al_build_transform (3alleg5)

• #include <allegro5/allegro.h>
  
  void al_build_transform(ALLEGRO_TRANSFORM *trans, float x, float y,
     float sx, float sy, float theta)
  
  

Builds a transformation given some parameters. This call is equivalent to calling the transformations in this order: make identity, scale, rotate, translate. This method is faster, however, than actually calling those functions.

Parameters:

\[bu]

trans - Transformation to alter

\[bu]

x, y - Translation

\[bu]

sx, sy - Scale

\[bu]

theta - Rotation angle in radians

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