[Mapbender-commits] r3807 - in branches/print_dev/http: classes print/classes

[svn_mapbender at osgeo.org]

Author: mschulz
Date: 2009-03-25 10:07:03 -0400 (Wed, 25 Mar 2009)
New Revision: 3807

Modified:
   branches/print_dev/http/classes/class_map.php
   branches/print_dev/http/print/classes/mbTemplatePdf.php
Log:
class_map: added scale calculation

Modified: branches/print_dev/http/classes/class_map.php
===================================================================
--- branches/print_dev/http/classes/class_map.php	2009-03-24 13:06:39 UTC (rev 3806)
+++ branches/print_dev/http/classes/class_map.php	2009-03-25 14:07:03 UTC (rev 3807)
@@ -137,7 +137,34 @@
 		}
 		$this->setExtent($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.

Modified: branches/print_dev/http/print/classes/mbTemplatePdf.php
===================================================================
--- branches/print_dev/http/print/classes/mbTemplatePdf.php	2009-03-24 13:06:39 UTC (rev 3806)
+++ branches/print_dev/http/print/classes/mbTemplatePdf.php	2009-03-25 14:07:03 UTC (rev 3807)
@@ -48,6 +48,7 @@
 		$aMap->setWidth($elementConf->width);
 		$aMap->setHeight($elementConf->height);
 		$aMap->calculateExtent($aMbBbox);
+		$this->mapinfo["scale"] = $aMap->getScale($elementConf->res_dpi);
 		$adjustedMapExt = $aMap->getExtentInfo();
 		return implode(",",$adjustedMapExt);
 	}