<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">package X3dForWebAuthors.Chapter06GeometryPointsLinesPolygons;

import org.web3d.x3d.jsail.Core.*;
import org.web3d.x3d.jsail.EnvironmentalEffects.*;
import org.web3d.x3d.jsail.fields.*;
import org.web3d.x3d.jsail.Geometry3D.*;
import org.web3d.x3d.jsail.Grouping.*;
import org.web3d.x3d.jsail.Navigation.*;
import org.web3d.x3d.jsail.Rendering.*;
import org.web3d.x3d.jsail.Shape.*;
import org.web3d.x3d.jsail.Text.*;

// Javadoc metadata annotations follow, see below for X3DJSAIL Java source code.
/**
 * &lt;p&gt; Show how a single nonplanar quadrilateral can be tesselated in 2 different ways. &lt;/p&gt;
 &lt;p&gt; Related links: Catalog page &lt;a href="../../../Chapter06GeometryPointsLinesPolygons/ElevationGridNonPlanarQuadrilateralsIndex.html" target="_blank"&gt;ElevationGridNonPlanarQuadrilaterals&lt;/a&gt;,  source &lt;a href="../../../Chapter06GeometryPointsLinesPolygons/ElevationGridNonPlanarQuadrilaterals.java"&gt;ElevationGridNonPlanarQuadrilaterals.java&lt;/a&gt;, &lt;a href="https://www.web3d.org/x3d/content/examples/X3dResources.html" target="_blank"&gt;X3D Resources&lt;/a&gt;, &lt;a href="https://www.web3d.org/x3d/content/examples/X3dSceneAuthoringHints.html" target="_blank"&gt;X3D Scene Authoring Hints&lt;/a&gt;, and &lt;a href="https://www.web3d.org/x3d/content/X3dTooltips.html" target="_blank"&gt;X3D Tooltips&lt;/a&gt;. &lt;/p&gt;
	&lt;table style="color:black; border:0px solid; border-spacing:10px 0px;"&gt;
        &lt;caption&gt;Scene Meta Information&lt;/caption&gt;
		&lt;tr style="background-color:silver; border-color:silver;"&gt;
			&lt;td style="text-align:center; padding:10px 0px;"&gt;&lt;i&gt;meta tags&lt;/i&gt;&lt;/td&gt;
			&lt;td style="text-align:left;   padding:10px 0px;"&gt;&amp;nbsp; Document Metadata &lt;/td&gt;
		&lt;/tr&gt;

		&lt;tr&gt;
			&lt;td style="text-align:right; vertical-align: text-top;"&gt; &lt;i&gt; title &lt;/i&gt; &lt;/td&gt;
			&lt;td&gt; &lt;a href="../../../Chapter06GeometryPointsLinesPolygons/ElevationGridNonPlanarQuadrilaterals.x3d"&gt;ElevationGridNonPlanarQuadrilaterals.x3d&lt;/a&gt; &lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="text-align:right; vertical-align: text-top;"&gt; &lt;i&gt; description &lt;/i&gt; &lt;/td&gt;
			&lt;td&gt; Show how a single nonplanar quadrilateral can be tesselated in 2 different ways. &lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="text-align:right; vertical-align: text-top;"&gt; &lt;i&gt; creator &lt;/i&gt; &lt;/td&gt;
			&lt;td&gt; Don Brutzman &lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="text-align:right; vertical-align: text-top;"&gt; &lt;i&gt; contributor &lt;/i&gt; &lt;/td&gt;
			&lt;td&gt; U.S. Naval Postgraduate School (NPS) &lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="text-align:right; vertical-align: text-top;"&gt; &lt;i&gt; created &lt;/i&gt; &lt;/td&gt;
			&lt;td&gt; 28 August 2005 &lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="text-align:right; vertical-align: text-top;"&gt; &lt;i&gt; modified &lt;/i&gt; &lt;/td&gt;
			&lt;td&gt; 20 October 2019 &lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="text-align:right; vertical-align: text-top;"&gt; &lt;i&gt; identifier &lt;/i&gt; &lt;/td&gt;
			&lt;td&gt; &lt;a href="https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter06GeometryPointsLinesPolygons/ElevationGridNonPlanarQuadrilaterals.x3d" target="_blank"&gt;https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter06GeometryPointsLinesPolygons/ElevationGridNonPlanarQuadrilaterals.x3d&lt;/a&gt; &lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="text-align:right; vertical-align: text-top;"&gt; &lt;i&gt; generator &lt;/i&gt; &lt;/td&gt;
			&lt;td&gt; X3D-Edit 3.3, &lt;a href="https://savage.nps.edu/X3D-Edit" target="_blank"&gt;https://savage.nps.edu/X3D-Edit&lt;/a&gt; &lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr&gt;
			&lt;td style="text-align:right; vertical-align: text-top;"&gt; &lt;i&gt; license &lt;/i&gt; &lt;/td&gt;
			&lt;td&gt; &lt;a href="../../../Chapter06GeometryPointsLinesPolygons/../license.html"&gt;../license.html&lt;/a&gt; &lt;/td&gt;
		&lt;/tr&gt;
		&lt;tr style="background-color:silver; border-color:silver;"&gt;
			&lt;td style="text-align:center;" colspan="2"&gt;  &amp;nbsp; &lt;/td&gt;
		&lt;/tr&gt;
	&lt;/table&gt;

