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refactor. add stem offset

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Bob - Home - Windows 2016-04-23 21:26:29 -04:00
parent 87c626d318
commit c1c166d9dc
1 changed files with 223 additions and 114 deletions
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key.scad
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@ -1,15 +1,27 @@
// Row 5? Cherry MX key /* [Hidden] */
//change to round things better //change to round things better
$fn = 64; $fn = 64;
unit = 19.05;
//scale of inner to outer shape //scale of inner to outer shape
key_wall_thickness_width = .8; key_wall_thickness_width = .8;
key_wall_thickness_height = .8; key_wall_thickness_height = .8;
key_wall_thickness_depth = .8; key_wall_thickness_depth = .8;
/* [Key] */
//length in units of key //length in units of key
key_length = 1; key_length = 1;
//keycap type, [0:DCS Row 5, 1:DCS Row 1, 2:DCS Row 2, 3:DCS Row 3, 4:DCS Row 4, 5:DSA Row 3, 6:SA Row 1, 7:SA Row 2, 8:SA Row 3, 9:SA Row 4, 10:DCS Row 4 Spacebar]
key_profile = 0;
/* [Brim] */
//connector brim //connector brim
//enable brim for connector //enable brim for connector
has_brim = 0; has_brim = 0;
@ -20,22 +32,35 @@ brim_depth = .3;
/* [Stabilizers] */
//whether stabilizer connectors are enabled //whether stabilizer connectors are enabled
stabilizers = 0; stabilizers = 0;
//stabilizer distance //stabilizer distance in mm
stabilizer_distance = 50; stabilizer_distance = 50;
/* [Dish] */
// invert dishing. mostly for spacebar // invert dishing. mostly for spacebar
inverted_dish = 0; inverted_dish = 0;
//keycap type, [0..11] /* [Stem] */
key_profile = 0;
// cherry MX or Alps stem, or totally broken circular cherry stem [0..2]
stem_profile = 0;
// how inset the stem is from the bottom of the key. experimental. requires support
stem_inset = 0;
// stem offset in units NOT MM. for stepped caps lock
stem_offset = 0;
//profile specific stuff //profile specific stuff
/*god, I would love a class right here /*
here we have, for lack of a better implementation, an array Here we have, for lack of a better implementation, an array
that defines the more intimate aspects of a key. that defines the more intimate aspects of a key.
order is thus: order is thus:
1. Bottom Key Width: width of the immediate bottom of the key 1. Bottom Key Width: width of the immediate bottom of the key
@ -45,7 +70,7 @@ key_profile = 0;
5. total Depth: how tall the total in the switch is before dishing 5. total Depth: how tall the total in the switch is before dishing
6. Top Tilt: X rotation of the top. Top and dish obj are rotated 6. Top Tilt: X rotation of the top. Top and dish obj are rotated
7. Top Skew: Y skew of the top of the key relative to the bottom. DCS has some, DSA has none (its centered) 7. Top Skew: Y skew of the top of the key relative to the bottom. DCS has some, DSA has none (its centered)
8. Dish Type: type of dishing. currently sphere and cylinder 8. Dish Type: type of dishing. check out dish function for the options
9. Dish Depth: how many mm to cut into the key with 9. Dish Depth: how many mm to cut into the key with
10. Dish Radius: radius of dish obj, the Sphere or Cylinder that cuts into the keycap 10. Dish Radius: radius of dish obj, the Sphere or Cylinder that cuts into the keycap
*/ */
@ -220,23 +245,7 @@ key_profiles = [
0, // Dish Skew X 0, // Dish Skew X
0 // DIsh Skew Y 0 // DIsh Skew Y
], ],
[ //DCS ROW 2 SPACEBAR [ //DCS ROW 4 SPACEBAR
18.16, // Bottom Key Width
18.16, // Bottom Key Height
6.2, // Top Key Width Difference
4, // Top Key Height Difference
7.5, // total Depth
