java3d爱心代码加字

以下是Java 3D爱心代码加字的示例：

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
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.Font3D;
import javax.media.j3d.FontExtrusion;
import javax.media.j3d.GeometryArray;
import javax.media.j3d.ImageComponent2D;
import javax.media.j3d.Material;
import javax.media.j3d.PointArray;
import javax.media.j3d.PolygonAttributes;
import javax.media.j3d.Shape3D;
import javax.media.j3d.Texture;
import javax.media.j3d.Texture2D;
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.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.behaviors.mouse.MouseTranslate;
import com.sun.j3d.utils.behaviors.mouse.MouseZoom;
import com.sun.j3d.utils.geometry.GeometryInfo;
import com.sun.j3d.utils.geometry.NormalGenerator;
import com.sun.j3d.utils.image.TextureLoader;
import com.sun.j3d.utils.universe.SimpleUniverse;

public class Java3DHeart {
    public static void main(String[] args) {
        // 创建一个简单的宇宙
        SimpleUniverse universe = new SimpleUniverse();
        // 创建一个画布
        Canvas3D canvas = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
        // 将画布添加到宇宙中
        universe.getViewingPlatform().setNominalViewingTransform();
        universe.addBranchGraph(createSceneGraph(canvas));
        // 将画布添加到窗口中
        javax.swing.JFrame frame = new javax.swing.JFrame("Java 3D Heart");
        frame.setDefaultCloseOperation(javax.swing.JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(canvas, java.awt.BorderLayout.CENTER);
        frame.setSize(500, 500);
        frame.setVisible(true);
    }

    public static BranchGroup createSceneGraph(Canvas3D canvas) {
        // 创建一个分支组
        BranchGroup objRoot = new BranchGroup();
        // 创建一个变换组
        TransformGroup objTrans = new TransformGroup();
        objTrans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
        objRoot.addChild(objTrans);
        // 创建一个3D文字
        Font3D font3D = new Font3D(new Font("Arial", Font.PLAIN, 1), new FontExtrusion());
        GeometryInfo gi = new GeometryInfo(GeometryInfo.POLYGON_ARRAY);
        gi.setFont3D(font3D);
        gi.addString("I Love You", new Point3d(-2.5, -1.5, 0));
        NormalGenerator ng = new NormalGenerator();
        ng.generateNormals(gi);
        GeometryArray ga = gi.getGeometryArray();
        Appearance app = new Appearance();
        Material mat = new Material();
        mat.setDiffuseColor(new Color3f(Color.RED));
        mat.setSpecularColor(new Color3f(Color.WHITE));
        app.setMaterial(mat);
        Shape3D shape = new Shape3D(ga, app);
        objTrans.addChild(shape);
        // 创建一个爱心
        Point3d[] heartPoints = new Point3d[100];
        for (int i = 0; i < 100; i++) {
            double theta = i * 2 * Math.PI / 100;
            double x = 16 * Math.pow(Math.sin(theta), 3);
            double y = 13 * Math.cos(theta) - 5 * Math.cos(2 * theta) - 2 * Math.cos(3 * theta) - Math.cos(4 * theta);
            heartPoints[i] = new Point3d(x / 20, y / 20, 0);
        }
        PointArray heart = new PointArray(heartPoints.length, PointArray.COORDINATES);
        heart.setCoordinates(0, heartPoints);
        Appearance heartAppearance = new Appearance();
        TextureLoader loader = new TextureLoader("heart.jpg", canvas);
        Texture texture = loader.getTexture();
        heartAppearance.setTexture(texture);
        PolygonAttributes polyAttr = new PolygonAttributes();
        polyAttr.setCullFace(PolygonAttributes.CULL_NONE);
        heartAppearance.setPolygonAttributes(polyAttr);
        Shape3D heartShape = new Shape3D(heart, heartAppearance);
        objTrans.addChild(heartShape);
        // 创建一个背景
        Background background = new Background();
        background.setColor(1.0f, 1.0f, 1.0f);
        background.setApplicationBounds(new BoundingSphere(new Point3d(0.0, 0.0, 0.0), 100.0));
        objRoot.addChild(background);
        // 创建一个鼠标旋转行为
        MouseRotate behavior1 = new MouseRotate();
        behavior1.setTransformGroup(objTrans);
        objTrans.addChild(behavior1);
        behavior1.setSchedulingBounds(new BoundingSphere());
        // 创建一个鼠标平移行为
        MouseTranslate behavior2 = new MouseTranslate();
        behavior2.setTransformGroup(objTrans);
        objTrans.addChild(behavior2);
        behavior2.setSchedulingBounds(new BoundingSphere());
        // 创建一个鼠标缩放行为
        MouseZoom behavior3 = new MouseZoom();
        behavior3.setTransformGroup(objTrans);
        objTrans.addChild(behavior3);
        behavior3.setSchedulingBounds(new BoundingSphere());
        // 创建一个旋转变换
        Transform3D yAxis = new Transform3D();
        Alpha rotationAlpha = new Alpha(-1, 4000);
        RotationInterpolator rotator = new RotationInterpolator(rotationAlpha, objTrans, yAxis, 0.0f, (float) Math.PI * 2.0f);
        BoundingSphere bounds = new BoundingSphere();
        rotator.setSchedulingBounds(bounds);
        objTrans.addChild(rotator);
        return objRoot;
    }
}

注意：上述代码中的“heart.jpg”是爱心的纹理图片，需要将其放在与Java文件相同的目录下。