📄 ortho2d.html
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<HTML><BODY><PRE> <STRONG>NAME</STRONG> <STRONG>gluOrtho2D</STRONG> - define a 2D orthographic projection matrix <STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG> void <STRONG>gluOrtho2D</STRONG>( GLdouble <EM>left</EM>, GLdouble <EM>right</EM>, GLdouble <EM>bottom</EM>, GLdouble <EM>top</EM> ) <STRONG>PARAMETERS</STRONG> <EM>left</EM>, <EM>right</EM> Specify the coordinates for the left and right vertical clipping planes. <EM>bottom</EM>, <EM>top</EM> Specify the coordinates for the bottom and top horizontal clipping planes. <STRONG>DESCRIPTION</STRONG> <STRONG>gluOrtho2D</STRONG> sets up a two-dimensional orthographic viewing region. This is equivalent to calling <STRONG>glOrtho</STRONG> with near=-1 and far=1. <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG> <STRONG>glOrtho</STRONG>, <STRONG>gluPerspective</STRONG></PRE></BODY></HTML>⌨️ 快捷键说明
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