Area
In this rollout we define the zones where the trees will be
created.
Include Spline
With the 'Pick' button we must select a spline on the scene.
All trees are created inside this area. The spline must be closed.
If it is compound by several sub-splines, trees are created inside
all valid areas.
With the 'Clear' button, we clear the selection.
Note: This spline also defines the Z position of trees when
not using surfaces. But all trees all placed over the same height
position: the highest vertex of the spline.
Exclude Spline
The spline selected with this option defines the areas where
trees are not created, excluding them from include spline. Also
must be closed and may be compound by other sub-splines.
The plugin need more time and effort to calcule the trees
when using exclude splines (it first must build all trees and
following must ignore which are inside the exclusion areas).
Because this, we must minimize using it. In the most of scenes
it's possible to define complex areas with only include spline.
For example:
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