--- a/busui/staticmaplite/staticmap.php
+++ b/busui/staticmaplite/staticmap.php
@@ -1,1 +1,273 @@
-
+<?php
+
+/**
+ * staticMapLite 0.02
+ *
+ * Copyright 2009 Gerhard Koch
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * @author Gerhard Koch <gerhard.koch AT ymail.com>
+ *
+ * USAGE: 
+ *
+ *  staticmap.php?center=40.714728,-73.998672&zoom=14&size=512x512&maptype=mapnik&markers=40.702147,-74.015794,blues|40.711614,-74.012318,greeng|40.718217,-73.998284,redc
+ *
+ */ 
+
+error_reporting(0);
+ini_set('display_errors','off');
+
+Class staticMapLite {
+
+	protected $tileSize = 256;
+	protected $tileSrcUrl = array(	'mapnik' => 'http://tile.openstreetmap.org/{Z}/{X}/{Y}.png',
+									'osmarenderer' => 'http://c.tah.openstreetmap.org/Tiles/tile/{Z}/{X}/{Y}.png',
+									'cycle' => 'http://c.andy.sandbox.cloudmade.com/tiles/cycle/{Z}/{X}/{Y}.png'
+	);
+	
+	protected $tileDefaultSrc = 'mapnik';
+	protected $markerBaseDir = 'images/markers';
+	protected $osmLogo = 'images/osm_logo.png';
+
+	protected $useTileCache = true;
+	protected $tileCacheBaseDir = 'cache/tiles';
+
+	protected $useMapCache = true;
+	protected $mapCacheBaseDir = 'cache/maps';
+	protected $mapCacheID = '';
+	protected $mapCacheFile = '';
+	protected $mapCacheExtension = 'png';
+	
+	protected $zoom, $lat, $lon, $width, $height, $markers, $image, $maptype;
+	protected $centerX, $centerY, $offsetX, $offsetY;
+
+	public function __construct(){
+		$this->zoom = 0;
+		$this->lat = 0;
+		$this->lon = 0;
+		$this->width = 500;
+		$this->height = 350;
+		$this->markers = array();
+		$this->maptype = $this->tileDefaultSrc;
+	}
+	
+	public function parseParams(){
+		global $_GET;
+		
+		// get zoom from GET paramter
+		$this->zoom = $_GET['zoom']?intval($_GET['zoom']):0;
+		if($this->zoom>18)$this->zoom = 18;
+		
+		// get lat and lon from GET paramter
+		list($this->lat,$this->lon) = split(',',$_GET['center']);
+		$this->lat = floatval($this->lat);
+		$this->lon = floatval($this->lon);
+		
+		// get zoom from GET paramter
+		if($_GET['size']){
+			list($this->width, $this->height) = split('x',$_GET['size']);
+			$this->width = intval($this->width);
+			$this->height = intval($this->height);
+		}
+		if($_GET['markers']){
+			$markers = split('%7C|\|',$_GET['markers']);
+			foreach($markers as $marker){
+					list($markerLat, $markerLon, $markerImage) = split(',',$marker);
+					$markerLat = floatval($markerLat);
+					$markerLon = floatval($markerLon);
+					$markerImage = basename($markerImage);
+					$this->markers[] = array('lat'=>$markerLat, 'lon'=>$markerLon, 'image'=>$markerImage);
+			}
+			
+		}
+		if($_GET['maptype']){
+			if(array_key_exists($_GET['maptype'],$this->tileSrcUrl)) $this->maptype = $_GET['maptype'];
+		}
+	}
+
+	public function lonToTile($long, $zoom){
+		return (($long + 180) / 360) * pow(2, $zoom);
+	}
+
+	public function latToTile($lat, $zoom){
+		return (1 - log(tan($lat * pi()/180) + 1 / cos($lat* pi()/180)) / pi()) /2 * pow(2, $zoom);
+	}
+
+	public function initCoords(){
+		$this->centerX = $this->lonToTile($this->lon, $this->zoom);
+		$this->centerY = $this->latToTile($this->lat, $this->zoom);
+		$this->offsetX = floor((floor($this->centerX)-$this->centerX)*$this->tileSize);
+		$this->offsetY = floor((floor($this->centerY)-$this->centerY)*$this->tileSize);
+	}
+
+	public function createBaseMap(){
+		$this->image = imagecreatetruecolor($this->width, $this->height);
+		$startX = floor($this->centerX-($this->width/$this->tileSize)/2);
+		$startY = floor($this->centerY-($this->height/$this->tileSize)/2);
+		$endX = ceil($this->centerX+($this->width/$this->tileSize)/2);
+		$endY = ceil($this->centerY+($this->height/$this->tileSize)/2);
+		$this->offsetX = -floor(($this->centerX-floor($this->centerX))*$this->tileSize);
+		$this->offsetY = -floor(($this->centerY-floor($this->centerY))*$this->tileSize);
+		$this->offsetX += floor($this->width/2);
+		$this->offsetY += floor($this->height/2);
+		$this->offsetX += floor($startX-floor($this->centerX))*$this->tileSize;
+		$this->offsetY += floor($startY-floor($this->centerY))*$this->tileSize;
+
+		for($x=$startX; $x<=$endX; $x++){
+			for($y=$startY; $y<=$endY; $y++){
+				$url = str_replace(array('{Z}','{X}','{Y}'),array($this->zoom, $x, $y), $this->tileSrcUrl[$this->maptype]);
+				$tileImage = imagecreatefromstring($this->fetchTile($url));
+				$destX = ($x-$startX)*$this->tileSize+$this->offsetX;
+				$destY = ($y-$startY)*$this->tileSize+$this->offsetY;
+				imagecopy($this->image, $tileImage, $destX, $destY, 0, 0, $this->tileSize, $this->tileSize);
