// Java 3Dテスト用アプレット
// ColorTest.java
//   Copyright (c) 1999 ENDO Yasuyuki
//                      mailto:yasuyuki@javaopen.org
//                      http://www.javaopen.org/j3dbook/index.html

import java.applet.*;
import java.awt.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.SimpleUniverse;

public class ColorTest extends Applet {
  public ColorTest() {
    GraphicsConfiguration config =
      SimpleUniverse.getPreferredConfiguration();
    Canvas3D canvas = new Canvas3D(config);
    this.setLayout(new BorderLayout());
    this.add(canvas, BorderLayout.CENTER);

    SimpleUniverse universe = new SimpleUniverse(canvas);
    universe.getViewingPlatform().setNominalViewingTransform();

    BranchGroup scene = createSceneGraph();

    universe.addBranchGraph(scene);
  }

  private BranchGroup createSceneGraph() {
    BranchGroup root = new BranchGroup();

    Point3d[] vertices = new Point3d[6];
    
    vertices[0] = new Point3d(-0.9, 0.0, 0.0);
    vertices[1] = new Point3d(-0.6, -0.4, 0.0);
    vertices[2] = new Point3d(-0.2, 0.3, 0.0);
    vertices[3] = new Point3d(0.1, 0.0, 0.0);
    vertices[4] = new Point3d(0.3, -0.4, 0.0);
    vertices[5] = new Point3d(0.6, 0.1, 0.0);
    
    TriangleArray geometry = new TriangleArray(
      vertices.length, GeometryArray.COORDINATES | GeometryArray.COLOR_3);
    geometry.setCoordinates(0, vertices);
    Color3f red = new Color3f(1.0f, 0.0f, 0.0f);
    Color3f blue = new Color3f(0.0f, 0.0f, 1.0f);
    geometry.setColor(0, red);
    geometry.setColor(1, red);
    geometry.setColor(2, red);
    geometry.setColor(3, blue);
    geometry.setColor(4, blue);
    geometry.setColor(5, blue);
    
    Shape3D shape = new Shape3D(geometry);
    
    root.addChild(shape);

    return root;
  }

  public static void main(String[] args) {
    ColorTest applet = new ColorTest();
    MainFrame frame = new MainFrame(applet, 500, 500);
  }
}