom ] ];
+  function sidex(x, y) = [ p0(x, y), p(x, y), p(x + step, y), p0(x + step, y) ];
+  function sidey(x, y) = [ p0(x, y), p(x, y), p(x, y + step), p0(x, y + step) ];
+
+  points = flatten(concat(
+      // top surface
+      [ for (x = [ -size : step : size - step ], y = [ -size : step : size - step ]) face(x, y) ],
+      // bottom surface as triangle fan
+      [ for (a = [ 0 : 3 ], i = [ -size : step : size - step ]) fan(a, i) ],
+      // sides
+      [ for (x = [ -size : step : size - step ], y = [ -size, size ]) rev(y < 0, sidex(x, y)) ],
+      [ for (y = [ -size : step : size - step ], x = [ -size, size ]) rev(x > 0, sidey(x, y)) ]
+  ));
+
+  tcount = 2 * pow(2 * size / step, 2) + 8 * size / step;
+  scount = 8 * size / step;
+
+  tfaces = [ for (a = [ 0 : 3 : 3 * (tcount - 1) ] ) [ a, a + 1, a + 2 ] ];
+  sfaces = [ for (a = [ 3 * tcount : 4 : 3 * tcount + 4 * scount ] ) [ a, a + 1, a + 2, a + 3 ] ];
+  faces = concat(tfaces, sfaces);
+
+  polyhedron(points, faces, convexity = 8);
+}
+
+// defaults, overridden in functions.scad
+// $surface_distribution_function = function(dim, size) sin(dim) * size;
+// $surface_function = function(x,y) (sin(acos(x/$3d_surface_size))) * sin(acos(y/$3d_surface_size));