	&lt;p&gt;
		This program uses the
		&lt;a href="https://www.web3d.org/specifications/java/X3DJSAIL.html" target="_blank"&gt;X3D Java Scene Access Interface Library (X3DJSAIL)&lt;/a&gt;.
		It has been produced using the 
		&lt;a href="https://www.web3d.org/x3d/stylesheets/X3dToJava.xslt" target="_blank"&gt;X3dToJava.xslt&lt;/a&gt;
		stylesheet
	       (&lt;a href="https://sourceforge.net/p/x3d/code/HEAD/tree/www.web3d.org/x3d/stylesheets/X3dToJava.xslt" target="_blank"&gt;version control&lt;/a&gt;)
                which is used to create Java source code from an original &lt;code&gt;.x3d&lt;/code&gt; model.
	&lt;/p&gt;

	* @author Don Brutzman
 */

public class ElevationGridNonPlanarQuadrilaterals
{
	/** Default constructor to create this object. */
	public ElevationGridNonPlanarQuadrilaterals ()
	{
	  initialize();
	}

	/** Create and initialize the X3D model for this object. */
	public final void initialize()
	{
            try { // catch-all
  x3dModel = new X3D().setProfile(X3D.PROFILE_IMMERSIVE).setVersion(X3D.VERSION_3_3)
  .setHead(new head()
    .addMeta(new meta().setName(meta.NAME_TITLE      ).setContent("ElevationGridNonPlanarQuadrilaterals.x3d"))
    .addMeta(new meta().setName(meta.NAME_DESCRIPTION).setContent("Show how a single nonplanar quadrilateral can be tesselated in 2 different ways."))
    .addMeta(new meta().setName(meta.NAME_CREATOR    ).setContent("Don Brutzman"))
    .addMeta(new meta().setName(meta.NAME_CONTRIBUTOR).setContent("U.S. Naval Postgraduate School (NPS)"))
    .addMeta(new meta().setName(meta.NAME_CREATED    ).setContent("28 August 2005"))
    .addMeta(new meta().setName(meta.NAME_MODIFIED   ).setContent("20 October 2019"))
    .addMeta(new meta().setName(meta.NAME_IDENTIFIER ).setContent("https://www.web3d.org/x3d/content/examples/X3dForWebAuthors/Chapter06GeometryPointsLinesPolygons/ElevationGridNonPlanarQuadrilaterals.x3d"))
    .addMeta(new meta().setName(meta.NAME_GENERATOR  ).setContent("X3D-Edit 3.3, https://savage.nps.edu/X3D-Edit"))
    .addMeta(new meta().setName(meta.NAME_LICENSE    ).setContent("../license.html")))
  .setScene(new Scene()
    .addChild(new WorldInfo().setTitle("ElevationGridNonPlanarQuadrilaterals.x3d"))
    .addChild(new NavigationInfo("ExamineMode"))
    .addChild(new NavigationInfo("FlyPanNavigation").setType("\"FLY\" \"ANY\""))
    .addChild(new Background().setSkyColor(new MFColor(new double[] {1.0,1.0,1.0})))
    .addChild(new Viewpoint().setDescription("Book View").setOrientation(0.0,1.0,0.0,0.01).setPosition(0.13,0.2,7.71))
    .addChild(new Viewpoint("DefaultView").setDescription("ElevationGrid tessellation examples").setPosition(0.0,0.2,10.0))
    .addChild(new ROUTE().setFromNode("DefaultView").setFromField("isBound").setToNode("FlyPanNavigation").setToField("set_bind"))
    .addChild(new Transform().setTranslation(0.0,-0.75,0.0)
      .addChild(new Transform("FigureElevationGridBack").setTranslation(-4.0,0.0,0.0)
        .addComments(" Note that the base of each piece of polygonal geometry is based at (1 0 1) ")
        .addChild(new Viewpoint().setDescription("Default brower ElevationGrid tessellation, front view").setPosition(1.5,0.4,4.0))
        .addChild(new Transform().setCenter(1.0,0.0,1.0).setRotation(0.0,1.0,0.0,3.2)
          .addChild(new Group("DefaultElevationGrid")
            .addChild(new Shape("ExampleElevationGridShape")
              .setGeometry(new ElevationGrid().setSolid(false).setHeight(new double[] {0.0,0.5,0.0,0.0}))
              .setAppearance(new Appearance("DiffuseRedAppearance")