3, // Top Tilt
1.75,// Top Skew
//Dish Profile
2, // Dish Type
1, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
[ //DCS ROW 4 SPACEBAR (ORIGINAL)
18.16, // Bottom Key Width 18.16, // Bottom Key Width
18.16, // Bottom Key Height 18.16, // Bottom Key Height
6, // Top Key Width Difference 6, // Top Key Width Difference
@ -254,15 +263,6 @@ key_profiles = [
], ],
]; ];
// cherry MX or Alps stem [0..1]
stem_profile=0;
// how inset the stem is from the bottom of the key. experimental
stem_inset=0;
//libraries. they generate geometry
//that is used by other things to generate features
//centered //centered
module roundedRect(size, radius) { module roundedRect(size, radius) {
x = size[0]; x = size[0];
@ -286,7 +286,6 @@ module roundedRect(size, radius) {
} }
} }
//bottom we can use to anchor things //bottom we can use to anchor things
module inside(key_profile) module inside(key_profile)
{ {
@ -302,6 +301,8 @@ module inside(key_profile)
module cherry_stem(){ module cherry_stem(){
// cross length // cross length
cross_length = 4.4; cross_length = 4.4;
//extra vertical cross length - the extra length of the up/down bar of the cross
extra_vertical_cross_length = 1.1;
//dimensions of connector //dimensions of connector
// outer cross extra length in x // outer cross extra length in x
extra_outer_cross_width = 2.10; extra_outer_cross_width = 2.10;
@ -312,32 +313,33 @@ module cherry_stem(){
horizontal_cross_width = 1.4; horizontal_cross_width = 1.4;
// vertical cross bar width // vertical cross bar width
vertical_cross_width = 1.3; vertical_cross_width = 1.3;
//extra vertical cross length - the extra length of the up/down bar of the cross
extra_vertical_cross_length = 1.1;
// cross depth, stem height is 3.4mm // cross depth, stem height is 3.4mm
cross_depth = 4; cross_depth = 4;
difference(){ difference(){
union(){ union(){
translate( if (stem_profile != 2){
[ translate([
-(cross_length+extra_outer_cross_width)/2, -(cross_length+extra_outer_cross_width)/2,
-(cross_length+extra_outer_cross_height)/2, -(cross_length+extra_outer_cross_height)/2,
stem_inset stem_inset
] ])
) cube([ // the base of the stem, the part the cruciform digs into
cube( // the base of the stem, the part the cruciform digs into
[
cross_length+extra_outer_cross_width, cross_length+extra_outer_cross_width,
cross_length+extra_outer_cross_height, cross_length+extra_outer_cross_height,
50 50
] ]);
); } else {
cylinder(
d = cross_length+extra_outer_cross_height,
h = 50
);
}
if (has_brim == 1){ cylinder(r=brim_radius,h=brim_depth); } if (has_brim == 1){ cylinder(r=brim_radius,h=brim_depth); }
} }
//the cross part of the steam //the cross part of the steam
translate([0,0,(cross_depth)/2 + stem_inset]){ translate([0,0,(cross_depth)/2 + stem_inset]){
cube([vertical_cross_width,cross_length+extra_vertical_cross_length,cross_depth], center=true );//remove +2 to print with cross cube([vertical_cross_width,cross_length+extra_vertical_cross_length,cross_depth], center=true );
cube([cross_length,horizontal_cross_width,cross_depth], center=true ); cube([cross_length,horizontal_cross_width,cross_depth], center=true );
} }
} }
@ -355,16 +357,17 @@ module alps_stem(){
translate([0,0,cross_depth/2 + stem_inset]){ translate([0,0,cross_depth/2 + stem_inset]){
cube([width,height,cross_depth], center = true); cube([width,height,cross_depth], center = true);
} }
} }
//whole connector //whole connector
module connector(key_profile,has_brim){ module connector(key_profile,has_brim){
difference(){ difference(){
//TODO can I really not do an array index here? //TODO can I really not do an array index here?
