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using ST_ClosestPoint and a subquery

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gemo1011
2018-06-13 13:22:37 +02:00
parent 796f069d74
commit 398467b2f4
1 changed files with 17 additions and 18 deletions
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9
lib/PlaceLookup.php
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@@ -539,13 +539,11 @@ class PlaceLookup
$sSQL = 'select place_id,0 as numfeatures,st_area(geometry) as area,'; $sSQL = 'select place_id,0 as numfeatures,st_area(geometry) as area,';
if ($fLonReverse != null && $fLatReverse != null) { if ($fLonReverse != null && $fLatReverse != null) {
$sSQL .= ' CASE WHEN (class = \'highway\') AND (ST_GeometryType(geometry) = \'ST_LineString\') THEN'; $sSQL .= ' CASE WHEN (class = \'highway\') AND (ST_GeometryType(geometry) = \'ST_LineString\') THEN';
$sSQL .= ' ST_Y(ST_LineInterpolatePoint(geometry,'; $sSQL .= ' ST_Y(closest_point)';
$sSQL .= ' ST_LineLocatePoint(geometry, ST_SetSRID(ST_Point('.$fLatReverse.','.$fLonReverse.'),4326))))';
$sSQL .= ' ELSE ST_Y(centroid) '; $sSQL .= ' ELSE ST_Y(centroid) ';
$sSQL .= ' END as centrelat, '; $sSQL .= ' END as centrelat, ';
$sSQL .= ' CASE WHEN (class = \'highway\') AND (ST_GeometryType(geometry) = \'ST_LineString\') THEN'; $sSQL .= ' CASE WHEN (class = \'highway\') AND (ST_GeometryType(geometry) = \'ST_LineString\') THEN';
$sSQL .= ' ST_X(ST_LineInterpolatePoint(geometry,'; $sSQL .= ' ST_X(closest_point)';
$sSQL .= ' ST_LineLocatePoint(geometry, ST_SetSRID(ST_Point('.$fLatReverse.','.$fLonReverse.'),4326))))';
$sSQL .= ' ELSE ST_X(centroid) '; $sSQL .= ' ELSE ST_X(centroid) ';
$sSQL .= ' END as centrelon, '; $sSQL .= ' END as centrelon, ';
} else { } else {
@@ -557,7 +555,8 @@ class PlaceLookup
if ($this->bIncludePolygonAsKML) $sSQL .= ',ST_AsKML(geometry) as askml'; if ($this->bIncludePolygonAsKML) $sSQL .= ',ST_AsKML(geometry) as askml';
if ($this->bIncludePolygonAsSVG) $sSQL .= ',ST_AsSVG(geometry) as assvg'; if ($this->bIncludePolygonAsSVG) $sSQL .= ',ST_AsSVG(geometry) as assvg';
if ($this->bIncludePolygonAsText || $this->bIncludePolygonAsPoints) $sSQL .= ',ST_AsText(geometry) as astext'; if ($this->bIncludePolygonAsText || $this->bIncludePolygonAsPoints) $sSQL .= ',ST_AsText(geometry) as astext';
$sFrom = ' from placex where place_id = '.$iPlaceID; $sFrom = ' from (SELECT * , ST_ClosestPoint(geometry, ST_SetSRID(ST_Point('.$fLatReverse.','.$fLonReverse.'),4326)) AS closest_point';
$sFrom .= ' from placex where place_id = '.$iPlaceID.') as plx';
if ($this->fPolygonSimplificationThreshold > 0) { if ($this->fPolygonSimplificationThreshold > 0) {
$sSQL .= ' from (select place_id,centroid,ST_SimplifyPreserveTopology(geometry,'.$this->fPolygonSimplificationThreshold.') as geometry'.$sFrom.') as plx'; $sSQL .= ' from (select place_id,centroid,ST_SimplifyPreserveTopology(geometry,'.$this->fPolygonSimplificationThreshold.') as geometry'.$sFrom.') as plx';
} else { } else {