Apple Shake 4 - Manual (Page 593)

Chapter 21 Paint 593
The types of strokes available are:
• Persist: Paint strokes are static, and remain onscreen from the frame in which they
were drawn until the last frame of the QuickPaint node.
• Frame: Paint strokes appear only in the frame in which they were drawn.
• Interp: Paint strokes remain onscreen from the frame in which they were drawn until
the last frame of the QuickPaint node. Their shape can be keyframed over time, to
create interpolated animation effects.
Color
A color control that lets you change the color of an existing stroke.
alpha
A slider that lets you change the alpha channel of the currently selected stroke. This
control does not modify the color of strokes, because strokes are not premultiplied. This
parameter affects the R, G, B, and A color channels of the image equally.
brushSize
The size of the brush. You can also Control-drag in the Viewer to set the brush size.
aspectRatio
Aspect ratio of the circular strokes.
startPoint
The point at which the stroke begins, based on a percentage offset. This parameter can
be keyframed to create write-on/off effects.
endPoint
The point at which the stroke stops, based on a percentage offset. This parameter can
also be keyframed to create write-on/off effects.
opacity
A slider that lets you change the transparency of the currently selected brushstroke.
Unlike the alpha slider, this parameter does change the color of the stroke.
keyFrames
This parameter contains keyframes applied to the QuickPaint node, but is not
modifiable by the user.
panX, panY
These parameters let you move strokes, using an offset from each stroke’s original
position.