PshearX is available since version 1.0.0.
Shears a shape around the x-axis the amount specified by the angle parameter. Angles should be specified in radians (values from 0 to 2 PI). Objects are always sheared around their relative position to the origin and positive numbers shear objects in a clockwise direction. Transformations apply to everything that happens after and subsequent calls to the function accumulates the effect.
PshearX multiplies the current transformation matrix by a rotation matrix. This function can be further controlled by the