[Bprocessor-commit] gl/src/net/sourceforge/bprocessor/gl/tool SelectTool.java,NONE,1.1

[rimestad <rim...@us...>]

Update of /cvsroot/bprocessor/gl/src/net/sourceforge/bprocessor/gl/tool
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv13185

Added Files:
	SelectTool.java 
Log Message:
Implements tools for selection

--- NEW FILE: SelectTool.java ---
//---------------------------------------------------------------------------------
// $Id: SelectTool.java,v 1.1 2005/07/26 12:34:09 rimestad Exp $
//
// Copyright (c) 2005      The BProcessor Team (http://bprocessor.sourceforge.net) 
// Released under the Lesser GNU Public License v2.1
//---------------------------------------------------------------------------------
package net.sourceforge.bprocessor.gl.tool;

import net.sourceforge.bprocessor.gl.GLView;
import net.sourceforge.bprocessor.gl.view.View;

import net.sourceforge.bprocessor.kernel.notification.Notification;
import net.sourceforge.bprocessor.kernel.notification.Notifier;

import net.sourceforge.bprocessor.model.Vertex;
import net.sourceforge.bprocessor.model.VertexFacade;

import java.awt.event.MouseEvent;

import java.util.Iterator;
import java.util.Set;

import org.apache.log4j.Logger;
/**
 * The abstracttool
 */
public class SelectTool extends AbstractTool {
  /** The logger */
  private static Logger log = Logger.getLogger(SelectTool.class);

  /**
   * KeyListener for the GL Canvas
   * @param glv The 3D canvas
   */
  public SelectTool(GLView glv) {
    super(glv);
  }

  /** 
   * Invoked when the mouse cursor has been moved
   * @param e The MouseEvent object 
   */
  protected void moved(MouseEvent e) {
  }

  /** 
   * Invoked when the mouse is held pressed and moved
   * @param e The MouseEvent object 
   */
  protected void dragged(MouseEvent e) {
  }

  /**
   * Invoked when a mouse button has been pressed on a component.
   * @param e The MouseEvent object
   */
  protected void pressed(MouseEvent e) {
  }
  
  /**
   * Invoked when a mouse button has been released on a component.
   * @param e The MouseEvent
   */
  protected void released(MouseEvent e) {
    if (e.getButton() == MouseEvent.BUTTON1) {
      int x = e.getX();
      int y = e.getY();
      View view = glv.getView();
      double[] coords = view.toCanvasCoords(new double[]{x, y});

      Vertex v = vertexCollide(coords);
      if (v != null) {
        Notification n = new Notification(Notification.VERTEX_SELECTED, v.getId());
        Notifier.getInstance().sendNotification(n);
      }
    }
  }

 /**
   * Check if this cordinate collide with another vertex
   * @param coord The cordinate to check for collision at
   * @return The excisting vertex at coord, null if there ain't any
   */
  protected Vertex vertexCollide(double[] coord) {
    Set vertexes = VertexFacade.getInstance().findAll();
    Iterator it = vertexes.iterator();
    while (it.hasNext()) {
      Vertex v = (Vertex)it.next();
      if (collide(v.getX(), coord[0]) &&
          collide(v.getY(), coord[1]) &&
          collide(v.getZ(), coord[2])) {
        return v;
      }
    }
    return null;
  }

  /**
   * Check if a and b is as close as EPSILON
   * @param a The target
   * @param b The value
   * @return true if |a - b| < EPSILON false otherwise
   */
  protected boolean collide(double a, double b) {
    return Math.abs(a - b) < EPSILON;
  }
}