67 lines
2.1 KiB
OpenSCAD
67 lines
2.1 KiB
OpenSCAD
//! general-purpose "primitives" lacking from the OpenSCAD builtins
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include <defaults.scad>
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/// cylinder() but with the axis on the x axis instead of the z axis.
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/// and where `center=false` behaves like for `cube(center=false)`,
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/// i.e. circle center is not at (0, 0) but (r, r)
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module cylinderX(d=undef, r=undef, h=undef, center=false) {
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_translateIf(!center, [0, _toRad(r=r, d=d), _toRad(r=r, d=d)]) {
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rotate(a=[0,-90,0]) cylinder(d=d, r=r, h=h, center=center);
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}
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}
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/// cylinder() but with the axis on the y axis instead of the z axis
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/// and where `center=false` behaves like for `cube(center=false)`,
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/// i.e. circle center is not at (0, 0) but (r, r)
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module cylinderY(d=undef, r=undef, h=undef, center=false) {
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_translateIf(!center, [_toRad(r=r, d=d), 0, _toRad(r=r, d=d)]) {
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rotate(a=[-90,0,0]) cylinder(d=d, r=r, h=h, center=center);
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}
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}
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/// cylinder() where `center=false` behaves like for `cube(center=false)`,
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/// i.e. circle center is not at (0, 0) but (r, r)
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module cylinderZ(d=undef, r=undef, h=undef, center=false) {
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_translateIf(!center, [_toRad(r=r, d=d), _toRad(r=r, d=d), 0]) {
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cylinder(d=d, r=r, h=h, center=center);
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}
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}
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// a 2d-cylinder extruded along the x-axis
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module pillX(dimX, dimY, dimZ, tol=tol, center=false) {
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diam = min(dimY, dimZ) - tol;
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minkowski() {
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cube([dimX/2, dimY-diam, dimZ-diam], center=center);
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cylinderX(d=diam, h=dimX/2, center=center);
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}
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}
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// a 2d-cylinder extruded along the x-axis
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module pillY(dimX, dimY, dimZ, tol=tol, center=false) {
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diam = min(dimX, dimZ) - tol;
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minkowski() {
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cube([dimX-diam, dimY/2, dimZ-diam], center=center);
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cylinderY(d=diam, h=dimY/2, center=center);
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}
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}
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// a 2d-cylinder extruded along the z-axis
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module pillZ(dimX, dimY, dimZ, tol=tol, center=false) {
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diam = min(dimX, dimY) - tol;
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minkowski() {
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cube([dimX-diam, dimY-diam, dimZ/2], center=center);
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cylinderZ(d=diam, h=dimZ/2, center=center);
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}
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}
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function _toRad(r=undef, d=undef) = (r != undef) ? r : d/2;
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module _translateIf(cond, amount) {
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if (cond) {
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translate(amount) children();
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} else {
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children();
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}
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}
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