/*--------------*/
/* Ja22.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 javax.vecmath.*;                     //Point3f,Color3f

public class Ja22 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);

        //線の頂点座標・色設定
        int[] stripVertexCount = {3,2};    //連続する頂点の数を配列で設定
        Point3f[] vertex1 = new Point3f[5];
        Color3f[] color1 = new Color3f[5];
        vertex1[0] = new Point3f(-0.5f,  0.7f, 0.0f);
        vertex1[1] = new Point3f( 0.5f,  0.7f, 0.0f);
        vertex1[2] = new Point3f(-0.5f,  0.3f, 0.0f);
        vertex1[3] = new Point3f( 0.5f,  0.3f, 0.0f);
        vertex1[4] = new Point3f(-0.5f,  0.1f, 0.0f);
        color1[0] = new Color3f( 0.0f,  1.0f, 0.0f);    //緑
        color1[1] = new Color3f( 0.0f,  1.0f, 0.0f);    //緑
        color1[2] = new Color3f( 0.0f,  1.0f, 0.0f);    //緑
        color1[3] = new Color3f( 0.0f,  1.0f, 0.0f);    //緑
        color1[4] = new Color3f( 0.0f,  1.0f, 0.0f);    //緑

        //三角形の頂点座標・色設定
        Point3f[] vertex2 = new Point3f[3];
        Color3f[] color2 = new Color3f[3];
        vertex2[0] = new Point3f( 0.3f, -0.7f, 0.0f);
        vertex2[1] = new Point3f( 0.0f, -0.2f, 0.0f);
        vertex2[2] = new Point3f(-0.3f, -0.7f, 0.0f);
        color2[0] = new Color3f( 0.0f,  0.0f, 1.0f);    //青
        color2[1] = new Color3f( 0.0f,  0.0f, 1.0f);    //青
        color2[2] = new Color3f( 0.0f,  0.0f, 1.0f);    //青

        //連続線の生成
        LineStripArray lineStripA
            = new LineStripArray(vertex1.length,
                GeometryArray.COORDINATES | GeometryArray.COLOR_3,
                stripVertexCount);
        lineStripA.setCoordinates(0, vertex1);
        lineStripA.setColors(0, color1);
        Shape3D lineStrip3D = new Shape3D(lineStripA);
        branchG0.addChild(lineStrip3D);

        //三角形の生成
        TriangleArray triangleA
            = new TriangleArray(vertex2.length,
                GeometryArray.COORDINATES | GeometryArray.COLOR_3);
        triangleA.setCoordinates(0, vertex2);
        triangleA.setColors(0, color2);
        Shape3D triangle3D = new Shape3D(triangleA);
        branchG0.addChild(triangle3D);

        branchG0.compile();

        return branchG0;
    }

    public void destroy(){

        simpleU.cleanup();
    }

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

        MainFrame frame = new MainFrame(new Ja22(), 512, 512);
    }
}