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radar-wp-custom/vendor/phayes/geophp/lib/adapters/GoogleGeocode.class.php
2015-02-24 16:25:12 +01:00

158 lines
5.3 KiB
PHP

<?php
/*
* (c) Camptocamp <info@camptocamp.com>
* (c) Patrick Hayes
*
* This code is open-source and licenced under the Modified BSD License.
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/**
* PHP Google Geocoder Adapter
*
*
* @package geoPHP
* @author Patrick Hayes <patrick.d.hayes@gmail.com>
*/
class GoogleGeocode extends GeoAdapter
{
/**
* Read an address string or array geometry objects
*
* @param string - Address to geocode
* @param string - Type of Geometry to return. Can either be 'points' or 'bounds' (polygon)
* @param Geometry|bounds-array - Limit the search area to within this region. For example
* by default geocoding "Cairo" will return the location of Cairo Egypt.
* If you pass a polygon of illinois, it will return Cairo IL.
* @param return_multiple - Return all results in a multipoint or multipolygon
* @return Geometry|GeometryCollection
*/
public function read($address, $return_type = 'point', $bounds = FALSE, $return_multiple = FALSE) {
if (is_array($address)) $address = join(',', $address);
if (gettype($bounds) == 'object') {
$bounds = $bounds->getBBox();
}
if (gettype($bounds) == 'array') {
$bounds_string = '&bounds='.$bounds['miny'].','.$bounds['minx'].'|'.$bounds['maxy'].','.$bounds['maxx'];
}
else {
$bounds_string = '';
}
$url = "http://maps.googleapis.com/maps/api/geocode/json";
$url .= '?address='. urlencode($address);
$url .= $bounds_string;
$url .= '&sensor=false';
$this->result = json_decode(@file_get_contents($url));
if ($this->result->status == 'OK') {
if ($return_multiple == FALSE) {
if ($return_type == 'point') {
return $this->getPoint();
}
if ($return_type == 'bounds' || $return_type == 'polygon') {
return $this->getPolygon();
}
}
if ($return_multiple == TRUE) {
if ($return_type == 'point') {
$points = array();
foreach ($this->result->results as $delta => $item) {
$points[] = $this->getPoint($delta);
}
return new MultiPoint($points);
}
if ($return_type == 'bounds' || $return_type == 'polygon') {
$polygons = array();
foreach ($this->result->results as $delta => $item) {
$polygons[] = $this->getPolygon($delta);
}
return new MultiPolygon($polygons);
}
}
}
else {
if ($this->result->status) throw new Exception('Error in Google Geocoder: '.$this->result->status);
else throw new Exception('Unknown error in Google Geocoder');
return FALSE;
}
}
/**
* Serialize geometries into a WKT string.
*
* @param Geometry $geometry
* @param string $return_type Should be either 'string' or 'array'
*
* @return string Does a reverse geocode of the geometry
*/
public function write(Geometry $geometry, $return_type = 'string') {
$centroid = $geometry->getCentroid();
$lat = $centroid->getY();
$lon = $centroid->getX();
$url = "http://maps.googleapis.com/maps/api/geocode/json";
$url .= '?latlng='.$lat.','.$lon;
$url .= '&sensor=false';
$this->result = json_decode(@file_get_contents($url));
if ($this->result->status == 'OK') {
if ($return_type == 'string') {
return $this->result->results[0]->formatted_address;
}
if ($return_type == 'array') {
return $this->result->results[0]->address_components;
}
}
else {
if ($this->result->status) throw new Exception('Error in Google Reverse Geocoder: '.$this->result->status);
else throw new Exception('Unknown error in Google Reverse Geocoder');
return FALSE;
}
}
private function getPoint($delta = 0) {
$lat = $this->result->results[$delta]->geometry->location->lat;
$lon = $this->result->results[$delta]->geometry->location->lng;
return new Point($lon, $lat);
}
private function getPolygon($delta = 0) {
$points = array (
$this->getTopLeft($delta),
$this->getTopRight($delta),
$this->getBottomRight($delta),
$this->getBottomLeft($delta),
$this->getTopLeft($delta),
);
$outer_ring = new LineString($points);
return new Polygon(array($outer_ring));
}
private function getTopLeft($delta = 0) {
$lat = $this->result->results[$delta]->geometry->bounds->northeast->lat;
$lon = $this->result->results[$delta]->geometry->bounds->southwest->lng;
return new Point($lon, $lat);
}
private function getTopRight($delta = 0) {
$lat = $this->result->results[$delta]->geometry->bounds->northeast->lat;
$lon = $this->result->results[$delta]->geometry->bounds->northeast->lng;
return new Point($lon, $lat);
}
private function getBottomLeft($delta = 0) {
$lat = $this->result->results[$delta]->geometry->bounds->southwest->lat;
$lon = $this->result->results[$delta]->geometry->bounds->southwest->lng;
return new Point($lon, $lat);
}
private function getBottomRight($delta = 0) {
$lat = $this->result->results[$delta]->geometry->bounds->southwest->lat;
$lon = $this->result->results[$delta]->geometry->bounds->northeast->lng;
return new Point($lon, $lat);
}
}