Rectangle.php

<?php
	/* Libchart - PHP chart library
	 * Copyright (C) 2005-2008 Jean-Marc Trémeaux (jm.tremeaux at gmail.com)
	 * 
	 * This program is free software: you can redistribute it and/or modify
	 * it under the terms of the GNU General Public License as published by
	 * the Free Software Foundation, either version 3 of the License, or
	 * (at your option) any later version.
	 * 
	 * This program is distributed in the hope that it will be useful,
	 * but WITHOUT ANY WARRANTY; without even the implied warranty of
	 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	 * GNU General Public License for more details.
	 *
	 * You should have received a copy of the GNU General Public License
	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
	 * 
	 */
	
	/**
	 * A rectangle identified by the top-left and the bottom-right corners.
	 *
	 * @author Jean-Marc Trémeaux (jm.tremeaux at gmail.com)
	 * @Created on 27 july 2007
	 */
	class Rectangle {
		/**
		 * Top left X.
		 */
		public $x1;

		/**
		 * Top left Y.
		 */
		public $y1;
		
		/**
		 * Bottom right X.
		 */
		public $x2;
		
		/**
		 * Bottom right Y.
		 */
		public $y2;
	
		/**
		 * Constructor of Rectangle.
		 *
		 * @param x1 Left edge coordinate
		 * @param y1 Upper edge coordinate
		 * @param x2 Right edge coordinate
		 * @param y2 Bottom edge coordinate
		 */
		public function __construct($x1, $y1, $x2, $y2) {
			$this->x1 = $x1;
			$this->y1 = $y1;
			$this->x2 = $x2;
			$this->y2 = $y2;
		}
		
		/**
		 * Apply a padding and returns the resulting rectangle.
		 * The result is an enlarged rectangle.
		 *
		 * @return Padded rectangle
		 */
		public function getPaddedRectangle($padding) {
			$rectangle = new Rectangle(
					$this->x1 + $padding->left,
					$this->y1 + $padding->top,
					$this->x2 - $padding->right,
					$this->y2 - $padding->bottom
			);
			
			//echo "(" . $this->x1 . "," . $this->y1 . ") (" . $this->x2 . "," . $this->y2 . ")<br>";
			return $rectangle;
		}
	}
?>