<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE X3D PUBLIC "ISO//Web3D//DTD X3D 3.3//EN" "https://www.web3d.org/specifications/x3d-3.3.dtd">
<X3D profile='Interchange' version='3.3' xmlns:xsd='http://www.w3.org/2001/XMLSchema-instance' xsd:noNamespaceSchemaLocation='https://www.web3d.org/specifications/x3d-3.3.xsd'>
  <head>
    <meta content='NonplanarPolygons.x3d' name='title'/>
    <meta content='Illustration of nonplanar polygons.' name='description'/>
    <meta content='22 May 2006' name='created'/>
    <meta content='20 October 2019' name='modified'/>
    <meta content='Leonard Daly and Don Brutzman' name='creator'/>
    <meta content='NonplanarPolygons.png' name='Image'/>
    <meta content='https://X3dGraphics.com' name='reference'/>
    <meta content='https://www.web3d.org/x3d/content/examples/X3dResources.html' name='reference'/>
    <meta content='Copyright 2006, Daly Realism and Don Brutzman' name='rights'/>
    <meta content='X3D book, X3D graphics, X3D-Edit, http://www.x3dGraphics.com' name='subject'/>
    <meta content='https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter13GeometryTrianglesQuadrilaterals/NonplanarPolygons.x3d' name='identifier'/>
    <meta content='X3D-Edit 3.3, https://www.web3d.org/x3d/tools/X3D-Edit' name='generator'/>
    <meta content='../license.html' name='license'/>
  </head>
  <Scene>
    <WorldInfo title='NonplanarPolygons.x3d'/>
    <Viewpoint description='Initial'/>
    <Viewpoint description='Book View' orientation='0 -1 0 0.1' position='-0.71 -0.52 8.9'/>
    <Background skyColor='1 1 1'/>
    <NavigationInfo headlight='false'/>
    <DirectionalLight direction='0 -1 0'/>
    <Transform translation='0 2 0'>
      <Transform translation='-2 0 0'>
        <Shape DEF='SimplePoints'>
          <Appearance DEF='Black'>
            <Material diffuseColor='0 0 0' specularColor='1 0 0'/>
          </Appearance>
          <PointSet>
            <Coordinate DEF='Points' point='-1 -1 3 1 -2 3 1 -1 1 -1 -2 1'/>
          </PointSet>
        </Shape>
        <Group DEF='OutlineWithExaggeratedPoints'>
          <Shape>
            <Appearance USE='Black'/>
            <IndexedLineSet coordIndex='0 1 2 3 0 -1'>
              <Coordinate USE='Points'/>
            </IndexedLineSet>
          </Shape>
          <Transform translation='-1 -1 3'>
            <Shape>
              <Appearance USE='Black'/>
              <Sphere DEF='Ball' radius='.1'/>
            </Shape>
          </Transform>
          <Transform translation='1 -2 3'>
            <Shape>
              <Appearance USE='Black'/>
              <Sphere USE='Ball'/>
            </Shape>
          </Transform>
          <Transform translation='1 -1 1'>
            <Shape>
              <Appearance USE='Black'/>
              <Sphere USE='Ball'/>
            </Shape>
          </Transform>
          <Transform translation='-1 -2 1'>
            <Shape>
              <Appearance USE='Black'/>
              <Sphere USE='Ball'/>
            </Shape>
          </Transform>
        </Group>
      </Transform>
      <Transform translation='2 0 0'>
        <Group USE='OutlineWithExaggeratedPoints'/>
      </Transform>
    </Transform>
    <Transform translation='-2 0 0'>
      <Shape>
        <IndexedFaceSet coordIndex='0 1 2 -1 2 3 0 -1' creaseAngle='1.57' solid='false'>
          <Coordinate USE='Points'/>
        </IndexedFaceSet>
        <Appearance DEF='Look'>
          <Material/>
        </Appearance>
      </Shape>
    </Transform>
    <Transform translation='2 0 0'>
      <Shape>
        <IndexedFaceSet coordIndex='0 1 3 -1 1 2 3 -1' creaseAngle='1.57' solid='false'>
          <Coordinate USE='Points'/>
        </IndexedFaceSet>
        <Appearance USE='Look'/>
      </Shape>
    </Transform>
  </Scene>
</X3D>