Page 508 - ProShow Producer Manual

508 18. Modifiers

4. Select Keyframe 2. Start by setting the Rotate Center Y (vertical)
value to something that will place the rotation center at the
bottom of the image. 50 should be close.

5. Click on the Copy icon and select Copy To Next Keyframe. That
will make sure the rotation center stays the same for both
keyframes.

6. Add a modifier to the Rotate value of Keyframe 2.

7. In the Modifier Target pane, set the Apply To drop box to
Keyframe 2
8. Set the Type of Action to Add and change the variable to
Amount from Function. Choose Random as your function type.

The values of the random wave need to be changed. If you look at them by
default, they may be as high as 50 for the range, which would be very
severe rotation. You only need some very subtle rotation for this effect, so
the range needs to be reduced. At the same time, you want more shakes to
happen quickly, so the granularity needs to be reduced for more spikes in
the wave.

9. Change the Range value to 10.
10. Change the Granularity value to 1. That will create lots of little
spikes, for more shakes.

The first part of the modifier has been finished. If you notice though, this
only creates a positive rotation. If you press the Play button to see what you
have so far, the image will shake to the right, but not to the left. To get
shaking for both directions, we need to add another action to this modifier.
11. Click on the Add (+) icon in the Actions List

12. Set the Type of Action to Subtract and choose Constant
Amount as the variable.