The Boundaries filter controls the density and the scale of scattered instances depending on their distance to the boundaries of surfaces and masks.
The Altitude filter controls the density and the scale of scattered instances depending on their absolute vertical positions in the model. For instance, this can be useful to control scattering over mountainous landscapes or to finely tune positioning over green walls.
Bottom falloffhave positive values, an advanced curve editor appears to customize the evolution of density and scale. Learn how to use that curve editor in the Falloff Curves section.
The Slope filter controls the density and the scale of scattered instances depending on the angle of the surfaces on which they are placed. For example, it can be used to prevent trees from being scattered on a cliff.
The Collision filter discards scattered instances that overlap with each other, to prevent unrealistic interpenetrations between objects.
Contrary to the
Scale multiplierparameter of objects, the
Radiusparameter has no effect on the final size of the instances. It only changes the size used internally by Skatter when checking collisions.
This is useful in cases when instances should be spaced generously (
> 100%) or to allow a certain degree of interpenetration (
All falloffs in Skatter are controlled by a falloff curve. By default, falloffs are interpolated linearly, but you can draw your own curve to create sophisticated effects.
Move your cursor over the curve preview, and click the
icon to edit the curve. You can also click the
icon to reset the curve to its default linear state, and the
icon to invert the curve.