src/libraries/round-anything/polyround.scad

@@ -0,0 +1,687 @@
+// Library: round-anything
+// Version: 1.0
+// Author: IrevDev
+// Contributors: TLC123
+// Copyright: 2020
+// License: MIT
+
+
+function addZcoord(points,displacement)=[for(i=[0:len(points)-1])[points[i].x,points[i].y, displacement]];
+function translate3Dcoords(points,tran=[0,0,0],mult=[1,1,1])=[for(i=[0:len(points)-1])[
+  (points[i].x*mult.x)+tran.x,
+  (points[i].y*mult.y)+tran.y,
+  (points[i].z*mult.z)+tran.z
+]];
+function offsetPolygonPoints(points, offset=0)=
+// Work sthe same as the offset does, except for the fact that instead of a 2d shape
+// It works directly on polygon points
+// It returns the same number of points just offset into or, away from the original shape.
+// points= a series of x,y points[[x1,y1],[x2,y2],...]
+// offset= amount to offset by, negative numbers go inwards into the shape, positive numbers go out
+// return= a series of x,y points[[x1,y1],[x2,y2],...]
+let(
+  isCWorCCW=sign(offset)*CWorCCW(points)*-1,
+  lp=len(points)
+)
+[for(i=[0:lp-1]) parallelFollow([
+  points[listWrap(i-1,lp)],
+  points[i],
+  points[listWrap(i+1,lp)],
+],thick=offset,mode=isCWorCCW)];
+
+function makeCurvedPartOfPolyHedron(radiiPoints,r,fn,minR=0.01)=
+// this is a private function that I'm not expecting library users to use directly
+// radiiPoints= serise of x, y, r points
+// r= radius of curve that will be put on the end of the extrusion
+// fn= amount of subdivisions
+// minR= if one of the points in radiiPoints is less than r, it's likely to converge and form a sharp edge,
+//     the min radius on these converged edges can be controled with minR, though because of legacy reasons it can't be 0, but can be a very small number.
+// return= array of [polyhedronPoints, Polyhedronfaces, theLength of a singe layer in the curve]
+let(
+  lp=len(radiiPoints),
+  radii=[for(i=[0:lp-1])radiiPoints[i].z],
+  isCWorCCWOverall=CWorCCW(radiiPoints),
+  dir=sign(r),
+  absR=abs(r),
+  fractionOffLp=1-1/fn,
+  allPoints=[for(fraction=[0:1/fn:1])
+    let(
+      iterationOffset=dir*sqrt(sq(absR)-sq(fraction*absR))-dir*absR,
+      theOffsetPoints=offsetPolygonPoints(radiiPoints,iterationOffset),
+      polyRoundOffsetPoints=[for(i=[0:lp-1])
+        let(
+          pointsAboutCurrent=[
+            theOffsetPoints[listWrap(i-1,lp)],
+            theOffsetPoints[i],
+            theOffsetPoints[listWrap(i+1,lp)]
+          ],
+          isCWorCCWLocal=CWorCCW(pointsAboutCurrent),
+          isInternalRadius=(isCWorCCWLocal*isCWorCCWOverall)==-1,
+          // the radius names are only true for positive r,
+          // when are r is negative increasingRadius is actually decreasing and vice-vs
+          // increasingRadiusWithPositiveR is just to verbose of a variable name for my liking
+          increasingRadius=max(radii[i]-iterationOffset, minR),
+          decreasingRadius=max(radii[i]+iterationOffset, minR)
+        )
+        [theOffsetPoints[i].x, theOffsetPoints[i].y, isInternalRadius? increasingRadius: decreasingRadius]
+      ],
+      pointsForThisLayer=polyRound(polyRoundOffsetPoints,fn)
+    )
+    addZcoord(pointsForThisLayer,fraction*absR)
+  ],
+  polyhedronPoints=flatternArray(allPoints),
+  allLp=len(allPoints),
+  layerLength=len(allPoints[0]),
+  loopToSecondLastLayer=allLp-2,
+  sideFaces=[for(layerIndex=[0:loopToSecondLastLayer])let(
+    currentLayeroffset=layerIndex*layerLength,
+    nextLayeroffset=(layerIndex+1)*layerLength,
+    layerFaces=[for(subLayerIndex=[0:layerLength-1])
+      [
+        currentLayeroffset+subLayerIndex, currentLayeroffset + listWrap(subLayerIndex+1,layerLength), nextLayeroffset+listWrap(subLayerIndex+1,layerLength), nextLayeroffset+subLayerIndex]
+    ]
+  )layerFaces],
+  polyhedronFaces=flatternArray(sideFaces)
+)
+[polyhedronPoints, polyhedronFaces, layerLength];
+
+function flatternRecursion(array, init=[], currentIndex)=
+// this is a private function, init and currentIndex are for the function's use 
+// only for when it's calling itself, which is why there is a simplified version flatternArray that just calls this one
+// array= array to flattern by one level of nesting
+// init= the array used to cancat with the next call, only for when the function calls itself
+// currentIndex= so the function can keep track of how far it's progressed through the array, only for when it's calling itself
+// returns= flatterned array, by one level of nesting
+let(
+  shouldKickOffRecursion=currentIndex==undef?1:0,
+  isLastIndex=currentIndex+1==len(array)?1:0,
+  flatArray=shouldKickOffRecursion?flatternRecursion(array,[],0):
+    isLastIndex?concat(init,array[currentIndex]):
+    flatternRecursion(array,concat(init,array[currentIndex]),currentIndex+1)
+)
+flatArray;
+
+function flatternArray(array)=
+// public version of flatternRecursion, has simplified params to avoid confusion
+// array= array to be flatterned
+// return= array that been flatterend by one level of nesting
+flatternRecursion(array);
+
+function offsetAllFacesBy(array,offset)=[
+  // polyhedron faces are simply a list of indices to points, if your concat points together than you probably need to offset
+  // your faces array to points to the right place in the new list
+  // array= array of point indicies
+  // offset= number to offset all indecies by
+  // return= array of point indices (i.e. faces) with offset applied
+  for(faceIndex=[0:len(array)-1])[
+    for(pointIndex=[0:len(array[faceIndex])-1])array[faceIndex][pointIndex]+offset
+  ]
+];
+
+function extrudePolygonWithRadius(radiiPoints,h=5,r1=1,r2=1,fn=4)=
+// this basically calls makeCurvedPartOfPolyHedron twice to get the curved section of the final polyhedron
+// and then goes about assmbling them, as the side faces and the top and bottom face caps are missing
+// radiiPoints= series of [x,y,r] points,
+// h= height of the extrude (total including radius sections)
+// r1,r2= define the radius at the top and bottom of the extrud respectively, negative number flange out the extrude
+// fn= number of subdivisions
+// returns= [polyhedronPoints, polyhedronFaces]
+let(
+  // top is the top curved part of the extrude
+  top=makeCurvedPartOfPolyHedron(radiiPoints,r1,fn),
+  topRadiusPoints=translate3Dcoords(top[0],[0,0,h-r1]),
+  singeLayerLength=top[2],
+  topRadiusFaces=top[1],
+  radiusPointsLength=len(topRadiusPoints), // is the same length as bottomRadiusPoints
+  // bottom is the bottom curved part of the extrude
+  bottom=makeCurvedPartOfPolyHedron(radiiPoints,r2,fn),
+  // Z axis needs to be multiplied by -1 to flip it so the radius is going in the right direction [1,1,-1]
+  bottomRadiusPoints=translate3Dcoords(bottom[0],[0,0,abs(r2)],[1,1,-1]),
+  // becaues the points will be all concatenated into the same array, and the bottom points come second, than
+  // the original indices the faces are points towards are wrong and need to have an offset applied to them
+  bottomRadiusFaces=offsetAllFacesBy(bottom[1],radiusPointsLength),
+  // all of the side panel of the extrusion, connecting points from the inner layers of each
+  // of the curved sections
+  sideFaces=[for(i=[0:singeLayerLength-1])[
+    i,
+    listWrap(i+1,singeLayerLength),
+    radiusPointsLength + listWrap(i+1,singeLayerLength),
+    radiusPointsLength + i
+  ]],
+  // both of these caps are simple every point from the last layer of the radius points
+  topCapFace=[for(i=[0:singeLayerLength-1])radiusPointsLength-singeLayerLength+i],
+  bottomCapFace=[for(i=[0:singeLayerLength-1])radiusPointsLength*2-singeLayerLength+i],
+  finalPolyhedronPoints=concat(topRadiusPoints,bottomRadiusPoints),
+  finalPolyhedronFaces=concat(topRadiusFaces,bottomRadiusFaces, sideFaces, [topCapFace], [bottomCapFace])
+)
+[
+  finalPolyhedronPoints,
+  finalPolyhedronFaces
+];
+
+module polyRoundExtrude(radiiPoints,length=5,r1=1,r2=1,fn=10,convexity=10) {
+  polyhedronPointsNFaces=extrudePolygonWithRadius(radiiPoints,length,r1,r2,fn);
+  polyhedron(points=polyhedronPointsNFaces[0], faces=polyhedronPointsNFaces[1], convexity=convexity);
+}
+
+
+// testingInternals();
+module testingInternals(){
+  //example of rounding random points, this has no current use but is a good demonstration
+  random=[for(i=[0:20])[rnd(0,50),rnd(0,50),/*rnd(0,30)*/1000]];
+  R =polyRound(random,7);
+  translate([-25,25,0]){
+    polyline(R);
+  }
+  
+  //example of different modes of the CentreN2PointsArc() function 0=shortest arc, 1=longest arc, 2=CW, 3=CCW
+  p1=[0,5];p2=[10,5];centre=[5,0];
+  translate([60,0,0]){
+    color("green"){
+      polygon(CentreN2PointsArc(p1,p2,centre,0,20));//draws the shortest arc
+    }
+    color("cyan"){
+      polygon(CentreN2PointsArc(p1,p2,centre,1,20));//draws the longest arc
+    }
+  }
+  translate([75,0,0]){
+    color("purple"){
+      polygon(CentreN2PointsArc(p1,p2,centre,2,20));//draws the arc CW (which happens to be the short arc)
+    }
+    color("red"){
+      polygon(CentreN2PointsArc(p2,p1,centre,2,20));//draws the arc CW but p1 and p2 swapped order resulting in the long arc being drawn
+    }
+  }
+  
+  radius=6;
+  radiipoints=[[0,0,0],[10,20,radius],[20,0,0]];
+  tangentsNcen=round3points(radiipoints);
+  translate([10,0,0]){
+    for(i=[0:2]){
+      color("red")translate(getpoints(radiipoints)[i])circle(1);//plots the 3 input points
+      color("cyan")translate(tangentsNcen[i])circle(1);//plots the two tangent poins and the circle centre
+    }
+    translate([tangentsNcen[2][0],tangentsNcen[2][1],-0.2])circle(r=radius,$fn=25);//draws the cirle
+    %polygon(getpoints(radiipoints));//draws a polygon
+  }
+}
+
+function polyRound(radiipoints,fn=5,mode=0)=
+  /*Takes a list of radii points of the format [x,y,radius] and rounds each point
+    with fn resolution
+    mode=0 - automatic radius limiting - DEFAULT
+    mode=1 - Debug, output radius reduction for automatic radius limiting
+    mode=2 - No radius limiting*/
+  let(
