public function init($args)
{
parent::init($args);
$this->baseURL = $args['BASE_URL'];
// TODO find a better way to reuse JSON parsing code for ArcGIS-related data
$url = $this->baseURL . '?' . http_build_query(array('f' => 'json'));
$content = file_get_contents($url);
$data = json_decode($content, true);
if (isset($data['spatialReference'], $data['spatialReference']['wkid'])) {
$this->setMapProjection($data['spatialReference']['wkid']);
}
$this->unitsPerMeter = self::getScaleForEsriUnits($data['units']);
if (isset($data['supportedImageFormatTypes'])) {
$this->supportedImageFormats = $data['supportedImageFormatTypes'];
}
foreach ($data['layers'] as $layerData) {
$id = $layerData['id'];
$this->availableLayers[] = $id;
}
$this->enableAllLayers();
$bbox = $data['initialExtent'];
unset($bbox['spatialReference']);
$xrange = $bbox['xmax'] - $bbox['xmin'];
$yrange = $bbox['ymax'] - $bbox['ymin'];
$bbox['xmin'] += 0.4 * $xrange;
$bbox['xmax'] -= 0.4 * $xrange;
$bbox['ymin'] += 0.4 * $yrange;
$bbox['ymax'] -= 0.4 * $yrange;
$this->bbox = $bbox;
$this->zoomLevel = $this->zoomLevelForScale($this->getCurrentScale());
$this->center = array('lat' => ($this->bbox['ymin'] + $this->bbox['ymax']) / 2, 'lon' => ($this->bbox['xmin'] + $this->bbox['xmax']) / 2);
}
public function init($args)
{
parent::init($args);
$this->baseURL = $args['BASE_URL'];
// TODO find a better way to reuse JSON parsing code for ArcGIS-related data
$url = $this->baseURL . '?' . http_build_query(array('f' => 'json'));
$content = file_get_contents($url);
$data = json_decode($content, true);
if (isset($data['spatialReference'], $data['spatialReference']['wkid'])) {
$this->setMapProjection($data['spatialReference']['wkid']);
}
if (isset($data['supportedImageFormatTypes'])) {
$this->supportedImageFormats = $data['supportedImageFormatTypes'];
}
foreach ($data['layers'] as $layerData) {
$id = $layerData['id'];
$this->availableLayers[] = $id;
}
$this->enableAllLayers();
}
