Matrix4x4.MultiplyVector 变换方向

function MultiplyVector (v : Vector3) : Vector3

Description描述

Transforms a direction by this matrix.

通过这个矩阵变换方向。

This function is similar to MultiplyPoint; but it transforms directions and not positions. When transforming a direction, only the rotation part of the matrix is taken into account.

这个函数类似于MultiplyPoint，但它是变换方向而不是位置。在变换方向时，仅考虑矩阵的旋转部分。

参见：MultiplyPoint, MultiplyPoint3x4.