simpletexture.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.*;

public class SimpleTexture extends Applet {
	
	public BranchGroup createSceneGraph(String filename) {
		// 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);

		// Create the transform group node and initialize it to the
		// identity.  Enable the TRANSFORM_WRITE capability so that
		// our behavior code can modify it at runtime.  Add it to the
		// root of the subgraph.
		TransformGroup objTrans = new TransformGroup();
		objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
		sceneRoot.addChild(objTrans);
		
		TextureLoader myLoader=new TextureLoader (filename,this);
		ImageComponent2D myImage=myLoader.getImage ();
		if ( myImage == null )
		{
			System.err.println( "Cannot load texture '" + filename + "'" );
			return null;
		}
		
		Texture2D myTex=(Texture2D)myLoader.getTexture();
				
				
		// Create appearance object for textured cube
		Appearance app = new Appearance();		
				//允许光照
		app.setTexture(myTex);
		
		TextureAttributes texAttr = new TextureAttributes();
		Transform3D myTrans = new Transform3D( );
		myTrans.rotZ( Math.PI/4.0 ); 
			// 45 degrees
		texAttr.setTextureTransform( myTrans );


		// Create textured cylinder and add it to the scene graph.
		Cylinder cylin=new Cylinder(0.35f,1.0f,Cylinder.GENERATE_TEXTURE_COORDS ,app);
		objTrans.addChild (cylin);

		// 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,
										4000, 0, 0,
										0, 0, 0);

		RotationInterpolator rotator =new RotationInterpolator(rotationAlpha, objTrans, yAxis,
															   0.0f, (float) Math.PI*2.0f);
		
		rotator.setSchedulingBounds(bounds);
		objTrans.addChild(rotator);
*/
/*		DirectionalLight lightD1 = new DirectionalLight();
		Vector3f direction = new Vector3f(-0.0f, -1.0f, -1.0f);
		Color3f cyan=new Color3f (0.0f,1.0f,1.0f);
		//direction.normalize();
		lightD1.setDirection(direction);
		lightD1.setColor (cyan);
		lightD1.setInfluencingBounds(bounds);
		sceneRoot.addChild(lightD1);
*/

		// Have Java 3D perform optimizations on this scene graph.
		sceneRoot.compile();

		return sceneRoot;
	}

	public SimpleTexture(String filename) {
		filename = "coca2.jpg";
	

		setLayout(new BorderLayout());
		GraphicsConfiguration config =SimpleUniverse.getPreferredConfiguration();

		Canvas3D c = new Canvas3D(config);
		add("Center", c);

		// Create a simple scene and attach it to the virtual universe
		BranchGroup scene = createSceneGraph(filename);
		if(scene==null)
		{
			System.err.println( "Cannot create the scene graph" );
			return;
		}
		SimpleUniverse 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);
	}

	//
	// The following allows TextureImage to be run as an application
	// as well as an applet
	//
	public static void main(String[] args) {
		
		new MainFrame(new SimpleTexture(null), 256, 256);
	}

}