This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h. Set the input for this transformation. This will be used as the base transformation if it is set. Set the current matrix directly. Returns the result of multiplying the currently set Point by the current transformation matrix.
Point is expressed in homogeneous coordinates.
The setting of the PreMultiplyFlag will determine if the Point is Pre or Post multiplied. Create a translation matrix and concatenate it with the current transformation according to PreMultiply or PostMultiply semantics.