                .setMaterial(new Material().setDiffuseColor(0.9,0.1,0.1).setTransparency(0.1))))
            .addChild(new Transform("FigureLabelBrowserElevationGrid").setTranslation(0.5,1.0,0.5)
              .addChild(new Billboard()
                .addChild(new Shape()
                  .setGeometry(new Text().setString(new String[] {"Browser","ElevationGrid"})
                    .setFontStyle(new FontStyle("CenterFS").setJustify(FontStyle.JUSTIFY_MIDDLE_MIDDLE).setSize(0.25)))
                  .setAppearance(new Appearance("LabelAppearance")
                    .setMaterial(new Material().setDiffuseColor(0.2,0.1,0.8))))))
            .addChild(new Group("CommonFigureElements")
              .addChild(new Shape("QuadOutlineShape")
                .setGeometry(new IndexedLineSet().setColorPerVertex(false).setColorIndex(new int[] {0,0,0,0}).setCoordIndex(new int[] {0,1,3,2,0,-1})
                  .addComments(" first iterate on x-axis, then z-xis ")
                  .setCoord(new Coordinate("QuadrilateralPoints").setPoint(new MFVec3f(new double[] {0.0,0.0,0.0,1.0,0.5,0.0,0.0,0.0,1.0,1.0,0.0,1.0,1.0,0.0,0.0})))
                  .setColor(new Color("White").setColor(new MFColor(new double[] {1.0,1.0,1.0})))))
              .addChild(new Shape("FloorShape")
                .addComments(" setting all height values to zero is a simple way to get a square outline. A more efficient way is to use an IndexedFaceSet. ")
                .setGeometry(new ElevationGrid().setSolid(false))
                .setAppearance(new Appearance("TransparentGreyAppearance")
                  .setMaterial(new Material().setDiffuseColor(0.0,0.0,0.0).setTransparency(0.8))))
              .addChild(new Transform("PointLabels").setTranslation(0.0,-0.2,0.0)
                .addChild(new Billboard()
                  .addChild(new Shape()
                    .setGeometry(new Text().setString(new String[] {"h0"})
                      .setFontStyle(new FontStyle().setUSE("CenterFS")))
                    .setAppearance(new Appearance().setUSE("LabelAppearance"))))
                .addChild(new Transform().setTranslation(1.0,0.0,0.0)
                  .addChild(new Billboard()
                    .addChild(new Shape()
                      .setGeometry(new Text().setString(new String[] {"h1"})
                        .setFontStyle(new FontStyle().setUSE("CenterFS")))
                      .setAppearance(new Appearance().setUSE("LabelAppearance")))))
                .addChild(new Transform().setTranslation(0.0,0.0,1.0)
                  .addChild(new Billboard()
                    .addChild(new Shape()
                      .setGeometry(new Text().setString(new String[] {"h2"})
                        .setFontStyle(new FontStyle().setUSE("CenterFS")))
                      .setAppearance(new Appearance().setUSE("LabelAppearance")))))
                .addChild(new Transform().setTranslation(1.0,0.0,1.0)
                  .addChild(new Billboard()
                    .addChild(new Shape()
                      .setGeometry(new Text().setString(new String[] {"h3"})
                        .setFontStyle(new FontStyle().setUSE("CenterFS")))
                      .setAppearance(new Appearance().setUSE("LabelAppearance"))))))
              .addChild(new Shape("QuadVerticalLineShape")
                .setGeometry(new IndexedLineSet().setColorPerVertex(false).setColorIndex(new int[] {0,0,0,0}).setCoordIndex(new int[] {1,4,-1})
                  .setCoord(new Coordinate().setUSE("QuadrilateralPoints"))
                  .setColor(new Color().setUSE("White")))))
