/
util.scad
199 lines (178 loc) · 6.51 KB
/
util.scad
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// Draw a torus that results from rotating
// a rounded square of size side_h,side_w and corner radius r
module torus(r, turn_r = 0, side_h = 0, side_w = 0) {
rotate_extrude(convexity = 2)
translate([r + turn_r + side_w, 0, 0]) hull() {
circle(r);
translate([0, -side_h, 0]) circle(r);
translate([-side_w, 0, 0]) circle(r);
translate([-side_w, -side_h, 0]) circle(r);
}
}
// TODO: Test quarterTorus
module quarterTorus(r, turn_r = 0, side_h = 0) {
total_r = turn_r + 2*r + side_h;
difference() {
torus(r, turn_r = turn_r, side_h = side_h);
translate(-total_r * [1, 1, 1]) cube(total_r * [2,1,2]);
translate(-[total_r, 0.1, total_r]) cube(total_r * [1,1,2]);
}
}
module fillet(h, r) {
difference() {
cube([h, r, r]);
translate([-0.1, r, r]) rotate([0, 90, 0]) cylinder(h = h+.2, r = r);
}
}
module elongatedCylinder(h, r, side = 0) {
linear_extrude(height=h, convexity=2) hull() {
circle(r);
translate([0,side,0]) circle(r);
}
}
module roundedCube4(dim, r, center=false) {
width = dim[0];
height = dim[1];
depth = dim[2];
centerx = (center[0] == undef ? center : center[0]);
centery = (center[1] == undef ? center : center[1]);
centerz = (center[2] == undef ? center : center[2]);
translate([centerx ? -width/2 : 0, centery ? -height/2 : 0, centerz ? -depth/2 : 0]) union() {
translate([0, r, 0]) cube([width, height-2*r, depth]);
translate([r, 0, 0]) cube([width-2*r, height, depth]);
for (xy = [[r, r],
[r, height-r],
[width-r, r],
[width-r, height-r]]) {
translate([xy[0], xy[1], 0]) cylinder(r = r, h = depth);
}
}
}
// TODO FIXME: dim[2] is not obeyed and top is filleted when dim[2] is >r but <2*r, because corner sphere diameter exceeds height (should be a half-sphere, in principle)
module roundedCube6(dim, r, center=false) {
width = dim[0];
height = dim[1];
depth = dim[2];
centerx = (center[0] == undef ? center : center[0]);
centery = (center[1] == undef ? center : center[1]);
centerz = (center[2] == undef ? center : center[2]);
translate([r - (centerx ? width/2 : 0), r - (centery ? height/2 : 0), r - (centerz ? depth/2 : 0)]) hull() {
// Edges
translate([0, 0, 0]) rotate([-90, 0, 0]) cylinder(h = height-2*r,r = r);
translate([width-2*r, 0, 0]) rotate([-90, 0, 0]) cylinder(h = height-2*r,r = r);
translate([0, 0, 0]) rotate([0, 90, 0]) cylinder(h = width-2*r, r = r);
translate([0, height-2*r, 0]) rotate([0, 90, 0]) cylinder(h = width-2*r, r = r);
translate([0, 0, 0]) cylinder(h = depth-r, r = r);
translate([width-2*r, 0, 0]) cylinder(h = depth-r, r = r);
translate([0, height-2*r, 0]) cylinder(h = depth-r, r = r);
translate([width-2*r, height-2*r, 0]) cylinder(h = depth-r, r = r);
// Corners
translate([0,0,0]) sphere(r);
translate([width-2*r, 0, 0]) sphere(r);
translate([0, height-2*r, 0]) sphere(r);
translate([width-2*r, height-2*r, 0]) sphere(r);
}
}
module roundedCube8(dim, r, center=false) {
width = dim[0];
height = dim[1];
depth = dim[2];
centerx = (center[0] == undef ? center : center[0]);
centery = (center[1] == undef ? center : center[1]);
centerz = (center[2] == undef ? center : center[2]);
