protected function calcCentroid($boundary, $system = '4326')
{
$row = $this->db->query("SELECT ST_AsText(ST_Centroid(ST_GeomFromText('{$boundary}', " . kohana::config('sref_notations.internal_srid') . "))) AS wkt")->current();
$result = array('wkt' => $row->wkt, 'sref' => spatial_ref::internal_wkt_to_sref($row->wkt, intval($system)), 'sref_system' => $system);
return $result;
}
/**
* Allow a service request to triangulate between 2 systems. GET parameters are:
* from_sref
* from_system
* to_system
* to_precision (optional)
*/
public function convert_sref()
{
try {
$wkt = spatial_ref::sref_to_internal_wkt($_GET['from_sref'], $_GET['from_system']);
if (array_key_exists('precision', $_GET)) {
$precision = $_GET['precision'];
} else {
$precision = null;
}
if (array_key_exists('metresAccuracy', $_GET)) {
$metresAccuracy = $_GET['metresAccuracy'];
} else {
$metresAccuracy = null;
}
echo spatial_ref::internal_wkt_to_sref($wkt, $_GET['to_system'], $precision, null, $metresAccuracy);
} catch (Exception $e) {
$this->handle_error($e);
}
}