            .addChild(new Shape("QuadCrossDiagonalLineShape")
              .setGeometry(new IndexedLineSet().setColorPerVertex(false).setColorIndex(new int[] {0,0,0,0}).setCoordIndex(new int[] {2,1,-1})
                .setCoord(new Coordinate().setUSE("QuadrilateralPoints"))
                .setColor(new Color().setUSE("White"))))
            .addChild(new Shape("QuadCenterDiagonalLineShape")
              .setGeometry(new IndexedLineSet().setColorPerVertex(false).setColorIndex(new int[] {0,0,0,0}).setCoordIndex(new int[] {0,3,-1})
                .setCoord(new Coordinate().setUSE("QuadrilateralPoints"))
                .setColor(new Color().setUSE("White")))))))
      .addChild(new Transform("FigureElevationGridFront").setTranslation(-1.0,0.0,0.0)
        .addChild(new Viewpoint().setDescription("Default brower ElevationGrid tessellation, back view").setPosition(0.5,0.4,4.0))
        .addChild(new Transform().setCenter(1.0,0.0,1.0).setRotation(0.0,1.0,0.0,0.8)
          .addChild(new Group().setUSE("DefaultElevationGrid"))))
      .addChild(new Transform("FigureIfsCenterDiagonal").setTranslation(1.0,0.0,0.0)
        .addChild(new Viewpoint().setDescription("Center-diagonal tessellation").setPosition(0.5,0.4,4.0))
        .addChild(new Transform().setCenter(1.0,0.0,1.0).setRotation(0.0,1.0,0.0,0.4)
          .addChild(new Shape()
            .setGeometry(new IndexedFaceSet().setCoordIndex(new int[] {0,3,1,-1,0,2,3,-1})
              .setCoord(new Coordinate().setUSE("QuadrilateralPoints")))
            .setAppearance(new Appearance().setUSE("DiffuseRedAppearance")))
          .addChild(new Transform("FigureLabelCenterDiagonalTessellation").setTranslation(0.5,1.0,0.5)
            .addChild(new Billboard()
              .addChild(new Shape()
                .setGeometry(new Text().setString(new String[] {"Center Diagonal","Tessellation"})
                  .setFontStyle(new FontStyle().setUSE("CenterFS")))
                .setAppearance(new Appearance().setUSE("LabelAppearance")))))
          .addChild(new Group().setUSE("CommonFigureElements"))
          .addChild(new Shape().setUSE("QuadCenterDiagonalLineShape"))))
      .addChild(new Transform("FigureIfsCrossDiagonal").setTranslation(3.0,0.0,0.0)
        .addChild(new Viewpoint().setDescription("Cross-diagonal tessellation").setPosition(0.5,0.4,4.0))
        .addChild(new Transform().setCenter(1.0,0.0,1.0)
          .addChild(new Shape()
            .setGeometry(new IndexedFaceSet().setCoordIndex(new int[] {0,2,1,-1,2,3,1,-1})
              .setCoord(new Coordinate().setUSE("QuadrilateralPoints")))
            .setAppearance(new Appearance().setUSE("DiffuseRedAppearance")))
          .addChild(new Transform("FigureLabelCrossDiagonalTessellation").setTranslation(0.5,1.0,0.5)
            .addChild(new Billboard()
              .addChild(new Shape()
                .setGeometry(new Text().setString(new String[] {"Cross Diagonal","Tessellation"})
                  .setFontStyle(new FontStyle().setUSE("CenterFS")))
                .setAppearance(new Appearance().setUSE("LabelAppearance")))))
          .addChild(new Group().setUSE("CommonFigureElements"))
          .addChild(new Shape().setUSE("QuadCrossDiagonalLineShape"))))));
            }
            catch (Exception ex)
            {       
                System.err.println ("*** Further hints on X3DJSAIL errors and exceptions at");
                System.err.println ("*** https://www.web3d.org/specifications/java/X3DJSAIL.html");
                throw (ex);
            }
	}
	// end of initialize() method

