Generating a Rose Window

 1 // title      : Rose Window Generator
 2 // license    : MIT License
 3 // revision   : 0.1.0
 4 // tags       : Rose_Window
 5 // file       : rose_window.jscad
 6 function double_circle(radius1, radius2){
 7     return circle({r:radius1}).center()
 8         .subtract(circle({r:radius2}).center());
 9 }
10 
11 function ray(radius, width, divisions, invert){
12   rays = [];
13   for (i=0; i < divisions; i++){
14       rays.push(CAG.rectangle({corner1: [0, -width/2], corner2: [radius,width/2]})
15                    .rotateZ(i*360/divisions));
16   }
17   return union(rays);
18 }
19 
20 function double_rose(radius, circle_radius, circle_inner_radius, divisions){
21   var rose = new CAG();
22   for (i=0;i<divisions;i++){
23     rose = rose.union(double_circle(circle_radius, circle_inner_radius)
24         .translate([radius - circle_radius,0]).rotateZ(i*360/divisions));
25   }
26   return rose;
27 }
28 
29 function rose_window(radius, divisions, inner_radius, invert){
30   var outside_circle = circle({r:radius}).center();
31   var rose = new CAG();
32   for (i=0;i<divisions;i++){
33     rose = rose.union(circle({r:(radius-inner_radius)/2}).center()
34         .translate([inner_radius + (radius-inner_radius)/2,0]))
35         .rotateZ(360/divisions);
36   }
37   if (invert === true){
38     rose = outside_circle.subtract(rose);
39   }
40   return rose;
41 }
42 function main() {
43     // still a manual process here, play around with values...
44     return double_circle(20,19)
45     //.subtract(rose_window(22,17, 18,true))
46     .union(double_rose(19.2,6,5.5,14))
47     //.union(rose_window(19,17, 12,false).rotateZ(360/17/2))
48     //.subtract(double_circle(14,9))
49     // .union(rose_window(15,3))
50     // .union(double_circle(13.5,12.5))
51     // .union(double_rose(10,5,4.5,7))
52     // .union(circle({r:5}).center())
53     // .union(ray(14, .5, 14))
54     // .subtract(circle({r:4}).center())
55     .scale(4)
56     // .subtract(rose_window(4, 3, 0, true).center().rotateZ(15))
57 }