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




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