+    p=getpoints(radiipoints), //make list of coordinates without radii
+    Lp=len(p),
+    //remove the middle point of any three colinear points, otherwise adding a radius to the middle of a straigh line causes problems
+    radiiPointsWithoutTrippleColinear=[
+      for(i=[0:len(p)-1]) if(
+        // keep point if it isn't colinear or if the radius is 0
+        !isColinear(
+          p[listWrap(i-1,Lp)],
+          p[listWrap(i+0,Lp)],
+          p[listWrap(i+1,Lp)]
+        )||
+        p[listWrap(i+0,Lp)].z!=0
+      ) radiipoints[listWrap(i+0,Lp)] 
+    ],
+    newrp2=processRadiiPoints(radiiPointsWithoutTrippleColinear),
+    plusMinusPointRange=mode==2?1:2,
+    temp=[
+      for(i=[0:len(newrp2)-1]) //for each point in the radii array
+      let(
+        thepoints=[for(j=[-plusMinusPointRange:plusMinusPointRange])newrp2[listWrap(i+j,len(newrp2))]],//collect 5 radii points
+        temp2=mode==2?round3points(thepoints,fn):round5points(thepoints,fn,mode)
+      )
+      mode==1?temp2:newrp2[i][2]==0?
+        [[newrp2[i][0],newrp2[i][1]]]: //return the original point if the radius is 0
+        CentreN2PointsArc(temp2[0],temp2[1],temp2[2],0,fn) //return the arc if everything is normal
+    ]
+  )
+  [for (a = temp) for (b = a) b];//flattern and return the array
+
+function round5points(rp,fn,debug=0)=
+	rp[2][2]==0&&debug==0?[[rp[2][0],rp[2][1]]]://return the middle point if the radius is 0
+	rp[2][2]==0&&debug==1?0://if debug is enabled and the radius is 0 return 0
+	let(
+    p=getpoints(rp), //get list of points
+    r=[for(i=[1:3]) abs(rp[i][2])],//get the centre 3 radii
+    //start by determining what the radius should be at point 3
+    //find angles at points 2 , 3 and 4
+    a2=cosineRuleAngle(p[0],p[1],p[2]),
+    a3=cosineRuleAngle(p[1],p[2],p[3]),
+    a4=cosineRuleAngle(p[2],p[3],p[4]),
+    //find the distance between points 2&3 and between points 3&4
+    d23=pointDist(p[1],p[2]),
+    d34=pointDist(p[2],p[3]),
+    //find the radius factors
+    F23=(d23*tan(a2/2)*tan(a3/2))/(r[0]*tan(a3/2)+r[1]*tan(a2/2)),
+    F34=(d34*tan(a3/2)*tan(a4/2))/(r[1]*tan(a4/2)+r[2]*tan(a3/2)),
+    newR=min(r[1],F23*r[1],F34*r[1]),//use the smallest radius
+    //now that the radius has been determined, find tangent points and circle centre
+    tangD=newR/tan(a3/2),//distance to the tangent point from p3
+      circD=newR/sin(a3/2),//distance to the circle centre from p3
+    //find the angle from the p3
+    an23=getAngle(p[1],p[2]),//angle from point 3 to 2
+    an34=getAngle(p[3],p[2]),//angle from point 3 to 4
+    //find tangent points
+    t23=[p[2][0]-cos(an23)*tangD,p[2][1]-sin(an23)*tangD],//tangent point between points 2&3
+    t34=[p[2][0]-cos(an34)*tangD,p[2][1]-sin(an34)*tangD],//tangent point between points 3&4
+    //find circle centre
+    tmid=getMidpoint(t23,t34),//midpoint between the two tangent points
+    anCen=getAngle(tmid,p[2]),//angle from point 3 to circle centre
+    cen=[p[2][0]-cos(anCen)*circD,p[2][1]-sin(anCen)*circD]
+  )
+    //circle center by offseting from point 3
+    //determine the direction of rotation
+	debug==1?//if debug in disabled return arc (default)
+    (newR-r[1]):
+	[t23,t34,cen];
+
+function round3points(rp,fn)=
+  rp[1][2]==0?[[rp[1][0],rp[1][1]]]://return the middle point if the radius is 0
+	let(
+    p=getpoints(rp), //get list of points
+	  r=rp[1][2],//get the centre 3 radii
+    ang=cosineRuleAngle(p[0],p[1],p[2]),//angle between the lines
+    //now that the radius has been determined, find tangent points and circle centre
+	  tangD=r/tan(ang/2),//distance to the tangent point from p2
+    circD=r/sin(ang/2),//distance to the circle centre from p2
+    //find the angles from the p2 with respect to the postitive x axis
+    angleFromPoint1ToPoint2=getAngle(p[0],p[1]),
+    angleFromPoint2ToPoint3=getAngle(p[2],p[1]),
+    //find tangent points
+    t12=[p[1][0]-cos(angleFromPoint1ToPoint2)*tangD,p[1][1]-sin(angleFromPoint1ToPoint2)*tangD],//tangent point between points 1&2
+    t23=[p[1][0]-cos(angleFromPoint2ToPoint3)*tangD,p[1][1]-sin(angleFromPoint2ToPoint3)*tangD],//tangent point between points 2&3
+    //find circle centre
+    tmid=getMidpoint(t12,t23),//midpoint between the two tangent points
+    angCen=getAngle(tmid,p[1]),//angle from point 2 to circle centre
+    cen=[p[1][0]-cos(angCen)*circD,p[1][1]-sin(angCen)*circD] //circle center by offseting from point 2 
+  )
+	[t12,t23,cen];
+
+function parallelFollow(rp,thick=4,minR=1,mode=1)=
+    //rp[1][2]==0?[rp[1][0],rp[1][1],0]://return the middle point if the radius is 0
+    thick==0?[rp[1][0],rp[1][1],0]://return the middle point if the radius is 0
+	let(
+    p=getpoints(rp), //get list of points
+	  r=thick,//get the centre 3 radii
+    ang=cosineRuleAngle(p[0],p[1],p[2]),//angle between the lines
+    //now that the radius has been determined, find tangent points and circle centre
+    tangD=r/tan(ang/2),//distance to the tangent point from p2
+  	sgn=CWorCCW(rp),//rotation of the three points cw or ccw?let(sgn=mode==0?1:-1)
+    circD=mode*sgn*r/sin(ang/2),//distance to the circle centre from p2
+    //find the angles from the p2 with respect to the postitive x axis
+    angleFromPoint1ToPoint2=getAngle(p[0],p[1]),
+    angleFromPoint2ToPoint3=getAngle(p[2],p[1]),
+    //find tangent points
+    t12=[p[1][0]-cos(angleFromPoint1ToPoint2)*tangD,p[1][1]-sin(angleFromPoint1ToPoint2)*tangD],//tangent point between points 1&2
+	  t23=[p[1][0]-cos(angleFromPoint2ToPoint3)*tangD,p[1][1]-sin(angleFromPoint2ToPoint3)*tangD],//tangent point between points 2&3
+    //find circle centre
+    tmid=getMidpoint(t12,t23),//midpoint between the two tangent points
+    angCen=getAngle(tmid,p[1]),//angle from point 2 to circle centre
+    cen=[p[1][0]-cos(angCen)*circD,p[1][1]-sin(angCen)*circD],//circle center by offseting from point 2 
+    outR=max(minR,rp[1][2]-thick*sgn*mode) //ensures radii are never too small.
+  )
+	concat(cen,outR);
+
+function findPoint(ang1,refpoint1,ang2,refpoint2,r=0)=
+  let(
+    m1=tan(ang1),
+    c1=refpoint1.y-m1*refpoint1.x,
+	  m2=tan(ang2),
+    c2=refpoint2.y-m2*refpoint2.x,
+    outputX=(c2-c1)/(m1-m2),
+    outputY=m1*outputX+c1
+  )
+	[outputX,outputY,r];
+
+function beamChain(radiiPoints,offset1=0,offset2,mode=0,minR=0,startAngle,endAngle)= 
+  /*This function takes a series of radii points and plots points to run along side at a consistant distance, think of it as offset but for line instead of a polygon
+  radiiPoints=radii points,
+  offset1 & offset2= The two offsets that give the beam it's thickness. When using with mode=2 only offset1 is needed as there is no return path for the polygon
+  minR=min radius, if all of your radii are set properly within the radii points this value can be ignored
+  startAngle & endAngle= Angle at each end of the beam, different mode determine if this angle is relative to the ending legs of the beam or absolute.
+  mode=1 - include endpoints startAngle&2 are relative to the angle of the last two points and equal 90deg if not defined
+  mode=2 - Only the forward path is defined, useful for combining the beam with other radii points, see examples for a use-case.
+  mode=3 - include endpoints startAngle&2 are absolute from the x axis and are 0 if not defined
+  negative radiuses only allowed for the first and last radii points
+  
+  As it stands this function could probably be tidied a lot, but it works, I'll tidy later*/
+  let(
+    offset2undef=offset2==undef?1:0,
+    offset2=offset2undef==1?0:offset2,
+    CWorCCW1=sign(offset1)*CWorCCW(radiiPoints),
+    CWorCCW2=sign(offset2)*CWorCCW(radiiPoints),
+    offset1=abs(offset1),
+    offset2b=abs(offset2),
+    Lrp3=len(radiiPoints)-3,
+    Lrp=len(radiiPoints),
+    startAngle=mode==0&&startAngle==undef?
+      getAngle(radiiPoints[0],radiiPoints[1])+90:
+      mode==2&&startAngle==undef?
+      0:
+      mode==0?
+      getAngle(radiiPoints[0],radiiPoints[1])+startAngle:
+      startAngle,
+    endAngle=mode==0&&endAngle==undef?
+            getAngle(radiiPoints[Lrp-1],radiiPoints[Lrp-2])+90:
+        mode==2&&endAngle==undef?
+            0:
+        mode==0?
+            getAngle(radiiPoints[Lrp-1],radiiPoints[Lrp-2])+endAngle:
+            endAngle,
+    OffLn1=[for(i=[0:Lrp3]) offset1==0?radiiPoints[i+1]:parallelFollow([radiiPoints[i],radiiPoints[i+1],radiiPoints[i+2]],offset1,minR,mode=CWorCCW1)],
+    OffLn2=[for(i=[0:Lrp3]) offset2==0?radiiPoints[i+1]:parallelFollow([radiiPoints[i],radiiPoints[i+1],radiiPoints[i+2]],offset2b,minR,mode=CWorCCW2)],  
+    Rp1=abs(radiiPoints[0].z),
+    Rp2=abs(radiiPoints[Lrp-1].z),
+    endP1a=findPoint(getAngle(radiiPoints[0],radiiPoints[1]),         OffLn1[0],              startAngle,radiiPoints[0],     Rp1),
+    endP1b=findPoint(getAngle(radiiPoints[Lrp-1],radiiPoints[Lrp-2]), OffLn1[len(OffLn1)-1],  endAngle,radiiPoints[Lrp-1], Rp2),
+    endP2a=findPoint(getAngle(radiiPoints[0],radiiPoints[1]),         OffLn2[0],              startAngle,radiiPoints[0],     Rp1),
+    endP2b=findPoint(getAngle(radiiPoints[Lrp-1],radiiPoints[Lrp-2]), OffLn2[len(OffLn1)-1],  endAngle,radiiPoints[Lrp-1], Rp2),
+    absEnda=getAngle(endP1a,endP2a),
+    absEndb=getAngle(endP1b,endP2b),
+    negRP1a=[cos(absEnda)*radiiPoints[0].z*10+endP1a.x,        sin(absEnda)*radiiPoints[0].z*10+endP1a.y,       0.0],
+    negRP2a=[cos(absEnda)*-radiiPoints[0].z*10+endP2a.x,       sin(absEnda)*-radiiPoints[0].z*10+endP2a.y,      0.0],
+    negRP1b=[cos(absEndb)*radiiPoints[Lrp-1].z*10+endP1b.x,    sin(absEndb)*radiiPoints[Lrp-1].z*10+endP1b.y,   0.0],
+    negRP2b=[cos(absEndb)*-radiiPoints[Lrp-1].z*10+endP2b.x,   sin(absEndb)*-radiiPoints[Lrp-1].z*10+endP2b.y,  0.0],
+    OffLn1b=(mode==0||mode==2)&&radiiPoints[0].z<0&&radiiPoints[Lrp-1].z<0?
+        concat([negRP1a],[endP1a],OffLn1,[endP1b],[negRP1b])
+      :(mode==0||mode==2)&&radiiPoints[0].z<0?
+        concat([negRP1a],[endP1a],OffLn1,[endP1b])
+      :(mode==0||mode==2)&&radiiPoints[Lrp-1].z<0?
