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42 lines
803 B
Markdown
42 lines
803 B
Markdown
# triangulate
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Given a 2D shape. This function performs a simple polygon triangulation algorithm and returns the indices of each triangle.
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**Since:** 1.3.
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## Parameters
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- `shape_pts` : The shape points.
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- `epsilon` : An upper bound on the relative error due to rounding in floating point arithmetic. Default to 0.0001.
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## Examples
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use <triangulate.scad>;
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shape = [
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[0, 0],
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[10, 0],
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[12, 5],
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[5, 10],
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[10, 15],
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[0, 20],
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[-5, 18],
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[-18, 3],
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[-4, 10]
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];
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tris = triangulate(shape);
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difference() {
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polygon(shape);
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for(tri = tris) {
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offset(-.2)
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polygon([for(idx = tri) shape[idx]]);
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}
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}
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