1 | ccw convex solid creaseangle are shared by ElevationGrid Extrusion and IndexedFaceSet and are used to speed up and clarify rendering strategy for solids |
2 | ccw field defines whether the faces in the face set are indexed in counter clockwise order or not. (ignored if solid true) |
3 | convex field defines whether all the faces in the face set are convex or not. If faces are concave, then VRML splits them into convex faces before drawing them. |
4 | solid field if TRUE indicates that Shape encloses a volume and one can use so-called backface culling |
5 | creaseAngle field defines a crease angle threshold (in radians). Adjacent faces with an angle between them smaller than the crease-angle threshold are smoothly shaded to obscure the edge between them. |