IRIX 6.5 Applications 2004 May/SGI IRIX 6.5 Applications 2004 May.iso/dist/java3d.idb/usr/demos/java/j3d/programs/examples/AppearanceMixed/AppearanceMixed.java.z/AppearanceMixed.java

Java Source | 2003-08-08 | 14.0 KB | 502 lines

/*
 *    @(#)AppearanceMixed.java 1.23 02/10/21 13:37:08
 *
 * Copyright (c) 1996-2002 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * - Redistribution in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 *
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN
 * OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR
 * FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
 * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF
 * LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE SOFTWARE,
 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 *
 * You acknowledge that Software is not designed,licensed or intended
 * for use in the design, construction, operation or maintenance of
 * any nuclear facility.
 */

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import java.awt.GraphicsConfiguration;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.image.TextureLoader;
import com.sun.j3d.utils.geometry.ColorCube;
import javax.media.j3d.*;
import javax.vecmath.*;

public class AppearanceMixed extends Applet {

    private java.net.URL bgImage;
    private java.net.URL texImage;

    private SimpleUniverse u = null;

    static class MyCanvas3D extends Canvas3D {
    private GraphicsContext3D gc;

    private static final int vertIndices[] = { 0, 1, 2, 0, 2, 3 };
    private static final int normalIndices[] = { 0, 0, 0, 1, 1, 1 };
    private IndexedTriangleArray tri =
        new IndexedTriangleArray(4, IndexedTriangleArray.COORDINATES |
                     IndexedTriangleArray.NORMALS, 6);

    private Point3f vert[] = {
        new Point3f(-0.12f, -0.12f, 0.0f),
        new Point3f( 0.12f, -0.12f, 0.0f),
        new Point3f( 0.12f,  0.12f, 0.0f),
        new Point3f(-0.12f,  0.12f, 0.0f),
    };

    private Point3f min[] = {
        new Point3f(-0.24f, -0.24f, -0.20f),
        new Point3f( 0.04f, -0.28f, -0.24f),
        new Point3f( 0.00f,  0.00f, -0.24f),
        new Point3f(-0.32f,  0.08f, -0.20f),
    };

    private Point3f max[] = {
        new Point3f(-0.04f, -0.04f, 0.12f),
        new Point3f( 0.32f, -0.04f, 0.16f),
        new Point3f( 0.36f,  0.28f, 0.20f),
        new Point3f(-0.04f,  0.24f, 0.16f),
    };

    private Point3f delta[] = {
        new Point3f(-0.0021f, -0.0017f,  0.0014f),
        new Point3f( 0.0025f, -0.0013f, -0.0018f),
        new Point3f( 0.0021f,  0.0017f,  0.0018f),
        new Point3f(-0.0025f,  0.0013f, -0.0014f),
    };

    private Vector3f normals[];
    private Vector3f v01 = new Vector3f();
    private Vector3f v02 = new Vector3f();
    private Vector3f v03 = new Vector3f();

    public void renderField(int fieldDesc) {
        computeVert();
        computeNormals();
        gc.draw(tri);
    }

    private void computeVert() {
        for (int i = 0; i < 4; i++) {
        vert[i].add(delta[i]);
        if (vert[i].x > max[i].x) {
            vert[i].x = max[i].x;
            delta[i].x *= -1.0f;
        }
        if (vert[i].x < min[i].x) {
            vert[i].x = min[i].x;
            delta[i].x *= -1.0f;
        }
        if (vert[i].y > max[i].y) {
            vert[i].y = max[i].y;
            delta[i].y *= -1.0f;
        }
        if (vert[i].y < min[i].y) {
            vert[i].y = min[i].y;
            delta[i].y *= -1.0f;
        }
        if (vert[i].z > max[i].z) {
            vert[i].z = max[i].z;
            delta[i].z *= -1.0f;
        }
        if (vert[i].z < min[i].z) {
            vert[i].z = min[i].z;
            delta[i].z *= -1.0f;
        }
        }
        tri.setCoordinates(0, vert);
    }

    private void computeNormals() {
        v01.sub(vert[1], vert[0]);
        v02.sub(vert[2], vert[0]);
        v03.sub(vert[3], vert[0]);
        normals[0].cross(v01, v02);
        normals[0].normalize();
        normals[1].cross(v02, v03);
        normals[1].normalize();
        tri.setNormals(0, normals);
    }

    public MyCanvas3D(GraphicsConfiguration gcfg) {
        super(gcfg);

        // Allocate memory for normals
        normals = new Vector3f[2];
        normals[0] = new Vector3f();
        normals[1] = new Vector3f();

        // Set up the indices
        tri.setCoordinateIndices(0, vertIndices);
        tri.setNormalIndices(0, normalIndices);

        // Set up the graphics context
        gc = getGraphicsContext3D();

        // Create the appearance for the triangle fan
        Appearance app = new Appearance();
        Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
        Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
        Color3f objColor = new Color3f(0.0f, 0.0f, 0.8f);
        app.setMaterial(new Material(objColor, black, objColor,
                     white, 80.0f));
        gc.setAppearance(app);

