User Manual

Burn In
The Burn In control adjusts the amount of Alpha used to darken the objects that fall behind
other objects, without affecting the amount of foreground objects added. At 0.0, the blending
behaves like a straight Alpha blend, in contrast to a setting of 1.0 where the objects in the front
are effectively added on to the objects in the back (after Alpha multiplication if in Subtractive
mode). This gives the effect of the foreground objects brightening the objects in the back, as
with Alpha Gain. In fact, for Additive blends, increasing the Burn In gives an identical result to
decreasing Alpha Gain.
Blend
This blend control is different from the Blend slider in the Common Settings tab. Changes made
to this control apply the blend between objects. The Blend slider fades the results of the last
object first, the penultimate after that, and so on. The blending is divided between 0 and 1, with
1 being all objects are fully opaque and 0 being only the original object showing.
Merge Under
This checkbox reverses the layer order of the duplicated elements, making the last copy the
bottommost layer and the first copy the topmost layer.
Jitter Tab
The options in the Jitter tab allow you to randomize the position, rotation, size, and color of all
the copies created in the Controls tab.
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Duplicate Jitter tab
Random Seed
The Random Seed slider and Reseed button are used to generate a random starting point for
the amount of jitter applied to the duplicated objects. Two Duplicate nodes with identical
settings but different random seeds produce two completely different results.
Center X and Y
Use these two controls to adjust the amount of variation in the X and Y position of the
duplicated objects.
Axis X and Y
Use these two controls to adjust the amount of variation in the rotational pivot center of the
duplicated objects. This affects only the additional jitter rotation, not the rotation produced by
the Rotation settings in the Controls tab.
X Size
Use this control to adjust the amount of variation in the Scale of the duplicated objects.
Chapter – 88 Effect Nodes 1945