VRML file

	carrier.wrl

Converted IGP file

	carrier.igp		5996 Objects, 78729 Polygons ->   13 Polygons per Objects

	color merged file

	carrier-merge.igp	  17 Objects, 78729 Polygons -> 4631 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.
