gluOrtho2D — define a 2D orthographic projection matrix
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
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