//<?php
/* Written by Kirjanov D.A. <kirjanov@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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

class ImageRenderer
{	
	var $image_width;
	var $image_height;
	
	/* Количетсво блоков разбиения */
	var $width_blocks;
	var $height_blocks;
	
	var $block_height_size;
	var $block_width_size;
	
	var $level;
	
	/* Коэффициенты измения относительной координаты для отрисованного объекта */
	var $zoom_factor_x;
	var $zoom_factor_y;
	
	var $ellipse_radius=5;
	
	var $images_path;
	
	var $map_objects = array();
	
	
	function ImageRenderer($image_width, $image_height, $horizontal_blocks, $vertical_blocks , $map_name, $x, $y, $level, $extension ,$objects)
	{
		if (is_null($x) && is_null($y))
			$x = $y = 0;
		$level = ($level)? $level : 0;
		$this->level = $level;
		$this->image_width = $image_width;
		$this->image_height = $image_height;
		$this->width_blocks = $horizontal_blocks;
		$this->height_blocks = $vertical_blocks;
		$this->block_height_size = (integer)($this->image_height/$this->height_blocks);
		$this->block_width_size = (integer)$this->image_width/$this->width_blocks;
		$this->map_objects = $objects;
		
		$this->zoom_factor_x = pow($this->height_blocks,$level);
		$this->zoom_factor_y = pow($this->width_blocks, $level);
		
				
	}
	/*Функция отрисовки обьекта на карте
	*ВХОД:
	*======================================
	*$x - номер ячейки по вертикали
	*$y - номер ячейки по горизонтали
	*$map_name - имя изображения, на котором формируются оъекты
	*$extension - расширение файла с изображением
	*$level - уровеь отображения картинки по глубине
	*======================================
	*/	
	function render_object($x, $y, $map_name, $extension, $level)
	{
		$ellipse_radius = 10;
		$image_descr = @imagecreatefromjpeg($this->images_path.$map_name.$x.$y.$level.$extension);
		if (!$image_descr)
		{
			echo "<strong>error loading image from: ".$map_name.$x.$y.$level.$extension."</strong>";
			exit;			
		}
		$obj_color2 = @imagecolorallocate($image_descr,240,240,0);
		$obj_color1 = @imagecolorallocate($image_descr,200,0,0);

		$ellipse_radius = $this->ellipse_radius*$this->zoom_factor_x;
		if (is_array($this->map_objects)) foreach ($this->map_objects as $object)
		{
			if ($object = $this->create_coords(&$object,$x, $y, $level))
				{
					if ($object['object_y'] && $object['object_x'])
					/*if (!$this->level)
					{
						imagefilledellipse($image_descr,$object['object_y'],$object['object_x'],$ellipse_radius,$ellipse_radius,$obj_color);
						} else {*/
						imagefilledellipse($image_descr,$object['object_y']*$this->zoom_factor_y,$object['object_x']*$this->zoom_factor_x,$ellipse_radius+3*$this->zoom_factor_y,$ellipse_radius+3*$this->zoom_factor_y,$obj_color1);
						imagefilledellipse($image_descr,$object['object_y']*$this->zoom_factor_y,$object['object_x']*$this->zoom_factor_x,$ellipse_radius,$ellipse_radius,$obj_color2);
						
						
/*						}*/
					}							
		}
		header( 'Content-Type: image/jpeg' );			
		imagejpeg($image_descr, '', 90);
		imagedestroy($image_descr);
	}
	/* Функция вычисления относительных координат для объекта
	*ВХОД:
	*======================================
	*$object - элемент массива c абсолютной координатой
	*$x - номер ячейки по вертикали
	*$y - номер ячейки по горизонтали
	*$level - уровеь отображения картинки по глубине
	*ВЫХОД:
	массив $object с относительными координатами
	*======================================
	*/	
	
	function create_coords($object, $x, $y, $level)
	{

		if (!$this->level)
			{
				$x_rel_first = 0;
				$y_rel_first = 0;
				$x_rel_last = $this->image_height;
				$y_rel_last = $this->image_width;										
			} else {
				$x_rel_first = $x * $this->block_height_size;
				$y_rel_first = $y * $this->block_width_size;
				$x_rel_last = $x_rel_first + $this->block_height_size;
				$y_rel_last = $y_rel_first + $this->block_width_size;
			}
			if (($object['object_x'] >= $x_rel_first && $object['object_x'] <= $x_rel_last) && ($object['object_y'] >= $y_rel_first && $object['object_y'] <= $y_rel_last))
				{
					$object['object_x'] -= $x_rel_first;
					$object['object_y'] -= $y_rel_first;
					return $object;
				}
				return 0;
				
