RotoPaint - Nuke 101: Professional Compositing and Visual Effects - page 251

The Eraser erases previous paint strokes. It does not erase the image (if you have
one connected in RotoPaint's input) in any way, and it's a paint stroke just like
any other.
2. Switch back to the Select tool and click to select a stroke to delete.
3. Notice that the selected stroke is highlighted in the Stroke/Shape List window.
Click it there as well.
4. Press Backspace/Delete to delete the stroke.
OK, that's enough editing of brush strokes for now.
Drawing and editing shapes
It's time to start practicing drawing shapes. For that you will need a new RotoPaint node.
1. Clear the Properties Bin.
2. With nothing selected in the DAG, press the P key to create another RotoPaint
node, RotoPaint2.
3. View RotoShape2 in the Viewer. You're going to focus on drawing Béziers.
4. Choose the Bézier tool by clicking it on the RotoPaint Toolbar, or hovering in the
Viewer and pressing V on the keyboard.
5. Start drawing a curve by clicking in the Viewer. Make whatever shape you like.
A simple click will result in a linear key for the shape, whereas a click and drag
will create a smooth key. It is important you finish drawing the curve by clicking
the first point again. You can continue adding points after you draw the shape.
6. To add points after the curve is finished, Ctrl-Alt/Cmd-Option-click.
7. Switch back to the Select tool by clicking it in the Toolbar.
You can now keep changing and editing the shape. You can move points around,
change what kind of point you have, delete points, or add points.
You can choose a point and right-click (Ctrl-click) to display a contextual menu
( FIGURE 6.12 ) with all sorts of editing options, or you can use hot keys. TABLE
6.3 lists some hot keys to use with selected Bézier points.
Figure 6.12. Right-clicking/Ctrl-clicking a point on a shape opens the con-
textual menu.