bugfix the three vertices are collinear when converting a polygon to a triangle.
Signed-off-by: Jackie9527 <80555200+Jackie9527@users.noreply.github.com>pull/4979/head
parent
90333340d6
commit
f7f54036f2
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@ -468,6 +468,21 @@ bool TriangulateProcess::TriangulateMesh( aiMesh* pMesh)
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continue;
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continue;
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}
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}
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// Skip when three point is in a line
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aiVector2D left = *pnt0 - *pnt1;
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aiVector2D right = *pnt2 - *pnt1;
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left.Normalize();
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right.Normalize();
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auto mul = left * right;
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// if the angle is 0 or 180
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if (std::abs(mul - 1.f) < ai_epsilon || std::abs(mul + 1.f) < ai_epsilon) {
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// skip this ear
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ASSIMP_LOG_WARN("Skip a ear, due to its angle is near 0 or 180.");
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continue;
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}
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// and no other point may be contained in this triangle
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// and no other point may be contained in this triangle
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for ( tmp = 0; tmp < max; ++tmp) {
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for ( tmp = 0; tmp < max; ++tmp) {
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