mirror of
git://projects.qi-hardware.com/wernermisc.git
synced 2024-12-25 13:23:20 +02:00
213 lines
3.9 KiB
OpenSCAD
213 lines
3.9 KiB
OpenSCAD
epsilon = 0.01;
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but_top_x = 10;
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but_top_y = but_top_x+5;
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but_top_z = 1.5;
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but_corner_r = 2;
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but_base_border = 1;
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but_base_x = but_top_x+2*but_base_border;
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but_base_y = but_top_y+2*but_base_border;
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but_base_z = 0.5;
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but_fillet_r = 0.4;
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but_chamfer_r = 0.2;
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$fn = 40;
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/* ----- Basic solids ------------------------------------------------------ */
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module torus(r0, r1)
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{
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rotate_extrude()
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translate([r0, 0, 0])
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circle(r = r1);
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}
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/* ----- Helper elements for fillets --------------------------------------- */
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module fillet_line(x, r)
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{
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translate([-x/2, 0, 0])
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difference() {
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cube([x, r, r]);
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translate([0, r, r])
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rotate([0, 90, 0])
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translate([0, 0, -epsilon])
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cylinder(h = x+2*epsilon, r = r);
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}
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}
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module fillet_circle(r, fillet_r)
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{
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difference() {
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cylinder(h = fillet_r, r = r+fillet_r);
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translate([0, 0, fillet_r])
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torus(r+fillet_r, fillet_r);
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}
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}
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/* ----- Helper elements for chamfers -------------------------------------- */
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module chamfer_line(x, r)
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{
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translate([-x/2, -r, -r])
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difference() {
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cube([x, r+epsilon, r+epsilon]);
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rotate([0, 90, 0])
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translate([0, 0, -epsilon])
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cylinder(h = x+2*epsilon, r = r);
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}
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}
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module chamfer_circle(r, fillet_r)
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{
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difference() {
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translate([-r-epsilon, -r-epsilon, -fillet_r])
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cube([2*(r+epsilon), 2*(r+epsilon), fillet_r+epsilon]);
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translate([0, 0, -fillet_r])
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cylinder(h = fillet_r, r = r-fillet_r);
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translate([0, 0, -fillet_r])
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torus(r-fillet_r, fillet_r);
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}
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}
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/* ----- Box with rounded corners ------------------------------------------ */
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module rbox_core(x, y, z, r)
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{
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union() {
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translate([0, 0, z/2])
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cube([x-2*r, y, z], center = true);
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translate([0, 0, z/2])
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cube([x, y-2*r, z], center = true);
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}
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}
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module rbox(x, y, z, r)
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{
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union() {
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rbox_core(x, y, z, r);
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for (dx = [-1, 1]) {
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for (dy = [-1, 1]) {
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translate([dx*(x/2-r), dy*(y/2-r), 0])
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cylinder(h = z, r = r);
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}
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}
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}
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}
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module rbox_fillet_bottom(x, y, z, r, fillet_r)
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{
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union() {
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for (a = [0, 180]) {
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rotate([0, 0, a])
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translate([0, y/2, 0])
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fillet_line(x-2*r, fillet_r);
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rotate([0, 0, a+90])
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translate([0, x/2, 0])
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fillet_line(y-2*r, fillet_r);
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}
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for (dx = [-1, 1]) {
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for (dy = [-1, 1]) {
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translate([dx*(x/2-r), dy*(y/2-r), 0])
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fillet_circle(r, fillet_r);
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}
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}
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}
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}
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module rbox_chamfer_top_corners(x, y, z, r, chamfer_r)
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{
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difference() {
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union() {
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for (dx = [-1, 1]) {
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for (dy = [-1, 1]) {
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translate([dx*(x/2-r), dy*(y/2-r), z])
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chamfer_circle(r, chamfer_r);
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}
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}
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}
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rbox_core(x-epsilon, y-epsilon, z, r);
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}
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}
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module rbox_chamfer_top(x, y, z, r, chamfer_r)
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{
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union() {
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for (a = [0, 180]) {
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rotate([0, 0, a])
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translate([0, y/2, z])
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chamfer_line(x-2*r, chamfer_r);
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rotate([0, 0, a+90])
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translate([0, x/2, z])
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chamfer_line(y-2*r, chamfer_r);
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}
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rbox_chamfer_top_corners(x, y, z, r, chamfer_r);
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}
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}
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module rbox_chamfer_bottom(x, y, z, r, chamfer_r)
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{
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rotate([180, 0, 0])
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translate([0, 0, -z])
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rbox_chamfer_top(x, y, z, r, chamfer_r);
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}
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/* ----- Button ------------------------------------------------------------ */
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module button_top()
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{
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union() {
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difference() {
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rbox(but_top_x, but_top_y, but_top_z, but_corner_r);
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rbox_chamfer_top(but_top_x, but_top_y, but_top_z, but_corner_r, but_chamfer_r);
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}
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rbox_fillet_bottom(but_top_x, but_top_y, but_top_z,
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but_corner_r, but_fillet_r);
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}
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}
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module button_base()
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{
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translate([0, 0, -but_base_z])
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difference() {
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rbox(but_base_x, but_base_y, but_base_z, but_corner_r);
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rbox_chamfer_top(but_base_x, but_base_y, but_base_z,
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but_corner_r, but_chamfer_r);
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rbox_chamfer_bottom(but_base_x, but_base_y, but_base_z,
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but_corner_r, but_chamfer_r);
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}
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}
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module button()
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{
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union() {
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button_top();
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button_base();
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}
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}
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button();
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