/**
* Returns the geographical distance between two coordinates.
* See http://en.wikipedia.org/wiki/Geographical_distance
*
* @since 2.0
*
* @param LatLongValue $start
* @param LatLongValue $end
*
* @return float Distance in m.
*/
public static function calculateDistance(LatLongValue $start, LatLongValue $end)
{
$northRad1 = deg2rad($start->getLatitude());
$eastRad1 = deg2rad($start->getLongitude());
$cosNorth1 = cos($northRad1);
$cosEast1 = cos($eastRad1);
$sinNorth1 = sin($northRad1);
$sinEast1 = sin($eastRad1);
$northRad2 = deg2rad($end->getLatitude());
$eastRad2 = deg2rad($end->getLongitude());
$cosNorth2 = cos($northRad2);
$cosEast2 = cos($eastRad2);
$sinNorth2 = sin($northRad2);
$sinEast2 = sin($eastRad2);
$term1 = $cosNorth1 * $sinEast1 - $cosNorth2 * $sinEast2;
$term2 = $cosNorth1 * $cosEast1 - $cosNorth2 * $cosEast2;
$term3 = $sinNorth1 - $sinNorth2;
$distThruSquared = $term1 * $term1 + $term2 * $term2 + $term3 * $term3;
$distance = 2 * Maps_EARTH_RADIUS * asin(sqrt($distThruSquared) / 2);
assert($distance >= 0);
return $distance;
}
/**
* Returns an object that can directly be converted to JS using json_encode or similar.
*
* FIXME: complexity
*
* @since 1.0
*
* @param string $defText
* @param string $defTitle
* @param string $defIconUrl
* @param string $defGroup
* @param string $defInlineLabel
* @param string $defVisitedIcon
*
* @return array
*/
public function getJSONObject($defText = '', $defTitle = '', $defIconUrl = '', $defGroup = '', $defInlineLabel = '', $defVisitedIcon = '')
{
$parentArray = parent::getJSONObject($defText, $defTitle);
$array = array('lat' => $this->coordinates->getLatitude(), 'lon' => $this->coordinates->getLongitude(), 'alt' => 0, 'address' => $this->getAddress(false), 'icon' => $this->hasIcon() ? \MapsMapper::getFileUrl($this->getIcon()) : $defIconUrl, 'group' => $this->hasGroup() ? $this->getGroup() : $defGroup, 'inlineLabel' => $this->hasInlineLabel() ? $this->getInlineLabel() : $defInlineLabel, 'visitedicon' => $this->hasVisitedIcon() ? $this->getVisitedIcon() : $defVisitedIcon);
return array_merge($parentArray, $array);
}