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258 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 not ice that there is already
alinewithaPointoneachendwhichrepresentsthe
linear transition from one color to the next. The
default falloff is a fade from one color at a value of
one to the other color which ends at a value of z ero.
This produces an effect 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 al low 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.
Interfa ce
Move—Movesselectedpointsinanydirection.
ClickandholdtheMovebuttontodisplaythe
flyout where you can select a button to move in any
direction, move only in the horizontal direction,
or mov e only in the vertical direction. The Move
function remains act ive until you click another
button. The button is yellow while it is active.
Scale Point—Ver t ically scales a point up or dow n.
Click once to enable Scale Point. The Scale Point
function remains act ive until you click another
button. The 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 Point button to display the fly out 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. The button is yellow w h ile
it is active.
Delete Point—Deletes selected points.
Hori zontal Position—Allows you to m anually 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