appearancetest.java

java 3d编程的一些例子源代码

/*
 * $RCSfile: AppearanceTest.java,v $
 *
 * Copyright (c) 2006 Sun Microsystems, Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
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 *   distribution.
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 * 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 MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
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 * You acknowledge that this software is not designed, licensed or
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 * $Revision: 1.6 $
 * $Date: 2006/03/03 23:45:39 $
 * $State: Exp $
 */

package org.jdesktop.j3d.examples.appearance;

import com.sun.j3d.utils.image.TextureLoader;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import java.awt.GraphicsConfiguration;
import org.jdesktop.j3d.examples.Resources;

public class AppearanceTest extends javax.swing.JFrame {

    private java.net.URL texImage = null;
    private java.net.URL bgImage = null;
    private SimpleUniverse univ = null;
    private BranchGroup scene = null;

    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;
    }

    private Canvas3D createUniverse() {
	// Get the preferred graphics configuration for the default screen
	GraphicsConfiguration config =
	    SimpleUniverse.getPreferredConfiguration();

	// Create a Canvas3D using the preferred configuration
	Canvas3D c = new Canvas3D(config);

	// Create simple universe with view branch
	univ = new SimpleUniverse(c);

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

	// Ensure at least 5 msec per frame (i.e., < 200Hz)
	univ.getViewer().getView().setMinimumFrameCycleTime(5);

	return c;
    }

    /**
     * Creates new form AppearanceTest
     */
    public AppearanceTest() {

        if (bgImage == null) {
            // the path to the image for an applet
            bgImage = Resources.getResource("resources/images/bg.jpg");
            if (bgImage == null) {
                System.err.println("resources/images/bg.jpg not found");
                System.exit(1);
            }
        }
	
	if (texImage == null) {
            // the path to the image for an applet
            texImage = Resources.getResource("resources/images/stone.jpg");
            if (texImage == null) {
                System.err.println("resources/images/stone.jpg not found");
                System.exit(1);
            }
        }

	// Initialize the GUI components
	initComponents();

	// Create Canvas3D and SimpleUniverse; add canvas to drawing panel
	Canvas3D c = createUniverse();
	drawingPanel.add(c, java.awt.BorderLayout.CENTER);

	// Create the content branch and add it to the universe
	scene = createSceneGraph();
	univ.addBranchGraph(scene);
    }

    // ----------------------------------------------------------------
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
    private void initComponents() {
        drawingPanel = new javax.swing.JPanel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("AppearanceTest");
        drawingPanel.setLayout(new java.awt.BorderLayout());

        drawingPanel.setPreferredSize(new java.awt.Dimension(700, 700));
        getContentPane().add(drawingPanel, java.awt.BorderLayout.CENTER);

        pack();
    }// </editor-fold>//GEN-END:initComponents
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new AppearanceTest().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JPanel drawingPanel;
    // End of variables declaration//GEN-END:variables
    
}