fengye

static void bitmap_source_release_content(ALLEGRO_GC_BITMAPSOURCE *bitmap_source)
{
    if ( bitmap_source->type == BS_NORMAL )
    {
        if ( bitmap_source->name_to_bitmap )
        {
            /* free string key */
            AL_AATREE_ITERATOR* iterator = al_aa_begin(bitmap_source->name_to_bitmap);
            while (iterator && al_aa_next(iterator)) 

fengye

/* Function: al_transform_rotation
 */
void al_transform_rotation(const ALLEGRO_TRANSFORM *trans, float* rotation)
{
    float t = *rotation;
    *rotation = t - atan2f(trans->m[0][1], trans->m[0][0]);
}