VRML file

	tur_hinten_zsb.wrl

Converted IGP file

	tur_hinten_zsb.igp		  12 Objects, 13876 Polygons -> 1156 Polygons per Objects

	color merged file

	tur_hinten_zsb-merge.igp	   4 Objects, 13876 Polygons -> 3496 Polygons per Objects


Open GL Performance:

	3D Geometries with increased number of polygons per objects have 
	a better performance.
	A color merge, merges all objects with same color in one objects.
	In general the number of objects can be reduced dramatically.
