Merge remote-tracking branch 'upstream/master'

[nominatim.git] / lib / PlaceLookup.php

diff --git a/lib/PlaceLookup.php b/lib/PlaceLookup.php
index c5129fee31006d47a011251a82a08237458703a3..04e45d5aba704657c933614900fdef835fd9c403 100644 (file)
--- a/lib/PlaceLookup.php
+++ b/lib/PlaceLookup.php
@@ -15,6 +15,14 @@
 
                protected $bNameDetails = false;
 
 
                protected $bNameDetails = false;
 

+               protected $bIncludePolygonAsPoints = false;
+               protected $bIncludePolygonAsText = false;
+               protected $bIncludePolygonAsGeoJSON = false;
+               protected $bIncludePolygonAsKML = false;
+               protected $bIncludePolygonAsSVG = false;
+               protected $fPolygonSimplificationThreshold = 0.0;
+
+

                function PlaceLookup(&$oDB)
                {
                        $this->oDB =& $oDB;
                function PlaceLookup(&$oDB)
                {
                        $this->oDB =& $oDB;


@@ -46,6 +54,48 @@
                        }
                }
 
                        }
                }
 

+
+               function setIncludePolygonAsPoints($b = true)
+               {
+                       $this->bIncludePolygonAsPoints = $b;
+               }
+
+               function getIncludePolygonAsPoints()
+               {
+                       return $this->bIncludePolygonAsPoints;
+               }
+
+               function setIncludePolygonAsText($b = true)
+               {
+                       $this->bIncludePolygonAsText = $b;
+               }
+
+               function getIncludePolygonAsText()
+               {
+                       return $this->bIncludePolygonAsText;
+               }
+
+               function setIncludePolygonAsGeoJSON($b = true)
+               {
+                       $this->bIncludePolygonAsGeoJSON = $b;
+               }
+
+               function setIncludePolygonAsKML($b = true)
+               {
+                       $this->bIncludePolygonAsKML = $b;
+               }
+
+               function setIncludePolygonAsSVG($b = true)
+               {
+                       $this->bIncludePolygonAsSVG = $b;
+               }
+
+               function setPolygonSimplificationThreshold($f)
+               {
+                       $this->fPolygonSimplificationThreshold = $f;
+               }
+
+

                function setPlaceID($iPlaceID)
                {
                        $this->iPlaceID = $iPlaceID;
                function setPlaceID($iPlaceID)
                {
                        $this->iPlaceID = $iPlaceID;


@@ -219,5 +269,110 @@
                        return $aAddress;
                }
 
                        return $aAddress;
                }
 

+
+
+               // returns an array which will contain the keys
+               //   aBoundingBox
+               // and may also contain one or more of the keys
+               //   asgeojson
+               //   askml
+               //   assvg
+               //   astext
+               //   lat
+               //   lon
+               function getOutlines($iPlaceID, $fLon=null, $fLat=null, $fRadius=null)
+               {
+
+                       $aOutlineResult = array();
+                       if (!$iPlaceID) return $aOutlineResult;
+
+                       if (CONST_Search_AreaPolygons)
+                       {
+                               // Get the bounding box and outline polygon
+                               $sSQL  = "select place_id,0 as numfeatures,st_area(geometry) as area,";
+                               $sSQL .= "ST_Y(centroid) as centrelat,ST_X(centroid) as centrelon,";
+                               $sSQL .= "ST_YMin(geometry) as minlat,ST_YMax(geometry) as maxlat,";
+                               $sSQL .= "ST_XMin(geometry) as minlon,ST_XMax(geometry) as maxlon";
+                               if ($this->bIncludePolygonAsGeoJSON) $sSQL .= ",ST_AsGeoJSON(geometry) as asgeojson";
+                               if ($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";
+                               $sFrom = " from placex where place_id = ".$iPlaceID;
+                               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($aPointPolygon))
+                               {
+                                       echo var_dump($aPointPolygon);
+                                       failInternalError("Could not get outline.", $sSQL, $aPointPolygon);
+                               }
+
+                               if ($aPointPolygon['place_id'])
+                               {
+                                       if ($aPointPolygon['centrelon'] !== null && $aPointPolygon['centrelat'] !== null )
+                                       {
+                                               $aOutlineResult['lat'] = $aPointPolygon['centrelat'];
+                                               $aOutlineResult['lon'] = $aPointPolygon['centrelon'];
+                                       }
+
+                                       if ($this->bIncludePolygonAsGeoJSON) $aOutlineResult['asgeojson'] = $aPointPolygon['asgeojson'];
+                                       if ($this->bIncludePolygonAsKML) $aOutlineResult['askml'] = $aPointPolygon['askml'];
+                                       if ($this->bIncludePolygonAsSVG) $aOutlineResult['assvg'] = $aPointPolygon['assvg'];
+                                       if ($this->bIncludePolygonAsText) $aOutlineResult['astext'] = $aPointPolygon['astext'];
+                                       if ($this->bIncludePolygonAsPoints) $aOutlineResult['aPolyPoints'] = geometryText2Points($aPointPolygon['astext'], $fRadius);
+
+
+                                       if (abs($aPointPolygon['minlat'] - $aPointPolygon['maxlat']) < 0.0000001)
+                                       {
+                                               $aPointPolygon['minlat'] = $aPointPolygon['minlat'] - $fRadius;
+                                               $aPointPolygon['maxlat'] = $aPointPolygon['maxlat'] + $fRadius;
+                                       }
+                                       if (abs($aPointPolygon['minlon'] - $aPointPolygon['maxlon']) < 0.0000001)
+                                       {
+                                               $aPointPolygon['minlon'] = $aPointPolygon['minlon'] - $fRadius;
+                                               $aPointPolygon['maxlon'] = $aPointPolygon['maxlon'] + $fRadius;
+                                       }
+
+                                       $aOutlineResult['aBoundingBox'] = array(
+                                                                         (string)$aPointPolygon['minlat'],
+                                                                         (string)$aPointPolygon['maxlat'],
+                                                                         (string)$aPointPolygon['minlon'],
+                                                                         (string)$aPointPolygon['maxlon']
+                                                                        );
+                               }
+                       } // CONST_Search_AreaPolygons
+
+                       // as a fallback we generate a bounding box without knowing the size of the geometry
+                       if ( (!isset($aOutlineResult['aBoundingBox'])) && isset($fLon) )
+                       {
+
+                               if ($this->bIncludePolygonAsPoints)
+                               {
+                                       $sGeometryText = 'POINT('.$fLon.','.$fLat.')';
+                                       $aOutlineResult['aPolyPoints'] = geometryText2Points($sGeometryText, $fRadius);
+                               }
+
+                               $aBounds = array();
+                               $aBounds['minlat'] = $fLat - $fRadius;
+                               $aBounds['maxlat'] = $fLat + $fRadius;
+                               $aBounds['minlon'] = $fLon - $fRadius;
+                               $aBounds['maxlon'] = $fLon + $fRadius;
+
+                               $aOutlineResult['aBoundingBox'] = array(
+                                                                 (string)$aBounds['minlat'],
+                                                                 (string)$aBounds['maxlat'],
+                                                                 (string)$aBounds['minlon'],
+                                                                 (string)$aBounds['maxlon']
+                                                                );
+                       }
+                       return $aOutlineResult;
+               }

        }
 ?>
        }
 ?>