摘要：Geometry face modeling technique is basically a kind of important modeling application when proceeding space complex object construction. First, paper introduced rules for building VRML virtual face model, mainly IndexedFaceSet node’s function and its syntax format etc. Here we discussed some of IndexedFaceSet node’s elementary fields’ meaning, for example coord and coordIndex field, color and colorIndex field, also colorPerVertex field. ccw and solid are two fields distinguished greatly from IndexedLineSet node’s. Second, paper designed application examples for illustrating color rendering and object building method for VRML’s geometry face Model. Finally, paper pointed out that for any complex natural modeling object, we all can use VRML provided PointSet, IndexedLineSet, IndexedFaceSet, ElevationGrid and Extrusion node, as Shape modeling node’s geometry field value, for constructing.
