/*
 * gleem -- OpenGL Extremely Easy-To-Use Manipulators.
 * Copyright (C) 1998-2003 Kenneth B. Russell (kbrussel@alum.mit.edu)
 *
 * Copying, distribution and use of this software in source and binary
 * forms, with or without modification, is permitted provided that the
 * following conditions are met:
 *
 * Distributions of source code must reproduce the copyright notice,
 * this list of conditions and the following disclaimer in the source
 * code header files; and Distributions of binary code must reproduce
 * the copyright notice, this list of conditions and the following
 * disclaimer in the documentation, Read me file, license file and/or
 * other materials provided with the software distribution.
 *
 * The names of Sun Microsystems, Inc. ("Sun") and/or the copyright
 * holder may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS," WITHOUT A WARRANTY OF ANY
 * KIND. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, NON-INTERFERENCE, ACCURACY OF
 * INFORMATIONAL CONTENT OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. THE
 * COPYRIGHT HOLDER, SUN AND SUN'S LICENSORS SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL THE
 * COPYRIGHT HOLDER, SUN OR SUN'S LICENSORS BE LIABLE FOR ANY LOST
 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
 * INABILITY TO USE THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGES. YOU ACKNOWLEDGE THAT THIS SOFTWARE IS NOT
 * DESIGNED, LICENSED OR INTENDED FOR USE IN THE DESIGN, CONSTRUCTION,
 * OPERATION OR MAINTENANCE OF ANY NUCLEAR FACILITY. THE COPYRIGHT
 * HOLDER, SUN AND SUN'S LICENSORS DISCLAIM ANY EXPRESS OR IMPLIED
 * WARRANTY OF FITNESS FOR SUCH USES.
 */

package gleem;

import java.awt.*;
import java.awt.event.*;
import javax.media.opengl.*;
import com.sun.opengl.utils.*;
import gleem.linalg.*;

/** Tests the Examiner Viewer. */

public class TestExaminerViewer {
  private static final int X_SIZE = 400;
  private static final int Y_SIZE = 400;

  static class HandleBoxManipBSphereProvider implements BSphereProvider {
    private HandleBoxManip manip;

    private HandleBoxManipBSphereProvider(HandleBoxManip manip) {
      this.manip = manip;
    }

    public BSphere getBoundingSphere() {
      BSphere bsph = new BSphere();
      bsph.setCenter(manip.getTranslation());
      Vec3f scale0 = manip.getScale();
      Vec3f scale1 = manip.getGeometryScale();
      Vec3f scale = new Vec3f();
      scale.setX(2.0f * scale0.x() * scale1.x());
      scale.setY(2.0f * scale0.y() * scale1.y());
      scale.setZ(2.0f * scale0.z() * scale1.z());
      bsph.setRadius(scale.length());
      return bsph;
    }
  }

  static class Listener implements GLEventListener {
    private GL gl;
    private GLU glu;
    private CameraParameters params = new CameraParameters();
    private ExaminerViewer viewer;

    public void init(GLAutoDrawable drawable) {
      gl = drawable.getGL();
      glu = drawable.getGLU();

      gl.glClearColor(0, 0, 0, 0);
      float[] lightPosition = new float[] {1, 1, 1, 0};
      float[] ambient       = new float[] { 0.0f, 0.0f, 0.0f, 1.0f };
      float[] diffuse       = new float[] { 1.0f, 1.0f, 1.0f, 1.0f };
      gl.glLightfv(GL.GL_LIGHT0, GL.GL_AMBIENT,  ambient, 0);
      gl.glLightfv(GL.GL_LIGHT0, GL.GL_DIFFUSE,  diffuse, 0);
      gl.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, lightPosition, 0);

      gl.glEnable(GL.GL_LIGHTING);
      gl.glEnable(GL.GL_LIGHT0);
      gl.glEnable(GL.GL_DEPTH_TEST);

      params.setPosition(new Vec3f(0, 0, 0));
      params.setForwardDirection(Vec3f.NEG_Z_AXIS);
      params.setUpDirection(Vec3f.Y_AXIS);
      params.setVertFOV((float) (Math.PI / 8.0));
      params.setImagePlaneAspectRatio(1);
      params.xSize = X_SIZE;
      params.ySize = Y_SIZE;

      gl.glMatrixMode(GL.GL_PROJECTION);
      gl.glLoadIdentity();
      glu.gluPerspective(45, 1, 1, 100);
      gl.glMatrixMode(GL.GL_MODELVIEW);
      gl.glLoadIdentity();

      // Register the window with the ManipManager
      ManipManager manager = ManipManager.getManipManager();
      manager.registerWindow(drawable);

      // Instantiate a HandleBoxManip
      HandleBoxManip manip = new HandleBoxManip();
      manip.setTranslation(new Vec3f(0, 0, -10));
      manager.showManipInWindow(manip, drawable);

      // Instantiate ExaminerViewer
      viewer = new ExaminerViewer(MouseButtonHelper.numMouseButtons());
      viewer.attach(drawable, new HandleBoxManipBSphereProvider(manip));
      viewer.viewAll(gl);
    }

    public void display(GLAutoDrawable drawable) {
      gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
      viewer.update(gl);
      ManipManager.getManipManager().updateCameraParameters(drawable, viewer.getCameraParameters());
      ManipManager.getManipManager().render(drawable, gl);
    }

    // Unused routines
    public void reshape(GLAutoDrawable drawable, int x, int y, int w, int h) {}
    public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
  }

  public static void main(String[] args) {
    Frame frame = new Frame("ExaminerViewer Test");
    frame.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
          System.exit(0);
        }
      });
    frame.setLayout(new BorderLayout());
    GLCanvas canvas =
      GLDrawableFactory.getFactory().createGLCanvas(new GLCapabilities());
    canvas.setSize(400, 400);
    canvas.addGLEventListener(new Listener());
    frame.add(canvas, BorderLayout.CENTER);
    frame.pack();
    frame.show();
  }
}