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Do Not Track Layer
The owning parent object of a mesh does not need to have a deformation map: since it is the mesh's parent, all vertices will be carried along for sure; none can be left hanging in the world coordinate system.
Instead, the owning object's vertex map is the do not track map, which says which vertices (and faces) should be ignored during tracking. Initially, all vertices will be tracked; vertices that are added to the owning object's vertex map are not tracked. It's a little backwards, but easier in practice. Areas marked do-not-track are drawn in a darker color. Note that the do-not-track layer can be set up even when the owning object is a regular non-GeoH moving object; it's do-not-track layer still affects the GeoH children.
It's important to distinguish do-not-track from the deformation control layer when you go to create a do-not-track layer. If you are working on a child GeoH object, and attempt to create a do-not-track area by putting a hole in the child's deformation layer, you'll discover that those vertices will be left behind in the child object's deformation, creating very strange looking non-useful results. Instead you need to mark the do-not- track region in the right place: on the owning top-level parent object.
Vertex weights are irrelevant and unused for the do-not-track layer.
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