旋转矩阵

rotation matrix的用法和样例：

例句

These can be used to create a rotation matrix at every point on the surface which will transform vectors from the global coordinate system to tangent space.这些数据能会用来为表面上每个顶点创建一个旋转矩阵，能够用来把向量从全局坐标系转换到切线空间。

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