oliviano · March 23, 2021 22:57
diff --git a/3D_changeCoordinateSystem b/3D_changeCoordinateSystem
 --- Change Coordinate System ---  

 If you are only changing the handedness then you just need to scale the axis you want to switch. In this case scale in -1.0 in Z.
 However what this also does is change the winding of your polygons. 
 When a polygon’s normal is facing the camera, TD expects the polygon’s vertex winding to be counter-clockwise. 
 Scaling by -1.0 in only one axis direction will cause the polygon windings to be reversed 
 so now the face with the normal pointing out will be clockwise. 
 You need to fix this using a Vertex SOP to re-reverse the winding. Otherwise your lighting won’t work correctly.
	--- Change Coordinate System ---

	If you are only changing the handedness then you just need to scale the axis you want to switch. In this case scale in -1.0 in Z.
	However what this also does is change the winding of your polygons.
	When a polygon’s normal is facing the camera, TD expects the polygon’s vertex winding to be counter-clockwise.
	Scaling by -1.0 in only one axis direction will cause the polygon windings to be reversed
	so now the face with the normal pointing out will be clockwise.
	You need to fix this using a Vertex SOP to re-reverse the winding. Otherwise your lighting won’t work correctly.