1991-2006 Silicon Graphics, Inc. gluOrtho2D 3G gluOrtho2D define a 2D orthographic projection matrix C Specification void gluOrtho2D GLdouble left GLdouble right GLdouble bottom GLdouble top Parameters left right Specify the coordinates for the left and right vertical clipping planes. bottom top Specify the coordinates for the bottom and top horizontal clipping planes. Description gluOrtho2D sets up a two-dimensional orthographic viewing region. This is equivalent to calling glOrtho with near = -1 and far = 1 . See Also glOrtho, gluPerspective Copyright Copyright 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.