	/** The initialized model object, created within initialize() method. */
	private X3D x3dModel;

	/** 
	 * Provide a 
	 * &lt;a href="https://dzone.com/articles/java-copy-shallow-vs-deep-in-which-you-will-swim" target="_blank"&gt;shallow copy&lt;/a&gt;
	 * of the X3D model.
	 * @see &lt;a href="https://www.web3d.org/specifications/java/javadoc/org/web3d/x3d/jsail/Core/X3D.html"&gt;X3D&lt;/a&gt;
	 * @return ElevationGridNonPlanarQuadrilaterals model
	 */
	public X3D getX3dModel()
	{	  
		return x3dModel;
	}
	   
    /** 
     * Default main() method provided for test purposes, uses CommandLine to set global ConfigurationProperties for this object.
     * @param args array of input parameters, provided as arguments
     * @see &lt;a href="https://www.web3d.org/specifications/java/javadoc/org/web3d/x3d/jsail/Core/X3D.html#handleArguments-java.lang.String:A-"&gt;X3D.handleArguments(args)&lt;/a&gt;
     * @see &lt;a href="https://www.web3d.org/specifications/java/javadoc/org/web3d/x3d/jsail/Core/X3D.html#validationReport--"&gt;X3D.validationReport()&lt;/a&gt;
     * @see &lt;a href="https://www.web3d.org/specifications/java/javadoc/org/web3d/x3d/jsail/CommandLine.html"&gt;CommandLine&lt;/a&gt;
     * @see &lt;a href="https://www.web3d.org/specifications/java/javadoc/org/web3d/x3d/jsail/CommandLine.html#USAGE"&gt;CommandLine.USAGE&lt;/a&gt;
     * @see &lt;a href="https://www.web3d.org/specifications/java/javadoc/org/web3d/x3d/jsail/ConfigurationProperties.html"&gt;ConfigurationProperties&lt;/a&gt;
     */
    public static void main(String args[])
    {
        System.out.println("Build this X3D model, showing validation diagnostics...");
        X3D thisExampleX3dModel = new ElevationGridNonPlanarQuadrilaterals().getX3dModel();
//      System.out.println("X3D model construction complete.");
	
        // next handle command line arguments
        boolean hasArguments = (args != null) &amp;&amp; (args.length &gt; 0);
        boolean validate = true; // default
        boolean argumentsLoadNewModel = false;
        String  fileName = new String();

        if (args != null)
        {
                for (String arg : args)
                {
                        if (arg.toLowerCase().startsWith("-v") || arg.toLowerCase().contains("validate"))
                        {
                                validate = true; // making sure
                        }
                        if (arg.toLowerCase().endsWith(X3D.FILE_EXTENSION_X3D) ||
                                arg.toLowerCase().endsWith(X3D.FILE_EXTENSION_CLASSICVRML) ||
                                arg.toLowerCase().endsWith(X3D.FILE_EXTENSION_X3DB) ||
                                arg.toLowerCase().endsWith(X3D.FILE_EXTENSION_VRML97) ||
                                arg.toLowerCase().endsWith(X3D.FILE_EXTENSION_EXI) ||
                                arg.toLowerCase().endsWith(X3D.FILE_EXTENSION_GZIP) ||
                                arg.toLowerCase().endsWith(X3D.FILE_EXTENSION_ZIP) ||
                                arg.toLowerCase().endsWith(X3D.FILE_EXTENSION_HTML) ||
                                arg.toLowerCase().endsWith(X3D.FILE_EXTENSION_XHTML))
                        {
                                argumentsLoadNewModel = true;
                                fileName = arg;
                        }
                }
        }
        if      (argumentsLoadNewModel)
                System.out.println("WARNING: \"X3dForWebAuthors.Chapter06GeometryPointsLinesPolygons.ElevationGridNonPlanarQuadrilaterals\" model invocation is attempting to load file \"" + fileName + "\" instead of simply validating itself... file loading ignored.");
        else if (hasArguments) // if no arguments provided, this method produces usage warning
                thisExampleX3dModel.handleArguments(args);
	
        if (validate)
        {
            //  System.out.println("--- TODO fix duplicated outputs ---"); // omit when duplicated outputs problem is solved/refactored
		String validationResults = thisExampleX3dModel.validationReport();
            //  System.out.println("-----------------------------------"); // omit when duplicated outputs problem is solved/refactored
                System.out.print("X3dForWebAuthors.Chapter06GeometryPointsLinesPolygons.ElevationGridNonPlanarQuadrilaterals self-validation test confirmation: ");
                if (!validationResults.equals("success"))
                    System.out.println();
                System.out.println(validationResults.trim());

                // experimental: test X3DJSAIL output files
                // Chapter06GeometryPointsLinesPolygons/ElevationGridNonPlanarQuadrilaterals_JavaExport.* file validation is checked when building X3D Example Archives
                String filenameX3D  = "Chapter06GeometryPointsLinesPolygons/ElevationGridNonPlanarQuadrilaterals_JavaExport.x3d"; 
                String filenameX3DV = "Chapter06GeometryPointsLinesPolygons/ElevationGridNonPlanarQuadrilaterals_JavaExport.x3dv"; 
                String filenameJSON = "Chapter06GeometryPointsLinesPolygons/ElevationGridNonPlanarQuadrilaterals_JavaExport.json";
                thisExampleX3dModel.toFileX3D        (filenameX3D);
                thisExampleX3dModel.toFileClassicVRML(filenameX3DV);
// TODO         thisExampleX3dModel.toFileJSON       (filenameJSON);
        }
    }
}
</pre></body></html>