					
	}
	
	function generate_map_tags($x, $y, $level)
	{
		reset($this->map_objects);
		foreach ($this->map_objects as $object)
		{
			if ($object = $this->create_coords($object,$x, $y, $level))
			if ($object['object_x'] && $object['object_y'])
			{
				echo "<area shape=circle coords=".($object['object_y']*$this->zoom_factor_y).",".($object['object_x']*$this->zoom_factor_x).",".($this->ellipse_radius*$this->zoom_factor_x)." href=\"javascript:GetInfo(".$object['object_id'].")\" title='".$object['object_name']."'/>";				
			}
			
		}
						
	}
	
	
}
class Map
{

	var $display_map_shape = "rect";
	var $map_name;
	
	var $level;
	

	/* размер изображения */	
	var $map_width;
	var $map_height;
	

	/* количество блоков */
	var $width_blocks;
	var $height_blocks;
	
	/* размеры блоков в пикселах */
	var $block_height_size;
	var $block_width_size;
	
	var $map_script_name = "map.php?1";
	var $render_file = "imagerender.php?1";
	
	var $map_coords = array();
	
	function Map($image_width, $image_height, $horizontal_blocks, $vertical_blocks,$map_name ,$level=0, $maximum_level,$x, $y, $extension, $objects)
	{
		$level = ($level)? $level : 0;
		//if ($level == $maximum_level-1)	/* вычитается для отмены генерирования map и тега usemap на максимальном уровне */
			//Map::stop_rendering($map_name, $x, $y, $extension, $level);
		$this->level = ($level>$maximum_level)?$maximum_level : $level;
		$this->maximum_level = $maximum_level;
		$this->map_width = $image_width;
		$this->map_height = $image_height;
		$this->width_blocks = $horizontal_blocks;
		$this->height_blocks = $vertical_blocks;
		$this->x = ($x)?$x:0;
		$this->y = ($y)?$y:0;
		$this->map_name = $map_name;
		$this->objects = $objects;
		$this->block_height_size = (integer)($this->map_height/$this->height_blocks);
		$this->block_width_size = (integer)$this->map_width/$this->width_blocks;
		$this->create_map_coords();

		$this->zoom_factor_x = pow($this->height_blocks,$level);
		$this->zoom_factor_y = pow($this->width_blocks, $level);
		
				
	}
	/* Функция вычисления индексов для разбитой карты
	*ВХОД:
	*======================================
	*ВЫХОД: индексы сохранены  в переменной класса map_coords
	*======================================
	*/	
		
	function create_map_coords()
	{	
		for($i=0; $i < $this->height_blocks; $i++)
		{
				for($j = 0; $j < $this->width_blocks; $j++)
				{
					$this->map_coords[$i][$j]["x_1"] = $j*$this->block_width_size;
					$this->map_coords[$i][$j]["y_1"] = $i*$this->block_height_size;
					$this->map_coords[$i][$j]["x_2"] = ($j+1)*$this->block_width_size; 
					$this->map_coords[$i][$j]["y_2"] = ($i+1)*$this->block_height_size;  										
				}
				
						
		}
		
	}
	/* Функция генерирования тега map 
	*ВХОД:
	*======================================
	*$object - элемент массива c абсолютными координатами
	*ВЫХОД:
	тег map с областями, соответствующими индексам
	*======================================
	*/	
	function display_map($objects)	
	{
		echo "<map id=$this->map_name>";
/*		for($i=0; $i < $this->height_blocks; $i++)
		{
				for($j = 0; $j < $this->width_blocks; $j++)
				{
					$in = $this->x*$this->height_blocks + $i;
					$jn = $this->y*$this->width_blocks + $j;
					echo "<area shape=$this->display_map_shape coords=".$this->map_coords[$i][$j]['x_1'].",".$this->map_coords[$i][$j]['y_1'].",".$this->map_coords[$i][$j]['x_2'].",".$this->map_coords[$i][$j]['y_2']." href=map.php?i=".$in."&j=".$jn."&level=".($this->level+1)." />";
				}
		}*/
		$img_ren = new ImageRenderer($this->map_width, $this->map_height, $this->width_blocks, $this->height_blocks, $map_name,$this->x,$this->y, $this->level, $extension, $objects);
		//$img_ren->render_object($this->x, $this->x, "map", ".jpg",$this->level);
		$img_ren->generate_map_tags($this->x, $this->y, $this->level);

		echo "</map>";
		
