计算机图形学 实验一：生成彩色立方体(含源代码).doc

实验一实验目的：生成彩色立方体实验代码：/ColorCube1.javaimport java.applet.Applet;/可以插入htmlimport java.awt.BorderLayout;/窗口采用BorderLayout方式布局import com.sun.j3d.utils.applet.MainFrame;/applicationimport com.sun.j3d.utils.geometry.ColorCube;/调用生成ColorCube的Utilityimport com.sun.j3d.utils.geometry.Primitive;import com.sun.j3d.utils.universe.*;/观测位置的设置import javax.media.j3d.*;/核心类import javax.vecmath.*;/矢量计算import com.sun.j3d.utils.behaviors.mouse.*;public class ColorCube1 extends Applet public BranchGroup createSceneGraph() BranchGroup objRoot=new BranchGroup(); /BranchGroup的一个对象objRoot（放置背景、灯光） BoundingSphere bounds=new BoundingSphere(new Point3d(0.0,0.0,0.0),100.0);/有效范围 TransformGroup objTrans=new TransformGroup(); objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); objRoot.addChild(objTrans); MouseRotate behavior = new MouseRotate(); behavior.setTransformGroup(objTrans); objRoot.addChild(behavior); behavior.setSchedulingBounds(bounds); MouseZoom behavior2 = new MouseZoom(); behavior2.setTransformGroup(objTrans); objRoot.addChild(behavior2); behavior2.setSchedulingBounds(bounds); MouseTranslate behavior3 = new MouseTranslate(); behavior3.setTransformGroup(objTrans); objRoot.addChild(behavior3); behavior3.setSchedulingBounds(bounds); Color3f bgColor=new Color3f(0.0f,0.0f,0.0f); /背景颜色 Background bg=new Background(bgColor); bg.setApplicationBounds(bounds); objRoot.addChild(bg); Color3f directionalColor=new Color3f(1.f,1.f,1.f); Vector3f vec=new Vector3f(1.f,1.f,-1.0f); DirectionalLight directionalLight=new DirectionalLight(directionalColor,vec); directionalLight.setInfluencingBounds(bounds); objRoot.addChild(directionalLight); Appearance app=new Appearance(); /外观材质 Material material=new Material(); /圆锥颜色 /material.setEmissiveColor(new Color3f(1.0f,1.0f,0.0f); material.setDiffuseColor(new Color3f(1.0f,1.0f,0.0f); /辐射光效果 app.setMaterial(material); ColorCube cone=new ColorCube(0.2); objTrans.addChild(cone); /objRpile(); return objRoot; public ColorCube1() setLayout(new BorderLayout(); Canvas3D c=new Canvas3D(null); add(Center,c); BranchGroup scene=createSceneGraph(); SimpleUniverse u=new SimpleUniverse(c); u.getViewingPlatform().setNominalViewingTran