图片3D化代码设计java

实现图片的三维化可以使用Java中的Java 3D API。以下是一个简单的代码示例：

import java.applet.Applet;
import java.awt.BorderLayout;
import java.awt.GraphicsConfiguration;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import javax.media.j3d.Appearance;
import javax.media.j3d.Background;
import javax.media.j3d.BoundingSphere;
import javax.media.j3d.BranchGroup;
import javax.media.j3d.Canvas3D;
import javax.media.j3d.ImageComponent2D;
import javax.media.j3d.Material;
import javax.media.j3d.PhysicalBody;
import javax.media.j3d.PhysicalEnvironment;
import javax.media.j3d.PointLight;
import javax.media.j3d.Transform3D;
import javax.media.j3d.TransformGroup;
import javax.vecmath.Color3f;
import javax.vecmath.Point3d;
import javax.vecmath.Vector3f;

import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.geometry.Box;
import com.sun.j3d.utils.universe.SimpleUniverse;

public class Image3D extends Applet {

    private static final long serialVersionUID = 1L;

    public Image3D() {
        setLayout(new BorderLayout());
        GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
        Canvas3D canvas = new Canvas3D(config);
        add("Center", canvas);
        BranchGroup scene = createSceneGraph();
        scene.compile();
        SimpleUniverse simpleU = new SimpleUniverse(canvas);
        simpleU.getViewingPlatform().setNominalViewingTransform();
        simpleU.addBranchGraph(scene);
    }

    private BranchGroup createSceneGraph() {
        BranchGroup objRoot = new BranchGroup();
        TransformGroup objTrans = new TransformGroup();
        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objRoot.addChild(objTrans);

        BufferedImage image = null;
        try {
            image = ImageIO.read(new File("image.jpg"));
        } catch (Exception e) {
            System.out.println(e);
        }

        if (image != null) {
            int x = image.getWidth();
            int y = image.getHeight();
            Box box = new Box(x / 100f, y / 100f, 0.1f, Box.GENERATE_NORMALS | Box.GENERATE_TEXTURE_COORDS, createAppearance(image));
            objTrans.addChild(box);
        }

        Point3d eye = new Point3d(0.0, 0.0, 7.0);
        Point3d center = new Point3d(0.0, 0.0, 0.0);
        Vector3f up = new Vector3f(0.0f, 1.0f, 0.0f);
        Transform3D viewTransform = new Transform3D();
        viewTransform.lookAt(eye, center, up);
        viewTransform.invert();
        TransformGroup viewTrans = simpleU.getViewingPlatform().getViewPlatformTransform();
        viewTrans.setTransform(viewTransform);

        Color3f ambientColor = new Color3f(0.5f, 0.5f, 0.5f);
        AmbientLight ambientLightNode = new AmbientLight(ambientColor);
        ambientLightNode.setInfluencingBounds(new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0));
        objRoot.addChild(ambientLightNode);

        Color3f lightColor = new Color3f(1.0f, 1.0f, 1.0f);
        Vector3f lightDirection = new Vector3f(4.0f, -7.0f, -12.0f);
        DirectionalLight light = new DirectionalLight(lightColor, lightDirection);
        light.setInfluencingBounds(new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0));
        objRoot.addChild(light);

        PointLight ptlight = new PointLight(new Color3f(1.0f, 1.0f, 1.0f), new Point3f(0f, 0f, 2f), new Point3f(1f, 0f, 0f));
        ptlight.setInfluencingBounds(new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0));
        objRoot.addChild(ptlight);

        Background bg = new Background(new Color3f(0.9f, 0.9f, 0.9f));
        bg.setApplicationBounds(new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0));
        objRoot.addChild(bg);

        return objRoot;
    }

    private Appearance createAppearance(BufferedImage image) {
        Appearance app = new Appearance();
        Material mat = new Material();
        mat.setAmbientColor(new Color3f(1.0f, 1.0f, 1.0f));
        mat.setDiffuseColor(new Color3f(1.0f, 1.0f, 1.0f));
        mat.setSpecularColor(new Color3f(1.0f, 1.0f, 1.0f));
        app.setMaterial(mat);
        ImageComponent2D img = new ImageComponent2D(ImageComponent2D.FORMAT_RGB, image);
        Texture2D tex = new Texture2D(Texture.BASE_LEVEL, Texture.RGB, img.getWidth(), img.getHeight());
        tex.setImage(0, img);
        app.setTexture(tex);
        return app;
    }

    public static void main(String[] args) {
        new MainFrame(new Image3D(), 640, 480);
    }

}

这个程序通过读取一个名为`image.jpg`的图像文件，并将其转换为Java 3D中的3D对象。在场景中，我们还添加了一些点光源和方向光源以及环境光源。最后，我们使用Java 3D API中提供的Background类来设置背景色。这个例子只是一个基本的开始，你可以根据自己的需求进行修改和扩展。