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Chapter 13. Keyframe Interpolation > Converting Mask Paths into Motion Paths

Converting Mask Paths into Motion Paths

An open mask path is not only analogous to a motion path, it can also be converted into one.

To paste a mask path as a motion path:

1.
In a Layer window, select an open mask path (Figure 13.41).

Figure 13.41. In a Layer window, select an open mask path. You can also copy a path from Photoshop or Illustrator (shown here).


2.
Choose Edit > Copy, or press Command-C (Mac) or Ctrl-C (Windows) (Figure 13.42).

Figure 13.42. Choose Edit > Copy, or press Command-C (Mac) or Ctrl-C (Windows) (Illustrator's Copy command).


3.
In the Timeline window, expand the layer outline to reveal the spatial property you want to paste the path into.

You can use Position, Effect Point, or Anchor Point properties.

4.
4Select the property name.

The property's keyframes are highlighted. If the property has no keyframes, the I-beam icon is highlighted.

5.
Set the current time to the frame you want the pasted keyframes to start (Figure 13.43).

Figure 13.43. Select the property name and set the current time to the frame you want the pasted keyframes to start.


6.
Choose Edit > Paste, or press Command-V (Mac) or Ctrl-V (Windows) (Figure 13.44).

Figure 13.44. Choose Edit > Paste, or press Command-V (Mac) or Ctrl-V (Windows).


The keyframes appear in the property track, beginning at the current time and ending two seconds later (Figure 13.45).

Figure 13.45. The keyframes appear in the property track, beginning at the current time.


7.
Edit the motion path as you would any other (Figure 13.46).

Figure 13.46. Edit the motion path as you would any other.



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