anchor: Transform:shear
  Applies a shear factor (skew) to the Transform's coordinate system. This method does not reset any previously applied transformations.
  transform = Transform:shear( kx, ky )
  kx number The shear factor along the x-axis.
  ky number The shear factor along the y-axis.
  transform Transform The Transform object the method was called on. Allows easily chaining Transform methods.