        // Set up the global lights
        Color3f lColor1 = new Color3f(0.7f, 0.7f, 0.7f);
        Vector3f lDir1  = new Vector3f(-1.0f, -1.0f, -1.0f);
        Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f);
        gc.addLight(new AmbientLight(alColor));
        gc.addLight(new DirectionalLight(lColor1, lDir1));
    }
    }


    private BranchGroup createSceneGraph() {
    // Create the root of the branch graph
    BranchGroup objRoot = new BranchGroup();

    // Create a bounds for the background and lights
    BoundingSphere bounds =
        new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);

    // Set up the background
    TextureLoader bgTexture = new TextureLoader(bgImage, this);
    Background bg = new Background(bgTexture.getImage());
    bg.setApplicationBounds(bounds);
    objRoot.addChild(bg);

    // Set up the global lights
    Color3f lColor1 = new Color3f(0.7f, 0.7f, 0.7f);
    Vector3f lDir1  = new Vector3f(-1.0f, -1.0f, -1.0f);
    Color3f alColor = new Color3f(0.2f, 0.2f, 0.2f);

    AmbientLight aLgt = new AmbientLight(alColor);
    aLgt.setInfluencingBounds(bounds);
    DirectionalLight lgt1 = new DirectionalLight(lColor1, lDir1);
    lgt1.setInfluencingBounds(bounds);
    objRoot.addChild(aLgt);
    objRoot.addChild(lgt1);

    // Create a bunch of objects with a behavior and add them
    // into the scene graph.

    int row, col;
    Appearance[][] app = new Appearance[3][3];

    for (row = 0; row < 3; row++)
        for (col = 0; col < 3; col++)
        app[row][col] = createAppearance(row * 3 + col);

    for (int i = 0; i < 3; i++) {
        double ypos = (double)(i - 1) * 0.6;
        for (int j = 0; j < 3; j++) {
        double xpos = (double)(j - 1) * 0.6;
        objRoot.addChild(createObject(app[i][j], 0.12,  xpos, ypos));
        }
    }

        // Let Java 3D perform optimizations on this scene graph.
        objRoot.compile();

    return objRoot;
    }


    private Appearance createAppearance(int idx) {
    Appearance app = new Appearance();

    // Globally used colors
    Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
    Color3f white = new Color3f(1.0f, 1.0f, 1.0f);

    switch (idx) {
    // Unlit solid
    case 0:
        {
        // Set up the coloring properties
        Color3f objColor = new Color3f(1.0f, 0.2f, 0.4f);
        ColoringAttributes ca = new ColoringAttributes();
        ca.setColor(objColor);
        app.setColoringAttributes(ca);
        break;
        }


    // Unlit wire frame
    case 1:
        {
        // Set up the coloring properties
        Color3f objColor = new Color3f(0.5f, 0.0f, 0.2f);
        ColoringAttributes ca = new ColoringAttributes();
        ca.setColor(objColor);
        app.setColoringAttributes(ca);

        // Set up the polygon attributes
        PolygonAttributes pa = new PolygonAttributes();
        pa.setPolygonMode(pa.POLYGON_LINE);
        pa.setCullFace(pa.CULL_NONE);
        app.setPolygonAttributes(pa);
        break;
        }

    // Unlit points
    case 2:
        {
        // Set up the coloring properties
        Color3f objColor = new Color3f(0.2f, 0.2f, 1.0f);
        ColoringAttributes ca = new ColoringAttributes();
        ca.setColor(objColor);
        app.setColoringAttributes(ca);

        // Set up the polygon attributes
        PolygonAttributes pa = new PolygonAttributes();
        pa.setPolygonMode(pa.POLYGON_POINT);
        pa.setCullFace(pa.CULL_NONE);
        app.setPolygonAttributes(pa);

        // Set up point attributes
        PointAttributes pta = new PointAttributes();
        pta.setPointSize(5.0f);
        app.setPointAttributes(pta);
        break;
        }

    // Lit solid
    case 3:
        {
        // Set up the material properties
        Color3f objColor = new Color3f(0.8f, 0.0f, 0.0f);
        app.setMaterial(new Material(objColor, black, objColor,
                         white, 80.0f));
        break;
        }

    // Texture mapped, lit solid
    case 4:
        {
        // Set up the texture map
        TextureLoader tex = new TextureLoader(texImage, this);
        app.setTexture(tex.getTexture());

         TextureAttributes texAttr = new TextureAttributes();
         texAttr.setTextureMode(TextureAttributes.MODULATE);
         app.setTextureAttributes(texAttr);


        // Set up the material properties
        app.setMaterial(new Material(white, black, white, black, 1.0f));
        break;
        }

    // Transparent, lit solid
    case 5:
        {
        // Set up the transparency properties
        TransparencyAttributes ta = new TransparencyAttributes();
        ta.setTransparencyMode(ta.BLENDED);
        ta.setTransparency(0.6f);
        app.setTransparencyAttributes(ta);

