simpletexattr.java

java 3d 系列源码

import java.applet.Applet;
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 com.sun.j3d.utils.geometry.Box;
import com.sun.j3d.utils.geometry.Cylinder;
import javax.media.j3d.*;
import javax.vecmath.*;
import java.awt.GraphicsConfiguration;

public class SimpleTexAttr extends Applet {
	
	
	private java.net.URL imageURL = null;    
	private SimpleUniverse u = null;  
	private Texture myTex;

public BranchGroup createSceneGraph() {
		// Create the root of the branch graph
		BranchGroup sceneRoot = new BranchGroup();
		BoundingSphere bounds =new BoundingSphere(new Point3d(0.0,0.0,0.0), 100.0);
		
		Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
		Color3f yellow   = new Color3f(1.0f, 1.0f, 0.0f);
		Color3f cyan  = new Color3f(0.0f, 1.0f, 1.0f);

		TransformGroup objTrans = new TransformGroup();
		objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
		Transform3D yAxis = new Transform3D();
		yAxis.rotY(Math.PI/4.0);
		objTrans.setTransform(yAxis);
		sceneRoot.addChild(objTrans);
		
//		TextureLoader myLoader=new TextureLoader (filename,this);
		Appearance app = new Appearance();
				
		TextureLoader myLoader=new TextureLoader (imageURL,this);
		if(myLoader==null)
			return null;
//		ImageComponent2D myImage=myLoader.getImage ();
//		myTex=(Texture2D)myLoader.getTexture();
		myTex=myLoader.getTexture();

		// Create appearance object for textured cube

		app.setTexture(myTex);
			
/*		TextureAttributes texAttr = new TextureAttributes();
		Transform3D myTrans = new Transform3D( );
		myTrans.rotZ( Math.PI/4.0 ); // 45 degrees
		texAttr.setTextureTransform( myTrans );
		app.setTextureAttributes(texAttr);
*/
/*		TextureAttributes texAttr = new TextureAttributes();
		Transform3D myTrans = new Transform3D( );
		myTrans.setScale(new Vector3d(2.0,4.0,0.0));
		texAttr.setTextureTransform( myTrans );
		app.setTextureAttributes(texAttr);
*/
/*		TextureAttributes texAttr = new TextureAttributes();
		Transform3D myTrans = new Transform3D( );
		myTrans.setTranslation(new Vector3f(0.5f,0.5f,0.0f));
		texAttr.setTextureTransform( myTrans );
		app.setTextureAttributes(texAttr);
*/
/*		TransparencyAttributes myTA = new TransparencyAttributes( );
		myTA.setTransparency( 0.5f );
		myTA.setTransparencyMode( TransparencyAttributes.BLENDED );
		app.setTransparencyAttributes (myTA);
		
		Material mat = new Material();
        mat.setDiffuseColor(cyan);
        mat.setSpecularColor(white);
        mat.setShininess(128);
		app.setMaterial (mat);

		TextureAttributes texAttr = new TextureAttributes();
		texAttr.setTextureMode(TextureAttributes.REPLACE );
		texAttr.setTextureBlendColor (new Color4f(0.0f,1.0f,1.0f,0.5f));
		app.setTextureAttributes(texAttr);
		
		AmbientLight lightA = new AmbientLight();
		lightA.setInfluencingBounds(bounds);
		sceneRoot.addChild(lightA);

		DirectionalLight lightD1 = new DirectionalLight();
		lightD1.setInfluencingBounds(bounds);
		Vector3f direction = new Vector3f(-0.2f, -1.0f, -1.0f);
		lightD1.setDirection(direction);
		lightD1.setColor(yellow);
		sceneRoot.addChild(lightD1);
*/	
/*		myTex.setBoundaryModeS(Texture2D.CLAMP );
		myTex.setBoundaryModeT(Texture2D.CLAMP );
		myTex.setBoundaryColor (new Color4f(0.0f,1.0f,1.0f,0.0f));
		TextureAttributes texAttr = new TextureAttributes();
		Transform3D myTrans = new Transform3D( );
		myTrans.setScale(2.0f);
		texAttr.setTextureTransform( myTrans );
		app.setTextureAttributes(texAttr);
*/
		
/*		myTex.setMagFilter( Texture.BASE_LEVEL_POINT );
//		myTex.setMinFilter( Texture.BASE_LEVEL_POINT );
		
		TextureAttributes texAttr = new TextureAttributes();
		Transform3D myTrans = new Transform3D( );
		myTrans.setScale(0.5f);
		texAttr.setTextureTransform( myTrans );
		app.setTextureAttributes(texAttr);
*/
		// Create textured cube and add it to the scene graph.
		Box myBox = new Box(0.4f, 0.4f, 0.4f,
								  Box.GENERATE_TEXTURE_COORDS
								  |Box.GENERATE_NORMALS , app);
		objTrans.addChild(myBox);
		
	// Have Java 3D perform optimizations on this scene graph.
		sceneRoot.compile();
		return sceneRoot;
	}

	public SimpleTexAttr(java.net.URL filename) {
	    imageURL = filename;		
//		filename = "brick.jpg";
/*		setLayout(new BorderLayout());
		GraphicsConfiguration config =SimpleUniverse.getPreferredConfiguration();
		Canvas3D c = new Canvas3D(config);
		add("Center", c);
		BranchGroup scene = createSceneGraph();
		SimpleUniverse u = new SimpleUniverse(c);
		u.getViewingPlatform().setNominalViewingTransform();
		u.addBranchGraph(scene);
*/	}
	
	public void init() 
	{
    	if (imageURL == null) 
    	{
      		// the path to the image for an applet
    		try 
      		{
				imageURL = new java.net.URL(getCodeBase().toString() + 
				      "../misc/brick.jpg");
      		}
      		catch (java.net.MalformedURLException ex) {
				System.out.println(ex.getMessage());
				System.exit(1);
      		}
    	}
    	
  	    setLayout(new BorderLayout());
	    GraphicsConfiguration config =
    	SimpleUniverse.getPreferredConfiguration();

    	GraphicsConfiguration confi= 
               SimpleUniverse.getPreferredConfiguration();
    	Canvas3D c=new Canvas3D(confi);
    	add("Center", c);
    
    	// create the gui

    	BranchGroup scene = createSceneGraph();
    	u = new SimpleUniverse(c);

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

    	u.addBranchGraph(scene);

    }

	public static void main(String[] args) 
	{
 		java.net.URL filename=null;
    	try
    	{
			filename=new java.net.URL("file:../misc/brick.jpg");
		}
		catch(java.net.MalformedURLException e)
		{
			System.out.println(e.getMessage());
			System.exit(1);
		}
		new MainFrame(new SimpleTexAttr(filename), 256, 256);
	}

}