Refl: Uses the direction of the reflection vector as coordinates. You will need this input when Environment Mapping.
反射： 使用反射向量的方向作为坐标。环境映射需要这种输入。
Using the Reflection API, you obtain each variable's value and store it in the inner vector.
用 Reflection API 获得每一个变量的值并将它存储到内部 vector 中。
Diffraction direction of a ray passing a crystal for symmetrical or asymmetrical reflection is calculated from the vector form of Laue diffraction equation.
根据劳厄衍射方程的矢量形式计算光线经对称或非对称晶体衍射后的方向。
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