// Java 3D Test Applet
// KeyNavigatorTest.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;
import com.sun.j3d.utils.universe.PlatformGeometry;
import com.sun.j3d.utils.behaviors.keyboard.*;

public class KeyNavigatorTest extends Applet {
  private SimpleUniverse universe = null;

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

    universe = new SimpleUniverse(canvas);
    universe.getViewingPlatform().setNominalViewingTransform();
    universe.getViewer().getView().setBackClipDistance(100.0);
    BranchGroup scene = createSceneGraph();
  
    universe.addBranchGraph(scene);
  }

  private BranchGroup createSceneGraph() {
    BranchGroup root = new BranchGroup();
    
    BoundingSphere bounds = new BoundingSphere( new Point3d(), 100.0 );

    TransformGroup viewtrans =
      universe.getViewingPlatform().getViewPlatformTransform();
    KeyNavigatorBehavior keybehavior = new KeyNavigatorBehavior(viewtrans);
    keybehavior.setSchedulingBounds(bounds);
    PlatformGeometry vp = new PlatformGeometry();
    vp.addChild(keybehavior);
    universe.getViewingPlatform().setPlatformGeometry(vp);

    root.addChild(createFloor());
    
    return root;
  }

  // チェッカー模様の床を作る
  private BranchGroup createFloor() {
    BranchGroup bg = new BranchGroup();

    int roop = 100;

    Point3f[] vertices = new Point3f[roop * roop];

    float start = -100.0f;

    float x = start;
    float z = start;

    float step = 2.0f;

    int[] indices = new int[(roop - 1)*(roop - 1) * 4];
    int n = 0;

    Color3f white = new Color3f(1.0f, 1.0f, 1.0f);
    Color3f black = new Color3f(0.0f, 0.0f, 0.0f);
    Color3f[] colors = { white, black };

    int[] colorindices = new int[indices.length];

    for (int i=0; i<roop; i++) {
      for (int j=0; j<roop; j++) {
	vertices[i*roop + j] = new Point3f(x, -2.0f, z); 
	z += step;
	if (i<(roop - 1) && j<(roop - 1)) {
	  int cindex = (i % 2 + j) % 2;
	  colorindices[n] = cindex; indices[n++] = i       * roop + j;
	  colorindices[n] = cindex; indices[n++] = i       * roop + (j + 1);
	  colorindices[n] = cindex; indices[n++] = (i + 1) * roop + (j + 1);
	  colorindices[n] = cindex; indices[n++] = (i + 1) * roop + j;
	}
      }
      z = start;
      x += step;
    }

    IndexedQuadArray geom = new IndexedQuadArray( vertices.length,
						  GeometryArray.COORDINATES |
						  GeometryArray.COLOR_3,
						  indices.length );
    geom.setCoordinates(0, vertices);
    geom.setCoordinateIndices(0, indices);
    geom.setColors(0, colors);
    geom.setColorIndices(0, colorindices);

    Shape3D floor = new Shape3D(geom);
    bg.addChild(floor);

    bg.compile();

    return bg;
  }

  public static void main(String[] args) {
    KeyNavigatorTest applet = new KeyNavigatorTest();
    Frame frame = new MainFrame(applet, 200, 200);
  }
}