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matrix_mul - Man Page

Multiplies two matrices. Allegro game programming library.


#include <allegro.h>

void matrix_mul(const MATRIX *m1, const MATRIX *m2, MATRIX *out);

void matrix_mul_f(const MATRIX_f *m1, const MATRIX_f *m2, MATRIX_f *out);


Multiplies two matrices, storing the result in out (this may be a  duplicate of one of the input matrices, but it is faster when the inputs  and output are all different). The resulting matrix will have the same  effect as the combination of m1 and m2, ie. when applied to a point p, (p  * out) = ((p * m1) * m2). Any number of transformations can be  concatenated in this way. Note that matrix multiplication is not  commutative, ie. matrix_mul(m1, m2) != matrix_mul(m2, m1).

See Also

apply_matrix(3), exquat(3), exscn3d(3)

Referenced By

apply_matrix(3), exquat(3), exscn3d(3).

The man page matrix_mul_f(3) is an alias of matrix_mul(3).

version 4.4.3 Allegro manual