+        concat([endP1a],OffLn1,[endP1b],[negRP1b])
+      :mode==0||mode==2?
+        concat([endP1a],OffLn1,[endP1b])
+      :
+        OffLn1,
+    OffLn2b=(mode==0||mode==2)&&radiiPoints[0].z<0&&radiiPoints[Lrp-1].z<0?
+        concat([negRP2a],[endP2a],OffLn2,[endP2b],[negRP2b])
+      :(mode==0||mode==2)&&radiiPoints[0].z<0?
+        concat([negRP2a],[endP2a],OffLn2,[endP2b])
+      :(mode==0||mode==2)&&radiiPoints[Lrp-1].z<0?
+        concat([endP2a],OffLn2,[endP2b],[negRP2b])
+      :mode==0||mode==2?
+        concat([endP2a],OffLn2,[endP2b])
+      :
+        OffLn2
+    )//end of let()
+  offset2undef==1?OffLn1b:concat(OffLn2b,revList(OffLn1b));
+    
+function revList(list)=//reverse list
+  let(Llist=len(list)-1)
+  [for(i=[0:Llist]) list[Llist-i]];
+
+function CWorCCW(p)=
+	let(
+    Lp=len(p),
+	  e=[for(i=[0:Lp-1]) 
+      (p[listWrap(i+0,Lp)].x-p[listWrap(i+1,Lp)].x)*(p[listWrap(i+0,Lp)].y+p[listWrap(i+1,Lp)].y)
+    ]
+  )  
+  sign(sum(e));
+
+function CentreN2PointsArc(p1,p2,cen,mode=0,fn)=
+  /* This function plots an arc from p1 to p2 with fn increments using the cen as the centre of the arc.
+  the mode determines how the arc is plotted
+  mode==0, shortest arc possible 
+  mode==1, longest arc possible
+  mode==2, plotted clockwise
+  mode==3, plotted counter clockwise
+  */
+	let(
+    isCWorCCW=CWorCCW([cen,p1,p2]),//determine the direction of rotation
+    //determine the arc angle depending on the mode
+    p1p2Angle=cosineRuleAngle(p2,cen,p1),
+    arcAngle=
+      mode==0?p1p2Angle:
+      mode==1?p1p2Angle-360:
+      mode==2&&isCWorCCW==-1?p1p2Angle:
+      mode==2&&isCWorCCW== 1?p1p2Angle-360:
+      mode==3&&isCWorCCW== 1?p1p2Angle:
+      mode==3&&isCWorCCW==-1?p1p2Angle-360:
+      cosineRuleAngle(p2,cen,p1),
+    r=pointDist(p1,cen),//determine the radius
+	  p1Angle=getAngle(cen,p1) //angle of line 1
+  )
+  [for(i=[0:fn])
+  let(angleIncrement=(arcAngle/fn)*i*isCWorCCW)
+  [cos(p1Angle+angleIncrement)*r+cen.x,sin(p1Angle+angleIncrement)*r+cen.y]];
+
+function translateRadiiPoints(radiiPoints,tran=[0,0],rot=0)=
+	[for(i=radiiPoints) 
+		let(
+      a=getAngle([0,0],[i.x,i.y]),//get the angle of the this point
+		  h=pointDist([0,0],[i.x,i.y]) //get the hypotenuse/radius
+    )
+		[h*cos(a+rot)+tran.x,h*sin(a+rot)+tran.y,i.z]//calculate the point's new position
+	];
+
+module round2d(OR=3,IR=1){
+  offset(OR,$fn=100){
+    offset(-IR-OR,$fn=100){
+      offset(IR,$fn=100){
+        children();
+      }
+    }
+  }
+}
+
+module shell2d(offset1,offset2=0,minOR=0,minIR=0){
+	difference(){
+		round2d(minOR,minIR){
+      offset(max(offset1,offset2)){
+        children(0);//original 1st child forms the outside of the shell
+      }
+    }
+		round2d(minIR,minOR){
+      difference(){//round the inside cutout
+        offset(min(offset1,offset2)){
+          children(0);//shrink the 1st child to form the inside of the shell 
+        }
+        if($children>1){
+          for(i=[1:$children-1]){
+            children(i);//second child and onwards is used to add material to inside of the shell
+          }
+        }
+      }
+		}
+	}
+}
+
+module internalSq(size,r,center=0){
+    tran=center==1?[0,0]:size/2;
+    translate(tran){
+      square(size,true);
+      offs=sin(45)*r;
+      for(i=[-1,1],j=[-1,1]){
+        translate([(size.x/2-offs)*i,(size.y/2-offs)*j])circle(r);
+      }
+    }
+}
+
+module extrudeWithRadius(length,r1=0,r2=0,fn=30){
+  n1=sign(r1);n2=sign(r2);
+  r1=abs(r1);r2=abs(r2);
+  translate([0,0,r1]){
+    linear_extrude(length-r1-r2){
+      children();
+    }
+  }
+  for(i=[0:fn-1]){
+    translate([0,0,i/fn*r1]){
+      linear_extrude(r1/fn+0.01){
+        offset(n1*sqrt(sq(r1)-sq(r1-i/fn*r1))-n1*r1){
+          children();
+        }
+      }
+    }
+    translate([0,0,length-r2+i/fn*r2]){
+      linear_extrude(r2/fn+0.01){
+        offset(n2*sqrt(sq(r2)-sq(i/fn*r2))-n2*r2){
+          children();
+        }
+      }
+    }
+  }
+}
+
+function mirrorPoints(radiiPoints,rot=0,endAttenuation=[0,0])= //mirrors a list of points about Y, ignoring the first and last points and returning them in reverse order for use with polygon or polyRound
+  let(
+    a=translateRadiiPoints(radiiPoints,[0,0],-rot),
+    temp3=[for(i=[0+endAttenuation[0]:len(a)-1-endAttenuation[1]])
+      [a[i][0],-a[i][1],a[i][2]]
+    ],
+    temp=translateRadiiPoints(temp3,[0,0],rot),
+    temp2=revList(temp3)
+  )    
+  concat(radiiPoints,temp2);
+
+function processRadiiPoints(rp)=
+  [for(i=[0:len(rp)-1])
+    processRadiiPoints2(rp,i)
+  ];
+
+function processRadiiPoints2(list,end=0,idx=0,result=0)=
+  idx>=end+1?result:
+  processRadiiPoints2(list,end,idx+1,relationalRadiiPoints(result,list[idx]));
+
+function cosineRuleBside(a,c,C)=c*cos(C)-sqrt(sq(a)+sq(c)+sq(cos(C))-sq(c));
+
+function absArelR(po,pn)=
+  let(
+    th2=atan(po[1]/po[0]),
+    r2=sqrt(sq(po[0])+sq(po[1])),
+    r3=cosineRuleBside(r2,pn[1],th2-pn[0])
+  )
+  [cos(pn[0])*r3,sin(pn[0])*r3,pn[2]];
+
+function relationalRadiiPoints(po,pi)=
+  let(
+    p0=pi[0],
+    p1=pi[1],
+    p2=pi[2],
+    pv0=pi[3][0],
+    pv1=pi[3][1],
+    pt0=pi[3][2],
+    pt1=pi[3][3],
+    pn=
+      (pv0=="y"&&pv1=="x")||(pv0=="r"&&pv1=="a")||(pv0=="y"&&pv1=="a")||(pv0=="x"&&pv1=="a")||(pv0=="y"&&pv1=="r")||(pv0=="x"&&pv1=="r")?
+        [p1,p0,p2,concat(pv1,pv0,pt1,pt0)]:
+        [p0,p1,p2,concat(pv0,pv1,pt0,pt1)],
+    n0=pn[0],
+    n1=pn[1],
+    n2=pn[2],
+    nv0=pn[3][0],
+    nv1=pn[3][1],
+    nt0=pn[3][2],
+    nt1=pn[3][3],
+    temp=
+      pn[0]=="l"?
+        [po[0],pn[1],pn[2]]
+      :pn[1]=="l"?
+        [pn[0],po[1],pn[2]]
+      :nv0==undef?
+        [pn[0],pn[1],pn[2]]//abs x, abs y as default when undefined
+      :nv0=="a"?
+        nv1=="r"?
+          nt0=="a"?
+            nt1=="a"||nt1==undef?
+              [cos(n0)*n1,sin(n0)*n1,n2]//abs angle, abs radius
+            :absArelR(po,pn)//abs angle rel radius
+          :nt1=="r"||nt1==undef?
+            [po[0]+cos(pn[0])*pn[1],po[1]+sin(pn[0])*pn[1],pn[2]]//rel angle, rel radius 
+          :[pn[0],pn[1],pn[2]]//rel angle, abs radius
+        :nv1=="x"?
+          nt0=="a"?
+            nt1=="a"||nt1==undef?
+              [pn[1],pn[1]*tan(pn[0]),pn[2]]//abs angle, abs x
+            :[po[0]+pn[1],(po[0]+pn[1])*tan(pn[0]),pn[2]]//abs angle rel x
+            :nt1=="r"||nt1==undef?
+              [po[0]+pn[1],po[1]+pn[1]*tan(pn[0]),pn[2]]//rel angle, rel x 
+            :[pn[1],po[1]+(pn[1]-po[0])*tan(pn[0]),pn[2]]//rel angle, abs x
+          :nt0=="a"?
+            nt1=="a"||nt1==undef?
+              [pn[1]/tan(pn[0]),pn[1],pn[2]]//abs angle, abs y
+            :[(po[1]+pn[1])/tan(pn[0]),po[1]+pn[1],pn[2]]//abs angle rel y
+          :nt1=="r"||nt1==undef?
+            [po[0]+(pn[1]-po[0])/tan(90-pn[0]),po[1]+pn[1],pn[2]]//rel angle, rel y 
+          :[po[0]+(pn[1]-po[1])/tan(pn[0]),pn[1],pn[2]]//rel angle, abs y
+      :nv0=="r"?
+        nv1=="x"?
+          nt0=="a"?
+            nt1=="a"||nt1==undef?
+              [pn[1],sign(pn[0])*sqrt(sq(pn[0])-sq(pn[1])),pn[2]]//abs radius, abs x
+            :[po[0]+pn[1],sign(pn[0])*sqrt(sq(pn[0])-sq(po[0]+pn[1])),pn[2]]//abs radius rel x
+          :nt1=="r"||nt1==undef?
+            [po[0]+pn[1],po[1]+sign(pn[0])*sqrt(sq(pn[0])-sq(pn[1])),pn[2]]//rel radius, rel x 
+          :[pn[1],po[1]+sign(pn[0])*sqrt(sq(pn[0])-sq(pn[1]-po[0])),pn[2]]//rel radius, abs x
+        :nt0=="a"?
+          nt1=="a"||nt1==undef?
+            [sign(pn[0])*sqrt(sq(pn[0])-sq(pn[1])),pn[1],pn[2]]//abs radius, abs y
+          :[sign(pn[0])*sqrt(sq(pn[0])-sq(po[1]+pn[1])),po[1]+pn[1],pn[2]]//abs radius rel y
+        :nt1=="r"||nt1==undef?
+          [po[0]+sign(pn[0])*sqrt(sq(pn[0])-sq(pn[1])),po[1]+pn[1],pn[2]]//rel radius, rel y 
+        :[po[0]+sign(pn[0])*sqrt(sq(pn[0])-sq(pn[1]-po[1])),pn[1],pn[2]]//rel radius, abs y
+      :nt0=="a"?
+        nt1=="a"||nt1==undef?
+          [pn[0],pn[1],pn[2]]//abs x, abs y
+        :[pn[0],po[1]+pn[1],pn[2]]//abs x rel y
+      :nt1=="r"||nt1==undef?
+        [po[0]+pn[0],po[1]+pn[1],pn[2]]//rel x, rel y 
+      :[po[0]+pn[0],pn[1],pn[2]]//rel x, abs y
+  )
+  temp;
+
+function invtan(run,rise)=
+  let(a=abs(atan(rise/run)))
+  rise==0&&run>0?
+    0:rise>0&&run>0?
+    a:rise>0&&run==0?
+    90:rise>0&&run<0?
+    180-a:rise==0&&run<0?
+    180:rise<0&&run<0?
+    a+180:rise<0&&run==0?
+    270:rise<0&&run>0?
+    360-a:"error";
+
+function cosineRuleAngle(p1,p2,p3)=
+  let(
+    p12=abs(pointDist(p1,p2)),
+    p13=abs(pointDist(p1,p3)),
+    p23=abs(pointDist(p2,p3))
+  )
+  acos((sq(p23)+sq(p12)-sq(p13))/(2*p23*p12));
+
+function sum(list, idx = 0, result = 0) = 
+	idx >= len(list) ? result : sum(list, idx + 1, result + list[idx]);
+
+function sq(x)=x*x;
+function getGradient(p1,p2)=(p2.y-p1.y)/(p2.x-p1.x);
+function getAngle(p1,p2)=p1==p2?0:invtan(p2[0]-p1[0],p2[1]-p1[1]);
+function getMidpoint(p1,p2)=[(p1[0]+p2[0])/2,(p1[1]+p2[1])/2]; //returns the midpoint of two points
+function pointDist(p1,p2)=sqrt(abs(sq(p1[0]-p2[0])+sq(p1[1]-p2[1]))); //returns the distance between two points
+function isColinear(p1,p2,p3)=getGradient(p1,p2)==getGradient(p2,p3)?1:0;//return 1 if 3 points are colinear
+module polyline(p, width=0.3) {
+  for(i=[0:max(0,len(p)-1)]){
+    color([i*1/len(p),1-i*1/len(p),0,0.5])line(p[i],p[listWrap(i+1,len(p) )],width);
+  }
+} // polyline plotter
+module line(p1, p2 ,width=0.3) { // single line plotter
+  hull() {
+    translate(p1){
+      circle(width);
+    }
+    translate(p2){
+      circle(width);
+    }
+  }
+}
+
+function getpoints(p)=[for(i=[0:len(p)-1])[p[i].x,p[i].y]];// gets [x,y]list of[x,y,r]list
+function listWrap(x,x_max=1,x_min=0) = (((x - x_min) % (x_max - x_min)) + (x_max - x_min)) % (x_max - x_min) + x_min; // wraps numbers inside boundaries
+function rnd(a = 1, b = 0, s = []) = 
+  s == [] ? 
+    (rands(min(a, b), max(   a, b), 1)[0]):(rands(min(a, b), max(a, b), 1, s)[0]); // nice rands wrapper 

