Allegro 5 api
#include <allegro5/allegro.h> void al_scale_transform(ALLEGRO_TRANSFORM *trans, float sx, float sy)
Apply a scale to a transformation.
Parameters:
trans - Transformation to alter
sx, sy - Scale
al_translate_transform(3alleg5), al_rotate_transform(3alleg5), al_build_transform(3alleg5)