+
+ // returns boolean
+ function validLatLon($fLat,$fLon)
+ {
+ return ($fLat <= 90.1 && $fLat >= -90.1 && $fLon <= 180.1 && $fLon >= -180.1);
+ }
+
+ // Do we have anything that looks like a lat/lon pair?
+ // returns array(lat,lon,query_with_lat_lon_removed)
+ // or null
+ function looksLikeLatLonPair($sQuery)
+ {
+ $sFound = null;
+ $fQueryLat = null;
+ $fQueryLon = null;
+
+ // degrees decimal minutes
+ // N 40 26.767, W 79 58.933
+ // N 40°26.767′, W 79°58.933′
+ // 1 2 3 4 5 6
+ if (preg_match('/\\b([NS])[ ]+([0-9]+[0-9.]*)[° ]+([0-9.]+)?[′\']*[, ]+([EW])[ ]+([0-9]+)[° ]+([0-9]+[0-9.]*)[′\']*?\\b/', $sQuery, $aData))
+ {
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2] + $aData[3]/60);
+ $fQueryLon = ($aData[4]=='E'?1:-1) * ($aData[5] + $aData[6]/60);
+ }
+ // degrees decimal minutes
+ // 40 26.767 N, 79 58.933 W
+ // 40° 26.767′ N 79° 58.933′ W
+ // 1 2 3 4 5 6
+ elseif (preg_match('/\\b([0-9]+)[° ]+([0-9]+[0-9.]*)?[′\']*[ ]+([NS])[, ]+([0-9]+)[° ]+([0-9]+[0-9.]*)?[′\' ]+([EW])\\b/', $sQuery, $aData))
+ {
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[3]=='N'?1:-1) * ($aData[1] + $aData[2]/60);
+ $fQueryLon = ($aData[6]=='E'?1:-1) * ($aData[4] + $aData[5]/60);
+ }
+ // degrees decimal seconds
+ // N 40 26 46 W 79 58 56
+ // N 40° 26′ 46″, W 79° 58′ 56″
+ // 1 2 3 4 5 6 7 8
+ elseif (preg_match('/\\b([NS])[ ]([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+)[″"]*[, ]+([EW])[ ]([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+)[″"]*\\b/', $sQuery, $aData))
+ {
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2] + $aData[3]/60 + $aData[4]/3600);
+ $fQueryLon = ($aData[5]=='E'?1:-1) * ($aData[6] + $aData[7]/60 + $aData[8]/3600);
+ }
+ // degrees decimal seconds
+ // 40 26 46 N 79 58 56 W
+ // 40° 26′ 46″ N, 79° 58′ 56″ W
+ // 1 2 3 4 5 6 7 8
+ elseif (preg_match('/\\b([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+)[″" ]+([NS])[, ]+([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+)[″" ]+([EW])\\b/', $sQuery, $aData))
+ {
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[4]=='N'?1:-1) * ($aData[1] + $aData[2]/60 + $aData[3]/3600);
+ $fQueryLon = ($aData[8]=='E'?1:-1) * ($aData[5] + $aData[6]/60 + $aData[7]/3600);
+ }
+ // degrees decimal
+ // N 40.446° W 79.982°
+ // 1 2 3 4
+ elseif (preg_match('/\\b([NS])[ ]([0-9]+[0-9]*\\.[0-9]+)[°]*[, ]+([EW])[ ]([0-9]+[0-9]*\\.[0-9]+)[°]*\\b/', $sQuery, $aData))
+ {
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2]);
+ $fQueryLon = ($aData[3]=='E'?1:-1) * ($aData[4]);
+ }
+ // degrees decimal
+ // 40.446° N 79.982° W
+ // 1 2 3 4
+ elseif (preg_match('/\\b([0-9]+[0-9]*\\.[0-9]+)[° ]+([NS])[, ]+([0-9]+[0-9]*\\.[0-9]+)[° ]+([EW])\\b/', $sQuery, $aData))
+ {
+ $sFound = $aData[0];
+ $fQueryLat = ($aData[2]=='N'?1:-1) * ($aData[1]);
+ $fQueryLon = ($aData[4]=='E'?1:-1) * ($aData[3]);
+ }
+ // degrees decimal
+ // 12.34, 56.78
+ // [12.456,-78.90]
+ // 1 2 3 4
+ elseif (preg_match('/(\\[|^|\\b)(-?[0-9]+[0-9]*\\.[0-9]+)[, ]+(-?[0-9]+[0-9]*\\.[0-9]+)(\\]|$|\\b)/', $sQuery, $aData))
+ {
+ $sFound = $aData[0];
+ $fQueryLat = $aData[2];
+ $fQueryLon = $aData[3];
+ }
+
+ if (!validLatLon($fQueryLat, $fQueryLon)) return;
+ $sQuery = trim(str_replace($sFound, ' ', $sQuery));
+
+ 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;
+ }
projects / nominatim.git / blobdiff