A class containing useful utility functions for scene manipulation.
instancedMesh -- The instanced mesh.
Creates a new group object that contains a new mesh for each instance of the given instanced mesh.
geometry -- The geometry for the set of materials.
materials -- The materials for the object.
Creates a new Group that contains a new mesh for each material defined in materials. Beware that this is not the same as an array of materials which defines multiple materials for 1 mesh.
This is mostly useful for objects that need both a material and a wireframe implementation.