src/libraries/skin.scad

@@ -72,66 +72,3 @@ function profile_segment_length(profile,i) = norm(profile[(i+1)%len(profile)] -
 
 // Generates an array with n copies of value (default 0)
 function dup(value=0,n) = [for (i = [1:n]) value];
-
-
-
-
-
-
-
-use <scad-utils/transformations.scad>
-use <scad-utils/trajectory_path.scad>
-use <scad-utils/trajectory.scad>
-use <scad-utils/shapes.scad>
-
-module fakeISOEnter(thickness_difference = 0){
-    // 1u is the space taken upy by a 1u keycap.
-    // unit is the space taken up by a unit space for a keycap.
-    // formula is 1u + unit *(length - 1)
-
-    // t is all modifications to the polygon array
-    t = thickness_difference/2 - (19.02 - 18.16);
-
-    function unit(length) = 19.02 * length;
-
-    pointArray = [
-        [19.05 * (-.5)  + t,      19.05 * (-1)  + t],
-        [19.05 * (0.5)  - t,      19.05 * (-1)  + t],
-        [19.05 * (0.5)  - t,      19.05 * (1)  - t],
-        [19.05 * (-0.75) + t,      19.05 * (1)  - t],
-        [19.05 * (-0.75) + t,      19.05 * (0)  + t],
-        [19.05 * (-0.5) + t,      19.05 * (0)  + t]
-    ];
-
-
-  /*translate([unit(-.5), unit(-1) + 0.86]){*/
-    minkowski() {
-            circle($corner_radius, $fn=20);
-            offset(r=-$corner_radius * 2, $fn=20) polygon(points=pointArray);
-          }
-  /*}*/
-}
-
-function isoEnter() = [
-        [19.05 * (-.5)  + (19.02 - 18.16),      19.05 * (-1)  + (19.02 - 18.16)],
-        [19.05 * (0.5)  - (19.02 - 18.16),      19.05 * (-1)  + (19.02 - 18.16)],
-        [19.05 * (0.5)  - (19.02 - 18.16),      19.05 * (1)  - (19.02 - 18.16)],
-        [19.05 * (-0.75) + (19.02 - 18.16),      19.05 * (1)  - (19.02 - 18.16)],
-        [19.05 * (-0.75) + (19.02 - 18.16),      19.05 * (0)  + (19.02 - 18.16)],
-        [19.05 * (-0.5) + (19.02 - 18.16),      19.05 * (0)  + (19.02 - 18.16)]
-    ];
-
-
-path_definition = [
-trajectory(forward = 10, roll  =  0),
-];
-
-// sweep
-path = quantize_trajectories(path_definition, steps=100);
-
-// skin
-myLen = len(path)-1;
-trans = [ for (i=[0:len(path)-1]) transform(path[i], isoEnter()) ];
-
-translate([0,10,0])
-  skin(trans);

src/settings.scad

@@ -7,7 +7,10 @@ $key_length = 1.0; // Range not working in thingiverse customizer atm [1:0.25:16
 $stem_type = "cherry";  // [cherry, alps, rounded_cherry, box_cherry, filled, disable]
 
 // The stem is the hardest part to print, so this variable controls how much 'slop' there is in the stem
-$stem_slop = 0.3; // Not working in thingiverse customizer atm [0:0.01:1]
+// if your keycaps stick in the switch raise this value
+$stem_slop = 0.35; // Not working in thingiverse customizer atm [0:0.01:1]
+// broke this out. if your keycaps are falling off lower this value. only works for cherry stems rn
+$stem_inner_slop = 0.2;
 
 // Font size used for text
 $font_size = 6;
@@ -15,6 +18,10 @@ $font_size = 6;
 // Set this to true if you're making a spacebar!
 $inverted_dish = false;
 
+// change aggressiveness of double sculpting
+// this is the radius of the cylinder the keytops are placed on
+$double_sculpt_radius = 200;
+
 
 // Support type. default is "flared" for easy FDM printing; bars are more realistic, and flat could be for artisans
 $support_type = "flared"; // [flared, bars, flat, disable]
@@ -22,9 +29,11 @@ $support_type = "flared"; // [flared, bars, flat, disable]
 // Supports for the stem, as it often comes off during printing. Reccommended for most machines
 $stem_support_type = "tines"; // [tines, brim, disabled]
 
-/* [Advanced] */
+// make legends outset instead of inset.
+// broken off from artisan support since who wants outset legends?
+$outset_legends = false;
 
-/* Key */
+/* [Key] */
 // Height in units of key. should remain 1 for most uses
 $key_height = 1.0;
 // Keytop thickness, aka how many millimeters between the inside and outside of the top surface of the key
@@ -45,10 +54,17 @@ $height_difference = 4;
 $total_depth = 11.5;
 // The tilt of the dish in degrees. divided by key height
 $top_tilt = -6;
+// the y tilt of the dish in degrees. divided by key width.
+// for double axis sculpted keycaps and probably not much else
+$top_tilt_y = 0;
 // How skewed towards the back the top is (0 for center)
 $top_skew = 1.7;
 
-/* Stem */
+// how skewed towards the right the top is. unused, but implemented.
+// for double axis sculpted keycaps and probably not much else
+$top_skew_x = 0;
+
+/* [Stem] */
 
 // How far the throw distance of the switch is. determines how far the 'cross' in the cherry switch digs into the stem, and how long the keystem needs to be before supports can start. luckily, alps and cherries have a pretty similar throw. can modify to have stouter keycaps for low profile switches, etc
 $stem_throw = 4;
@@ -58,21 +74,24 @@ $rounded_cherry_stem_d = 5.5;
 
 // How much higher the stem is than the bottom of the keycap.
 // Inset stem requires support but is more accurate in some profiles
+// can be negative to make outset stems!
 $stem_inset = 0;
-// How many degrees to rotate the stems. useful for sideways keycaps, maybe
+// How many degrees to rotate the stems. useful for sideways keycaps
 $stem_rotation = 0;
+// How many degrees to rotate the keycap, but _not_ inside features (the stem). 
+$keycap_rotation = 0;
 
-/* Shape */
+/* [Shape] */
 
 // Key shape type, determines the shape of the key. default is 'rounded square'
 $key_shape_type = "rounded_square";
-// ISO enter needs to be linear extruded NOT from the center. this tells the program how far up 'not from the center' is
+// ISO enter needs to be linear extruded NOT from the center when not using skin. this tells the program how far up 'not from the center' is
 $linear_extrude_height_adjustment = 0;
 // How many slices will be made, to approximate curves on corners. Leave at 1 if you are not curving corners
 // If you're doing fancy bowed keycap sides, this controls how many slices you take
 $height_slices = 1;
 
-/* Dish */
+/* [Dish] */
 
 // What type of dish the key has. note that unlike stems and supports a dish ALWAYS gets rendered.
 $dish_type = "cylindrical"; // [cylindrical, spherical, sideways cylindrical, old spherical, disable]
@@ -82,12 +101,16 @@ $dish_depth = 1;
 $dish_skew_x = 0;
 // How skewed in the y direction (height) the dish is
 $dish_skew_y = 0;
-// If you need the dish to extend further, you can 'overdraw' the rectangle it will hit
+
+
+$dish_offset_x = 0;
+
+// If you need the dish to extend further, you can 'overdraw' the rectangle it will hit. this was mostly for iso enter and should be deprecated
 $dish_overdraw_width = 0;
 // Same as width but for height
 $dish_overdraw_height = 0;
 
-/* Misc */
+/* [Misc] */
 // There's a bevel on the cherry stems to aid insertion / guard against first layer squishing making a hard-to-fit stem.
 $cherry_bevel = true;
 
@@ -97,15 +120,17 @@ $stem_support_height = .8;
 $font="DejaVu Sans Mono:style=Book";
 // Whether or not to render fake keyswitches to check clearances
 $clearance_check = false;
-// Use linear_extrude instead of hull slices to make the shape of the key
 // Should be faster, also required for concave shapes
-$linear_extrude_shape = false;
-//should the key be rounded? unnecessary for most printers, and very slow
+
+// what kind of extrusion we use to create the keycap. "hull" is standard, "linear extrude" is legacy, "skin" is new and not well supported.
+$hull_shape_type = "hull"; // ["hull", "linear extrude", "skin"]
+
+// This doesn't work very well, but you can try
 $rounded_key = false;
 //minkowski radius. radius of sphere used in minkowski sum for minkowski_key function. 1.75 for G20
 $minkowski_radius = .33;
 
-/* Features */
+/* [Features] */
 
 //insert locating bump
 $key_bump = false;
@@ -116,12 +141,27 @@ $key_bump_edge = 0.4;
 
 /* [Hidden] */
 
+// set this to true if you are making double sculpted keycaps
+$double_sculpted = false;
+
 //list of legends to place on a key format: [text, halign, valign, size]
 //halign = "left" or "center" or "right"
 //valign = "top" or "center" or "bottom"
 // Currently does not work with thingiverse customizer, and actually breaks it
 $legends = [];
 
+//list of front legends to place on a key format: [text, halign, valign, size]
+//halign = "left" or "center" or "right"
+//valign = "top" or "center" or "bottom"
+// Currently does not work with thingiverse customizer, and actually breaks it
+$front_legends = [];
+
+// print legends on the front of the key instead of the top
+$front_print_legends = false;
+
+// how recessed inset legends / artisans are from the top of the key
+$inset_legend_depth = 0.2;
+
 // Dimensions of alps stem
 $alps_stem = [4.45, 2.25];
 
