📄 myball.java
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package com.java3d.examples;
import com.sun.j3d.utils.geometry.*;
import com.sun.j3d.utils.universe.*;
import javax.media.j3d.*;
import javax.vecmath.*;
public class myBall {
public myBall() {
// 创建宇宙
SimpleUniverse universe = new SimpleUniverse();
// 创建容纳物体的结构
BranchGroup group = new BranchGroup();
// 创建一个球体并加入到物体组
Sphere sphere = new Sphere(0.5f,1,100);
group.addChild(sphere);
// 创建一个从原点延伸100米的红色光源
Color3f light1Color = new Color3f(1.8f, 0.1f, 0.1f);
BoundingSphere bounds =
new BoundingSphere(new Point3d(0.0,0.0,0.0), 100);
BoundingSphere bounds2 =
new BoundingSphere(new Point3d(0.0,0.0,0.0), 1000);
Vector3f light1Direction = new Vector3f(5.0f, 5.0f, -12.0f);
//定义一组平行光,颜色和方向
DirectionalLight light1 = new DirectionalLight(light1Color, light1Direction);
light1.setInfluencingBounds(bounds);
//加入一环境光
AmbientLight ambientLight = new AmbientLight(new Color3f(1.0f, 1.0f, 1.0f));
ambientLight.setInfluencingBounds(bounds2);
//group.addChild(ambientLight);
group.addChild(light1);
// 注视球体
universe.getViewingPlatform().setNominalViewingTransform();
// 添加物体组到宇宙中
universe.addBranchGraph(group);
}
public static void main(String[] args) { new myBall(); }
}
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