<table bgColor="#ffffff" border="0" width="100%"> <tbody> <tr> <td> <p> Triangles and quadrilaterals are fundamental geometry representations that are typically created by authoring tools to build complex polygonal meshes and shapes. </p> <p> Low-level high-performance nodes for geometry definition and fast rendering include <a href="https://www.web3d.org/x3d/content/X3dTooltips.html#TriangleSet" target="X3dTooltips" title="X3D Tooltip">TriangleSet</a>, <a href="https://www.web3d.org/x3d/content/X3dTooltips.html#TriangleFanSet" target="X3dTooltips" title="X3D Tooltip">TriangleFanSet</a>, <a href="https://www.web3d.org/x3d/content/X3dTooltips.html#TriangleStripSet" target="X3dTooltips" title="X3D Tooltip">TriangleStripSet</a>, <a href="https://www.web3d.org/x3d/content/X3dTooltips.html#IndexedTriangleSet" target="X3dTooltips" title="X3D Tooltip">IndexedTriangleSet</a>, <a href="https://www.web3d.org/x3d/content/X3dTooltips.html#IndexedTriangleFanSet" target="X3dTooltips" title="X3D Tooltip">IndexedTriangleFanSet</a>, <a href="https://www.web3d.org/x3d/content/X3dTooltips.html#IndexedTriangleStripSet" target="X3dTooltips" title="X3D Tooltip">IndexedTriangleStripSet</a>, <a href="https://www.web3d.org/x3d/content/X3dTooltips.html#QuadSet" target="X3dTooltips" title="X3D Tooltip">QuadSet</a> and <a href="https://www.web3d.org/x3d/content/X3dTooltips.html#IndexedQuadSet" target="X3dTooltips" title="X3D Tooltip">IndexedQuadSet</a>. Special definition rules apply to each node in order to best match underlying graphics hardware requirements. Each is placed individually inside a <a href="https://www.web3d.org/x3d/content/X3dTooltips.html#Shape" target="X3dTooltips" title="X3D Tooltip">Shape</a> node. </p> <p> The supporting <a href="https://x3dGraphics.com/slidesets/X3dForWebAuthors/Chapter13GeometryTrianglesQuadrilaterals.pdf" target="X3dChapterSlideset">Chapter&nbsp;13 slideset</a> and course videos (<a href="https://www.movesinstitute.org/Video/Courses/X3dForWebAuthors/X3dForWebAuthorsVideo.html#13" target="X3dChapterVideos">NPS</a>, <a href="https://www.youtube.com/playlist?list=PLuSIsM-86simfHMmPs_98xGwJ8es90TYy" target="X3dChapterYouTubeVideos">YouTube</a>) for <i>X3D for Web Authors</i> are available online via <a href="https://x3dGraphics.com" target="_blank">X3dGraphics.com</a>. </p> <p> Also available: <a href="https://www.web3d.org/x3d/content/examples/X3dSceneAuthoringHints.html#Meshes" target="_blank">X3D Scene Authoring Hints: Meshes</a>. </p> </td> <td align="left" cellpadding="10"> <a href="index.html"><img alt="Nonplanar Polygons" title="Nonplanar Polygons" border="0" hspace="10" src="NonplanarPolygons.png" width="190" height="102" align="left"/></a> </td> </tr> </tbody> </table>