KeyV2/key.scad

646 lines
16 KiB
OpenSCAD

/* [Hidden] */
//change to round things better
$fn = 64;
unit = 19.05;
//scale of inner to outer shape
key_wall_thickness_width = .8;
key_wall_thickness_height = .8;
key_wall_thickness_depth = .8;
/* [Key] */
//length in units of key
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
//enable brim for connector
has_brim = 0;
//brim radius. 11 ensconces normal keycap stem in normal keycap
brim_radius = 11;
//brim depth
brim_depth = .3;
/* [Stabilizers] */
//whether stabilizer connectors are enabled
stabilizers = 0;
//stabilizer distance in mm
stabilizer_distance = 50;
/* [Dish] */
// invert dishing. mostly for spacebar
inverted_dish = 0;
/* [Stem] */
// 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
/*
Here we have, for lack of a better implementation, an array
that defines the more intimate aspects of a key.
order is thus:
1. Bottom Key Width: width of the immediate bottom of the key
2. Bottom Key Height: height of the immediate bottom of the key
3. Top Key Width Difference: mm to subtract from bottom key width to create top key width
4. Top Key Height Difference: mm to subtract from bottom key height to create top key height
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
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. check out dish function for the options
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
*/
key_profiles = [
//DCS Profile
[ //DCS ROW 5
18.16, // Bottom Key Width
18.16, // Bottom Key Height
6, // Top Key Width Difference
4, // Top Key Height Difference
11.5, // total Depth
-6, // Top Tilt
1.75,// Top Skew
//Dish Profile
0, // Dish Type
1, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
[ //DCS ROW 1
18.16, // Bottom Key Width
18.16, // Bottom Key Height
6, // Top Key Width Difference
4, // Top Key Height Difference
8.5, // total Depth
-1, // Top Tilt
1.75,// Top Skew
//Dish Profile
0, // Dish Type
1, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
[ //DCS ROW 2
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
0, // Dish Type
1, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
[ //DCS ROW 3
18.16, // Bottom Key Width
18.16, // Bottom Key Height
6, // Top Key Width Difference
4, // Top Key Height Difference
6.2, // total Depth
7, // Top Tilt
1.75,// Top Skew
//Dish Profile
0, // Dish Type
1, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
[ //DCS ROW 4
18.16, // Bottom Key Width
18.16, // Bottom Key Height
6, // Top Key Width Difference
4, // Top Key Height Difference
6.2, // total Depth
16, // Top Tilt
1.75,// Top Skew
//Dish Profile
0, // Dish Type
1, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
//DSA Profile
[ //DSA ROW 3
18.4, // Bottom Key Width
18.4, // Bottom Key Height
5.7, // Top Key Width Difference
5.7, // Top Key Height Difference
7.4, // total Depth
0, // Top Tilt
0, // Top Skew
//Dish Profile
1, // Dish Type
1.2, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
//SA Proile
[ //SA ROW 1
18.4, // Bottom Key Width
18.4, // Bottom Key Height
5.7, // Top Key Width Difference
5.7, // Top Key Height Difference
13.73, // total Depth, fudged
-14, // Top Tilt
0, // Top Skew
//Dish Profile
1, // Dish Type
1.2, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
[ //SA ROW 2
18.4, // Bottom Key Width
18.4, // Bottom Key Height
5.7, // Top Key Width Difference
5.7, // Top Key Height Difference
11.73, // total Depth
-7, // Top Tilt
0, // Top Skew
//Dish Profile
1, // Dish Type
1.2, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
[ //SA ROW 3
18.4, // Bottom Key Width
18.4, // Bottom Key Height
5.7, // Top Key Width Difference
5.7, // Top Key Height Difference
11.73, // total Depth
0, // Top Tilt
0, // Top Skew
//Dish Profile
1, // Dish Type
1.2, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
[ //SA ROW 4
18.4, // Bottom Key Width
18.4, // Bottom Key Height
5.7, // Top Key Width Difference
5.7, // Top Key Height Difference
11.73, // total Depth
7, // Top Tilt
0, // Top Skew
//Dish Profile
1, // Dish Type
1.2, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
[ //DCS ROW 4 SPACEBAR
18.16, // Bottom Key Width
18.16, // Bottom Key Height
6, // Top Key Width Difference
4, // Top Key Height Difference
6.2, // total Depth
16, // Top Tilt
1.75,// Top Skew
//Dish Profile
2, // Dish Type
1, // Dish Depth
0, // Dish Skew X
0 // DIsh Skew Y
],
];
//centered
module roundedRect(size, radius) {
x = size[0];
y = size[1];
z = size[2];
