2008

The Radial Density dialog has controls at the top for creating and moving
Points on a curve on the graph below. The curve represents the density of the
additional effect being applied to the Lens Effect. When you open the dialog
you will notice that there is already a line with a Point on each end which
represents the density of the effect. The default falloff is a fade from a density
value of 1 starting from the center of the effect toward the outer edges which
has a value of 0. This produces an effect with more density being rendered at
the center of the effect and a gradual fading out to no density at the edges.
By placing Points along the curve, you can drag these points to increase or
decrease the density of an additional effect or eliminate it in some areas
altogether.
Buttons are available at the bottom of the dialog that allow you to change the
display of the dialog. You can also manually enter a horizontal or vertical
position by entering a value into the two entry boxes.
Interface
Move Moves selected points in any direction. Click and hold the Move
button to display the flyout where you can select a button to move in any
direction, move only in the horizontal direction, or move only in the vertical
direction. The Move function remains active until you click another button.
The button is yellow while it is active.
Scale Point Vertically scales a point up or down. Click once to enable Scale
Point. The Scale Point function remains active until you click another button.
The button is yellow while it is active.
Add Point Allows you to add points anywhere along the Radial Density
curve. Click and hold the Add Point button to display the flyout where you
can select a button to add either a Corner Point or a Bezier Point. Click once
6454 | Chapter 19 Effects and Environments