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Fix #696. Account for multiple coincident edges when looking for naked edges.

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This commit is contained in:
phkahler 2020-09-12 17:21:20 -04:00
parent d8f5a8da32
commit e74185b639
1 changed files with 8 additions and 2 deletions
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6
src/mesh.cpp
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@ -971,10 +971,16 @@ void SKdNode::MakeCertainEdgesInto(SEdgeList *sel, EdgeKind how, bool coplanarIs
switch(how) { switch(how) {
case EdgeKind::NAKED_OR_SELF_INTER: case EdgeKind::NAKED_OR_SELF_INTER:
// there should be one anti-parllel edge
if(info.count != 1) { if(info.count != 1) {
// but there may be multiple parallel coincident edges
SKdNode::EdgeOnInfo parallelInfo = {};
FindEdgeOn(b, a, -cnt, coplanarIsInter, &parallelInfo);
if (info.count != parallelInfo.count) {
sel->AddEdge(a, b, auxA); sel->AddEdge(a, b, auxA);
if(leaky) *leaky = true; if(leaky) *leaky = true;
} }
}
if(info.intersectsMesh) { if(info.intersectsMesh) {
sel->AddEdge(a, b, auxA); sel->AddEdge(a, b, auxA);
if(inter) *inter = true; if(inter) *inter = true;