From: Sarah Hoffmann <lonvia@denofr.de>
Date: Thu, 30 Apr 2015 19:26:11 +0000 (+0200)
Subject: Merge branch 'feature/polygon-simplification' of https://github.com/a1exsh/Nominatim
X-Git-Tag: v.2.5.0~62
X-Git-Url: https://git.openstreetmap.org./nominatim.git/commitdiff_plain/a7e1b3b1eeec1cebc71ee7ae0282dfe3bb31456c?hp=27753fb8dbce6bb595f95bad637078ab2106d794

Merge branch 'feature/polygon-simplification' of https://github.com/a1exsh/Nominatim
---

diff --git a/lib/Geocode.php b/lib/Geocode.php
index 5f4a0174..212eebb9 100644
--- a/lib/Geocode.php
+++ b/lib/Geocode.php
@@ -12,6 +12,7 @@
 		protected $bIncludePolygonAsGeoJSON = false;
 		protected $bIncludePolygonAsKML = false;
 		protected $bIncludePolygonAsSVG = false;
+		protected $fPolygonSimplificationThreshold = 0.0;
 
 		protected $aExcludePlaceIDs = array();
 		protected $bDeDupe = true;
@@ -102,6 +103,11 @@
 			$this->bIncludePolygonAsSVG = $b;
 		}
 
+		function setPolygonSimplificationThreshold($f)
+		{
+			$this->fPolygonSimplificationThreshold = $f;
+		}
+
 		function setDeDupe($bDeDupe = true)
 		{
 			$this->bDeDupe = (bool)$bDeDupe;
@@ -1599,7 +1605,16 @@
 					if ($this->bIncludePolygonAsKML) $sSQL .= ",ST_AsKML(geometry) as askml";
 					if ($this->bIncludePolygonAsSVG) $sSQL .= ",ST_AsSVG(geometry) as assvg";
 					if ($this->bIncludePolygonAsText || $this->bIncludePolygonAsPoints) $sSQL .= ",ST_AsText(geometry) as astext";
-					$sSQL .= " from placex where place_id = ".$aResult['place_id'];
+					$sFrom = " from placex where place_id = ".$aResult['place_id'];
+					if ($this->fPolygonSimplificationThreshold > 0)
+					{
+						$sSQL .= " from (select place_id,centroid,ST_SimplifyPreserveTopology(geometry,".$this->fPolygonSimplificationThreshold.") as geometry".$sFrom.") as plx";
+					}
+					else
+					{
+						$sSQL .= $sFrom;
+					}
+
 					$aPointPolygon = $this->oDB->getRow($sSQL);
 					if (PEAR::IsError($aPointPolygon))
 					{
diff --git a/website/search.php b/website/search.php
index a9e20d4e..bf27ef9a 100755
--- a/website/search.php
+++ b/website/search.php
@@ -68,6 +68,11 @@
 		$oGeocode->setIncludePolygonAsSVG($bAsSVG);
 	}
 
+	// Polygon simplification threshold (optional)
+	$fThreshold = 0.0;
+	if (isset($_GET['polygon_threshold'])) $fThreshold = (float)$_GET['polygon_threshold'];
+	$oGeocode->setPolygonSimplificationThreshold($fThreshold);
+
 	$oGeocode->loadParamArray($_GET);
 
 	if (CONST_Search_BatchMode && isset($_GET['batch']))