mirror of
https://github.com/osm-search/Nominatim.git
synced 2024-11-30 12:22:10 +03:00
291 lines
12 KiB
PHP
291 lines
12 KiB
PHP
<?php
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namespace Nominatim;
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require_once(CONST_BasePath.'/lib/Result.php');
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class ReverseGeocode
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{
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protected $oDB;
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protected $iMaxRank = 28;
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public function __construct(&$oDB)
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{
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$this->oDB =& $oDB;
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}
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public function setZoom($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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/**
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* Find the closest interpolation with the given search diameter.
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*
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* @param string $sPointSQL Reverse geocoding point as SQL
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* @param float $fSearchDiam Search diameter
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*
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* @return Record of the interpolation or null.
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*/
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protected function lookupInterpolation($sPointSQL, $fSearchDiam)
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{
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$sSQL = 'SELECT place_id, parent_place_id, 30 as rank_search,';
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$sSQL .= ' ST_LineLocatePoint(linegeo,'.$sPointSQL.') as fraction,';
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$sSQL .= ' startnumber, endnumber, interpolationtype,';
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$sSQL .= ' ST_Distance(linegeo,'.$sPointSQL.') as distance';
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$sSQL .= ' FROM location_property_osmline';
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$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', linegeo, '.$fSearchDiam.')';
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$sSQL .= ' and indexed_status = 0 and startnumber is not NULL ';
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$sSQL .= ' ORDER BY distance ASC limit 1';
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return chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine closest housenumber on an osm interpolation line.'
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);
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}
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protected function noPolygonFound($sPointSQL, $iMaxRank)
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{
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$sSQL = 'SELECT * FROM country_osm_grid';
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$sSQL .= ' WHERE ST_CONTAINS (geometry, '.$sPointSQL.' )';
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$aPoly = chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine polygon containing the point.'
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);
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if ($aPoly) {
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$sCountryCode = $aPoly['country_code'];
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$sSQL = 'SELECT *, ST_distance('.$sPointSQL.', geometry) as distance';
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$sSQL .= ' FROM placex';
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$sSQL .= ' WHERE osm_type = \'N\'';
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$sSQL .= ' AND country_code = \''.$sCountryCode.'\'';
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$sSQL .= ' AND rank_address > 0';
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$sSQL .= ' AND rank_address <= ' .Min(25, $iMaxRank);
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$sSQL .= ' AND type != \'postcode\'';
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$sSQL .= ' AND name IS NOT NULL ';
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$sSQL .= ' and indexed_status = 0 and linked_place_id is null';
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$sSQL .= ' ORDER BY distance ASC, rank_address DESC';
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$sSQL .= ' LIMIT 1';
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if (CONST_Debug) var_dump($sSQL);
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$aPlacNode = chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine place node.'
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);
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if ($aPlacNode) {
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return $aPlacNode;
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}
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}
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}
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protected function lookupPolygon($sPointSQL, $iMaxRank)
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{
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$oResult = null;
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$aPlace = null;
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$sSQL = 'SELECT * FROM';
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$sSQL .= '(select place_id,parent_place_id,rank_address,country_code, geometry';
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$sSQL .= ' FROM placex';
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$sSQL .= ' WHERE ST_GeometryType(geometry) in (\'ST_Polygon\', \'ST_MultiPolygon\')';
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$sSQL .= ' AND rank_address <= ' .Min(25, $iMaxRank);
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$sSQL .= ' AND geometry && '.$sPointSQL;
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$sSQL .= ' AND type != \'postcode\' ';
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$sSQL .= ' AND name is not null';
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$sSQL .= ' AND indexed_status = 0 and linked_place_id is null';
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$sSQL .= ' ORDER BY rank_address DESC LIMIT 50 ) as a';
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$sSQL .= ' WHERE ST_CONTAINS(geometry, '.$sPointSQL.' )';
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$sSQL .= ' ORDER BY rank_address DESC LIMIT 1';
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$aPoly = chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine polygon containing the point.'
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);
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if ($aPoly) {
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$iParentPlaceID = $aPoly['parent_place_id'];
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$iRankAddress = $aPoly['rank_address'];
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$iPlaceID = $aPoly['place_id'];
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if ($iRankAddress != $iMaxRank) {
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$sSQL = 'SELECT *';
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$sSQL .= ' FROM (';
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$sSQL .= ' SELECT place_id, rank_address,country_code, geometry,';
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$sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance';
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$sSQL .= ' FROM placex';
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$sSQL .= ' WHERE osm_type = \'N\'';
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$sSQL .= ' AND rank_address > '.$iRankAddress;
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$sSQL .= ' AND rank_address <= ' .Min(25, $iMaxRank);
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$sSQL .= ' AND type != \'postcode\'';
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$sSQL .= ' AND name IS NOT NULL ';
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$sSQL .= ' and indexed_status = 0 and linked_place_id is null';
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// preselection through bbox
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$sSQL .= ' AND (SELECT geometry FROM placex WHERE place_id = '.$iPlaceID.') && geometry';
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$sSQL .= ' ORDER BY distance ASC,';
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$sSQL .= ' rank_address DESC';
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$sSQL .= ' limit 500) as a';
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$sSQL .= ' WHERE ST_CONTAINS((SELECT geometry FROM placex WHERE place_id = '.$iPlaceID.'), geometry )';
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$sSQL .= ' ORDER BY distance ASC, rank_address DESC';
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$sSQL .= ' LIMIT 1';
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if (CONST_Debug) var_dump($sSQL);
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$aPlacNode = chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine place node.'