translate([r - (centerx ? width/2 : 0), r - (centery ? height/2 : 0), r - (centerz ? depth/2 : 0)]) hull() {
// Edges (bottom)
translate([0, 0, 0]) rotate([-90, 0, 0]) cylinder(h = height-2*r,r = r);
translate([width-2*r, 0, 0]) rotate([-90, 0, 0]) cylinder(h = height-2*r,r = r);
translate([0, 0, 0]) rotate([0, 90, 0]) cylinder(h = width-2*r, r = r);
translate([0, height-2*r, 0]) rotate([0, 90, 0]) cylinder(h = width-2*r, r = r);
// Edges (vertical)
translate([0, 0, 0]) cylinder(h = depth-2*r, r = r);
translate([width-2*r, 0, 0]) cylinder(h = depth-3*r, r = r);
translate([0, height-2*r, 0]) cylinder(h = depth-2*r, r = r);
translate([width-2*r, height-2*r, 0]) cylinder(h = depth-2*r, r = r);
// Edges (top): not needed with hull()
// Corners (bottom)
translate([0, 0, 0]) sphere(r);
translate([width-2*r, 0, 0]) sphere(r);
translate([0, height-2*r, 0]) sphere(r);
translate([width-2*r, height-2*r, 0]) sphere(r);
// Corners (top)
translate([0, 0, depth-2*r]) sphere(r);
translate([width-2*r, 0, depth-2*r]) sphere(r);
translate([0, height-2*r, depth-2*r]) sphere(r);
translate([width-2*r, height-2*r, depth-2*r]) sphere(r);
}
}
module hollowCube(inner_dim, thickness) {
in_w = inner_dim[0];
in_h = inner_dim[1];
in_d = inner_dim[2];
t = thickness;
difference() {
translate([-t, -t, -t])
cube([in_w+2*t, in_h+2*t, in_d+t]);
cube([in_w, in_h, in_d+t+.2]);
}
}
// r is inner radius
module hollowCube4(inner_dim, thickness, r = -1) {
in_w = inner_dim[0];
in_h = inner_dim[1];
in_d = inner_dim[2];
t = thickness;
rad = (r < 0) ? thickness : r;
difference() {
translate([-t, -t, -t])
roundedCube4([in_w+2*t, in_h+2*t, in_d+t], 2*rad);
roundedCube4([in_w, in_h, in_d+t+.2], rad);
}
}
module hollowCube6(inner_dim, thickness, r = -1) {
in_w = inner_dim[0];
in_h = inner_dim[1];
in_d = inner_dim[2];
t = thickness;
rad = (r < 0) ? thickness : r;
difference() {
translate([-t, -t, -t])
roundedCube6([in_w+2*t, in_h+2*t, in_d+t], 2*rad);
roundedCube6([in_w, in_h, in_d+t+.2], rad);
}
}
module roundedSquare(dim, r, center=false) {
width = dim[0];
height = dim[1];
centerx = (center[0] == undef ? center : center[0]);
centery = (center[1] == undef ? center : center[1]);
translate([r - (centerx ? width/2 : 0), r - (centery ? height/2 : 0), 0]) hull() {
// Corners
translate([0, 0, 0]) circle(r = r);
translate([width-2*r, 0, 0]) circle(r = r);
translate([0, height-2*r, 0]) circle(r = r);
translate([width-2*r, height-2*r, 0]) circle(r = r);
}
}
module roundedCylinder(r, h, r2, center=false, fn2=18) {
rotate_extrude()
intersection() {
roundedSquare([2*r, h], r=r2, center=[true, center], $fn=fn2);
translate([0, -1-(center ? h/2 : 0), 0]) square([r+1, h+2]);
}
}
module standoffHole(r, thick, height, screw_depth = height) {
difference() {
cylinder(r=r+thick, h=height);
if (screw_depth < height) {
translate([0, 0, height-screw_depth]) cylinder(r=r, h=screw_depth+1);
} else {
translate([0, 0, -1]) cylinder(r=r, h=height+2);
}
}
}
module standoffPeg(r, height = 5, raise = 5, thick = 1.5) {
union() {
cylinder(r=r+thick, h=raise);
translate([0,0,raise-.05]) cylinder(r=r-0.2, h=height+.05);
}
}