Jason Hayes

A couple of functions to switch between 2D and 3D projections.

from OpenGL.GL import *

def set_projection_2d( ):
	viewport = glGetIntegerv( GL_VIEWPORT )

	glMatrixMode( GL_PROJECTION )
	glLoadIdentity( )
	gluOrtho2D( 0, viewport[ 2 ], viewport[ 3 ], 0 )
	glMatrixMode( GL_MODELVIEW )
	glLoadIdentity( )

def set_projection_3d( ):
	viewport = glGetIntegerv( GL_VIEWPORT )

	glMatrixMode( GL_PROJECTION )
	glLoadIdentity( )
	gluPerspective( 60.0, float( viewport[ 2 ] ) / float( viewport[ 3 ] ), 0.1, 1000.0 )
	glMatrixMode( GL_MODELVIEW )
	glLoadIdentity( )