Question

transform怎么变成三维向量

Answer 1

Transforms vector x, y, z from local space to world space.
变换一个向量（x, y, z）从局部坐标空间到世界坐标空间。
This operation is not affected by position of the transform, but is is affected by scale. The returned vector may have a different length than vector.
这个操作不受变换位置的影响，但是受缩放的影响。