/**
* Given an object or a string, return a Geometry
*
* @param mixed $input The GeoJSON string or object
*
* @return object Geometry
*/
public function read($input)
{
if (is_string($input)) {
$input = json_decode($input);
}
if (!is_object($input)) {
throw new FOX_exception(array('numeric' => 1, 'text' => "Invalid input parameter. Must be an object.", 'data' => $input, 'file' => __FILE__, 'class' => __CLASS__, 'function' => __FUNCTION__, 'line' => __LINE__, 'child' => null));
}
if (!is_string($input->type)) {
throw new FOX_exception(array('numeric' => 2, 'text' => "Invalid input parameter 'type' specifier. Must be a string.", 'data' => $input, 'file' => __FILE__, 'class' => __CLASS__, 'function' => __FUNCTION__, 'line' => __LINE__, 'child' => null));
}
// Check to see if it's a FeatureCollection
if ($input->type == 'FeatureCollection') {
$geoms = array();
foreach ($input->features as $feature) {
$geoms[] = $this->read($feature);
}
return FOX_geo::geometryReduce($geoms);
}
// Check to see if it's a Feature
if ($input->type == 'Feature') {
return $this->read($input->geometry);
}
// It's a geometry - process it
return $this->objToGeom($input);
}
public function geomFromXML()
{
$geometries = array();
$geometries = array_merge($geometries, $this->parseWaypoints());
$geometries = array_merge($geometries, $this->parseTracks());
$geometries = array_merge($geometries, $this->parseRoutes());
if (empty($geometries)) {
throw new FOX_exception(array('numeric' => 1, 'text' => "Invalid GPX data string", 'data' => $geometries, 'file' => __FILE__, 'class' => __CLASS__, 'function' => __FUNCTION__, 'line' => __LINE__, 'child' => null));
}
return FOX_geo::geometryReduce($geometries);
}
public function geomFromXML()
{
$geometries = array();
$geometries = array_merge($geometries, $this->parsePoints());
$geometries = array_merge($geometries, $this->parseLines());
$geometries = array_merge($geometries, $this->parsePolygons());
$geometries = array_merge($geometries, $this->parseBoxes());
$geometries = array_merge($geometries, $this->parseCircles());
if (empty($geometries)) {
throw new FOX_exception(array('numeric' => 1, 'text' => "Invalid or empty GeoRSS data", 'data' => $geometries, 'file' => __FILE__, 'class' => __CLASS__, 'function' => __FUNCTION__, 'line' => __LINE__, 'child' => null));
}
return FOX_geo::geometryReduce($geometries);
}
public function geomFromXML()
{
$geometries = array();
$geom_types = FOX_geo::geometryList();
$placemark_elements = $this->xmlobj->getElementsByTagName('placemark');
if ($placemark_elements->length) {
foreach ($placemark_elements as $placemark) {
foreach ($placemark->childNodes as $child) {
// Node names are all the same, except for MultiGeometry, which maps to GeometryCollection
if ($child->nodeName == 'multigeometry') {
$node_name = 'geometrycollection';
} else {
$node_name = $child->nodeName;
}
if (array_key_exists($node_name, $geom_types)) {
$function = 'parse' . $geom_types[$node_name];
$geometries[] = $this->{$function}($child);
}
}
}
} else {
// The document does not have a placemark, try to create a valid geometry from the root element
if ($this->xmlobj->documentElement->nodeName == 'multigeometry') {
$node_name = 'geometrycollection';
} else {
$node_name = $this->xmlobj->documentElement->nodeName;
}
if (array_key_exists($node_name, $geom_types)) {
$function = 'parse' . $geom_types[$node_name];
$geometries[] = $this->{$function}($this->xmlobj->documentElement);
}
}
return FOX_geo::geometryReduce($geometries);
}
public function boundary()
{
if ($this->isEmpty()) {
return new LineString();
}
if ($this->geos()) {
return $this->geos()->boundary();
}
$components_boundaries = array();
foreach ($this->components as $component) {
$components_boundaries[] = $component->boundary();
}
return FOX_geo::geometryReduce($components_boundaries);
}