@@ -140,3 +180,72 @@ $stabilizers = $key_length >= 6 ? [[-50, 0], [50, 0]] : $key_length >= 2 ? [[-12
 // Where the stems are in relation to the center of the keycap, in units. default is one in the center
 // Shouldn't work in thingiverse customizer, though it has been...
 $stem_positions = [[0,0]];
+
+// colors
+$primary_color = [.2667,.5882,1];
+$secondary_color = [.4412, .7, .3784];
+$tertiary_color = [1, .6941, .2];
+$quaternary_color = [.4078, .3569, .749];
+$warning_color = [1,0,0, 0.15];
+
+// how many facets circles will have when used in these features
+$minkowski_facets = 30;
+$shape_facets =30;
+
+
+
+// "flat" / "dished" / "disable"
+$inner_shape_type = "flat";
+
+// default side_sculpting function, linear
+$side_sculpting = function(progress) 0;
+$corner_sculpting = function(progress) 0;
+
+// you probably shouldn't touch this, it's internal to sculpted_square
+// modify side sculpting with the $side_sculpting function in the key profile files
+$more_side_sculpting_factor = 0;
+
+// 3d surface functions (still in beta)
+
+// 3d surface settings
+// unused for now
+$3d_surface_size = 1;
+// 3d surface point resolution. $3d_surface_size / $3d_surface_step = steps per x / y
+$3d_surface_step = 1/20;
+
+// monotonically increasing function that distributes the points of the surface mesh
+// only for polar_3d_surface right now
+// if it's linear it's a grid. sin(dim) * size concentrates detail around the edges
+sinusoidal_surface_distribution = function(dim,size) sin(dim) * size;
+linear_surface_distribution = function(dim,size) dim;
+
+$surface_distribution_function = sinusoidal_surface_distribution;
+
+// the function that actually determines what the surface is.
+// feel free to override, the last one wins
+
+// debug
+// $surface_function = function(x,y) 1;
+cylindrical_surface = function(x,y) (sin(acos(x/$3d_surface_size)));
+spherical_surface = function(x,y) (1 - (x/$3d_surface_size)^2)^0.5 * (1 - (y/$3d_surface_size)^2)^0.5;
+// looks a lot like mt3
+quartic_surface = function(x,y) (1 - (x/$3d_surface_size)^4)^0.5 * (1 - (y/$3d_surface_size)^4)^0.5;
+ripple_surface = function(x,y) cos((x^2+y^2)^0.5 * 50)/4 + 0.75; 
+rosenbrocks_banana_surface = function(x,y) (pow(1-(x/$3d_surface_size))^2 + 100 * pow((y/$3d_surface_size)-(x/$3d_surface_size)^2)^2)/200 + 0.1;
+spike_surface = function(x,y) 1/(((x/$3d_surface_size)^2+(y/$3d_surface_size)^2)^0.5) + .01;
+random_surface = function(x,y) sin(rands(0,90,1,x+y)[0]);
+bumps_surface = function(x,y) sin(20*x)*cos(20*y)/3+1;
+
+$surface_function = bumps_surface; // bumps_surface;
+
+// can be used to smooth the corners of the 3d surface function, to make the dishes add / subtract less height. can really do anything it's just multiplying, but that's what I use it for
+$corner_smoothing_surface_function = function(x,y) 1;
+// $corner_smoothing_surface_function = function(x,y) (1 - pow(abs(x), 5)/$3d_surface_size) * (1 - pow(abs(y),5)/$3d_surface_size);
+
+// ripples
+/* 
+// Rosenbrock's banana
+/* $
+// y=x revolved around the y axis
+/* $surface_function =  */
+/* $surface_function =  */

src/shapes.scad

@@ -1,12 +1,15 @@
-$fs=.1;
-unit = 19.05;
-
+include <constants.scad>
 include <shapes/ISO_enter.scad>
 include <shapes/sculpted_square.scad>
 include <shapes/rounded_square.scad>
 include <shapes/square.scad>
 include <shapes/oblong.scad>
+include <shapes/regular_polygon.scad>
 
+// size: at progress 0, the shape is supposed to be this size
+// delta: at progress 1, the keycap is supposed to be size - delta
+// progress: how far along the transition you are.
+// it's not always linear - specifically sculpted_square
 module key_shape(size, delta, progress = 0) {
   if ($key_shape_type == "iso_enter") {
     ISO_enter_shape(size, delta, progress);
@@ -14,11 +17,31 @@ module key_shape(size, delta, progress = 0) {
     sculpted_square_shape(size, delta, progress);
   } else if ($key_shape_type == "rounded_square") {
     rounded_square_shape(size, delta, progress);
+  } else if ($key_shape_type == "flat_sided_square") {
+    // rounded_square_shape handles this
+    rounded_square_shape(size, delta, progress);
   } else if ($key_shape_type == "square") {
     square_shape(size, delta, progress);
   } else if ($key_shape_type == "oblong") {
     oblong_shape(size, delta, progress);
+  } else if ($key_shape_type == "hexagon") {
+    regular_polygon_shape(size, delta, progress);
+  } else if ($key_shape_type == "octagon") {
+    regular_polygon_shape(size, delta, progress, sides=8);
+  } else if ($key_shape_type == "circular") {
+    regular_polygon_shape(size, delta, progress, sides=36);
   } else {
     echo("Warning: unsupported $key_shape_type");
   }
 }
+
+function skin_key_shape(size, delta, progress = 0, thickness_difference) =
+  $key_shape_type == "rounded_square" ?
+    skin_rounded_square(size, delta, progress, thickness_difference) :
+    $key_shape_type == "sculpted_square" ?
+      skin_sculpted_square_shape(size, delta, progress, thickness_difference) :
+    $key_shape_type == "square" ?
+      skin_square_shape(size, delta, progress, thickness_difference) :
+    $key_shape_type == "iso_enter" ?
+      skin_iso_enter_shape(size, delta, progress, thickness_difference) :
+      echo("Warning: unsupported $key_shape_type for skin shape. disable skin_extrude_shape or pick a new shape");

src/shapes/ISO_enter.scad

@@ -1,9 +1,14 @@
-// corollary is rounded_square
-// NOT 3D
+include <../functions.scad>
+include <../libraries/round-anything/polyround.scad>
+
+width_ratio = unit_length(1.25) / unit_length(1.5);
+height_ratio = unit_length(1) / unit_length(2);
+
+
+
 module ISO_enter_shape(size, delta, progress){
   width = size[0];
   height = size[1];
-  function unit_length(length) = unit * (length - 1) + 18.16;
 
 
   // in order to make the ISO keycap shape generic, we are going to express the
@@ -12,23 +17,53 @@ module ISO_enter_shape(size, delta, progress){
   // and wants to pass just width and height, we make these ratios to know where
   // to put the elbow joint
 
-  width_ratio = unit_length(1.25) / unit_length(1.5);
-  height_ratio = unit_length(1) / unit_length(2);
+  delta = delta / 2;
 
   pointArray = [
-      [                   0,                     0], // top right
-      [                   0,               -height], // bottom right
-      [-width * width_ratio,               -height], // bottom left
-      [-width * width_ratio,-height * height_ratio], // inner middle point
-      [              -width,-height * height_ratio], // outer middle point
-      [              -width,                     0]  // top left
+      [                   0-delta.x,                     0-delta.y], // top right
+      [                   0-delta.x,               -height+delta.y], // bottom right
+      [-width * width_ratio+delta.x,               -height+delta.y], // bottom left
+      [-width * width_ratio + delta.x,-height * height_ratio+delta.y], // inner middle point
+      [              -width + delta.x,-height * height_ratio + delta.y], // outer middle point
+      [              -width + delta.x,                     0-delta.y]  // top left
   ];
 
   minkowski(){
-    circle(r=corner_size);
+    circle(r=$corner_radius);
     // gives us rounded inner corner
-    offset(r=-corner_size*2) {
+    offset(r=-$corner_radius*2) {
       translate([(width * width_ratio)/2, height/2]) polygon(points=pointArray);
     }
   }
 }
+
+function iso_enter_vertices(size, delta, progress, thickness_difference) = [
+  [                       0-delta.x/2 * progress - thickness_difference/8,                      0 - delta.y / 2 * progress - thickness_difference/8], // top right
+  [                       0-delta.x/2 * progress - thickness_difference/8,               -size[1] + delta.y / 2 * progress + thickness_difference/8], // bottom right
+  [-size[0] * width_ratio + delta.x/2 * progress + thickness_difference/8,               -size[1] + delta.y / 2 * progress + thickness_difference/8], // bottom left
+  [-size[0] * width_ratio + delta.x/2 * progress + thickness_difference/8,-size[1] * height_ratio + delta.y / 2 * progress + thickness_difference/2], // inner middle point
+  [              -size[0] + delta.x/2 * progress + thickness_difference/8,-size[1] * height_ratio + delta.y / 2 * progress + thickness_difference/2], // outer middle point
+  [              -size[0] + delta.x/2 * progress + thickness_difference/8,                      0 - delta.y / 2 * progress - thickness_difference/8]  // top left
+] + [
+  [(size[0] * width_ratio)/2, size[1]/2 ],
+  [(size[0] * width_ratio)/2, size[1]/2 ],
+  [(size[0] * width_ratio)/2, size[1]/2 ],
+  [(size[0] * width_ratio)/2, size[1]/2 ],
+  [(size[0] * width_ratio)/2, size[1]/2 ],
+  [(size[0] * width_ratio)/2, size[1]/2 ]
+];
+
+// no rounding on the corners at all
+function skin_iso_enter_shape(size, delta, progress, thickness_difference) =
+  polyRound(
+    add_rounding(
+      iso_enter_vertices(
+        size,
+        [delta.x - $side_sculpting(progress), delta.y - $side_sculpting(progress)],
+        progress,
+        thickness_difference
+      ),
+      $corner_radius + $corner_sculpting(progress)
+    ),
+    $shape_facets
+  );

src/shapes/regular_polygon.scad

@@ -0,0 +1,14 @@
+// we do this weird key_shape_type check here because rounded_square uses
+// square_shape, and we want flat sides to work for that too.
+// could be refactored, idk
+module regular_polygon_shape(size, delta, progress, sides=6){
+  // https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/undersized_circular_objects
+  fudge = 1/cos(180/sides);
+  diameter = (size.x - delta.x * progress - $corner_radius*2) * fudge;
+  offset(r=$corner_radius) rotate([0,0,360/sides/2]) circle(d = diameter, $fn=sides);
+}
+
+
+
+// TODO not implemented
+function skin_regular_polygon_shape(size, delta, progress, thickness_difference, sides=6) = echo("skin regular polygon not implemented");

src/shapes/rounded_square.scad

@@ -1,22 +1,12 @@
+include <square.scad>
+include <../libraries/round-anything/polyround.scad>
+
 module rounded_square_shape(size, delta, progress, center = true) {
-    width = size[0];
-    height = size[1];
-
-    width_difference = delta[0];
-    height_difference = delta[1];
-
-    // computed values for this slice
-    extra_width_this_slice = (width_difference) * progress;
-    extra_height_this_slice = (height_difference) * progress;
-    extra_corner_radius_this_slice = ($corner_radius);
-
-    offset(r=extra_corner_radius_this_slice){
-      square(
-        [
-          width - extra_width_this_slice - extra_corner_radius_this_slice * 2,
-          height - extra_height_this_slice - extra_corner_radius_this_slice * 2
-        ],
-        center=center
-      );
+  offset(r=$corner_radius, $fa=360/$shape_facets){
+    square_shape([size.x - $corner_radius*2, size.y - $corner_radius*2], delta, progress);
   }
 }
+
+// for skin
+function skin_rounded_square(size, delta, progress, thickness_difference) =
+  polyRound(add_rounding(rectangle_profile(size - (delta * progress)), $corner_radius), $shape_facets/4);

src/shapes/sculpted_square.scad

@@ -1,13 +1,5 @@
 // rounded square shape with additional sculpting functions to better approximate
 
