- Make distinction between single shape and list of shapes

- Store shapes in std::vectors rather than TopoDS_Compounds
- Apply transformation only on triangulated meshes or when processing openings
- Store transformations in a gp_GTrsf to allow arbitrary transformations
- Support IfcCartesianTransformationOperator3DnonUniform
- TODO: Create proper class for ShapeList
- TODO: Carefully check for null pointers returned from IfcGeom::convert_shape()

src/ifcgeom/IfcRegisterConvertShape.h

@@ -3,8 +3,8 @@
 	if ( l->is(T::Class()) ) { \
 		try { \
 			if ( convert((T*)l,r) ) { \
-				Cache::Shape[l->entity->id()] = r; \
-				return true; \
+				Cache::Shape[id] = r; \
+				return &(Cache::Shape[id]); \
 			} \
 		} catch(...) {  } \
 		Ifc::LogMessage("Error","Failed to convert:",l->entity); \