Reverse geocode include geometry

[nominatim.git] / lib / lib.php

diff --git a/lib/lib.php b/lib/lib.php
index 2134e1a44d78aae77f6769a3cac28f35bae2effa..51bf7ebb13381e32507535ca394f7aad46545685 100644 (file)
--- a/lib/lib.php
+++ b/lib/lib.php
@@ -673,6 +673,31 @@
                return $aOrders;
        }
 
+       function getResultDiameter($aResult)
+       {
+               $aClassType = getClassTypes();
+
+               $fDiameter = 0.0001;
+
+               if (isset($aResult['class'])
+                         && isset($aResult['type'])
+                         && isset($aResult['admin_level'])
+                         && isset($aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['defdiameter'])
+                               && $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['defdiameter'])
+               {
+                       $fDiameter = $aClassType[$aResult['class'].':'.$aResult['type'].':'.$aResult['admin_level']]['defdiameter'];
+               }
+               elseif (isset($aResult['class'])
+                         && isset($aResult['type'])
+                         && isset($aClassType[$aResult['class'].':'.$aResult['type']]['defdiameter'])
+                               && $aClassType[$aResult['class'].':'.$aResult['type']]['defdiameter'])
+               {
+                       $fDiameter = $aClassType[$aResult['class'].':'.$aResult['type']]['defdiameter'];
+               }
+
+               return $fDiameter;
+       }
+
 
        function javascript_renderData($xVal, $iOptions = 0)
        {
@@ -1022,3 +1047,49 @@
 
                return array('lat' => $fQueryLat, 'lon' => $fQueryLon, 'query' => $sQuery);
        }
+
+
+       function geometryText2Points($geometry_as_text, $fRadius)
+       {
+               $aPolyPoints = NULL;
+               if (preg_match('#POLYGON\\(\\(([- 0-9.,]+)#', $geometry_as_text, $aMatch))
+               {
+                       preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/', $aMatch[1], $aPolyPoints, PREG_SET_ORDER);
+               }
+               elseif (preg_match('#LINESTRING\\(([- 0-9.,]+)#', $geometry_as_text, $aMatch))
+               {
+                       preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/', $aMatch[1], $aPolyPoints, PREG_SET_ORDER);
+               }
+               elseif (preg_match('#MULTIPOLYGON\\(\\(\\(([- 0-9.,]+)#', $geometry_as_text, $aMatch))
+               {
+                       preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/', $aMatch[1], $aPolyPoints, PREG_SET_ORDER);
+               }
+               elseif (preg_match('#POINT\\((-?[0-9.]+) (-?[0-9.]+)\\)#', $geometry_as_text, $aMatch))
+               {
+                       $aPolyPoints = createPointsAroundCenter($aMatch[1], $aMatch[2], $fRadius);
+               }
+
+               if (isset($aPolyPoints))
+               {
+                       $aResultPoints = array();
+                       foreach($aPolyPoints as $aPoint)
+                       {
+                               $aResultPoints[] = array($aPoint[1], $aPoint[2]);
+                       }
+                       return $aResultPoints;
+               }
+
+               return;
+       }
+
+       function createPointsAroundCenter($fLon, $fLat, $fRadius)
+       {
+                       $iSteps = max(8, min(100, ($fRadius * 40000)^2));
+                       $fStepSize = (2*pi())/$iSteps;
+                       $aPolyPoints = array();
+                       for($f = 0; $f < 2*pi(); $f += $fStepSize)
+                       {
+                               $aPolyPoints[] = array('', $fLon+($fRadius*sin($f)), $fLat+($fRadius*cos($f)) );
+                       }
+                       return $aPolyPoints;
+       }