+ fix issues with force constraint

2014-10-10 17:42:33 +02:00
parent bb6b2ec5c5
commit ee6cb252fa
3 changed files with 5 additions and 4 deletions
--- a/src/Mod/Fem/App/FemConstraint.cpp
+++ b/src/Mod/Fem/App/FemConstraint.cpp
@@ -309,7 +309,10 @@ const Base::Vector3d Constraint::getDirection(const App::PropertyLinkSub &direct
        return Base::Vector3d(0,0,0);
    std::string subName = names.front();
    Part::Feature* feat = static_cast<Part::Feature*>(obj);
-    TopoDS_Shape sh = feat->Shape.getShape().getSubShape(subName.c_str());
+    const Part::TopoShape& shape = feat->Shape.getShape();
+    if (shape.isNull())
+        return Base::Vector3d(0,0,0);
+    TopoDS_Shape sh = shape.getSubShape(subName.c_str());
    gp_Dir dir;

    if (sh.ShapeType() == TopAbs_FACE) {