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Boolean Path/Region Functions #3288

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Boolean Path/Region Functions #3288

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e438692
Added union_paths(), difference_paths(), intersect_paths(), minkowski…
revarbat Apr 19, 2020
01babed
Merge branch 'master' of https://github.com/openscad/openscad into bo…
revarbat Apr 19, 2020
a7c3d5a
Fixed issues found by CI. That'll teach me to do a make clean and ma…
revarbat Apr 19, 2020
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13 changes: 13 additions & 0 deletions src/clipper-utils.cc
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Expand Up @@ -91,6 +91,19 @@ namespace ClipperUtils {
return result;
}

int pointInRegion(const Polygon2d &polygon, double x, double y)
{
ClipperLib::IntPoint pt(x*CLIPPER_SCALE, y*CLIPPER_SCALE);
int result = 0;
for (const auto& oline : polygon.outlines()) {
int res = ClipperLib::PointInPolygon(pt, fromOutline2d(oline,true));
if (res < -1) return -1;
if (res > 0) result = 1 - result;
}
return result;
}


/*!
Apply the clipper operator to the given paths.

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1 change: 1 addition & 0 deletions src/clipper-utils.h
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Expand Up @@ -18,5 +18,6 @@ namespace ClipperUtils {
Polygon2d *applyMinkowski(const std::vector<const Polygon2d*> &polygons);
Polygon2d *apply(const std::vector<const Polygon2d*> &polygons, ClipperLib::ClipType);
Polygon2d *apply(const std::vector<ClipperLib::Paths> &pathsvector, ClipperLib::ClipType);
int pointInRegion(const Polygon2d &polygon, double x, double y);

};