/*--------------*/
/* Ja84.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 Ja84 extends Applet{

    private SimpleUniverse simpleU;
    private TransformGroup vpTrans;
    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
        vpTrans = simpleU.getViewingPlatform().getViewPlatformTransform();
        simpleU.addBranchGraph(createSceneGraph());
    }

    private BranchGroup createSceneGraph(){

        //Transform3Dオブジェクト
        Transform3D trans = new Transform3D();

        BranchGroup branchG0 = new BranchGroup();

        //視点の設定（Behaviorの呼出し）
        Ja84Behavior myLookBehavior = new Ja84Behavior(vpTrans);
        myLookBehavior.setSchedulingBounds(bounds);
        branchG0.addChild(myLookBehavior);

        //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);

        //transG0：以下の幾何変換の取りまとめノード
        TransformGroup transG0 = new TransformGroup();
        branchG0.addChild(transG0);

        //[球1]Appearance1を作成
        Appearance ap1 = new Appearance();
        ColoringAttributes ca1 = new ColoringAttributes();
        ca1.setColor(new Color3f( 1.0f, 0.5f, 0.5f));
        ap1.setColoringAttributes(ca1);
        PolygonAttributes pa = new PolygonAttributes();
        pa.setPolygonMode(PolygonAttributes.POLYGON_LINE);  //ワイヤー
        ap1.setPolygonAttributes(pa);
        //球1を作成
        trans.set(new Vector3f(-0.4f, -0.2f, -10.0f));
        TransformGroup transG1 = new TransformGroup(trans);
        transG0.addChild(transG1);
        Sphere sphere1 = new Sphere(0.2f, ap1);
        transG1.addChild(sphere1);

        //[円柱]Appearance2を作成
        Appearance ap2 = new Appearance();
        ColoringAttributes ca2 = new ColoringAttributes();
        ca2.setColor(new Color3f( 0.50f, 1.5f, 0.5f));
        ap2.setColoringAttributes(ca2);
        ap2.setPolygonAttributes(pa);
        //円柱を作成
        trans.setTranslation(new Vector3f(0.3f, 0.5f, -20.0f));
        TransformGroup transG2 = new TransformGroup(trans);
        transG0.addChild(transG2);
        Cylinder cylinder = new Cylinder(0.2f, 0.4f, ap2);
        transG2.addChild(cylinder);

        //[円錐]Appearance3を作成
        Appearance ap3 = new Appearance();
        ColoringAttributes ca3 = new ColoringAttributes();
        ca3.setColor(new Color3f( 0.5f, 0.5f, 1.0f));
        ap3.setColoringAttributes(ca3);
        ap3.setPolygonAttributes(pa);
        //円錐を作成
        trans.setTranslation(new Vector3f(-0.7f, -0.3f, -25.0f));
        TransformGroup transG3 = new TransformGroup(trans);
        transG0.addChild(transG3);
        Cone cone = new Cone(0.4f, 0.6f, ap3);
        transG3.addChild(cone);

        //[球2]Appearance4を作成
        Appearance ap4 = new Appearance();
        ColoringAttributes ca4 = new ColoringAttributes();
        ca4.setColor(new Color3f( 1.0f, 1.0f, 0.5f));
        ap4.setColoringAttributes(ca4);
        ap4.setPolygonAttributes(pa);
        //球2を作成
        trans.setTranslation(new Vector3f(0.0f, 0.2f, -32.0f));
        TransformGroup transG4 = new TransformGroup(trans);
        transG0.addChild(transG4);
        Sphere sphere2 = new Sphere(0.5f, ap4);
        transG4.addChild(sphere2);

        //地面の作成
        trans.setTranslation(new Vector3f(0.0f, -0.7f, 0.0f));
        TransformGroup transG5 = new TransformGroup(trans);
        transG0.addChild(transG5);
        createGround(transG5);

        branchG0.compile();

        return branchG0;
    }

    //地面を作成する
    private void createGround(TransformGroup transG){

        Point3f[] vertex = new Point3f[4];
        Color3f[] color = new Color3f[4];

        for(int i=0;i<=12;i++){
            vertex[0] = new Point3f(-6.0f+(1.0f*i), 0.0f,   0.0f); //Z方向
            vertex[1] = new Point3f(-6.0f+(1.0f*i), 0.0f, -48.0f); //Z方向
            vertex[2] = new Point3f(-6.0f, 0.0f, -4.0f*i);         //X方向
            vertex[3] = new Point3f( 6.0f, 0.0f, -4.0f*i);         //X方向
            color[0] = new Color3f( 0.0f, 0.0f, 0.0f);
            color[1] = new Color3f( 0.0f, 0.0f, 0.0f);
            color[2] = new Color3f( 0.0f, 0.0f, 0.0f);
            color[3] = new Color3f( 0.0f, 0.0f, 0.0f);

            //2点組の線を引く
            LineArray lineA = new LineArray(vertex.length, 
                GeometryArray.COORDINATES | GeometryArray.COLOR_3);
            lineA.setCoordinates(0, vertex);
            lineA.setColors(0, color);
            Shape3D line3D = new Shape3D(lineA);
            transG.addChild(line3D);
        }
    }

    public void destroy(){

        simpleU.cleanup();
    }

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

        MainFrame frame = new MainFrame(new Ja84(), 512, 512);
    }
}