Android Open Source - Android-Gestures Bounding Box

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License

The source code is released under:

Copyright (c) 2010, Michael Marner (michael@20papercups.net) All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the fol...

Java Source Code

/*
 * Copyright (c) 2010, Michael Marner (michael@20papercups.net) 
 * All rights reserved.//from   w w  w .j a v a 2s .  com
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the <organization> nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


package com.michaelmarner.gestures;

import java.util.List;

/**
 * A simple 2D axis aligned bounding box.
 * 
 * @author Michael Marner (michael@20papercups.net)
 *
 */
public class BoundingBox {

  /**
   * The minimum coordinate.
   */
  private Point min;
  
  /**
   * The maximum coordinates.
   */
  private Point max;
  
  /**
   * Creates a bounding box for a set of points.
   * 
   * @param points The list of points to enclose.
   */
  public BoundingBox(List<Point> points) {
    min = new Point(Integer.MAX_VALUE, Integer.MAX_VALUE);
    max = new Point(Integer.MIN_VALUE, Integer.MIN_VALUE);
    
    for (Point p : points) {
      if (p.x < min.x)
        min.x = p.x;
      if (p.y < min.y)
        min.y = p.y;
      
      if (p.x > max.x)
        max.x = p.x;
      if (p.y > max.y)
        max.y = p.y;
    }
  }
  
  /**
   * Returns the width of this bounding box.
   * 
   * @return Returns the width of this bounding box.
   */
  public float getWidth() {
    return max.x - min.x;
  }
  
  /**
   * Returns the height of this bounding box.
   * 
   * @return Returns the height of this bounding box.
   */
  public float getHeight() {
    return max.y - min.y;
  }
}

Java Source Code List

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