Remove a potential source of crash in triangle interpolator

git-svn-id: http://svn.osgeo.org/qgis/trunk@10971 c8812cc2-4d05-0410-92ff-de0c093fc19c
qgis · Jun 23, 2009 · c4162aa · c4162aa
1 parent a4fbf95
commit c4162aa
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/plugins/interpolation/DualEdgeTriangulation.cc b/src/plugins/interpolation/DualEdgeTriangulation.cc
@@ -1121,6 +1121,10 @@ bool DualEdgeTriangulation::getTriangle( double x, double y, Point3D* p1, Point3
       int ptnr1 = mHalfEdge[edge1]->getPoint();
       int ptnr2 = mHalfEdge[edge2]->getPoint();
       int ptnr3 = mHalfEdge[edge3]->getPoint();
+      if(ptnr1 == -1 || ptnr2 == -1 || ptnr3 == -1)
+      {
+        return false;
+      }
       p1->setX( mPointVector[ptnr1]->getX() );
       p1->setY( mPointVector[ptnr1]->getY() );
       p1->setZ( mPointVector[ptnr1]->getZ() );