al_identity_transform - Allegro 5 API

       Sets  the  transformation  to  be  the identity transformation.  This is the default transformation.  Use
       al_use_transform(3alleg5) on an identity transformation to return to the default.

              ALLEGRO_TRANSFORM t;
              al_identity_transform(&t);
              al_use_transform(&t);

       Parameters:

       • trans - Transformation to alter

       al_identity_transform - Allegro 5 API

al_translate_transform(3alleg5), al_rotate_transform(3alleg5), al_scale_transform(3alleg5)

Allegro reference manual                                                          al_identity_transform(3alleg5)

              #include <allegro5/allegro.h>

              void al_identity_transform(ALLEGRO_TRANSFORM *trans)