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refactor. add stem offset
This commit is contained in:
Bob - Home - Windows
parent
87c626d318
commit
c1c166d9dc
1 changed files with 223 additions and 114 deletions
337
key.scad
337
key.scad
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@ -1,15 +1,27 @@
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// Row 5? Cherry MX key
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/* [Hidden] */
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//change to round things better
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$fn = 64;
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unit = 19.05;
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//scale of inner to outer shape
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key_wall_thickness_width = .8;
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key_wall_thickness_width = .8;
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key_wall_thickness_height = .8;
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key_wall_thickness_depth = .8;
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key_wall_thickness_depth = .8;
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/* [Key] */
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//length in units of key
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key_length = 1;
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//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]
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key_profile = 0;
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/* [Brim] */
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//connector brim
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//enable brim for connector
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has_brim = 0;
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@ -20,22 +32,35 @@ brim_depth = .3;
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/* [Stabilizers] */
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//whether stabilizer connectors are enabled
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stabilizers = 0;
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//stabilizer distance
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//stabilizer distance in mm
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stabilizer_distance = 50;
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/* [Dish] */
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// invert dishing. mostly for spacebar
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inverted_dish = 0;
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//keycap type, [0..11]
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key_profile = 0;
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/* [Stem] */
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// cherry MX or Alps stem, or totally broken circular cherry stem [0..2]
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stem_profile = 0;
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// how inset the stem is from the bottom of the key. experimental. requires support
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stem_inset = 0;
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// stem offset in units NOT MM. for stepped caps lock
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stem_offset = 0;
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//profile specific stuff
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/*god, I would love a class right here
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here we have, for lack of a better implementation, an array
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/*
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Here we have, for lack of a better implementation, an array
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that defines the more intimate aspects of a key.
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order is thus:
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1. Bottom Key Width: width of the immediate bottom of the key
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@ -45,7 +70,7 @@ key_profile = 0;
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5. total Depth: how tall the total in the switch is before dishing
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6. Top Tilt: X rotation of the top. Top and dish obj are rotated
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7. Top Skew: Y skew of the top of the key relative to the bottom. DCS has some, DSA has none (its centered)
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8. Dish Type: type of dishing. currently sphere and cylinder
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8. Dish Type: type of dishing. check out dish function for the options
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9. Dish Depth: how many mm to cut into the key with
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10. Dish Radius: radius of dish obj, the Sphere or Cylinder that cuts into the keycap
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*/
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@ -220,23 +245,7 @@ key_profiles = [
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0, // Dish Skew X
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0 // DIsh Skew Y
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],
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[ //DCS ROW 2 SPACEBAR
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18.16, // Bottom Key Width
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18.16, // Bottom Key Height
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6.2, // Top Key Width Difference
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4, // Top Key Height Difference
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7.5, // total Depth
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3, // Top Tilt
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1.75,// Top Skew
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//Dish Profile
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2, // Dish Type
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1, // Dish Depth
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0, // Dish Skew X
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0 // DIsh Skew Y
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],
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[ //DCS ROW 4 SPACEBAR (ORIGINAL)
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[ //DCS ROW 4 SPACEBAR
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18.16, // Bottom Key Width
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18.16, // Bottom Key Height
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6, // Top Key Width Difference
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@ -254,15 +263,6 @@ key_profiles = [
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],
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];
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// cherry MX or Alps stem [0..1]
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stem_profile=0;
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// how inset the stem is from the bottom of the key. experimental
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stem_inset=0;
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//libraries. they generate geometry
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//that is used by other things to generate features
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//centered
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module roundedRect(size, radius) {
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x = size[0];
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@ -286,7 +286,6 @@ module roundedRect(size, radius) {
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}
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}
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//bottom we can use to anchor things
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module inside(key_profile)
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{
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@ -302,6 +301,8 @@ module inside(key_profile)
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module cherry_stem(){
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// cross length
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cross_length = 4.4;
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//extra vertical cross length - the extra length of the up/down bar of the cross
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extra_vertical_cross_length = 1.1;
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//dimensions of connector
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// outer cross extra length in x
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extra_outer_cross_width = 2.10;
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@ -312,32 +313,33 @@ module cherry_stem(){
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horizontal_cross_width = 1.4;
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// vertical cross bar width
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vertical_cross_width = 1.3;
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//extra vertical cross length - the extra length of the up/down bar of the cross
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extra_vertical_cross_length = 1.1;
