interleavedniobuffer.java

java 3d编程的一些例子源代码

/*
 * $RCSfile: InterleavedNIOBuffer.java,v $
 *
 * Copyright (c) 2006 Sun Microsystems, Inc. All rights reserved.
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 * 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
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 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
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 * $Revision: 1.2 $
 * $Date: 2006/03/06 17:14:52 $
 * $State: Exp $
 */

package org.jdesktop.j3d.examples.geometry_by_ref;

import java.awt.*;
import java.awt.event.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import com.sun.j3d.utils.image.TextureLoader;
import javax.media.j3d.*;
import javax.vecmath.*;
import javax.swing.*;
import javax.swing.border.*;
import com.sun.j3d.utils.behaviors.vp.*;
import java.nio.*;
import org.jdesktop.j3d.examples.Resources;

public class InterleavedNIOBuffer extends JApplet implements ActionListener {

    RenderingAttributes ra;
    ColoringAttributes ca;
    Material mat;			   
    Appearance app;			   
    JComboBox geomType;
    JCheckBox transparency;
    JCheckBox textureBox;
    Shape3D shape;			   
    TransparencyAttributes transp;

    GeometryArray tetraRegular, tetraStrip, tetraIndexed, tetraIndexedStrip;
    GeometryArray[] geoArrays = new GeometryArray[4];

   // Globally used colors
   Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
   Color3f red = new Color3f(1.0f, 0.0f, 0.0f);
   Color3f green = new Color3f(0.0f, 1.0f, 0.0f);
   Color3f blue = new Color3f(0.0f, 0.0f, 1.0f);
   Color3f[] colors = {white, red, green, blue};			   

    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 Point2f t1 = new Point2f(0.0f, 0.0f);
    private static final Point2f t2 = new Point2f(0.5f, 1.0f);
    private static final Point2f t3 = new Point2f(1.0f, 0.0f);
    private static final Point2f t4 = new Point2f(1.0f, 1.0f);

    private static final Color3f c1 = new Color3f(1.0f, 0.0f, 0.0f);
    private static final Color3f c2 = new Color3f(0.0f, 1.0f, 0.0f);
    private static final Color3f c3 = new Color3f(0.0f, 1.0f, 1.0f);
    private static final Color3f c4 = new Color3f(1.0f, 1.0f, 0.0f);
    

    private static final float[] interleaved = {
	t1.x, t1.y,
	t1.x, t1.y,
	c1.x, c1.y, c1.z, // front face
	p1.x, p1.y, p1.z, // front face
	t2.x, t2.y,
	t2.x, t2.y,
	c2.x, c2.y, c2.z,
	p2.x, p2.y, p2.z,
	t4.x, t4.y,
	t4.x, t4.y,
	c4.x, c4.y, c4.z,
	p4.x, p4.y, p4.z,
	
	t1.x, t1.y,
	t1.x, t1.y,
	c1.x, c1.y, c1.z,// left, back face
	p1.x, p1.y, p1.z,// left, back face
	t4.x, t4.y,
	t4.x, t4.y,
	c4.x, c4.y, c4.z,
	p4.x, p4.y, p4.z,
	t3.x, t3.y,
	t3.x, t3.y,
	c3.x, c3.y, c3.z,
	p3.x, p3.y, p3.z,
	
	t2.x, t2.y,
	t2.x, t2.y,
	c2.x, c2.y, c2.z,// right, back face
	p2.x, p2.y, p2.z,// right, back face
	t3.x, t3.y,
	t3.x, t3.y,
	c3.x, c3.y, c3.z,
	p3.x, p3.y, p3.z,
	t4.x, t4.y,
	t4.x, t4.y,
	c4.x, c4.y, c4.z,
	p4.x, p4.y, p4.z,
	
	t1.x, t1.y,
	t1.x, t1.y,
	c1.x, c1.y, c1.z,// bottom face
	p1.x, p1.y, p1.z,// bottom face
	t3.x, t3.y,
	t3.x, t3.y,
	c3.x, c3.y, c3.z,
	p3.x, p3.y, p3.z,
	t2.x, t2.y,
	t2.x, t2.y,
	c2.x, c2.y, c2.z,
	p2.x, p2.y, p2.z,
    };
 
    private static final float[] indexedInterleaved = {
	t1.x,t1.y,
	t1.x,t1.y,
	c1.x,c1.y,c1.z,
	p1.x,p1.y,p1.z,
	t2.x,t2.y,
	t2.x,t2.y,
	c2.x,c2.y,c2.z,
	p2.x,p2.y,p2.z,
	t3.x,t3.y,
	t3.x,t3.y,
	c3.x,c3.y,c3.z,
	p3.x,p3.y,p3.z,
	t4.x,t4.y,
	t4.x,t4.y,
	c4.x,c4.y,c4.z,
	p4.x,p4.y,p4.z,
    };
    

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

    TextureUnitState textureUnitState[] = new TextureUnitState[2];
    Texture tex1;
    Texture tex2;

    private java.net.URL texImage1 = null;
    private java.net.URL texImage2 = null;

    private SimpleUniverse u;

    private J3DBuffer interleavedBuffer;
    private J3DBuffer indexedInterleavedBuffer;

    void createInterleavedBuffers() {
	int size;
	ByteOrder order =  ByteOrder.nativeOrder();

	size =  (2 + 2 + 3 + 3 ) * 3 * 4; 
	FloatBuffer vertex = ByteBuffer.allocateDirect(size * 4).order(order).asFloatBuffer();
	vertex.put(interleaved, 0, size);
	interleavedBuffer = new J3DBuffer(vertex);

	size = ( 2 + 2 + 3 + 3) * 4;
	FloatBuffer indexedVertex = ByteBuffer.allocateDirect(size * 4).order(order).asFloatBuffer();
	indexedVertex.put(indexedInterleaved, 0, size);
	indexedInterleavedBuffer = new J3DBuffer(indexedVertex);
    }
    
    BranchGroup createSceneGraph() {
	BranchGroup objRoot = new BranchGroup();

	// Set up attributes to render lines
        app = new Appearance();
	app.setCapability(Appearance.ALLOW_TEXTURE_UNIT_STATE_WRITE);
	
	transp = new TransparencyAttributes();
	transp.setTransparency(0.5f);
	transp.setCapability(TransparencyAttributes.ALLOW_MODE_WRITE);
	transp.setTransparencyMode(TransparencyAttributes.NONE);
	app.setTransparencyAttributes(transp);

        // load textures
        TextureAttributes texAttr1 = new TextureAttributes();
        texAttr1.setTextureMode(TextureAttributes.DECAL);
        TextureAttributes texAttr2 = new TextureAttributes();
        texAttr2.setTextureMode(TextureAttributes.MODULATE);

        TextureLoader tex = new TextureLoader(texImage1, new String("RGB"), this);
        if (tex == null)
            return null;
        tex1 = tex.getTexture();

        tex = new TextureLoader(texImage2, new String("RGB"), this);
        if (tex == null)
            return null;
        tex2 = tex.getTexture();

        textureUnitState[0] = new TextureUnitState(tex1, texAttr1, null);
        textureUnitState[1] = new TextureUnitState(tex2, texAttr2, null);

	createInterleavedBuffers();
	
	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);

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