get_align_matrix (3) Linux Manual Page

get_align_matrix – Rotates a matrix to align it along specified coordinate vectors. Allegro game programming library.

Synopsis

#include <allegro.h>

void get_align_matrix(MATRIX *m, fixed xfront, yfront, zfront, fixed xup, fixed yup, fixed zup);

Description

Rotates a matrix so that it is aligned along the specified coordinate vectors (they need not be normalized or perpendicular, but the up and front must not be equal). A front vector of 0,0,-1 and up vector of 0,1,0 will return the identity matrix.

See Also

apply_matrix(3), get_camera_matrix(3)