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Important performance optimization: union Thicken() polygons individually, not en masse

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This commit is contained in:
David Kaufman
2024-01-08 00:52:19 -05:00
parent dddd13f7c0
commit 41c1206d80
1 changed files with 6 additions and 3 deletions
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9
src/Mod/Path/libarea/AreaClipper.cpp
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@@ -253,11 +253,15 @@ static void OffsetSpansWithObrounds(const CArea& area, TPolyPolygon &pp_new, dou
{
Clipper c;
c.StrictlySimple(CArea::m_clipper_simple);
pp_new.clear();
for(std::list<CCurve>::const_iterator It = area.m_curves.begin(); It != area.m_curves.end(); It++)
{
c.Clear();
c.AddPaths(pp_new, ptSubject, true);
pp_new.clear();
pts_for_AddVertex.clear();
const CCurve& curve = *It;
const CVertex* prev_vertex = NULL;
for(std::list<CVertex>::const_iterator It2 = curve.m_vertices.begin(); It2 != curve.m_vertices.end(); It2++)
@@ -278,10 +282,9 @@ static void OffsetSpansWithObrounds(const CArea& area, TPolyPolygon &pp_new, dou
}
prev_vertex = &vertex;
}
c.Execute(ctUnion, pp_new, pftNonZero, pftNonZero);
}
pp_new.clear();
c.Execute(ctUnion, pp_new, pftNonZero, pftNonZero);
// reverse all the resulting polygons
TPolyPolygon copy = pp_new;