- aA = aNormal->x();
- aB = aNormal->y();
- aC = aNormal->z();
- aD = 0;
-
- aPlane = boost::shared_ptr<GeomAPI_Pln>(new GeomAPI_Pln(aA, aB, aC, aD));
+ if (aNormal && anOrigin) {
+ double adX = aNormal->x();
+ double adY = aNormal->y();
+ double adZ = aNormal->z();
+
+ if ( (adX != 0) || (adY != 0) || (adZ != 0) ) { // Plane is valid
+ double aX = anOrigin->x();
+ double aY = anOrigin->y();
+ double aZ = anOrigin->z();
+ gp_Pln aPln(gp_Pnt(aX, aY, aZ), gp_Dir(adX, adY, adZ));
+ double aA, aB, aC, aD;
+ aPln.Coefficients(aA, aB, aC, aD);
+ aPlane = std::shared_ptr<GeomAPI_Pln>(new GeomAPI_Pln(aA, aB, aC, aD));
+ }
+ }