Added: Information in mesh_frame on if STs/Normals are present, misc changes for PR #65 code review.

src/engine/models/mesh_frame.cpp

@@ -25,6 +25,8 @@ MeshFrame::MeshFrame()
     _areVerticesAllocated = false;
     _areNormalsAllocated = false;
     _areMaterialsAllocated = false;
+    _areSTsPresent = false;
+    _areNormalsPresent = false;
 }
 
 MeshFrame::~MeshFrame()