Function normalFromMatrix4

normalFromMatrix4<T extends Matrix3Like>(matrix: Matrix4Like, out: T): T
Calculate a three-by-three normal (inverse transpose) matrix from a four-by-four matrix.
Type Parameters
- T extends Matrix3Like
Parameters
- matrix: Matrix4Like
  The four-by-four matrix.
- out: T
  The matrix to store the result in.
Returns T
The normal matrix.

See
Normal matrix
- Defined in src/linalg/Matrix3.ts:225