RotoPaint - Nuke 101: Professional Compositing and Visual Effects - page 275

16. While viewing Viewer input 1, select the Bézier tool and follow the actor's head
from the end back to when he leaves the frame. Start by drawing the shape in
frame 51.
17. Keep switching between buffer 1 and 2 to make sure you're covering everything
you need to, without doing unnecessary work. The curls at the back of the actor's
head, for example, are something you don't have to worry about as there is no
overlap ( FIGURE 6.45 ) .
Figure 6.45. The second Bézier shape on frame 51.
Tip
Iftheshapeiseverinthewayofseeingwhereyouwanttodraw,you
can turn it off by hovering the mouse pointer over the Viewer and
pressing the O key. Press O again to display the overlays again.
18. Take your time and go over the whole clip, changing the shape and adding key-
frames as you go.
When you're finished, pat yourself on the back. You now just need to use the
matte you created to place the foreground actor on top of the background actor. If
you can work it out yourself, I urge you to try, or continue following the instruc-
tions to finish this comp. Even if you do it yourself, you should probably read the
rest of this section, as there are things you might want to learn about.
19. To use the matte you created, select the fg.png Read node and press Shift to
branch out a ShuffleCopy node from the Channel toolbox ( FIGURE 6.46 ) .
Figure 6.46. Make sure to branch the ShuffleCopy.