(PECL gmagick >= Unknown)
Creating a parallelogram
public Gmagick Gmagick::shearimage ( mixed $color, float $xShear, float $yShear )
Slides one edge of an image along the X or Y axis, creating a parallelogram. An X direction shear slides an edge along the X axis, while a Y direction shear slides an edge along the Y axis. The amount of the shear is controlled by a shear angle. For X direction shears, x_shear is measured re