private boolean getNaturalNabors(float x, float y) { _mesh.clearNodeMarks(); _mesh.clearTriMarks(); _nodeList.clear(); _triList.clear(); TriMesh.PointLocation pl = _mesh.locatePoint(x,y); if (pl.isOutside()) return false; addTri(x,y,pl.tri()); return true; } private void addTri(double xp, double yp, TriMesh.Tri tri) {