mirror of
https://github.com/osm-search/Nominatim.git
synced 2024-11-27 10:43:02 +03:00
228 lines
6.7 KiB
PHP
228 lines
6.7 KiB
PHP
<?php
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class ReverseGeocode
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{
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protected $oDB;
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protected $fLat;
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protected $fLon;
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protected $iMaxRank = 28;
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protected $aLangPrefOrder = array();
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protected $bIncludePolygonAsPoints = false;
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protected $bIncludePolygonAsText = false;
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protected $bIncludePolygonAsGeoJSON = false;
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protected $bIncludePolygonAsKML = false;
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protected $bIncludePolygonAsSVG = false;
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protected $fPolygonSimplificationThreshold = 0.0;
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function ReverseGeocode(&$oDB)
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{
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$this->oDB =& $oDB;
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}
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function setLanguagePreference($aLangPref)
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{
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$this->aLangPrefOrder = $aLangPref;
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}
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function setLatLon($fLat, $fLon)
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{
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$this->fLat = (float)$fLat;
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$this->fLon = (float)$fLon;
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}
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function setRank($iRank)
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{
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$this->iMaxRank = $iRank;
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}
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function setZoom($iZoom)
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{
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// Zoom to rank, this could probably be calculated but a lookup gives fine control
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$aZoomRank = array(
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0 => 2, // Continent / Sea
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1 => 2,
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2 => 2,
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3 => 4, // Country
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4 => 4,
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5 => 8, // State
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6 => 10, // Region
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7 => 10,
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8 => 12, // County
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9 => 12,
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10 => 17, // City
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11 => 17,
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12 => 18, // Town / Village
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13 => 18,
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14 => 22, // Suburb
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15 => 22,
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16 => 26, // Street, TODO: major street?
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17 => 26,
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18 => 30, // or >, Building
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19 => 30, // or >, Building
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);
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$this->iMaxRank = (isset($iZoom) && isset($aZoomRank[$iZoom]))?$aZoomRank[$iZoom]:28;
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}
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function setIncludePolygonAsPoints($b = true)
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{
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$this->bIncludePolygonAsPoints = $b;
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}
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function getIncludePolygonAsPoints()
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{
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return $this->bIncludePolygonAsPoints;
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}
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function setIncludePolygonAsText($b = true)
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{
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$this->bIncludePolygonAsText = $b;
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}
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function getIncludePolygonAsText()
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{
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return $this->bIncludePolygonAsText;
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}
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function setIncludePolygonAsGeoJSON($b = true)
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{
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$this->bIncludePolygonAsGeoJSON = $b;
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}
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function setIncludePolygonAsKML($b = true)
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{
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$this->bIncludePolygonAsKML = $b;
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}
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function setIncludePolygonAsSVG($b = true)
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{
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$this->bIncludePolygonAsSVG = $b;
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}
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function setPolygonSimplificationThreshold($f)
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{
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$this->fPolygonSimplificationThreshold = $f;
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}
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// returns { place_id =>, type => '(osm|tiger)' }
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// fails if no place was found
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function lookup()
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{
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$sPointSQL = 'ST_SetSRID(ST_Point('.$this->fLon.','.$this->fLat.'),4326)';
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$iMaxRank = $this->iMaxRank;
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$iMaxRank_orig = $this->iMaxRank;
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// Find the nearest point
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$fSearchDiam = 0.0004;
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$iPlaceID = null;
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$aArea = false;
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$fMaxAreaDistance = 1;
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$bIsInUnitedStates = false;
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$bPlaceIsTiger = false;
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while(!$iPlaceID && $fSearchDiam < $fMaxAreaDistance)
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{
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$fSearchDiam = $fSearchDiam * 2;
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// If we have to expand the search area by a large amount then we need a larger feature
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// then there is a limit to how small the feature should be