-// When sculpting sides, how much in should the tops come
-$side_sculpting_factor = 4.5;
-// When sculpting corners, how much extra radius should be added
-$corner_sculpting_factor = 1;
-// When doing more side sculpting corners, how much extra radius should be added
-$more_side_sculpting_factor = 0.4;
-
-
 // side sculpting functions
 // bows the sides out on stuff like SA and DSA keycaps
 function side_sculpting(progress) = (1 - progress) * $side_sculpting_factor;
@@ -21,9 +13,9 @@ module sculpted_square_shape(size, delta, progress) {
   width_difference = delta[0];
   height_difference = delta[1];
   // makes the sides bow
-  extra_side_size =  side_sculpting(progress);
+  extra_side_size =  $side_sculpting(progress);
   // makes the rounded corners of the keycap grow larger as they move upwards
-  extra_corner_size = corner_sculpting(progress);
+  extra_corner_size = $corner_sculpting(progress);
 
   // computed values for this slice
   extra_width_this_slice = (width_difference - extra_side_size) * progress;
@@ -35,13 +27,66 @@ module sculpted_square_shape(size, delta, progress) {
     height - extra_height_this_slice
   ];
 
-  offset(r = extra_corner_radius_this_slice) {
+  offset(r = extra_corner_radius_this_slice, $fa=360/$shape_facets) {
     offset(r = -extra_corner_radius_this_slice) {
       side_rounded_square(square_size, r = $more_side_sculpting_factor * progress);
     }
   }
 }
 
+function new_side_rounded_square(size, r, cornerRadius=0) =
+  let(
+    width = (size.x - r)/2,
+    height = (size.y - r)/2,
+
+    // fudge numbers! the radius conflict resolution in polyround smooths out
+    // the entire shape based on the ratios between conflicting radii. bumping
+    // these up makes the whole shape more fluid
+    widthRadius = r ? width*8 : 0,
+    heightRadius = r ? height*8 : 0,
+
+    bow = r/2,
+
+    // close enough :/
+    facets = 360 / $shape_facets/2,
+
+    points = [
+       [-width,-height,cornerRadius],
+       [0,-height-bow,widthRadius],
+       [width,-height,cornerRadius],
+       [width + bow,0,heightRadius],
+       [width,height,cornerRadius],
+       [0,height + bow,widthRadius],
+       [-width,height,cornerRadius],
+       [-width-bow,0,heightRadius]
+    ]
+  ) polyRound(points,facets);
+
+
+function skin_sculpted_square_shape(size, delta, progress, thickness_difference) =
+  let(
+    width = size[0],
+    height = size[1],
+
+    width_difference = delta[0],
+    height_difference = delta[1],
+    // makes the sides bow
+    extra_side_size =  $side_sculpting(progress),
+    // makes the rounded corners of the keycap grow larger as they move upwards
+    extra_corner_size = $corner_sculpting(progress),
+
+    // computed values for this slice
+    extra_width_this_slice = (width_difference - extra_side_size) * progress,
+    extra_height_this_slice = (height_difference - extra_side_size) * progress,
+    extra_corner_radius_this_slice = ($corner_radius + extra_corner_size),
+
+    square_size = [
+      width - extra_width_this_slice - thickness_difference,
+      height - extra_height_this_slice - thickness_difference
+    ]
+  ) new_side_rounded_square(square_size, $more_side_sculpting_factor * progress, extra_corner_radius_this_slice);
+
+
 module side_rounded_square(size, r) {
     iw = size.x - 2 * r;
     ih = size.y - 2 * r;
@@ -51,10 +96,10 @@ module side_rounded_square(size, r) {
     sw = iw / resolution;
     union() {
       if (sr > 0) {
-        translate([-iw/2, 0]) scale([sr, sh]) circle(d = resolution);
-        translate([iw/2, 0]) scale([sr, sh]) circle(d = resolution);
-        translate([0, -ih/2]) scale([sw, sr]) circle(d = resolution);
-        translate([0, ih/2]) scale([sw, sr]) circle(d = resolution);
+        translate([-iw/2, 0]) scale([sr, sh]) circle(d = resolution, $fa=360/$shape_facets);
+        translate([iw/2, 0]) scale([sr, sh]) circle(d = resolution, $fa=360/$shape_facets);
+        translate([0, -ih/2]) scale([sw, sr]) circle(d = resolution, $fa=360/$shape_facets);
+        translate([0, ih/2]) scale([sw, sr]) circle(d = resolution, $fa=360/$shape_facets);
       }
         square([iw, ih], center=true);
     }

src/shapes/square.scad

@@ -1,3 +1,53 @@
+use <../functions.scad>
+
+// we do this weird key_shape_type check here because rounded_square uses
+// square_shape, and we want flat sides to work for that too.
+// could be refactored, idk
 module square_shape(size, delta, progress){
+  if ($key_shape_type == "flat_sided_square") {
+    flat_sided_square_shape(size, delta,progress);
+  } else {
     square(size - delta * progress, center = true);
   }
+}
+/*
+[-size.x /2,-size.y / 2],
+[size.x / 2,-size.y / 2],
+[size.x / 2, size.y / 2],
+[-size.x / 2, size.y / 2] */
+
+// for side-printed keycaps. Any amount of top tilt (on a keycap with a smaller
+// top than bottom) makes the left and right side of the keycap convex. This
+// shape makes the sides flat by making the top a trapezoid.
+// This obviously doesn't work with rounded sides at all
+module flat_sided_square_shape(size, delta, progress) {
+  polygon(skin_flat_sided_square_shape(size, delta, progress));
+}
+
+function skin_flat_sided_square_shape(size,delta,progress) = [
+  [(-size.x + (delta.x + extra_keytop_length_for_flat_sides()) * progress)/2, (-size.y + delta.y * progress)/2],
+  [(size.x - (delta.x + extra_keytop_length_for_flat_sides()) * progress)/2,(-size.y + delta.y * progress)/2],
+  [(size.x - (delta.x - extra_keytop_length_for_flat_sides()) * progress)/2, (size.y - delta.y * progress)/2],
+  [(-size.x + (delta.x - extra_keytop_length_for_flat_sides()) * progress)/2, (size.y - delta.y * progress)/2]
+];
+
+function rectangle_profile(size) = [
+  [-size.x/2, -size.y/2],
+  [size.x/2, -size.y/2],
+  [size.x/2, size.y/2],
+  [-size.x/2, size.y/2],
+];
+
+function skin_square_shape(size, delta, progress, thickness_difference) =
+  let(
+    width = size[0],
+    height = size[1],
+
+    width_difference = delta[0] * progress,
+    height_difference = delta[1] * progress,
+
+    square_size = [
+      width - width_difference - thickness_difference,
+      height - height_difference - thickness_difference
+    ]
+  ) $key_shape_type == "flat_sided_square" ? skin_flat_sided_square_shape(size, delta, progress) : rectangle_profile(square_size);

src/stem_supports/brim.scad

@@ -16,12 +16,12 @@ module brim_support(stem_type, stem_support_height, slop) {
         }
       }
 
-      inside_cherry_cross(slop);
+      inside_cherry_cross($stem_inner_slop);
     }
   } else if (stem_type == "rounded_cherry") {
     difference() {
       cylinder(d=$rounded_cherry_stem_d * 2, h=stem_support_height);
-      inside_cherry_cross(slop);
+      inside_cherry_cross($stem_inner_slop);
     }
   } else if (stem_type == "box_cherry") {
     difference() {
@@ -31,7 +31,7 @@ module brim_support(stem_type, stem_support_height, slop) {
         }
       }
 
-      inside_cherry_cross(slop);
+      inside_cherry_cross($stem_inner_slop);
     }
   } else if (stem_type == "cherry_stabilizer") {
     difference() {
@@ -41,7 +41,7 @@ module brim_support(stem_type, stem_support_height, slop) {
         }
       }
 
-      inside_cherry_cross(slop);
+      inside_cherry_cross($stem_inner_slop);
     }
   } else if(stem_type == "choc") {
     translate([-5.7/2,0,0]) linear_extrude(height=stem_support_height) {

src/stem_supports/tines.scad

@@ -1,28 +1,64 @@
 include <../functions.scad>
 include <../stems/cherry.scad>
 
-// $wall_thickness/4 to reduce coincident faces
+/* NOTE: every reference to total_key_width and total_key_height
+ * is multiplied by two in order to account for offset stems
+ */ 
 module centered_tines(stem_support_height) {
-  if ($key_length < 2) translate([0,0,$stem_support_height / 2]) cube([total_key_width($wall_thickness)+$wall_thickness/4, 1, $stem_support_height], center = true);
-  translate([0,0,$stem_support_height / 2]) cube([1, total_key_height($wall_thickness), $stem_support_height], center = true);
+  if ($key_length < 2) {
+    translate([0,0,$stem_support_height / 2]) {
+      cube([total_key_width()*2, 0.5, $stem_support_height], center = true);
+    }
+  }
+
+  translate([0,0,$stem_support_height / 2]) {
+    cube([
+      1,
+      total_key_height()*2,
+      $stem_support_height
+    ],
+    center = true);
+  }
 }
 
 module tines_support(stem_type, stem_support_height, slop) {
   if (stem_type == "cherry" || stem_type == "costar_stabilizer") {
     difference () {
       union() {
-        if ($key_length < 2) translate([0,0,$stem_support_height / 2]) cube([total_key_width($wall_thickness)+$wall_thickness/4, 1, $stem_support_height], center = true);
-        translate([1.15,0,$stem_support_height / 2]) cube([.5, total_key_height($wall_thickness), $stem_support_height], center = true);
-        translate([-1.15,0,$stem_support_height / 2]) cube([.5, total_key_height($wall_thickness), $stem_support_height], center = true);
+        if ($key_length < 2) {
+          translate([0,0,$stem_support_height / 2]) {
+            cube([
+              total_key_width()*2,
+              0.5,
+              $stem_support_height
+            ], center = true);
+          }
         }
 
