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/.