bionic (3) al_build_transform.3alleg5.gz

NAME

       al_build_transform - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro.h>

              void al_build_transform(ALLEGRO_TRANSFORM *trans, float x, float y,
                 float sx, float sy, float theta)

DESCRIPTION

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

       Parameters:

       • trans - Transformation to alter

       • x, y - Translation

       • sx, sy - Scale

       • theta - Rotation angle in radians

         Note:  this  function was previously documented to be equivalent to a different (and more useful) order
         of operations: identity, scale, rotate, translate.

SEE ALSO

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