+			}
+		}
+	}
+
+
+	public function placeMarkers(){
+		foreach($this->markers as $marker){
+			$markerLat = $marker['lat'];
+			$markerLon = $marker['lon'];
+			$markerImage = $marker['image'];
+			$markerIndex++;
+			$markerFilename = $markerImage?(file_exists($this->markerBaseDir.'/'.$markerImage.".png")?$markerImage:'lightblue'.$markerIndex):'lightblue'.$markerIndex;
+			if(file_exists($this->markerBaseDir.'/'.$markerFilename.".png")){
+				$markerImg = imagecreatefrompng($this->markerBaseDir.'/'.$markerFilename.".png");
+			} else {
+				$markerImg = imagecreatefrompng($this->markerBaseDir.'/lightblue1.png');				
+			}
+			$destX = floor(($this->width/2)-$this->tileSize*($this->centerX-$this->lonToTile($markerLon, $this->zoom)));
+			$destY = floor(($this->height/2)-$this->tileSize*($this->centerY-$this->latToTile($markerLat, $this->zoom)));
+			$destY = $destY - imagesy($markerImg);
+
+			imagecopy($this->image, $markerImg, $destX, $destY, 0, 0, imagesx($markerImg), imagesy($markerImg));
+		
+	};
+}
+
+
+
+	public function tileUrlToFilename($url){
+		return $this->tileCacheBaseDir."/".str_replace(array('http://'),'',$url);
+	}
+
+	public function checkTileCache($url){
+		$filename = $this->tileUrlToFilename($url);
+		if(file_exists($filename)){
+			return file_get_contents($filename);
+		}
+	}
+	
+	public function checkMapCache(){
+		$this->mapCacheID = md5($this->serializeParams());
+		$filename = $this->mapCacheIDToFilename();
+		if(file_exists($filename)) return true;
+	}
+
+	public function serializeParams(){		
+		return join("&",array($this->zoom,$this->lat,$this->lon,$this->width,$this->height, serialize($this->markers),$this->maptype));
+	}
+	
+	public function mapCacheIDToFilename(){
+		if(!$this->mapCacheFile){
+			$this->mapCacheFile = $this->mapCacheBaseDir."/".substr($this->mapCacheID,0,2)."/".substr($this->mapCacheID,2,2)."/".substr($this->mapCacheID,4);
+		}
+		return $this->mapCacheFile.".".$this->mapCacheExtension;
+	}
+
+
+	
+	public function mkdir_recursive($pathname, $mode){
+		is_dir(dirname($pathname)) || $this->mkdir_recursive(dirname($pathname), $mode);
+		return is_dir($pathname) || @mkdir($pathname, $mode);
+	}
+	public function writeTileToCache($url, $data){
+		$filename = $this->tileUrlToFilename($url);
+		$this->mkdir_recursive(dirname($filename),0777);
+		file_put_contents($filename, $data);
+	}
+	
+	public function fetchTile($url){
+		if($this->useTileCache && ($cached = $this->checkTileCache($url))) return $cached;
+		$ch = curl_init(); 
+		curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
+		curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0");
+		curl_setopt($ch, CURLOPT_URL, $url); 
+		$tile = curl_exec($ch); 
+		curl_close($ch); 
+		if($this->useTileCache){
+			$this->writeTileToCache($url,$tile);
+		}
+		return $tile;
+
+	}
+
+	public function copyrightNotice(){
+			$logoImg = imagecreatefrompng($this->osmLogo);
+			imagecopy($this->image, $logoImg, imagesx($this->image)-imagesx($logoImg), imagesy($this->image)-imagesy($logoImg), 0, 0, imagesx($logoImg), imagesy($logoImg));
+		
+	}
+	
+	public function sendHeader(){
+		header('Content-Type: image/png');
+		$expires = 60*60*24*14;
+		header("Pragma: public");
+		header("Cache-Control: maxage=".$expires);
+		header('Expires: ' . gmdate('D, d M Y H:i:s', time()+$expires) . ' GMT');
+	}
+
+	public function makeMap(){
+		$this->initCoords();		
+		$this->createBaseMap();
+		if(count($this->markers))$this->placeMarkers();
+		if($this->osmLogo) $this->copyrightNotice();
+	}
+
+	public function showMap(){
+		$this->parseParams();
+		if($this->useMapCache){
+			// use map cache, so check cache for map
+			if(!$this->checkMapCache()){
+				// map is not in cache, needs to be build
+				$this->makeMap();
+				$this->mkdir_recursive(dirname($this->mapCacheIDToFilename()),0777);
+				imagepng($this->image,$this->mapCacheIDToFilename(),9);
+				$this->sendHeader();	
+				if(file_exists($this->mapCacheIDToFilename())){
+					return file_get_contents($this->mapCacheIDToFilename());
+				} else {
+					return imagepng($this->image);		
+				}
+			} else {
+				// map is in cache
+				$this->sendHeader();	
+				return file_get_contents($this->mapCacheIDToFilename());
+			}
+
+		} else {
+			// no cache, make map, send headers and deliver png
+			$this->makeMap();
+			$this->sendHeader();	
+			return imagepng($this->image);		
+			
+		}
+	}
+
+}
+
+$map = new staticMapLite();
+print $map->showMap();
+
+?>