GLUORTHO2D(3G) GLUORTHO2D(3G)

gluOrtho2D - define a 2D orthographic projection matrix

void gluOrtho2D( GLdouble left,

	GLdouble right,
	GLdouble bottom,
	GLdouble top )

Specify the coordinates for the left and right vertical clipping planes.
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.

glOrtho, gluPerspective