if ($exif['GPS']['GPSLatitudeRef'] == 'S') {
$lat *= -1;
}
if (is_array($exif['GPS']['GPSLongitude'])) {
$deg = FractionToDecimal($exif['GPS']['GPSLongitude'][0]);
$min = FractionToDecimal($exif['GPS']['GPSLongitude'][1]);
$sec = FractionToDecimal($exif['GPS']['GPSLongitude'][2]);
$long = ExifConvertDegMinSecToDD($deg, $min, $sec);
} else {
//not sure if this will ever happen but it could?
$long = $exif['GPS']['GPSLongitude'];
}
if ($exif['GPS']['GPSLongitudeRef'] == 'W') {
$long *= -1;
}
list($e, $n, $reference_index) = $conv->wgs84_to_national($lat, $long);
list($_POST['photographer_gridref'], $len) = $conv->national_to_gridref(intval($e), intval($n), 0, $reference_index);
if (isset($exif['GPS']['GPSDestLatitude'])) {
if (is_array($exif['GPS']['GPSDestLatitude'])) {
$deg = FractionToDecimal($exif['GPS']['GPSDestLatitude'][0]);
$min = FractionToDecimal($exif['GPS']['GPSDestLatitude'][1]);
$sec = FractionToDecimal($exif['GPS']['GPSDestLatitude'][2]);
$lat = ExifConvertDegMinSecToDD($deg, $min, $sec);
} else {
//not sure if this will ever happen but it could?
$lat = $exif['GPS']['GPSDestLatitude'];
}
if ($exif['GPS']['GPSDestLatitudeRef'] == 'S') {
$lat *= -1;
}
if (is_array($exif['GPS']['GPSDestLongitude'])) {
/**
*
*/
function setByFullGridRef($gridreference, $setnatfor4fig = false, $allowzeropercent = false, $recalc = false)
{
global $CONF, $MESSAGES;
$matches = array();
$isfour = false;
if (preg_match("/\\b([a-zA-Z]{1,3}) ?(\\d{1,5})[ \\.](\\d{1,5})\\b/", $gridreference, $matches) and strlen($matches[2]) == strlen($matches[3])) {
list($prefix, $e, $n) = array($matches[1], $matches[2], $matches[3]);
$length = strlen($matches[2]);
$natgrlen = $length * 2;
} elseif (preg_match("/\\b([a-zA-Z]{1,3}) ?(\\d{0,10})\\b/", $gridreference, $matches) and strlen($matches[2]) % 2 == 0) {
$natgrlen = strlen($matches[2]);
$length = $natgrlen / 2;
list($prefix, $e, $n) = array($matches[1], substr($matches[2], 0, $length), substr($matches[2], -$length));
}
if (!empty($prefix)) {
$gridref = sprintf("%s%02d%02d", strtoupper($prefix), intval($e / 1000), intval($n / 1000));
$ok = false;
if ($recalc) {
$db =& $this->_getDB();
$prefix = strtoupper($prefix);
$sql = "select * from gridprefix where prefix='{$prefix}' limit 1";
$row = $db->GetRow($sql);
if (count($row)) {
require_once 'geograph/conversions.class.php';
$conv = new Conversions();
$ri = $row['reference_index'];
$fe = intval($e) + ($row['origin_x'] - $CONF['origins'][$ri][0]) * 1000;
$fn = intval($n) + ($row['origin_y'] - $CONF['origins'][$ri][1]) * 1000;
$latlong = $conv->national_to_wgs84($fe, $fn, $ri);
if (count($latlong)) {
$enr = $conv->wgs84_to_national($latlong[0], $latlong[1]);
if (count($enr)) {
$ri2 = $enr[2];
$fe2 = $enr[0];
$fn2 = $enr[1];
if ($ri2 != $ri) {
// we got a new ri
if ($length == 1) {
$shift = 5000;
} elseif ($length == 0) {
$shift = 50000;
} else {
$shift = 0;
}
$e2 = round($enr[0], $length - 5) + $shift;
$n2 = round($enr[1], $length - 5) + $shift;
$x = floor($e2 / 1000) + $CONF['origins'][$ri2][0];
$y = floor($n2 / 1000) + $CONF['origins'][$ri2][1];
$ok = $this->loadFromPosition($x, $y);
if ($ok) {
$prefix = $this->gridsquare;
$e = sprintf("%05d", $e2 % 100000);
$n = sprintf("%05d", $n2 % 100000);
$gridref = $this->grid_reference;
}
}
}
}
}
}
if (!$ok) {
$ok = $this->_setGridRef($gridref, $allowzeropercent);
}
if ($ok && (!$isfour || $setnatfor4fig)) {
//we could be reassigning the square!
unset($this->nateastings);
//use this function to work out the major easting/northing then convert to our exact values
$eastings = $this->getNatEastings();
$northings = $this->getNatNorthings();
$emajor = floor($eastings / 100000);
$nmajor = floor($northings / 100000);
$this->nateastings = $emajor . sprintf("%05d", $e);
$this->natnorthings = $nmajor . sprintf("%05d", $n);
$this->natgrlen = $natgrlen;
$this->precision = pow(10, 6 - $natgrlen / 2) / 10;
} else {
$this->precision = 1000;
}
} else {
$ok = false;
$this->_error(sprintf($MESSAGES['class_gridsquare']['gridref_invalid'], htmlentities($gridreference)));
}
return $ok;
}