if(stem_profile==0) cherry_stem(); translate([-unit * stem_offset, 0, 0])
if(stem_profile==1) alps_stem(); union(){
if(stem_profile == 0 || stem_profile == 2) cherry_stem();
if(stem_profile == 1) alps_stem();
}
inside(key_profile); inside(key_profile);
} }
} }
@ -404,6 +407,7 @@ module shape(key_profile, thickness){
} }
//conicalish clipping shape to trim things off the outside of the keycap //conicalish clipping shape to trim things off the outside of the keycap
// literally just a key with height of 2 to make sure nothing goes awry with dishing etc
module outside(key_profile, thickness){ module outside(key_profile, thickness){
difference(){ difference(){
cube([100000,100000,100000],center = true); cube([100000,100000,100000],center = true);
@ -429,10 +433,26 @@ module shape_hull(key_profile, thickness, modifier){
roundedRect([bottom_key_width*key_length - thickness -top_key_width_difference * modifier,bottom_key_height - thickness -top_key_height_difference * modifier,.001],1.5); roundedRect([bottom_key_width*key_length - thickness -top_key_width_difference * modifier,bottom_key_height - thickness -top_key_height_difference * modifier,.001],1.5);
} }
} }
//end libraries
//dish selector //dish selector
module dish(key_profile){ //this thing is a monster module dish(key_profile){ //this thing is a monster
dish_type = key_profile[7];
if(dish_type == 0){ // cylindrical dish
cylindrical_dish(key_profile);
}
else if (dish_type == 1) { // spherical dish
spherical_dish(key_profile);
}
else if (dish_type == 2){ // SIDEWAYS cylindrical dish - used for spacebar
sideways_cylindrical_dish(key_profile);
}
else if (dish_type == 3){
// no dish
}
}
module cylindrical_dish(key_profile){
// names, so I don't go crazy // names, so I don't go crazy
total_key_width = key_profile[0]; total_key_width = key_profile[0];
total_key_height = key_profile[1]; total_key_height = key_profile[1];
@ -450,70 +470,105 @@ module dish(key_profile){ //this thing is a monster
key_width = total_key_width * key_length - width_difference; key_width = total_key_width * key_length - width_difference;
key_height = total_key_height - height_difference; key_height = total_key_height - height_difference;
if(dish_type == 0){ // cylindrical dish /* we do some funky math here
/* we do some funky math here * basically you want to have the dish "dig in" to the keycap x millimeters
* basically you want to have the dish "dig in" to the keycap x millimeters * in order to do that you have to solve a small (2d) system of equations
* in order to do that you have to solve a small (2d) system of equations * where the chord of the spherical cross section of the dish is
* where the chord of the spherical cross section of the dish is * the width of the keycap.
* the width of the keycap. */
*/ // the distance you have to move the dish up so it digs in dish_depth millimeters
// the distance you have to move the dish up so it digs in dish_depth millimeters chord_length = (pow(key_width, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
chord_length = (pow(key_width, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth); //the radius of the dish
//the radius of the dish rad = (pow(key_width, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
rad = (pow(key_width, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
if (inverted_dish == 1){ if (inverted_dish == 1){
translate([dish_skew_x, top_skew + dish_skew_y, total_depth]) translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
rotate([90-top_tilt,0,0]) rotate([90-top_tilt,0,0])
translate([0,-chord_length,0]) translate([0,-chord_length,0])
cylinder(h=100,r=rad, $fn=1024, center=true); cylinder(h=100,r=rad, $fn=1024, center=true);
}
else{
translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
rotate([90-top_tilt,0,0])
translate([0,chord_length,0])
cylinder(h=100,r=rad, $fn=1024, center=true);
}
} }
else if (dish_type == 1) { // spherical dish else{
//same thing here, but we need the corners to just touch - so we have to find the hypotenuse of the top translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
chord = pow((pow(key_width,2) + pow(key_height, 2)),0.5); //getting diagonal of the top rotate([90-top_tilt,0,0])
translate([0,chord_length,0])
// the distance you have to move the dish up so it digs in dish_depth millimeters cylinder(h=100,r=rad, $fn=1024, center=true);
chord_length = (pow(chord, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
//the radius of the dish
rad = (pow(chord, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
if (inverted_dish == 1){
translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
rotate([-top_tilt,0,0])
translate([0,0,-chord_length])
sphere(r=rad, $fn=256);
}
else{
translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
rotate([-top_tilt,0,0])
translate([0,0,chord_length])
sphere(r=rad, $fn=256);
}
} }
else if (dish_type == 2){// SIDEWAYS cylindrical dish - used for spacebar
chord_length = (pow(key_height, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth); }
rad = (pow(key_height, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
if (inverted_dish == 1){ module spherical_dish(key_profile){
translate([dish_skew_x, top_skew + dish_skew_y, total_depth]) // names, so I don't go crazy
rotate([90,top_tilt,90]) total_key_width = key_profile[0];
translate([0,-chord_length,0]) total_key_height = key_profile[1];
cylinder(h=key_width + 20,r=rad, $fn=1024, center=true); // +20 just cuz width_difference = key_profile[2];
} height_difference = key_profile[3];
else{ total_depth = key_profile[4];
translate([dish_skew_x, top_skew + dish_skew_y, total_depth]) top_tilt = key_profile[5];
rotate([90,top_tilt,90]) top_skew = key_profile[6];
translate([0,chord_length,0]) dish_type = key_profile[7];
cylinder(h=key_width + 20,r=rad, $fn=1024, center=true); dish_depth = key_profile[8];
} dish_skew_x = key_profile[9];
dish_skew_y = key_profile[10];
//dependant variables
key_width = total_key_width * key_length - width_difference;
key_height = total_key_height - height_difference;
//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(key_width,2) + pow(key_height, 2)),0.5); //getting diagonal of the top
// the distance you have to move the dish up so it digs in dish_depth millimeters
chord_length = (pow(chord, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
//the radius of the dish
rad = (pow(chord, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
if (inverted_dish == 1){
translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
rotate([-top_tilt,0,0])
translate([0,0,-chord_length])
sphere(r=rad, $fn=256);
}
else{
translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
rotate([-top_tilt,0,0])
translate([0,0,chord_length])
sphere(r=rad, $fn=256);
}
}
module sideways_cylindrical_dish(key_profile){
// names, so I don't go crazy
total_key_width = key_profile[0];
total_key_height = key_profile[1];
width_difference = key_profile[2];
height_difference = key_profile[3];
total_depth = key_profile[4];
top_tilt = key_profile[5];
top_skew = key_profile[6];
dish_type = key_profile[7];
dish_depth = key_profile[8];
dish_skew_x = key_profile[9];
dish_skew_y = key_profile[10];
//dependant variables
key_width = total_key_width * key_length - width_difference;
key_height = total_key_height - height_difference;
chord_length = (pow(key_height, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
rad = (pow(key_height, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
if (inverted_dish == 1){
translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
rotate([90,top_tilt,90])
translate([0,-chord_length,0])
cylinder(h=key_width + 20,r=rad, $fn=1024, center=true); // +20 just cuz
}
else{
translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
rotate([90,top_tilt,90])
translate([0,chord_length,0])
cylinder(h=key_width + 20,r=rad, $fn=1024, center=true);
} }
} }
@ -534,4 +589,58 @@ module key(key_profile){
} }
// ACTUAL OUTPUT
key(key_profiles[key_profile]); key(key_profiles[key_profile]);
// non-implemented ISO enter test stuff
// NOT 3D, NOT CENTERED
module fakeISOEnter(){
z = 0.001;
radius = 2;
unit = 18.16; // TODO probably not
pointArray = [
[0 + radius,0 + radius],
[unit*1.25 - radius, 0 + radius],
[unit*1.25 - radius, unit*2 - radius],
[unit*-.25 + radius, unit*2 - radius],
[unit*-.25 + radius, unit*1 + radius],
[0 + radius, unit*1 + radius]
];
minkowski(){
circle(r=radius, $fn=24);
polygon(points=pointArray);
}
}
module ISOEnterShapeHull(key_profile, thickness, modifier){
unit = 18.16; // TODO probably not
bottom_key_width = key_profile[0] ;
bottom_key_height = key_profile[1];
top_key_width_difference = key_profile[2];
top_key_height_difference = key_profile[3];
total_depth = key_profile[4] - thickness;
top_tilt = key_profile[5];
top_skew = key_profile[6];
top_width_scale_difference = (bottom_key_width - top_key_width_difference) / (bottom_key_width);
top_height_scale_difference = (bottom_key_width - top_key_width_difference) / (bottom_key_width);
linear_extrude(height=total_depth*modifier, scale=[top_width_scale_difference, top_height_scale_difference]){
translate([-unit*.5, -unit*1.5]) minkowski(){
fakeISOEnter();
}
}
}