gluOrtho2D Subroutine

OpenGL 1.2 for AIX: Reference Manual

gluOrtho2D Subroutine

Purpose

Defines a 2-dimensional (2D) orthographic projection matrix.

Library

OpenGL C bindings library: libGL.a

C Syntax

void gluOrtho2D(GLdoubleleft, 
   GLdouble right, 
   GLdouble bottom, 
   GLdouble top)

Description

The gluOrtho2D subroutine sets up a 2D orthographic viewing region. Use of this subroutine is equivalent to calling glOrtho with values of Near = -1 and Far = 1.

Parameters

left	Specifies the coordinates for the left vertical clipping planes.
right	Specifies the coordinates for the right vertical clipping planes.
bottom	Specifies the coordinates for the bottom horizontal clipping planes.
top	Specifies the coordinates for the top horizontal clipping planes.

Files

/usr/include/GL/gl.h

Contains C language constraints, variable type definitions, and ANSI function prototypes for OpenGL.

Related Information

The glOrtho subroutine, gluPerspective subroutine.

OpenGL Overview.