// constructors
public RotationalPrimitive()
{
for( int i = 0; i < 4; i++ )
{
OuterFaces[i] = new CrossSection();
InnerFaces[i] = new CrossSection();
}
CutFaces[0] = new CrossSection();
CutFaces[1] = new CrossSection();
rotationalextrusionpath = new RotationalExtrusionPath();
rotationalextrusionpath.LevelOfDetail = iLevelOfDetail;
UpdateExtrusionScaling();
}