rescale_normal.py :  » Game-2D-3D » PyOpenGL » PyOpenGL-3.0.1 » OpenGL » GL » EXT » Python Open Source

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Python Open Source » Game 2D 3D » PyOpenGL 
PyOpenGL » PyOpenGL 3.0.1 » OpenGL » GL » EXT » rescale_normal.py
'''OpenGL extension EXT.rescale_normal

This module customises the behaviour of the 
OpenGL.raw.GL.EXT.rescale_normal to provide a more 
Python-friendly API

Overview (from thespec import 
  
  When normal rescaling is enabled a new operation is added to the
  transformation of the normal vector into eye coordinates.  The normal vector 
  is rescaled after it is multiplied by the inverse modelview matrix and 
  before it is normalized.  
  
  The rescale factor is chosen so that in many cases normal vectors with unit
  length in object coordinates will not need to be normalized as they
  are transformed into eye coordinates.

The official definition of this extension is available here:
http://www.opengl.org/registry/specs/EXT/rescale_normal.txt
'''
from OpenGL import platform,constants,constant,arrays
from OpenGL import extensions,wrapper
from OpenGL.GL import glget
import ctypes
from OpenGL.raw.GL.EXT.rescale_normal import *
### END AUTOGENERATED SECTION
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