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);
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if ($aPlacNode) {
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return $aPlacNode;
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}
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}
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}
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return $aPoly;
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}
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public function lookup($fLat, $fLon, $bDoInterpolation = true)
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{
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return $this->lookupPoint(
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'ST_SetSRID(ST_Point('.$fLon.','.$fLat.'),4326)',
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$bDoInterpolation
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);
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}
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public function lookupPoint($sPointSQL, $bDoInterpolation = true)
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{
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$iMaxRank = $this->iMaxRank;
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// Find the nearest point
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$fSearchDiam = 0.006;
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$oResult = null;
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$aPlace = null;
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$fMaxAreaDistance = 1;
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$bIsTigerStreet = false;
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// try with interpolations before continuing
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if ($bDoInterpolation && $iMaxRank >= 30) {
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$aHouse = $this->lookupInterpolation($sPointSQL, $fSearchDiam/3);
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if ($aHouse) {
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$oResult = new Result($aHouse['place_id'], Result::TABLE_OSMLINE);
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$oResult->iHouseNumber = closestHouseNumber($aHouse);
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$aPlace = $aHouse;
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$iParentPlaceID = $aHouse['parent_place_id']; // the street
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$iMaxRank = 30;
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return $oResult;
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}
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}// no interpolation found, continue search
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// for POI or street level
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if ($iMaxRank >= 26) {
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$sSQL = 'select place_id,parent_place_id,rank_address,country_code,';
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$sSQL .= 'CASE WHEN ST_GeometryType(geometry) in (\'ST_Polygon\',\'ST_MultiPolygon\') THEN ST_distance('.$sPointSQL.', centroid)';
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$sSQL .= ' ELSE ST_distance('.$sPointSQL.', geometry) ';
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$sSQL .= ' END as distance';
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$sSQL .= ' FROM ';
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$sSQL .= ' placex';
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$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, '.$fSearchDiam.')';
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$sSQL .= ' AND';
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// only streets
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if ($iMaxRank == 26) {
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$sSQL .= ' rank_address = 26';
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} else {
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$sSQL .= ' rank_address >= 26';
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}
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$sSQL .= ' and (name is not null or housenumber is not null';
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$sSQL .= ' or rank_address between 26 and 27)';
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$sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')';
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$sSQL .= ' and indexed_status = 0 and linked_place_id is null';
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$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 distance ASC limit 1';
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if (CONST_Debug) var_dump($sSQL);
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$aPlace = chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine closest place.'
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);
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if ($aPlace) {
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$iPlaceID = $aPlace['place_id'];
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$oResult = new Result($iPlaceID);
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$iParentPlaceID = $aPlace['parent_place_id'];
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// if street and maxrank > streetlevel
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if (($aPlace['rank_address'] == 26 || $aPlace['rank_address'] == 27)&& $iMaxRank > 27) {
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// find the closest object (up to a certain radius) of which the street is a parent of
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$sSQL = ' select place_id,parent_place_id,rank_address,country_code,';
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$sSQL .= ' ST_distance('.$sPointSQL.', geometry) as distance';
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$sSQL .= ' FROM ';
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$sSQL .= ' placex';
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// radius ?
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$sSQL .= ' WHERE ST_DWithin('.$sPointSQL.', geometry, 0.001)';
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$sSQL .= ' AND parent_place_id = '.$iPlaceID;
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$sSQL .= ' and rank_address != 28';
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$sSQL .= ' and (name is not null or housenumber is not null';
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$sSQL .= ' or rank_address between 26 and 27)';
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$sSQL .= ' and class not in (\'waterway\',\'railway\',\'tunnel\',\'bridge\',\'man_made\')';
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$sSQL .= ' and indexed_status = 0 and linked_place_id is null';
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$sSQL .= ' ORDER BY distance ASC limit 1';
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if (CONST_Debug) var_dump($sSQL);
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$aStreet = chksql(
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$this->oDB->getRow($sSQL),
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'Could not determine closest place.'
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);
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if ($aStreet) {
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$iPlaceID = $aStreet['place_id'];
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$oResult = new Result($iPlaceID);
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$iParentPlaceID = $aStreet['parent_place_id'];
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}
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}
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} else {
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$aPlace = $this->lookupPolygon($sPointSQL, $iMaxRank);
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if ($aPlace) {
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$oResult = new Result($aPlace['place_id']);
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} else {
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$aPlace = $this->noPolygonFound($sPointSQL, $iMaxRank);
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if ($aPlace) {
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$oResult = new Result($aPlace['place_id']);
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}
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}
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}
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// lower than street level ($iMaxRank < 26 )
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} else {
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$aPlace = $this->lookupPolygon($sPointSQL, $iMaxRank);
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if ($aPlace) {
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$oResult = new Result($aPlace['place_id']);
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} else {
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$aPlace = $this->noPolygonFound($sPointSQL, $iMaxRank);
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if ($aPlace) {
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$oResult = new Result($aPlace['place_id']);
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}
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}
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}
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return $oResult;
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}
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}
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