gluOrtho2D — define a 2D orthographic projection matrix

C Specification

void gluOrtho2D(GLdouble left,
 GLdouble right,
 GLdouble bottom,
 GLdouble top);


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.


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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