        // Set up the polygon attributes
        PolygonAttributes pa = new PolygonAttributes();
        pa.setCullFace(pa.CULL_NONE);
        app.setPolygonAttributes(pa);

        // Set up the material properties
        Color3f objColor = new Color3f(0.7f, 0.8f, 1.0f);
        app.setMaterial(new Material(objColor, black, objColor,
                         black, 1.0f));
        break;
        }

    // Lit solid, no specular
    case 6:
        {
        // Set up the material properties
        Color3f objColor = new Color3f(0.8f, 0.0f, 0.0f);
        app.setMaterial(new Material(objColor, black, objColor,
                         black, 80.0f));
        break;
        }

    // Lit solid, specular only
    case 7:
        {
        // Set up the material properties
        Color3f objColor = new Color3f(0.8f, 0.0f, 0.0f);
        app.setMaterial(new Material(black, black, black,
                         white, 80.0f));
        break;
        }

    // Another lit solid with a different color
    case 8:
        {
        // Set up the material properties
        Color3f objColor = new Color3f(0.8f, 0.8f, 0.0f);
        app.setMaterial(new Material(objColor, black, objColor,
                         white, 80.0f));
        break;
        }

    default:
        {
        ColoringAttributes ca = new ColoringAttributes();
        ca.setColor(new Color3f(0.0f, 1.0f, 0.0f));
        app.setColoringAttributes(ca);
        }
    }

    return app;
    }


    private Group createObject(Appearance app, double scale,
                   double xpos, double ypos) {

    // Create a transform group node to scale and position the object.
    Transform3D t = new Transform3D();
    t.set(scale, new Vector3d(xpos, ypos, 0.0));
    TransformGroup objTrans = new TransformGroup(t);

    // Create a second transform group node and initialize it to the
    // identity.  Enable the TRANSFORM_WRITE capability so that
    // our behavior code can modify it at runtime.
    TransformGroup spinTg = new TransformGroup();
    spinTg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

    // Create a simple shape leaf node and set the appearance
    Shape3D shape = new Tetrahedron();
    shape.setAppearance(app);

    // add it to the scene graph.
    spinTg.addChild(shape);

    // Create a new Behavior object that will perform the desired
    // operation on the specified transform object and add it into
    // the scene graph.
    Transform3D yAxis = new Transform3D();
    Alpha rotationAlpha = new Alpha(-1, Alpha.INCREASING_ENABLE,
                    0, 0,
                    5000, 0, 0,
                    0, 0, 0);

    RotationInterpolator rotator =
        new RotationInterpolator(rotationAlpha, spinTg, yAxis,
                     0.0f, (float) Math.PI*2.0f);

    BoundingSphere bounds =
        new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);

    rotator.setSchedulingBounds(bounds);

    // Add the behavior and the transform group to the object
    objTrans.addChild(rotator);
    objTrans.addChild(spinTg);

    return objTrans;
    }


    public AppearanceMixed() {
    }

    public AppearanceMixed(java.net.URL bgurl, java.net.URL texurl) {
        bgImage = bgurl;
    texImage = texurl;
    }
    public void init() {
        if (bgImage == null) {
          // the path to the image for an applet
        try {
            bgImage = new java.net.URL(getCodeBase().toString() +
                       "../images/bg.jpg");
        }
        catch (java.net.MalformedURLException ex) {
            System.out.println(ex.getMessage());
        System.exit(1);
        }
    }

    if (texImage == null) {
        // the path to the image for an applet
          try {
            texImage = new java.net.URL(getCodeBase().toString() +
                        "../images/apimage.jpg");
        }
        catch (java.net.MalformedURLException ex) {
            System.out.println(ex.getMessage());
        System.exit(1);
        }
    }
    setLayout(new BorderLayout());
        GraphicsConfiguration config =
           SimpleUniverse.getPreferredConfiguration();

        MyCanvas3D c = new MyCanvas3D(config);
    add("Center", c);

    // Create a simple scene and attach it to the virtual universe
    BranchGroup scene = createSceneGraph();
    u = new SimpleUniverse(c);

        // This will move the ViewPlatform back a bit so the
        // objects in the scene can be viewed.
        u.getViewingPlatform().setNominalViewingTransform();

    u.addBranchGraph(scene);
    }

    public void destroy() {
    u.cleanup();
    }


    //
    // The following allows AppearanceMixed to be run as an application
    // as well as an applet
    //
    public static void main(String[] args) {
        // the path to the image file for an application
    java.net.URL bgurl = null;
    java.net.URL texurl = null;
    try {
        bgurl = new java.net.URL("file:../images/bg.jpg");
        texurl = new java.net.URL("file:../images/apimage.jpg");
    }
    catch (java.net.MalformedURLException ex) {
        System.out.println(ex.getMessage());
        System.exit(1);
    }
    new MainFrame(new AppearanceMixed(bgurl, texurl), 700, 700);
    }
}