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/*
* OpenSCAD Shapes Library (www.openscad.org)
* Copyright (C) 2009 Catarina Mota
*
* License: LGPL 2.1 or later
*/
//box(width, height, depth);
//roundedBox(width, height, depth, factor);
//cone(height, radius);
//oval(width, height, depth);
//tube(height, radius, wall);
//ovalTube(width, height, depth, wall);
//hexagon(height, depth);
//octagon(height, depth);
//dodecagon(height, depth);
//hexagram(height, depth);
//rightTriangle(adjacent, opposite, depth);
//equiTriangle(side, depth);
//12ptStar(height, depth);
//----------------------
// size is a vector [w, h, d]
module box(size) {
cube(size, true);
}
// size is a vector [w, h, d]
module roundedBox(size, radius) {
cube(size - [2*radius,0,0], true);
cube(size - [0,2*radius,0], true);
for (x = [radius-size[0]/2, -radius+size[0]/2],
y = [radius-size[1]/2, -radius+size[1]/2]) {
translate([x,y,0]) cylinder(r=radius, h=size[2], center=true);
}
}
module cone(height, radius, center = false) {
cylinder(height, radius, 0, center);
}
module oval(w,h, height, center = false) {
scale([1, h/w, 1]) cylinder(h=height, r=w, center=center);
}
// wall is wall thickness
module tube(height, radius, wall, center = false) {
difference() {
cylinder(h=height, r=radius, center=center);
cylinder(h=height, r=radius-wall, center=center);
}
}
// wall is wall thickness
module ovalTube(height, rx, ry, wall, center = false) {
difference() {
scale([1, ry/rx, 1]) cylinder(h=height, r=rx, center=center);
scale([(rx-wall)/rx, (ry-wall)/rx, 1]) cylinder(h=height, r=rx, center=center);
}
}
// size is the XY plane size, height in Z
module hexagon(size, height) {
boxWidth = size/1.75;
for (r = [-60, 0, 60]) rotate([0,0,r]) cube([boxWidth, size, height], true);
}
// size is the XY plane size, height in Z
module octagon(size, height) {
intersection() {
cube([size, size, height], true);
rotate([0,0,45]) cube([size, size, height], true);
}
}
// size is the XY plane size, height in Z
module dodecagon(size, height) {
intersection() {
hexagon(size, height);
rotate([0,0,90]) hexagon(size, height);
}
}
// size is the XY plane size, height in Z
module hexagram(size, height) {
boxWidth=size/1.75;
for (v = [[0,1],[0,-1],[1,-1]]) {
intersection() {
rotate([0,0,60*v[0]]) cube([size, boxWidth, height], true);
rotate([0,0,60*v[1]]) cube([size, boxWidth, height], true);
}
}
}
module rightTriangle(adjacent, opposite, height) {
difference() {
translate([-adjacent/2,opposite/2,0]) cube([adjacent, opposite, height], true);
translate([-adjacent,0,0]) {
rotate([0,0,atan(opposite/adjacent)]) dislocateBox(adjacent*2, opposite, height);
}
}
}
module equiTriangle(side, height) {
difference() {
translate([-side/2,side/2,0]) cube([side, side, height], true);
rotate([0,0,30]) dislocateBox(side*2, side, height);
translate([-side,0,0]) {
rotate([0,0,60]) dislocateBox(side*2, side, height);
}
}
}
module 12ptStar(size, height) {
starNum = 3;
starAngle = 360/starNum;
for (s = [1:starNum]) {
rotate([0, 0, s*starAngle]) cube([size, size, height], true);
}
}
//-----------------------
//MOVES THE ROTATION AXIS OF A BOX FROM ITS CENTER TO THE BOTTOM LEFT CORNER
//FIXME: Why are the dimensions changed?
// why not just translate([0,0,-d/2]) cube([w,h,d]);
module dislocateBox(w,h,d) {
translate([w/2,h,0]) {
difference() {
cube([w, h*2, d+1]);
translate([-w,0,0]) cube([w, h*2, d+1]);
}
}
}
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