identity_matrix, identity_matrix_f

Global containing the identity matrix. Allegro game programming library.

Provided by: allegro4-doc (Version: 2:4.4.3.1-2)
Source: allegro4.4
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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.