-      inside_cherry_cross(slop);
+        // 2 vertical tines holding either side of the cruciform
+        for (x = [2, -2]) {
+          translate([x,0,$stem_support_height / 2]) {
+            cube([
+              0.5,
+              total_key_height()*2, // this is to extend past
+              $stem_support_height
+            ], center = true);
+          }
+        }
+      }
+
+      inside_cherry_cross($stem_inner_slop);
     }
   } else if (stem_type == "cherry_stabilizer") {
     difference () {
-      union() {
-        translate([1.15,0,$stem_support_height / 2]) cube([1, total_key_height($wall_thickness), $stem_support_height], center = true);
-        translate([-1.15,0,$stem_support_height / 2]) cube([1, total_key_height($wall_thickness), $stem_support_height], center = true);
+      for (x = [1.15, -1.15]) {
+        translate([x,0,$stem_support_height / 2]) {
+          cube([
+            1,
+            total_key_height()*2,
+            $stem_support_height
+          ], center = true);
+        }
       }
 
       inside_cherry_stabilizer_cross(slop);
@@ -31,19 +67,19 @@ module tines_support(stem_type, stem_support_height, slop) {
     difference () {
       centered_tines(stem_support_height);
 
-      inside_cherry_cross(slop);
+      inside_cherry_cross($stem_inner_slop);
     }
   } else if (stem_type == "rounded_cherry") {
     difference () {
       centered_tines(stem_support_height);
 
-      inside_cherry_cross(slop);
+      inside_cherry_cross($stem_inner_slop);
     }
   } else if (stem_type == "alps"){
     centered_tines(stem_support_height);
   } else if (stem_type == "choc"){
-    if ($key_length < 2) translate([0,0,$stem_support_height / 2]) cube([total_key_width($wall_thickness)+$wall_thickness/4, 0.42, $stem_support_height], center = true);
-    /* translate([-5.7/2,0,$stem_support_height / 2]) cube([0.5, total_key_height($wall_thickness), $stem_support_height], center = true); */
-    /* translate([5.7/2,0,$stem_support_height / 2]) cube([0.5, total_key_height($wall_thickness), $stem_support_height], center = true); */
+    if ($key_length < 2) translate([0,0,$stem_support_height / 2]) cube([total_key_width(), 0.42, $stem_support_height], center = true);
+    /* translate([-5.7/2,0,$stem_support_height / 2]) cube([0.5, total_key_height(), $stem_support_height], center = true); */
+    /* translate([5.7/2,0,$stem_support_height / 2]) cube([0.5, total_key_height(), $stem_support_height], center = true); */
   }
 }

src/stems.scad

@@ -8,21 +8,21 @@ include <stems/choc.scad>
 
 
 //whole stem, alps or cherry, trimmed to fit
-module stem(stem_type, depth, slop){
+module stem(stem_type, depth, slop, throw){
     if (stem_type == "alps") {
-      alps_stem(depth, slop);
+      alps_stem(depth, slop, throw);
     } else if (stem_type == "cherry" || stem_type == "costar_stabilizer") {
-      cherry_stem(depth, slop);
+      cherry_stem(depth, slop, throw);
     } else if (stem_type == "rounded_cherry") {
-      rounded_cherry_stem(depth, slop);
+      rounded_cherry_stem(depth, slop, throw);
     } else if (stem_type == "box_cherry") {
-      box_cherry_stem(depth, slop);
+      box_cherry_stem(depth, slop, throw);
     } else if (stem_type == "filled") {
       filled_stem();
     } else if (stem_type == "cherry_stabilizer") {
-      cherry_stabilizer_stem(depth, slop);
+      cherry_stabilizer_stem(depth, slop, throw);
     } else if (stem_type == "choc") {
-      choc_stem(depth, slop);
+      choc_stem(depth, slop, throw);
     } else if (stem_type == "disable") {
       children();
     } else {

src/stems/alps.scad

@@ -1,4 +1,4 @@
-module alps_stem(depth, has_brim, slop){
+module alps_stem(depth, slop, throw){
   linear_extrude(height=depth) {
     square($alps_stem, center = true);
   }

src/stems/box_cherry.scad

@@ -1,7 +1,7 @@
 include <../functions.scad>
 include <cherry.scad>
 
-module box_cherry_stem(depth, slop) {
+module box_cherry_stem(depth, slop, throw) {
   difference(){
     // outside shape
     linear_extrude(height = depth) {
@@ -11,6 +11,6 @@ module box_cherry_stem(depth, slop) {
     }
 
     // inside cross
-    inside_cherry_cross(slop);
+    inside_cherry_cross($stem_inner_slop);
   }
 }

src/stems/cherry.scad

@@ -2,7 +2,7 @@ include <../functions.scad>
 
 // extra length to the vertical tine of the inside cherry cross
 // splits the stem into halves - allows easier fitment
-extra_vertical = 0.6;
+extra_vertical = 100;
 
 module inside_cherry_cross(slop) {
   // inside cross
@@ -23,7 +23,7 @@ module inside_cherry_cross(slop) {
   }
 }
 
-module cherry_stem(depth, slop) {
+module cherry_stem(depth, slop, throw) {
   difference(){
     // outside shape
     linear_extrude(height = depth) {
@@ -32,6 +32,6 @@ module cherry_stem(depth, slop) {
       }
     }
 
-    inside_cherry_cross(slop);
+    inside_cherry_cross($stem_inner_slop);
   }
 }

src/stems/cherry_stabilizer.scad

@@ -4,18 +4,18 @@ include <../functions.scad>
 // splits the stem into halves - allows easier fitment
 extra_vertical = 0.6;
 
-module inside_cherry_stabilizer_cross(slop) {
+module inside_cherry_stabilizer_cross(slop, throw) {
   // inside cross
   // translation purely for aesthetic purposes, to get rid of that awful lattice
   translate([0,0,-SMALLEST_POSSIBLE]) {
-    linear_extrude(height = $stem_throw) {
+    linear_extrude(height = throw) {
       square(cherry_cross(slop, extra_vertical)[0], center=true);
       square(cherry_cross(slop, extra_vertical)[1], center=true);
     }
   }
 }
 
-module cherry_stabilizer_stem(depth, slop) {
+module cherry_stabilizer_stem(depth, slop, throw) {
   difference(){
     // outside shape
     linear_extrude(height = depth) {
@@ -24,6 +24,6 @@ module cherry_stabilizer_stem(depth, slop) {
       }
     }
 
-    inside_cherry_stabilizer_cross(slop);
+    inside_cherry_stabilizer_cross(slop, throw);
   }
 }

src/stems/choc.scad

@@ -1,5 +1,17 @@
-module choc_stem(depth, slop){
+separation = 5.7;
 
-  translate([-5.7/2, 0, depth/2]) cube([1.2 - slop, 3 - slop / 2, depth], center=true);
-  translate([5.7/2, 0, depth/2]) cube([1.2 - slop, 3 - slop / 2, depth], center=true);
+positions = [
+  [separation/2, 0],
+  [-separation/2, 0],
+];
+
+// TODO throw not used
+module choc_stem(depth, slop, throw){ 
+  for (position=positions) {
+    translate([position.x,position.y, depth/2]) single_choc_stem(depth, slop);
+  }
+}
+
+module single_choc_stem(depth, slop) {
+  cube([$choc_stem.x - slop, $choc_stem.y - slop, depth], center=true);
 }

src/stems/filled.scad

@@ -1,4 +1,4 @@
-module filled_stem() {
+module filled_stem(_depth, _slop, _throw) {
   // I broke the crap out of this stem type due to the changes I made around how stems are differenced
   // now that we just take the dish out of stems in order to support stuff like
   // bare stem keycaps (and buckling spring eventually) we can't just make a

src/stems/rounded_cherry.scad

@@ -1,12 +1,12 @@
 include <../functions.scad>
 include <cherry.scad>
 
-module rounded_cherry_stem(depth, slop) {
+module rounded_cherry_stem(depth, slop, throw) {
   difference(){
     cylinder(d=$rounded_cherry_stem_d, h=depth);
 
     // inside cross
     // translation purely for aesthetic purposes, to get rid of that awful lattice
-    inside_cherry_cross(slop);
+    inside_cherry_cross($stem_inner_slop);
   }
 }

src/supports/flared.scad

@@ -1,4 +1,7 @@
 include <../functions.scad>
+// TODO this define doesn't do anything besides tell me I used flat() in this file
+// is it better than not having it at all?
+include <./flat.scad>
 
 // figures out the scale factor needed to make a 45 degree wall
 function scale_for_45(height, starting_size) = (height * 2 + starting_size) / starting_size;
@@ -6,6 +9,11 @@ function scale_for_45(height, starting_size) = (height * 2 + starting_size) / st
 // complicated since we want the different stems to work well
 // also kind of messy... oh well
 module flared(stem_type, loft, height) {
+  // flat support. straight flat support has a tendency to shear off; flared support
+  // all the way to the top has a tendency to warp the outside of the keycap.
+  // hopefully the compromise is both
+  flat(stem_type, loft + height/4, height);
+
   translate([0,0,loft]){
     if (stem_type == "rounded_cherry") {
       linear_extrude(height=height, scale = scale_for_45(height, $rounded_cherry_stem_d)){
@@ -33,26 +41,6 @@ module flared(stem_type, loft, height) {
         }
       }
     } else if (stem_type == "choc") {
-      choc_scale = [scale_for_45(height, $choc_stem[0]), scale_for_45(height, $choc_stem[1])];
-      // double support
-      /*
-      translate([-5.7/2,0,0]) linear_extrude(height=height, scale = choc_scale){
-        // TODO make a choc_stem() function so it can build in the slop
-        square($choc_stem - [$stem_slop, $stem_slop], center=true);
-      }
-
-      translate([5.7/2,0,0]) linear_extrude(height=height, scale = choc_scale){
-        square($choc_stem - [$stem_slop, $stem_slop], center=true);
-      } */
-
-      // single support, full width
-
-      /* translate([0,0,0]) linear_extrude(height=height, scale = choc_scale){
-        // TODO make a choc_stem() function so it can build in the slop
-        square([total_key_width($wall_thickness), $choc_stem[1] - $stem_slop], center=true);
-      } */
-
-
       // single support, just the stem
       new_choc_scale = [scale_for_45(height, $choc_stem[0] + 5.7 - $stem_slop), scale_for_45(height, $choc_stem[1])];
       translate([0,0,0]) linear_extrude(height=height, scale = new_choc_scale){