initial camera-orientation; multiple materials in a single element; default material used from IfcGeom; improved triangle node data generation for OSG

src/qtviewer/ParseIfcFile.h

@@ -10,17 +10,6 @@
 #include "osg/ref_ptr"
 #include "osg/Geometry"
 
-struct VertexWithNormal {
-    osg::Vec3 vertex;
-    osg::Vec3 normal;
-};
-
-struct Triangle {
-    VertexWithNormal vn1;
-    VertexWithNormal vn2;
-    VertexWithNormal vn3;
-};
-
 class ParseIfcFile : public QObject
 {
 
@@ -34,12 +23,14 @@ public:
     );
 
 private:
-    std::vector<Triangle> createTriangles(
-            const std::vector<int>& elemFaces,
-            const std::vector<double>& elemVertices,
-            const std::vector<double>& elemNormals
-        );
-    osg::Vec4 getDefaultOsgDiffuseColor();
+    void buildTriangleNodes(
+        const std::vector<int>& fVertIds,
+        const std::vector<double>& elemVertices, 
+        const std::vector<double>& elemNormals,
+        size_t index,
+        osg::ref_ptr<osg::Vec3Array> osgVertices,
+        osg::ref_ptr<osg::Vec3Array> osgNormals);
+
     osg::ref_ptr<osg::Material> getOsgMaterial(const IfcGeom::Material& material);
 };