private void GetTesselationData(IComponent2 comp, out float[] tessTriangs, out float[] tessNorms) { IModelDoc2 compModel = comp.IGetModelDoc(); if (compModel == null) { if (Path.GetExtension(comp.GetPathName()).Equals(".sldprt", StringComparison.CurrentCultureIgnoreCase)) { tessTriangs = comp.GetTessTriangles(true) as float[]; tessNorms = comp.GetTessNorms() as float[]; } else { throw new NotSupportedException("Only parts are supported"); } } else { if (compModel is IPartDoc) { GetTesselationDataFromPart(compModel as IPartDoc, out tessTriangs, out tessNorms); } else { throw new NotSupportedException("Only parts are supported"); } } }