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if ($fSearchDiam > 2 && $iMaxRank > 4) $iMaxRank = 4;
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if ($fSearchDiam > 1 && $iMaxRank > 9) $iMaxRank = 8;
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if ($fSearchDiam > 0.8 && $iMaxRank > 10) $iMaxRank = 10;
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if ($fSearchDiam > 0.6 && $iMaxRank > 12) $iMaxRank = 12;
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if ($fSearchDiam > 0.2 && $iMaxRank > 17) $iMaxRank = 17;
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if ($fSearchDiam > 0.1 && $iMaxRank > 18) $iMaxRank = 18;
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if ($fSearchDiam > 0.008 && $iMaxRank > 22) $iMaxRank = 22;
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if ($fSearchDiam > 0.001 && $iMaxRank > 26) $iMaxRank = 26;
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$sSQL = 'select place_id,parent_place_id,rank_search,calculated_country_code';
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$sSQL .= ' FROM placex';
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$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
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$sSQL .= ' and rank_search != 28 and rank_search >= '.$iMaxRank;
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$sSQL .= ' and (name is not null or housenumber is not null)';
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$sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')';
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$sSQL .= ' and indexed_status = 0 ';
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$sSQL .= ' and (ST_GeometryType(geometry) not in (\'ST_Polygon\',\'ST_MultiPolygon\') ';
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$sSQL .= ' OR ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.'))';
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$sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', geometry) ASC limit 1';
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if (CONST_Debug) var_dump($sSQL);
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$aPlace = $this->oDB->getRow($sSQL);
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if (PEAR::IsError($aPlace))
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{
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failInternalError("Could not determine closest place.", $sSQL, $aPlace);
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}
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$iPlaceID = $aPlace['place_id'];
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$iParentPlaceID = $aPlace['parent_place_id'];
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$bIsInUnitedStates = ($aPlace['calculated_country_code'] == 'us');
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}
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// Only street found? If it's in the US we can check TIGER data for nearest housenumber
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if ($bIsInUnitedStates && $iMaxRank_orig >= 28 && $iPlaceID && ($aPlace['rank_search'] == 26 || $aPlace['rank_search'] == 27 ))
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{
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$fSearchDiam = 0.001;
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$sSQL = 'SELECT place_id,parent_place_id,30 as rank_search ';
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if (CONST_Debug) { $sSQL .= ', housenumber, ST_distance('.$sPointSQL.', centroid) as distance, st_y(centroid) as lat, st_x(centroid) as lon'; }
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$sSQL .= ' FROM location_property_tiger WHERE parent_place_id = '.$iPlaceID;
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$sSQL .= ' AND ST_DWithin('.$sPointSQL.', centroid, '.$fSearchDiam.')';
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$sSQL .= ' ORDER BY ST_distance('.$sPointSQL.', centroid) ASC limit 1';
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// print all house numbers in the parent (street)
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if (CONST_Debug)
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{
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$sSQL = preg_replace('/limit 1/', 'limit 100', $sSQL);
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var_dump($sSQL);
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$aAllHouses = $this->oDB->getAll($sSQL);
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foreach($aAllHouses as $i)
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{
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echo $i['housenumber'] . ' | ' . $i['distance'] * 1000 . ' | ' . $i['lat'] . ' | ' . $i['lon']. ' | '. "<br>\n";
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}
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}
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$aPlaceTiger = $this->oDB->getRow($sSQL);
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if (PEAR::IsError($aPlace))
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{
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failInternalError("Could not determine closest Tiger place.", $sSQL, $aPlaceTiger);
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}
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if ($aPlaceTiger)
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{
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if (CONST_Debug) var_dump('found Tiger place', $aPlaceTiger);
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$bPlaceIsTiger = true;
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$aPlace = $aPlaceTiger;
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$iPlaceID = $aPlaceTiger['place_id'];
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$iParentPlaceID = $aPlaceTiger['parent_place_id']; // the street
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}
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}
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// The point we found might be too small - use the address to find what it is a child of
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if ($iPlaceID && $iMaxRank < 28)
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{
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if ($aPlace['rank_search'] > 28 && $iParentPlaceID && !$bPlaceIsTiger)
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{
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$iPlaceID = $iParentPlaceID;
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}
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$sSQL = 'select address_place_id';
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$sSQL .= ' FROM place_addressline';
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$sSQL .= " WHERE place_id = $iPlaceID";
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$sSQL .= " ORDER BY abs(cached_rank_address - $iMaxRank) asc,cached_rank_address desc,isaddress desc,distance desc";
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$sSQL .= ' LIMIT 1';
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$iPlaceID = $this->oDB->getOne($sSQL);
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if (PEAR::IsError($iPlaceID))
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{
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failInternalError("Could not get parent for place.", $sSQL, $iPlaceID);
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}
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if (!$iPlaceID)
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{
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$iPlaceID = $aPlace['place_id'];
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}
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}
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return array('place_id' => $iPlaceID,
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'type' => $bPlaceIsTiger ? 'tiger' : 'osm');
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}
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}
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?>
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