Provided by: allegro5-doc_5.2.3.0-1_all 

NAME
al_vertical_shear_transform - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro.h>
void al_vertical_shear_transform(ALLEGRO_TRANSFORM* trans, float theta)
DESCRIPTION
Apply a vertical shear to the transform
Parameters:
• trans - Transformation to alter
• theta - Rotation angle in radians
SINCE
5.1.7
SEE ALSO
al_horizontal_shear_transform(3alleg5)
Allegro reference manual al_vertical_shear_transform(3alleg5)