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Fix of [2.3.0-alpha4] Crash - several models cause crash when slicing #5208

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Fixed some issues in internal anchors of the Adaptive Cubic infill.
The ugly and dangerous implicit casting operators in Line, MultiPoint,
Polyline and Polygon were made explicit.
This commit is contained in:
Vojtech Bubnik 2020-11-24 16:00:46 +01:00
parent 10c41290fd
commit 62bdc192d8
25 changed files with 237 additions and 110 deletions
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21
src/libslic3r/ExPolygon.cpp
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@ -350,23 +350,10 @@ void ExPolygon::get_trapezoids2(Polygons* polygons) const
// find trapezoids by looping from first to next-to-last coordinate
for (std::vector<coord_t>::const_iterator x = xx.begin(); x != xx.end()-1; ++x) {
coord_t next_x = *(x + 1);
if (*x == next_x) continue;
// build rectangle
Polygon poly;
poly.points.resize(4);
poly[0](0) = *x;
poly[0](1) = bb.min(1);
poly[1](0) = next_x;
poly[1](1) = bb.min(1);
poly[2](0) = next_x;
poly[2](1) = bb.max(1);
poly[3](0) = *x;
poly[3](1) = bb.max(1);
// intersect with this expolygon
// append results to return value
polygons_append(*polygons, intersection(poly, to_polygons(*this)));
if (*x != next_x)
// intersect with rectangle
// append results to return value
polygons_append(*polygons, intersection({ { { *x, bb.min.y() }, { next_x, bb.min.y() }, { next_x, bb.max.y() }, { *x, bb.max.y() } } }, to_polygons(*this)));
}
}