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256 Chapter 18: Effects and Environments
Zoom E x tents—
Fits the curve within the graph
window both vertically and horizontally so that
theentirecurveisvisible.
Zoom Hor izontal Ex tents—Fits the curve
horizontally within the gr aph window so that the
full length of the c urve is visible.
Zoom Vert ical Extents—Fits the curve vertically
within the Circular Falloff graph window so that
thefullheightofthecurveisvisible.
Zoom Hor iz ontall y —Scales the width of the
Circular Falloff graph window.
Zoom Vertically—Scales the length of the Circular
Falloff graph window.
Zoom—Zooms in and out of the entire Circular
Falloff graph window.
Zoom Regi on—Allows you to drag a region in
the Circular Falloff graph window and scale that
region to fill the window.
R adial Density Dialog (Lens
Effects)
Rend ering menu > Effects > Environment and Effects
dialog > Effects panel > Add > Add Effect dialog > Lens
Effects > Choose any effect, and click the (>) arrow
button. > Options tab of the rollout for that effect >
Radial Density (u nder the Additiona l Effects group)
The Radial Density dialog allows you to add
weight to any additional effect applied to the Lens
Effect. By weighting the density of the additional
effect that you apply you can choose particular
areas in the effect to display more of the additional
effect or to eliminate it altogether. You can also use
Radial Density to gradually fade the additional
effect from maximum density down to zero or you
can create a sharp edge to t he transition.
Object with different Ray effects due to different Radial Density
settings
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 f ade from a densit y value of 1
starting from the center of the effect toward the
outer edges which has a value of 0.Thisproduces
an effect with more density being rendered at the
center of the effect and a gradua l 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
eliminateitinsomeareasaltogether.
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.
Interfa ce
Move—Movesselectedpointsinanydirection.
ClickandholdtheMovebuttontodisplaythe
flyout where you can select a button to move in any