translate([-x/2,-y/2,0])
linear_extrude(height=z)
hull() {
translate([radius, radius, 0])
circle(r=radius);
translate([x - radius, radius, 0])
circle(r=radius);
translate([x - radius, y - radius, 0])
circle(r=radius);
translate([radius, y - radius, 0])
circle(r=radius);
}
}
//bottom we can use to anchor things
module inside(key_profile)
{
difference(){
translate([0,0,50])
cube([100,100,100],center=true);
translate([0,0,-.1])
shape(key_profile, 3);
}
}
module cherry_stem(){
// cross length
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
// outer cross extra length in x
extra_outer_cross_width = 2.10;
// outer cross extra length in y
extra_outer_cross_height = 1.0;
// dimensions of cross
// horizontal cross bar width
horizontal_cross_width = 1.4;
// vertical cross bar width
vertical_cross_width = 1.3;
// cross depth, stem height is 3.4mm
cross_depth = 4;
difference(){
union(){
if (stem_profile != 2){
translate([
-(cross_length+extra_outer_cross_width)/2,
-(cross_length+extra_outer_cross_height)/2,
stem_inset
])
cube([ // the base of the stem, the part the cruciform digs into
cross_length+extra_outer_cross_width,
cross_length+extra_outer_cross_height,
50
]);
} else {
cylinder(
d = cross_length+extra_outer_cross_height,
h = 50
);
}
if (has_brim == 1){ cylinder(r=brim_radius,h=brim_depth); }
}
//the cross part of the steam
translate([0,0,(cross_depth)/2 + stem_inset]){
cube([vertical_cross_width,cross_length+extra_vertical_cross_length,cross_depth], center=true );
cube([cross_length,horizontal_cross_width,cross_depth], center=true );
}
}
}
module alps_stem(){
cross_depth = 40;
width = 4.45;
height = 2.25;
base_width = 12;
base_height = 15;
//translate([0,0,cross_depth + 50/2]) cube([base_width, base_height, 50], center=true);
translate([0,0,cross_depth/2 + stem_inset]){
cube([width,height,cross_depth], center = true);
}
}
//whole connector
module connector(key_profile,has_brim){
difference(){
//TODO can I really not do an array index here?
translate([-unit * stem_offset, 0, 0])
union(){
if(stem_profile == 0 || stem_profile == 2) cherry_stem();
if(stem_profile == 1) alps_stem();
}
inside(key_profile);
}
}
//stabilizer connectors
module stabilizer_connectors(key_profile,has_brim){
translate([stabilizer_distance,0,0]) connector(key_profile, has_brim);
translate([-stabilizer_distance,0,0]) connector(key_profile, has_brim);
}
//i h8 u scad
module shape(key_profile, thickness){
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];
if (inverted_dish == 1){
difference(){
union(){
shape_hull(key_profile, thickness, 1);
dish(key_profile, thickness);
}
outside(key_profile, thickness);
}
}
else{
difference(){
shape_hull(key_profile, thickness, 1);
dish(key_profile, thickness);
}
}
}
//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){
difference(){
cube([100000,100000,100000],center = true);
shape_hull(key_profile, thickness, 2);
}
}
//super basic hull shape without dish
module shape_hull(key_profile, thickness, modifier){
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];
hull(){
roundedRect([bottom_key_width*key_length - thickness,bottom_key_height - thickness,.001],1.5);
translate([0,top_skew,total_depth * modifier])
rotate([-top_tilt,0,0])
roundedRect([bottom_key_width*key_length - thickness -top_key_width_difference * modifier,bottom_key_height - thickness -top_key_height_difference * modifier,.001],1.5);
}
}
//dish selector
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
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;
/* we do some funky math here
* 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
* where the chord of the spherical cross section of the dish is
* the width of the keycap.
*/
// 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);
//the radius of the dish
rad = (pow(key_width, 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,0,0])
translate([0,-chord_length,0])
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);
}
}
module spherical_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;
//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);
}
}
//actual full key with space carved out and keystem/stabilizer connectors
module key(key_profile){
union(){
difference(){
shape(key_profile, 0);
translate([0,0,-.1])
shape(key_profile, 3);
}
connector(key_profile,has_brim);
if (stabilizers == 1){
stabilizer_connectors(key_profile,has_brim);
}
}
}
// ACTUAL OUTPUT
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();
}
}
}