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// cross depth, stem height is 3.4mm
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cross_depth = 4;
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difference(){
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union(){
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translate(
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[
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-(cross_length+extra_outer_cross_width)/2,
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-(cross_length+extra_outer_cross_height)/2,
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stem_inset
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]
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)
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cube( // the base of the stem, the part the cruciform digs into
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[
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if (stem_profile != 2){
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translate([
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-(cross_length+extra_outer_cross_width)/2,
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-(cross_length+extra_outer_cross_height)/2,
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stem_inset
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])
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cube([ // the base of the stem, the part the cruciform digs into
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cross_length+extra_outer_cross_width,
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cross_length+extra_outer_cross_height,
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50
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]
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);
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]);
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} else {
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cylinder(
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d = cross_length+extra_outer_cross_height,
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h = 50
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);
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}
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if (has_brim == 1){ cylinder(r=brim_radius,h=brim_depth); }
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}
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//the cross part of the steam
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translate([0,0,(cross_depth)/2 + stem_inset]){
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cube([vertical_cross_width,cross_length+extra_vertical_cross_length,cross_depth], center=true );//remove +2 to print with cross
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cube([vertical_cross_width,cross_length+extra_vertical_cross_length,cross_depth], center=true );
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cube([cross_length,horizontal_cross_width,cross_depth], center=true );
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}
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}
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@ -355,16 +357,17 @@ module alps_stem(){
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translate([0,0,cross_depth/2 + stem_inset]){
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cube([width,height,cross_depth], center = true);
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}
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}
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//whole connector
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module connector(key_profile,has_brim){
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difference(){
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//TODO can I really not do an array index here?
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if(stem_profile==0) cherry_stem();
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if(stem_profile==1) alps_stem();
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translate([-unit * stem_offset, 0, 0])
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union(){
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if(stem_profile == 0 || stem_profile == 2) cherry_stem();
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if(stem_profile == 1) alps_stem();
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}
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inside(key_profile);
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}
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}
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@ -404,6 +407,7 @@ module shape(key_profile, thickness){
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}
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//conicalish clipping shape to trim things off the outside of the keycap
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// literally just a key with height of 2 to make sure nothing goes awry with dishing etc
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module outside(key_profile, thickness){
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difference(){
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cube([100000,100000,100000],center = true);
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@ -429,10 +433,26 @@ module shape_hull(key_profile, thickness, modifier){
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roundedRect([bottom_key_width*key_length - thickness -top_key_width_difference * modifier,bottom_key_height - thickness -top_key_height_difference * modifier,.001],1.5);
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}
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}
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//end libraries
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//dish selector
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module dish(key_profile){ //this thing is a monster
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dish_type = key_profile[7];
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if(dish_type == 0){ // cylindrical dish
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cylindrical_dish(key_profile);
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}
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else if (dish_type == 1) { // spherical dish
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spherical_dish(key_profile);
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}
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else if (dish_type == 2){ // SIDEWAYS cylindrical dish - used for spacebar
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sideways_cylindrical_dish(key_profile);
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}
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else if (dish_type == 3){
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// no dish
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}
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}
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module cylindrical_dish(key_profile){
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// names, so I don't go crazy
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total_key_width = key_profile[0];
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total_key_height = key_profile[1];
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@ -450,70 +470,105 @@ module dish(key_profile){ //this thing is a monster
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key_width = total_key_width * key_length - width_difference;
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key_height = total_key_height - height_difference;
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if(dish_type == 0){ // cylindrical dish
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/* we do some funky math here
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* basically you want to have the dish "dig in" to the keycap x millimeters
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* in order to do that you have to solve a small (2d) system of equations
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* where the chord of the spherical cross section of the dish is
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* the width of the keycap.
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*/
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// the distance you have to move the dish up so it digs in dish_depth millimeters
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chord_length = (pow(key_width, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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//the radius of the dish
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rad = (pow(key_width, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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/* we do some funky math here
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* basically you want to have the dish "dig in" to the keycap x millimeters
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* in order to do that you have to solve a small (2d) system of equations
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* where the chord of the spherical cross section of the dish is
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* the width of the keycap.
