What is the best way to create an excluding area for the grass, around the trees ?
You can create an excluding area using other Forest object as reference. The following video shows this technique
📄️ I would like to improve my viewport performance, when using complex scene with Multiple Forest objects. Is it possible ?
I would like to improve my viewport performance, when using complex scene with Multiple Forest objects. Is it possible ?
📄️ Should I use meshes or proxies with Forest in V-Ray ?
Internally all Forest objects are converted to native instances of V-Ray, so there is no performance loss using meshes instead proxies.
📄️ Forest 4.1 and above: XRef error loading scenes that uses 4.0 Presets
📄️ Edges of Surface Areas
When Forest uses a Surface is a scattering area, it extracts a "virtual" spline from closed edges of the mesh, and this is used as a Spline Area for several operations, including Size/Edge youndary checking, Area Falloffs and others.