<table border="0" width="100%"> <tbody> <tr> <td align="left"> <p> Grouping nodes are used to group shapes to compose complex shapes. <ul> <li> The Switch node creates a switched group where only one child node in the group is displayed, children implicitly numbered from 0 and a whichChoice value of -1 selects no children. </li> <li> Transform creates a group with its own coordinate system where every child node in the group is displayed. </li> <li> Billboard creates a group with a special coordinate system that turns to face the viewer. </li> </ul> </p> <p> These X3D scenes are adapted directly from the <a href="http://www.wiley.com/legacy/compbooks/vrml2sbk/toc/ch11.htm" target="_Vrml2Sourcebook">original VRML 2.0 Sourcebook chapter examples</a>. Also available: <a href="http://www.sdsc.edu/~moreland/courses/Siggraph98/vrml97/slides/mt0084.htm" target="_Vrml2SourcebookCourse">Introduction to VRML97 SIGGRAPH98 course notes</a>. </p> </td> <td align="center" rowspan="2"> <p> <a href="index.html"><img border="0" alt="Figure 11.2 Cafe Sign Billboard" title="Figure 11.2 Cafe Sign Billboard" hspace="10" src="_viewpoints/Figure11_2CafeSignBillboard.x3d._VP_Cafe_sign_Billboard_view_from_corner.png" width="156" height="89" align="middle"/></a> </p> <p> <a href="index.html"><img border="0" alt="Figure 11.3 Bounding Box" title="Figure 11.3 Bounding Box" hspace="10" src="_viewpoints/Figure11_3BoundingBox.x3d._VP_A_group_of_shapes_within_a_bounding_box..png" width="156" height="89" align="middle"/></a> </p> </td> </tr> </tbody> </table>