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254 Chapter 18: Effects and Environments
Rings with different Radial Falloff settings
The Radial Falloff graph has controls at the top
for creating and moving Points on a curve on the
graph below. The curve represents the range of
colors you have selected in the Radial Color group
box to apply to the current Lens Effect. When you
open the dialog you will notice that there is already
alinewithaPointoneachendwhichrepresentsthe
linear transition from one color to the next. The
default fa lloff is a fade from one color at a value of
one to the other color which ends at a value of zero.
This produces an effe ct with more intensity on
the first color and a considerable fading out of the
second color. By placing Points along the curve,
you can drag these points to increase or decrease a
colors intensity or to eliminate it altogether.
Buttons are available at the bottom of the dialog
that allow you to change the d isplay of the dialog.
You can also manually enter a horizontal or
vertical position by entering a value into the two
entry boxes.
Interfa ce
Move—Movesselectedpointsinanydirection.
ClickandholdtheMovebuttontodisplaythe
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. T he button is yellow while it is active.
Scale Point—Vert ically scales a point up or down.
Click once to enable Scale Point. The Scale Point
function remains active until you click another
button. T he button is yellow while it is active.
Add Point—Allows you to add points anywhere
along the Circular Falloff curve. Click and hold the
Add Poin t button to display the flyout where you
can select a button to add either a Corner Point
or a Bezier Point. Click once to enable Add Point.
The Add Point function remains active until you
click another button. T he button is yellow while
it is active.
Delete Point—Deletes selected points.
Hori zontal Position—Allows you to manually enter
a horizontal position value for a selected point.
Vertical Position—Allows you to manually enter a
vertical position value for a selected point.
Pan —Allows you to click and drag the Radial
Falloff graph to move it left and right or up and
down. Click once to enable panning. Pan remains