/*------------*/
/* Ex32.java  */
/*------------*/
import java.applet.Applet;
import java.awt.*;                          //BorderLayout,GraphicsConfiguration,event
import javax.media.j3d.*;                   //Java3d
import com.sun.j3d.utils.applet.MainFrame;  //MainFrame
import com.sun.j3d.utils.universe.*;        //SimpleUniverse
import com.sun.j3d.utils.geometry.*;        //Primitive
import javax.vecmath.*;                     //Point3f,Color3f

public class Ex32 extends Applet{

    private SimpleUniverse simpleU;
    private BoundingSphere bounds = new BoundingSphere(new Point3d(), 10.0);

    public void init(){

        //アプレットの中央にCanvas3Dを追加
        setLayout(new BorderLayout());
        Canvas3D canvas = new Canvas3D(SimpleUniverse.getPreferredConfiguration());
        add(canvas, BorderLayout.CENTER);

        //シーングラフの生成
        simpleU = new SimpleUniverse(canvas);
        simpleU.getViewingPlatform().setNominalViewingTransform();

        //シーングラフの作成
        simpleU.addBranchGraph(createSceneGraph());
    }

    private BranchGroup createSceneGraph(){

        BranchGroup branchG0 = new BranchGroup();

        //背景色の設定（設定が無い場合は黒）
        Background background = new Background(new Color3f(0.3f, 0.3f, 0.3f));
        background.setApplicationBounds(bounds);
        branchG0.addChild(background);

        /* 全体をx方向に平行移動、y軸回りに回転後、縮小する */
/*--mulメソッドによる合成変換------------------------------
        Transform3D trans = new Transform3D();
        Transform3D rot = new Transform3D();
        Transform3D scale = new Transform3D();
        trans.setTranslation(new Vector3f(0.2f, -0.5f, 0.0f));
        rot.rotX(Math.PI/4);
        scale.setScale(new Vector3d(2.0d, 0.5d, 1.0d));
        trans.mul(rot);
        trans.mul(scale);

        TransformGroup transG1 = new TransformGroup(trans);
        branchG0.addChild(transG1);

        //原点に物体を作成
        ColorCube colorCube = new ColorCube(0.3f);
        transG1.addChild(colorCube);
-----------------------------------------------------------*/
/*--複数のTransformGroupによる変換-------------------------*/
        Transform3D trans = new Transform3D();
        Transform3D rot = new Transform3D();
        Transform3D scale = new Transform3D();
        trans.setTranslation(new Vector3f(0.2f, -0.5f, 0.0f));
        rot.rotX(Math.PI/4);
        scale.setScale(new Vector3d(2.0d, 0.5d, 1.0d));

        TransformGroup transG1 = new TransformGroup(trans);
        TransformGroup transG2 = new TransformGroup(rot);
        TransformGroup transG3 = new TransformGroup(scale);
        branchG0.addChild(transG1);
        transG1.addChild(transG2);
        transG2.addChild(transG3);

        //原点に物体を作成
        ColorCube colorCube = new ColorCube(0.3f);
        transG3.addChild(colorCube);
/*---------------------------------------------------------*/

        branchG0.compile();

        return branchG0;
    }

    public void destroy(){

        simpleU.cleanup();
    }

    public static void main(String[] args){    //Application

        MainFrame frame = new MainFrame(new Ex32(), 512, 512);
    }
}