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*/
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// the distance you have to move the dish up so it digs in dish_depth millimeters
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chord_length = (pow(key_width, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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//the radius of the dish
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rad = (pow(key_width, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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if (inverted_dish == 1){
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([90-top_tilt,0,0])
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translate([0,-chord_length,0])
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cylinder(h=100,r=rad, $fn=1024, center=true);
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}
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else{
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([90-top_tilt,0,0])
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translate([0,chord_length,0])
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cylinder(h=100,r=rad, $fn=1024, center=true);
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}
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if (inverted_dish == 1){
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([90-top_tilt,0,0])
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translate([0,-chord_length,0])
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cylinder(h=100,r=rad, $fn=1024, center=true);
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}
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else if (dish_type == 1) { // spherical dish
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//same thing here, but we need the corners to just touch - so we have to find the hypotenuse of the top
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chord = pow((pow(key_width,2) + pow(key_height, 2)),0.5); //getting diagonal of the top
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// the distance you have to move the dish up so it digs in dish_depth millimeters
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chord_length = (pow(chord, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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//the radius of the dish
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rad = (pow(chord, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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if (inverted_dish == 1){
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([-top_tilt,0,0])
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translate([0,0,-chord_length])
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sphere(r=rad, $fn=256);
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}
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else{
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([-top_tilt,0,0])
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translate([0,0,chord_length])
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sphere(r=rad, $fn=256);
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}
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else{
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([90-top_tilt,0,0])
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translate([0,chord_length,0])
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cylinder(h=100,r=rad, $fn=1024, center=true);
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}
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else if (dish_type == 2){// SIDEWAYS cylindrical dish - used for spacebar
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chord_length = (pow(key_height, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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rad = (pow(key_height, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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}
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if (inverted_dish == 1){
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([90,top_tilt,90])
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translate([0,-chord_length,0])
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cylinder(h=key_width + 20,r=rad, $fn=1024, center=true); // +20 just cuz
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}
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else{
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([90,top_tilt,90])
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translate([0,chord_length,0])
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cylinder(h=key_width + 20,r=rad, $fn=1024, center=true);
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}
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module spherical_dish(key_profile){
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// names, so I don't go crazy
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total_key_width = key_profile[0];
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total_key_height = key_profile[1];
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width_difference = key_profile[2];
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height_difference = key_profile[3];
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total_depth = key_profile[4];
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top_tilt = key_profile[5];
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top_skew = key_profile[6];
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dish_type = key_profile[7];
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dish_depth = key_profile[8];
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dish_skew_x = key_profile[9];
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dish_skew_y = key_profile[10];
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//dependant variables
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key_width = total_key_width * key_length - width_difference;
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key_height = total_key_height - height_difference;
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//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
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chord = pow((pow(key_width,2) + pow(key_height, 2)),0.5); //getting diagonal of the top
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// the distance you have to move the dish up so it digs in dish_depth millimeters
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chord_length = (pow(chord, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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//the radius of the dish
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rad = (pow(chord, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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if (inverted_dish == 1){
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([-top_tilt,0,0])
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translate([0,0,-chord_length])
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sphere(r=rad, $fn=256);
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}
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else{
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([-top_tilt,0,0])
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translate([0,0,chord_length])
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sphere(r=rad, $fn=256);
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}
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}
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module sideways_cylindrical_dish(key_profile){
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// names, so I don't go crazy
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total_key_width = key_profile[0];
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total_key_height = key_profile[1];
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width_difference = key_profile[2];
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height_difference = key_profile[3];
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total_depth = key_profile[4];
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top_tilt = key_profile[5];
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top_skew = key_profile[6];
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dish_type = key_profile[7];
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dish_depth = key_profile[8];
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dish_skew_x = key_profile[9];
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dish_skew_y = key_profile[10];
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//dependant variables
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key_width = total_key_width * key_length - width_difference;
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key_height = total_key_height - height_difference;
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chord_length = (pow(key_height, 2) - 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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rad = (pow(key_height, 2) + 4 * pow(dish_depth, 2)) / (8 * dish_depth);
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if (inverted_dish == 1){
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([90,top_tilt,90])
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translate([0,-chord_length,0])
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cylinder(h=key_width + 20,r=rad, $fn=1024, center=true); // +20 just cuz
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}
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else{
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translate([dish_skew_x, top_skew + dish_skew_y, total_depth])
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rotate([90,top_tilt,90])
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translate([0,chord_length,0])
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cylinder(h=key_width + 20,r=rad, $fn=1024, center=true);
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}
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}
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@ -534,4 +589,58 @@ module key(key_profile){
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}
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// ACTUAL OUTPUT
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key(key_profiles[key_profile]);
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// non-implemented ISO enter test stuff
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// NOT 3D, NOT CENTERED
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module fakeISOEnter(){
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z = 0.001;
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radius = 2;
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unit = 18.16; // TODO probably not
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pointArray = [
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[0 + radius,0 + radius],
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[unit*1.25 - radius, 0 + radius],
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[unit*1.25 - radius, unit*2 - radius],
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[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();
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue