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Merge pull request #28 from piotrkania-here/check_ptr

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Check pointer before dereferencing it
This commit is contained in:
Jan Niklas Hasse
2021-04-26 17:02:23 +02:00
committed by GitHub
parent 444ee57d87 af36bac4db
commit 4a323bf6d5
1 changed files with 6 additions and 4 deletions
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8
poly2tri/sweep/sweep.cc
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@@ -65,13 +65,15 @@ void Sweep::FinalizationPolygon(SweepContext& tcx)
// Get an Internal triangle to start with
Triangle* t = tcx.front()->head()->next->triangle;
Point* p = tcx.front()->head()->next->point;
while (!t->GetConstrainedEdgeCW(*p)) {
while (t && !t->GetConstrainedEdgeCW(*p)) {
t = t->NeighborCCW(*p);
}
// Collect interior triangles constrained by edges
if (t) {
tcx.MeshClean(*t);
}
}
Node& Sweep::PointEvent(SweepContext& tcx, Point& point)
{
@@ -227,7 +229,7 @@ void Sweep::FillAdvancingFront(SweepContext& tcx, Node& n)
// Fill right holes
Node* node = n.next;
while (node->next) {
while (node && node->next) {
// if HoleAngle exceeds 90 degrees then break.
if (LargeHole_DontFill(node)) break;
Fill(tcx, *node);
@@ -237,7 +239,7 @@ void Sweep::FillAdvancingFront(SweepContext& tcx, Node& n)
// Fill left holes
node = n.prev;
while (node->prev) {
while (node && node->prev) {
// if HoleAngle exceeds 90 degrees then break.
if (LargeHole_DontFill(node)) break;
Fill(tcx, *node);