polardecomp

matrix3  polardecomp(matrix3 transform)

Computes the stretch matrix (S) and the orthogonal matrix (Q) such that M = S*Q. This is very useful for shape matching or blending of transforms.

transform

The matrix (M) to undergo polar decomposition.

Returns

‘Q’, the orthogonal matrix that best matches the given transform.

void  polardecomp(matrix3 transform, matrix3 &rot, matrix3 &stretch, int check_determinant=1)

&rot

Returns the orthogonal matrix of the polar decomposition.

&stretch

Returns the stretch matrix of the polar decomposition.

check_determinant

Whether or not to check if there is a negative determinant (scale). If there is and this is not set to 0, the orthogonal and scale matrices will be negated.