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Bugfix: when the Voronoi diagram contained very large coordinates we need to check whether they are greater than our allowed range and consider the Voronoi edges infinite in those cases, in order to prevent overflows.

Browse Source 
https://github.com/alexrj/Slic3r/issues/3776
https://github.com/alexrj/Slic3r/commit/9ad1360e445cd3043c4dc30ccad64b82b914f952
This commit is contained in:
bubnikv
2017-03-24 09:32:30 +01:00
parent 6162670bbd
commit 0dae43e4bc
3 changed files with 17 additions and 9 deletions
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xs/src/libslic3r/Geometry.cpp
+7
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@@ -983,6 +983,13 @@ MedialAxis::process_edge_neighbors(const VD::edge_type* edge, ThickPolyline* pol
bool
MedialAxis::validate_edge(const VD::edge_type* edge)
{
// prevent overflows and detect almost-infinite edges
if (std::abs(edge->vertex0()->x()) > double(CLIPPER_MAX_COORD_UNSCALED) ||
std::abs(edge->vertex0()->y()) > double(CLIPPER_MAX_COORD_UNSCALED) ||
std::abs(edge->vertex1()->x()) > double(CLIPPER_MAX_COORD_UNSCALED) ||
std::abs(edge->vertex1()->y()) > double(CLIPPER_MAX_COORD_UNSCALED))
return false;
// construct the line representing this edge of the Voronoi diagram
const Line line(
Point( edge->vertex0()->x(), edge->vertex0()->y() ),