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60 lines
1.5 KiB
Markdown
60 lines
1.5 KiB
Markdown
# voronoi3d
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Create a 3D version of [Voronoi diagram](https://en.wikipedia.org/wiki/Voronoi_diagram). The initial space for each cell is calculated automatically from the given points by the following code:
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xs = [for(p = points) p[0]];
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ys = [for(p = points) abs(p[1])];
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zs = [for(p = points) abs(p[2])];
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space_size = max([(max(xs) - min(xs) / 2), (max(ys) - min(ys)) / 2, (max(zs) - min(zs)) / 2]);
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// cube([space_size, space_size * 2, space_size * 2]);
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The preview or rendering of 3D Voronoi is slow. If you want to use this module, render and export the 3D Voronoi model first. Then, `import` the model to do what you want.
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**Since:** 1.3.
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## Parameters
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- `points` : Points for each cell.
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- `spacing` : Distance between cells. Default to 1.
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## Examples
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use <voronoi3d.scad>;
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r = 30;
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zas = rands(0, 359, 12);
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yas = rands(0, 179, 12);
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points = [
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for(i = [0:len(zas) - 1])
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[
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r * cos(yas[i]) * cos(zas[i]),
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r * cos(yas[i]) * sin(zas[i]),
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r * sin(yas[i])
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]
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];
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#for(pt = points) {
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translate(pt) cube(1);
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}
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intersection() {
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sphere(r);
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voronoi3d(points);
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}
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If you render, export and save the previous model as `voronoi3d.stl`, the following code will generate a Voronoi sphere.
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r = 30;
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thickness = 2;
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difference() {
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sphere(r);
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scale(1.01) import("voronoi3d.stl");
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sphere(r - thickness);
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}
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