Trees as Obstacles
Trees can have a big effect on visibility. The visibility operators can take a raster of tree heights from VisibilityOperator.TreeHeightInput. These tree heights will be added to the ground elevations that come from VisibilityOperator.ElevationInput.
If you do not know the tree heights, you can use a RasterReclassificationOperator to guess obstacle heights from terrain types (like pine forest, birch forest, field...).
If you model the trees, make sure that you use a setting for LineOfSightOperator.MinVisibilityHeightType that is appropriate for your application.
For more details, see Line of Sight Configuration Tutorial.
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