Chapter6E, Geometry: IndexedFaceSet (IFS) and ElevationGrid
Channel: X3D for Web Authors
Date: 12/04/2016

Chapter6E, Geometry: IndexedFaceSet and ElevationGrid nodes.  Examples, slides online at http://x3dgraphics.com/examples/X3dForWebAuthors/Chapter06-GeometryPointsLinesPolygons