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Man Pages
get_align_matrix(3) Allegro manual get_align_matrix(3)

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

#include <allegro.h>

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

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.

apply_matrix(3), get_camera_matrix(3)
version 4.4.3 Allegro

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