[Mapbender-commits] r5374 - trunk/mapbender/http/classes

[svn_mapbender at osgeo.org]

Author: christoph
Date: 2010-01-20 08:47:49 -0500 (Wed, 20 Jan 2010)
New Revision: 5374

Modified:
   trunk/mapbender/http/classes/class_map.php
Log:


Modified: trunk/mapbender/http/classes/class_map.php
===================================================================
--- trunk/mapbender/http/classes/class_map.php	2010-01-20 13:36:12 UTC (rev 5373)
+++ trunk/mapbender/http/classes/class_map.php	2010-01-20 13:47:49 UTC (rev 5374)
@@ -136,7 +136,33 @@
 		}
 		$this->setExtent($aMapbenderBbox);
 	}
+	/**
+	 * 
+	 * @return Int scale of map
+	 */
+	public function getScale($mapResolutionDpi = MB_RESOLUTION){
+		$scale;
+		$xtenty;
+		$bbox = $this->getExtentInfo();
 		
+		if ($this->getEpsg() == "EPSG:4326") {
+			$pxLenx = ($bbox[2] - $bbox[0]) / $this->getWidth();
+			$pxLeny = ($bbox[3] - $bbox[1]) / $this->getHeight();
+			$lat_from = ((($bbox[3] - $bbox[1]) / 2) * M_PI) / 180;
+			$lat_to = ((($bbox[3] - $bbox[1]) / 2 + $pxLeny) * M_PI) / 180;
+			$lon_from = ((($bbox[2] - $bbox[0]) / 2) * M_PI) / 180;
+			$lon_to = ((($bbox[2] - $bbox[0]) / 2 + $pxLeny) * M_PI) / 180;
+			$dist = 6371229 * acos(sin($lat_from) * sin($lat_to) + cos($lat_from) * cos($lat_to) * cos($lon_from - $lon_to));
+			$scale = ($dist / sqrt(2)) * ($mapResolutionDpi * 100);
+		}
+		else {
+			$xtenty = $bbox[3] - $bbox[1];
+			$scale = ($xtenty / $this->getHeight()) * ($mapResolutionDpi * 100);
+		}
+		return round($scale);
+	}	
+	
+	
 	/**
 	 * 
 	 * @return String EPSG code of the map.
@@ -584,7 +610,7 @@
 			// reset the WMS array
 			// BEWARE, SUPER UGLY CODE AHEAD!!
 			// (BUT THERE IS NO OTHER WAY TO DO IT)
-			if (strpos($row["e_js_file"], "ovnf.php") !== false) {
+			if (strpos($row["e_js_file"], "mb_overview.js") !== false) {
 //				$e = new mb_exception("guess this is the OV");
 
 				$ov_sql = "SELECT var_value FROM gui_element_vars WHERE " .