geometrybyreferencetest.java

java 3d编程的一些例子源代码

/*
 * $RCSfile: GeometryByReferenceTest.java,v $
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 * $Date: 2006/02/01 01:32:36 $
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package org.jdesktop.j3d.examples.geometry_by_ref;

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;
import com.sun.j3d.utils.behaviors.vp.*;

public class GeometryByReferenceTest extends JApplet implements ActionListener,
GeometryUpdater {

    RenderingAttributes ra;
    ColoringAttributes ca;
    Material mat;			   
    Appearance app;			   
    JComboBox geomType;
    JComboBox vertexType;
    JComboBox colorType;
    JCheckBox transparency;
    JComboBox updates;
    Shape3D shape;			   
    TransparencyAttributes transp;
    int updateIndex = 0;
    int colorCount = 0, vertexCount = 0;
    int vertexIndex = 0, colorIndex = 0;
    
    GeometryArray tetraRegular, tetraStrip, tetraIndexed, tetraIndexedStrip;
    GeometryArray[] geoArrays = new GeometryArray[4];		   

    private static final float sqrt3 = (float) Math.sqrt(3.0);
    private static final float sqrt3_3 = sqrt3 / 3.0f;
    private static final float sqrt24_3 = (float) Math.sqrt(24.0) / 3.0f;

    private static final float ycenter = 0.5f * sqrt24_3;
    private static final float zcenter = -sqrt3_3;

    private static final Point3f p1 = 
	new Point3f(-1.0f, -ycenter, -zcenter);
    private static final Point3f p2 = 
	new Point3f(1.0f, -ycenter, -zcenter);
    private static final Point3f p3 =
	new Point3f(0.0f, -ycenter, -sqrt3 - zcenter);
    private static final Point3f p4 =
	new Point3f(0.0f, sqrt24_3 - ycenter, 0.0f);


    private static final float[] floatVerts = {
	p1.x, p1.y, p1.z, // front face
	p2.x, p2.y, p2.z,
	p4.x, p4.y, p4.z,
	
	p1.x, p1.y, p1.z,// left, back face
	p4.x, p4.y, p4.z,
	p3.x, p3.y, p3.z,
	
	p2.x, p2.y, p2.z,// right, back face
	p3.x, p3.y, p3.z,
	p4.x, p4.y, p4.z,
	
	p1.x, p1.y, p1.z,// bottom face
	p3.x, p3.y, p3.z,
	p2.x, p2.y, p2.z,
    };
    
    private static final Color3f c1 = new Color3f(0.6f, 0.0f, 0.0f);
    private static final Color3f c2 = new Color3f(0.0f, 0.6f, 0.0f);
    private static final Color3f c3 = new Color3f(0.0f, 0.6f, 0.6f);
    private static final Color3f c4 = new Color3f(0.6f, 0.6f, 0.0f);


    private static final float[] floatClrs = {
	c1.x, c1.y, c1.z, // front face
	c2.x, c2.y, c2.z,
	c4.x, c4.y, c4.z,
	
	c1.x, c1.y, c1.z,// left, back face
	c4.x, c4.y, c4.z,
	c3.x, c3.y, c3.z,
	
	c2.x, c2.y, c2.z,// right, back face
	c3.x, c3.y, c3.z,
	c4.x, c4.y, c4.z,
	
	c1.x, c1.y, c1.z,// bottom face
	c3.x, c3.y, c3.z,
	c2.x, c2.y, c2.z,
    }    ;

    private static final float[] indexedFloatVerts = {
	p1.x,p1.y,p1.z,
	p2.x,p2.y,p2.z,
	p3.x,p3.y,p3.z,
	p4.x,p4.y,p4.z,

    };
    private static final float[] indexedFloatClrs = {
	c1.x,c1.y,c1.z,
	c2.x,c2.y,c2.z,
	c3.x,c3.y,c3.z,
	c4.x,c4.y,c4.z,
    };
   private static final Point3f[] p3fVerts = {
	p1, p2, p4, p1, p4, p3, p2, p3, p4, p1, p3, p2};

    private static final Point3f[] indexedP3fVerts = {p1, p2, p3, p4};
    
    private static final Color3f[] c3fClrs = {
	c1, c2, c4, c1, c4, c3, c2, c3, c4, c1, c3, c2};

    private static final Color3f[] indexedC3fClrs = {c1, c2, c3, c4};

    
    private static final int[] indices = {0,1,3,0,3,2,1,2,3,0,2,1};
    private int[] stripVertexCounts = {3,3,3,3};

    private SimpleUniverse u;

   BranchGroup createSceneGraph() {
	BranchGroup objRoot = new BranchGroup();

	// Set up attributes to render lines
        app = new Appearance();

	transp = new TransparencyAttributes();
	transp.setTransparency(0.5f);
	transp.setCapability(TransparencyAttributes.ALLOW_MODE_WRITE);
	transp.setTransparencyMode(TransparencyAttributes.NONE);
	app.setTransparencyAttributes(transp);
	
	tetraRegular = createGeometry(1);
	tetraStrip =createGeometry(2);
	tetraIndexed = createGeometry(3);
	tetraIndexedStrip = createGeometry(4);

	geoArrays[0] = tetraRegular;
	geoArrays[1] = tetraStrip;
	geoArrays[2] = tetraIndexed;
	geoArrays[3] = tetraIndexedStrip;
	
	shape = new Shape3D(tetraRegular, app);
	shape.setCapability(Shape3D.ALLOW_GEOMETRY_WRITE);
	shape.setCapability(Shape3D.ALLOW_GEOMETRY_READ);

	Transform3D t = new Transform3D();
	// move the object upwards
	t.set(new Vector3f(0.0f, 0.3f, 0.0f));

	// rotate the shape
	Transform3D temp = new Transform3D();
        temp.rotX(Math.PI/4.0d);
	t.mul(temp);
        temp.rotY(Math.PI/4.0d);
        t.mul(temp);
	
	// Shrink the object 
	t.setScale(0.6);

	TransformGroup trans = new TransformGroup(t);
	trans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
	trans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);

	objRoot.addChild(trans);
	trans.addChild(shape);

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

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

	return objRoot;
    }

    JPanel createGeometryByReferencePanel() {
	JPanel panel = new JPanel();
	panel.setBorder(new TitledBorder("Geometry Type"));

	String values[] = {"Array", "Strip", "Indexed", "IndexedStrip"};
	geomType = new JComboBox(values);
	geomType.setLightWeightPopupEnabled(false);
	geomType.addActionListener(this);
	geomType.setSelectedIndex(0);
	panel.add(new JLabel("Geometry Type")); 	
	panel.add(geomType);


	String vertex_types[] = { "Float","P3F"};

	vertexType = new JComboBox(vertex_types);
	vertexType.setLightWeightPopupEnabled(false);
	vertexType.addActionListener(this);
	vertexType.setSelectedIndex(0);
	panel.add(new JLabel("VertexType")); 	
	panel.add(vertexType);


	String color_types[] = { "Float","C3F"};

	colorType = new JComboBox(color_types);
	colorType.setLightWeightPopupEnabled(false);
	colorType.addActionListener(this);
	colorType.setSelectedIndex(0);
	panel.add(new JLabel("ColorType")); 	
	panel.add(colorType);
	



	return panel;
    }

    JPanel createUpdatePanel() {

	JPanel panel = new JPanel();
	panel.setBorder(new TitledBorder("Other Attributes"));