Apple Shake 4 Tutorials - Manual (Page 35)

Chapter 1 Shake Basics 35
2 Click the right side of the RGrad1 node to load it into the Parameters tab.
3 In the RGrad1 Parameters tab, set radius to 100, and falloffRadius to 400.
4 Display the subtree for center, then change the xCenter value to 360.
5 Change aspectRatio to 1.5.
The result will look similar to this:
The overlay circles and crosshairs are interactive transform controls that allow you to
make adjustments in the Viewer.
6 Drag the inner and outer circles to change the radius and falloffRadius, then drag the
crosshairs to move the center of the gradient, adjusting the appearance of focal range.