Allegro 5 api
#include <allegro5/allegro.h> void al_identity_transform(ALLEGRO_TRANSFORM *trans)
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_translate_transform(3alleg5), al_rotate_transform(3alleg5), al_scale_transform(3alleg5)