/*--------------*/
/* Ex51.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 Ex51 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);

        //Interpolator用のノード
        TransformGroup transG0 = new TransformGroup();
        branchG0.addChild(transG0);

        //ColorCubeの生成
        ColorCube colorCube = new ColorCube(0.2f);
        transG0.addChild(colorCube);

        //平行移動のアニメーション設定
        transG0.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);

        Transform3D transAxis = new Transform3D();      //X軸方向
        transAxis.rotZ(Math.PI/2);                      //90度回転 <=====add
        Alpha positionAlpha = new Alpha(-1,             //無限に繰返し
                            Alpha.DECREASING_ENABLE,    //減少有効
                            2000, 0,                    //起動時間,変化開始までの時間
                            3000, 0, 0,                 //増加時間,加速時間,停止時間
                            4000, 2000, 0);             //減少時間,加速時間,停止時間
        PositionInterpolator translator =               //X軸方向の平行移動
            new PositionInterpolator(positionAlpha,     //Alphaオブジェクト
                                     transG0, transAxis,//対象ノード、移動軸
                                     -0.7f, 0.7f);      //開始位置,終了位置
        translator.setSchedulingBounds(bounds);
        transG0.addChild(translator);

        branchG0.compile();

        return branchG0;
    }

    public void destroy(){

        simpleU.cleanup();
    }

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

        MainFrame frame = new MainFrame(new Ex51(), 512, 512);
    }
}