- // 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";
- $sFrom = " from placex where place_id = ".$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))
- {
- failInternalError("Could not get outline.", $sSQL, $aPointPolygon);
- }
-
- if ($aPointPolygon['place_id'])
- {
- if ($this->bIncludePolygonAsGeoJSON) $aResult['asgeojson'] = $aPointPolygon['asgeojson'];
- if ($this->bIncludePolygonAsKML) $aResult['askml'] = $aPointPolygon['askml'];
- if ($this->bIncludePolygonAsSVG) $aResult['assvg'] = $aPointPolygon['assvg'];
- if ($this->bIncludePolygonAsText) $aResult['astext'] = $aPointPolygon['astext'];
-
- if ($aPointPolygon['centrelon'] !== null && $aPointPolygon['centrelat'] !== null )
- {
- $aResult['lat'] = $aPointPolygon['centrelat'];
- $aResult['lon'] = $aPointPolygon['centrelon'];
- }
-
- if ($this->bIncludePolygonAsPoints)
- {
- // Translate geometry string to point array
- if (preg_match('#POLYGON\\(\\(([- 0-9.,]+)#',$aPointPolygon['astext'],$aMatch))
- {
- preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/',$aMatch[1],$aPolyPoints,PREG_SET_ORDER);
- }
- elseif (preg_match('#MULTIPOLYGON\\(\\(\\(([- 0-9.,]+)#',$aPointPolygon['astext'],$aMatch))
- {
- preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/',$aMatch[1],$aPolyPoints,PREG_SET_ORDER);
- }
- elseif (preg_match('#POINT\\((-?[0-9.]+) (-?[0-9.]+)\\)#',$aPointPolygon['astext'],$aMatch))
- {
- $fRadius = 0.01;
- $iSteps = ($fRadius * 40000)^2;
- $fStepSize = (2*pi())/$iSteps;
- $aPolyPoints = array();
- for($f = 0; $f < 2*pi(); $f += $fStepSize)
- {
- $aPolyPoints[] = array('',$aMatch[1]+($fRadius*sin($f)),$aMatch[2]+($fRadius*cos($f)));
- }
- $aPointPolygon['minlat'] = $aPointPolygon['minlat'] - $fRadius;
- $aPointPolygon['maxlat'] = $aPointPolygon['maxlat'] + $fRadius;
- $aPointPolygon['minlon'] = $aPointPolygon['minlon'] - $fRadius;
- $aPointPolygon['maxlon'] = $aPointPolygon['maxlon'] + $fRadius;
- }
- }
-
- // Output data suitable for display (points and a bounding box)
- if ($this->bIncludePolygonAsPoints && isset($aPolyPoints))
- {
- $aResult['aPolyPoints'] = array();
- foreach($aPolyPoints as $aPoint)
- {
- $aResult['aPolyPoints'][] = array($aPoint[1], $aPoint[2]);
- }
- }
- $aResult['aBoundingBox'] = array($aPointPolygon['minlat'],$aPointPolygon['maxlat'],$aPointPolygon['minlon'],$aPointPolygon['maxlon']);
- }
projects / nominatim.git / blobdiff