8

Flag Properties Dialog 1465
TheSourceMapcontrolsareavailableonlywhen
Mapped is the chosen gradient type.
Noise group
Amount—When nonzero, a random noise effect is
applied to the gradient, based on the interaction of
the gr adient ramp colors (and maps, if present).
The higher this value, the greater the effect.
Range=0 to 1.
Regular—Generates plain noise. Basically the
same as fractal noise with levels disabled (because
Regular is not a fractal function).
Fr act al—Generates noise using a fractal algorithm.
The Levels option sets the number of iterations for
the fractal noise.
Tu rbu lence—Generates fractal noise with an
absolute value function applied to it to make fault
lines. Note that the noise amount must be greater
than 0 to see any effects of turbulence.
Size—Sets the sca le of the noise function. Smaller
values give smaller chunks of noise.
Phase—Controls the speed of the animation of the
noise function. A 3D noise function is used for the
noise; the first two parameters are U and V and
the third is phase.
Leve ls —Sets the number of fractal iterations or
turbulence (as a continuous function).
Noise Threshold group
When t he noise value is above the Low threshold
and below the High threshold, the dynamic r ange
is stretched to fill 0 to 1. This causes a smaller
discontinuity at the threshold transition and
produces less potential aliasing.
High—Sets the high threshold.
Low—Sets the low threshold.
Smooth—Helps make a smoother transit ion from
thethresholdvaluetothenoisevalue. When
Smooth is 0, no smoothing is applied. When
Smooth is 1, the maximum amount of smoothing
is applied.
Flag Properties Dialog
Material Editor > Maps rollout > Click a Map button. >
Material/Map Browser > Gradient Ramp > Gradient Ramp
Parameters rollout > Right-click a flag at the bottom of the
gradient bar. > Edit Properties > Flag Properties dialog
By setting parameters on the Flag Prop ert ies
dialog , you can customize the effect of each flag
on the Gradient Ramp map. You have access to
all flags from this dialog.
See also
Gradient Ramp Map (page 2–1462)
Interfa ce
Name f ield—Select any flag with the spinners. The
selected flag turns green on the gradient bar. Use
this field to rename a flag to represent its use in the
gradient.
Interpolation—Disabled unless the Interpolation
type for the Gradient Ramp map is set to Custom.
The available interpolation ty pes for flags are