The three material that draws a hit's triangle: object.material[i] of
its group (a folded mesh's from the triangle, a per-group instance's from
its source), or the object's one material. source and meshSource are
the hit instance's (sourceOf, meshSourceOf or scene.meshSources[source.mesh]).
The three material that draws a hit's triangle:
object.material[i]of its group (a folded mesh's from the triangle, a per-group instance's from its source), or the object's one material.sourceandmeshSourceare the hit instance's (sourceOf,meshSourceOforscene.meshSources[source.mesh]).