man identity_matrix () - Global containing the identity matrix. Allegro game programming library.

NAME

identity_matrix, identity_matrix_f - Global containing the identity matrix. Allegro game programming library.

SYNOPSIS

#include <allegro.h>

extern MATRIX identity_matrix;

extern MATRIX_f identity_matrix_f;

DESCRIPTION

Global variables containing the 'do nothing' identity matrix. Multiplying by the identity matrix has no effect.