Controls if and how the direction of the transition changes with each use.
- Constant: the wipe always starts along the same direction, specified by the Angle parameter.
- Increase: on its first use, the wipe starts in the direction specified by the Angle parameter. On subsequent uses, the angle is increased by the amount specified by the Increment parameter.
- Flip: on its first use, the wipe starts in the direction specified by the Angle parameter. On subsequent uses, the angle is flipped to the opposite direction.
- Randomize: the wipe transition starts in a random direction at every use.
Please note that the transition may change direction as it progresses. This behavior is controlled by the End Direction parameter.