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20 lines
502 B
OpenSCAD
20 lines
502 B
OpenSCAD
/**
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* in_polyline.scad
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*
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* @copyright Justin Lin, 2019
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* @license https://opensource.org/licenses/lgpl-3.0.html
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*
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* @see https://openhome.cc/eGossip/OpenSCAD/lib2x-in_polyline.html
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*
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**/
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use <__comm__/__in_line.scad>;
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function in_polyline(line_pts, pt, epsilon = 0.0001) =
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let(
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leng = len(line_pts),
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iend = leng - 1,
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maybe_last = [for(i = 0; i < iend && !__in_line([line_pts[i], line_pts[i + 1]], pt, epsilon); i = i + 1) i][leng - 2]
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)
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is_undef(maybe_last);
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