linestriparray.java

里面 有一些java3d编程的例子

import java.applet.Applet;
import java.awt.BorderLayout;
import com.sun.j3d.utils.behaviors.mouse.*;
import com.sun.j3d.utils.geometry.Primitive;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
//import javax.media.j3d.LineStripArray;
import javax.vecmath.*;
public class LineStripArray extends Applet
{
	public BranchGroup createBranchGroupSceneGraph()
	{
		BranchGroup branchGroupRoot=new BranchGroup();
		BoundingSphere bounds=new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);
		Color3f bgColor=new Color3f(1.0f,1.0f,1.0f);
		Background bg=new Background(bgColor);
		bg.setApplicationBounds(bounds);
		branchGroupRoot.addChild(bg);
		Color3f directionalColor=new Color3f(1.0f,0.0f,0.0f);
		Vector3f vec=new Vector3f(0.0f,0.0f,-1.0f);
		DirectionalLight directionalLight=new DirectionalLight(directionalColor,vec);
		directionalLight.setInfluencingBounds(bounds);
		branchGroupRoot.addChild(directionalLight);
		Appearance app=new Appearance();
		Material material=new Material();
		material.setDiffuseColor(new Color3f(1.0f,1.0f,0.0f));
		app.setMaterial(material);
		TransformGroup transformGroup=new TransformGroup();
		transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
		transformGroup.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
		branchGroupRoot.addChild(transformGroup);
		MouseRotate mouseRotate=new MouseRotate();
		mouseRotate.setTransformGroup(transformGroup);
		branchGroupRoot.addChild(mouseRotate);
		mouseRotate.setSchedulingBounds(bounds);
		MouseZoom mouseZoom=new MouseZoom();
		mouseZoom.setTransformGroup(transformGroup);
		branchGroupRoot.addChild(mouseZoom);
		mouseZoom.setSchedulingBounds(bounds);
		MouseTranslate mouseTranslate=new MouseTranslate();
		mouseTranslate.setTransformGroup(transformGroup);
		branchGroupRoot.addChild(mouseTranslate);
		mouseTranslate.setSchedulingBounds(bounds);
		transformGroup.addChild(this.shapeLines());
		branchGroupRoot.compile();
		return branchGroupRoot;
	}
	public Shape3D shapeLines()
	{
		Shape3D shapeLines0=new Shape3D();
		float vertexes[]={
			-0.8f,0.8f,0.0f,0.8f,0.8f,0.0f,
			-0.8f,0.2f,0.0f,0.8f,0.2f,0.0f,
			-0.8f,-0.2f,0.0f,0.8f,-0.2f,0.0f,
			-0.8f,-0.8f,0.0f,0.8f,-0.8f,0.0f
		};
		float colors[]={
			1.0f,0.0f,0.0f,0.0f,1.0f,0.0f,
			0.0f,0.0f,1.0f,1.0f,1.0f,0.0f,
			0.0f,1.0f,1.0f,1.0f,0.0f,1.0f,
			0.0f,0.0f,0.0f,0.3f,0.0f,0.0f
		};
		int[] substrips=new int[2];
		substrips[0]=4;
		substrips[1]=4;
		javax.media.j3d.LineStripArray lines=new javax.media.j3d.LineStripArray(8,LineArray.COORDINATES|LineArray.COLOR_3,substrips);
		lines.setCoordinates(0,vertexes);
		lines.setColor(0,colors);
		LineAttributes lineAttributes=new LineAttributes();
		lineAttributes.setLineWidth(9.0f);
		lineAttributes.setLineAntialiasingEnable(true);
		lineAttributes.setLinePattern(0);
		Appearance app=new Appearance();
		app.setLineAttributes(lineAttributes);
		shapeLines0.setGeometry(lines);
		shapeLines0.setAppearance(app);
		return shapeLines0;
	}
	public LineStripArray()
	{
		this.setLayout(new BorderLayout());
		Canvas3D c=new Canvas3D(SimpleUniverse.getPreferredConfiguration());
		this.add(c,"Center");
		SimpleUniverse u=new SimpleUniverse(c);
		u.getViewingPlatform().setNominalViewingTransform();
		u.addBranchGraph(this.createBranchGroupSceneGraph());
	}
	public static void main(String[] args)
	{
		new MainFrame(new LineStripArray(),300,300);
	}
}