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当我做一些像 glOrtho(-2, 6, 0, 8, -4, 4);这样愚蠢的事情时 它会围绕什么点旋转?还是0,0,0左右,还是2,4,0 左右?
glOrtho将当前矩阵与正交矩阵相乘。它不添加旋转;相反,它应该进行正交投影。
glOrtho