/*--------------*/
/* Ap31.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 Ap31 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);

        //原点のAppearanceを設定
        Appearance ap = new Appearance();
        ColoringAttributes ca = new ColoringAttributes();
        ca.setColor(new Color3f( 0.5f, 0.0f, 1.0f));
        ap.setColoringAttributes(ca);

        // z-bufferのOFF -------------------------------------------
        RenderingAttributes ra = new RenderingAttributes();
        ra.setDepthBufferEnable(false);
        ap.setRenderingAttributes(ra);
        //----------------------------------------------------------

        //--- 円錐 -------------------------------------------------
        //回転
        Transform3D rot = new Transform3D();
        rot.rotZ(Math.PI/2);
        TransformGroup transG1 = new TransformGroup(rot);
        branchG0.addChild(transG1);
        //円錐を作成
        Cone cone = new Cone(0.4f, 1.5f, ap);
        transG1.addChild(cone);
        //----------------------------------------------------------

        //--- 四角形ポリゴン ---------------------------------------
        //平行移動の後、回転
        Transform3D trans = new Transform3D();
        trans.set(new Vector3f( 0.3f, 0.0f, 0.0f));
        rot.rotY(-Math.PI/3);
        trans.mul(rot);
        TransformGroup transG2 = new TransformGroup(trans);
        branchG0.addChild(transG2);
        //四角形ポリゴンの頂点座標・色設定
        Point3f[] vertex = new Point3f[4];
        Color3f[] color = new Color3f[4];
        vertex[0] = new Point3f( 0.5f,  0.5f, 0.0f);
        vertex[1] = new Point3f(-0.5f,  0.5f, 0.0f);
        vertex[2] = new Point3f(-0.5f, -0.5f, 0.0f);
        vertex[3] = new Point3f( 0.5f, -0.5f, 0.0f);
        color[0] = new Color3f( 1.0f,  0.0f, 0.0f);
        color[1] = new Color3f( 0.0f,  1.0f, 0.0f);
        color[2] = new Color3f( 0.0f,  0.0f, 1.0f);
        color[3] = new Color3f( 1.0f,  1.0f, 0.0f);
        //四角形の生成
        QuadArray quadA
            = new QuadArray(vertex.length,
                GeometryArray.COORDINATES | GeometryArray.COLOR_3);
        quadA.setCoordinates(0, vertex);
        quadA.setColors(0, color);
        Shape3D quad3D = new Shape3D(quadA);
        transG2.addChild(quad3D);
        //----------------------------------------------------------

        branchG0.compile();

        return branchG0;
    }

    public void destroy(){

        simpleU.cleanup();
    }

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

        MainFrame frame = new MainFrame(new Ap31(), 512, 512);
    }
}