Apple Shake 4 - Manual (Page 582)

582 Chapter 21 Paint
Other Viewer Shelf Controls
The QuickPaint node has the following Viewer shelf controls:
Button Description
Active Channels These buttons indicate which channels are being painted
on. For example, to touch up the alpha channel only, turn
off the RGB channels.
Frame Mode When Frame mode is selected, you only paint on the
current frame.
Interp Mode When Interp (Interpolate) mode is selected, brush strokes
are animated using interpolation from one frame to the
next. For example, paint a stroke on frame 1, and then go
to frame 20, and paint a stroke on frame 20. When you
scrub between 1 and 20, the stroke interpolates. Beyond
frame 20 or before frame 1, the image is black.
To insert a second interpolation stroke, click the Interp
toggle until Interp is selected again, and use the
strokeIndex slider in the Edit Controls tab to select the
stroke you wish to modify.
Persist Mode When Persist (Persistent) mode is selected, the stroke
persists from frame to frame. The stroke does not change
unless you switch to Edit mode and animate the stroke.
History Step Use the History Step buttons to step backward or
forward through your history. Using these buttons
activates Edit mode.
As you step backward, the strokeIndex parameter in the
Edit Controls tab indicates the current stroke number.
Although you can edit any brush at any time, this
parameter sets the point at which you are evaluating
your paint.
You can, for example, step back several strokes, insert a
new stroke, and then step forward. The later strokes are
placed on top of your new stroke because the new stroke
is earlier in the step history.
Magnet Drag Mode When Magnet Drag mode is enabled, and you are in Edit
mode, you can select a group of points on a stroke. If you
click near the middle of the points and drag, the points
near the selected point are dragged more than points
farther away. You can also press and hold Z to
temporarily activate this mode if you are in Linear Drag
mode.
Linear Drag Mode Click the Magnet Drag button to toggle to Linear Drag
mode. When in Edit mode and you drag a group of
points, they all move the same amount.