	}
	/* Функция создает таблицу с навигацией вверх/вниз, влево/вправо
	*ВХОД:
	*======================================
	*$name - имя карты
	*$x - номер ячейки по вертикали
	*$y - номер ячейки по горизонтали
	*$extension - расширение файла с изображением
	*ВЫХОД:
	таблица
	*======================================
	*/	
	function create_image($name, $x, $y, $render_file)
	{		
		global $site_url;
		
		if (is_null($x) && is_null($y))
			$x = $y = 0;
		echo "<table border=0 cellspacing=0 cellpadding=0><tr><td>&nbsp;</td><td align=center>&nbsp;"; /* ссылка ВВЕРХ */
		if ($x)
		{
			echo "<a href={$this->map_script_name}&i=".($x-1)."&j=".$y."&level=".($this->level)."><img src={$site_url}images/icons/up.gif border=0 alt=Вверх></a>";
		}
		echo "</td><td>&nbsp;</td></tr><tr><td align=center>&nbsp;";	/* ссылки ВЛЕВО/ВПРАВО */
		if ($this->level && $y)
		{
			echo "<a href={$this->map_script_name}&i=".$x."&j=".($y-1)."&level=".($this->level)."><img src={$site_url}images/icons/left.gif border=0 alt=Влево></a>";
		}
		echo "</td><td>";

		echo "<img onClick='javascript:DoAction(this)' name='Map' id='Map' src=\"$render_file&i=".$x."&j=".$y."&level=".$this->level."\" usemap='#".$name."' style=\"width:".$this->map_width."px;height:".$this->map_height."px;
        position:relative; cursor:pointer;\" border=0>";
		
		echo "</td>";
		$this->map_name = strval($name);
		echo "<td align=center>&nbsp;";
		if ($this->level && (!$y || $y < $this->zoom_factor_y-1))
		{
			echo "<a href={$this->map_script_name}&i=".$x."&j=".($y+1)."&level=".($this->level)."><img src={$site_url}images/icons/right.gif border=0 alt=Вправо></a>";
		}
		echo "</td></tr>";
		echo "<tr><td>&nbsp;</td><td align=center>&nbsp;"; /* ссылка ВНИЗ */
		if ($this->level && $x < $this->zoom_factor_x-1)
		{
			echo "<a href={$this->map_script_name}&i=".($x+1)."&j=".$y."&level=".($this->level)."><img src={$site_url}images/icons/down.gif border=0 alt=Вниз></a></td>";
		}
		echo "</td><td>&nbsp;</td></tr>";
		echo "</table>";
	}
	/* Функция вывода таблицы без тега map на максимальном уровне
	*ВХОД:
	*======================================
	*$name - имя карты
	*$x - номер ячейки по вертикали
	*$y - номер ячейки по горизонтали
	*$extension - расширение файла с изображением
	*ВЫХОД:
	таблица
	*======================================
	*/	
	function stop_rendering($map_name, $x, $y, $extension, $level)
	{
		echo "<table><tr><td></td><td align=center>";
		if ($x)
		{
			echo "<a href=$map_name.php?i=".($x-1)."&j=".$y."&level=".($level).">ВВЕРХ</a>";
			
		} else {
			echo "</td><td></td></tr>";
		}
		echo "<tr><td align=center>";
		if ($y)
		{
			echo "<a href=$map_name.php?i=".$x."&j=".($y-1)."&level=".($level).">ВЛЕВО</a>";
			
		} else {
			echo "</td>";
		} 
		echo "<td>";

		echo "<img onClick='javascript:DoAction(this)' name='Map' id='Map' src=\"$render_file&i=".$x."&j=".$y."&level=".$this->level."\" usemap='#".$name."' style=\"width:".$this->map_width."px;height:".$this->map_height."px;
        position:relative; cursor:pointer;\">";
		
		echo "</td>";
		$this->map_name = strval($name);
		echo "<td align=center>";
		if (!$y || $y < $this->width_blocks)
		{
			echo "<a href=$map_name.php?i=".$x."&j=".($y+1)."&level=".($level).">ВПРАВО</a>";
		} else {
			echo "</td>";
											
		}
		echo "</tr>";
		echo "<tr><td></td><td align=center>"; //last table here. Down link here
		if (!$x || $x < $this->width_blocks)
		{
			echo "<a href=$map_name.php?i=".($x+1)."&j=".$y."&level=".($level).">ВНИЗ</a></td>";
			
		} else {
			echo "</td>";
		}
		echo "<td></td></tr>";
		echo "</table>";
		
						
	}	
	

	function create_coords(&$setx, &$sety, $x, $y, $level)
	{

		if (!$this->level)
			{
				$x_rel_first = 0;
				$y_rel_first = 0;
									
			} else {
				$x_rel_first = $x * $this->block_height_size;
				$y_rel_first = $y * $this->block_width_size;

			}
				
				$setx = round($setx/$this->zoom_factor_x);
				$sety = round($sety/$this->zoom_factor_y);
				
				$setx += $x_rel_first;
				$sety += $y_rel_first;
				
					
	}
	
}
//?>