more OBJ bugs fixed

refs 930

org.fortiss.tooling.graphicsGL/trunk/src/org/fortiss/tooling/graphicsGL/util/Mesh3DModelElementFactory.java

@@ -114,7 +114,8 @@ public class Mesh3DModelElementFactory {
 	public static MaterialGroup3D materialGroup(Material3D m, List<Face3D> faces,
 			boolean smoothShading) {
 		MaterialGroup3D group = MeshFactory.eINSTANCE.createMaterialGroup3D();
-		group.setMaterial(m);
+		group.setMaterial(material(m.getAmbient(), m.getDiffuse(), m.getSpecular(),
+				m.getSpecularCoeff()));
 		group.setSmoothShading(smoothShading);
 		group.getFacesList().addAll(faces);
 		return group;

org.fortiss.tooling.graphicsGL/trunk/src/org/fortiss/tooling/graphicsGL/util/OBJLoaderUtil.java

@@ -127,6 +127,7 @@ public class OBJLoaderUtil {
 					smoothShading = true;
 				}
 			} else if(line.startsWith("o ")) { // next object
+				addMaterialGroup();
 				addObject(objectData);
 				objectName = line.split(" ")[1];
 			} else if(line.startsWith("usemtl ")) { // use material