<?php
// get value of key or default value if key does not exist
-function array_get($key, $array, $default) {
- if (array_key_exists($key, $array)) return $array[$key];
- return $default;
-}
-
-
// gets coordinates and returns an array of lon/lat coordinate pairs, e.g.
// 47.12 N 11.87 E
// 47.13 N 11.70 E
// convert XML to geojson (http://www.geojson.org/geojson-spec.html)
// Returns an array of features
+// TODO: Error reporting
function xml_to_json_features($input) {
libxml_use_internal_errors(true); // without that, we get PHP Warnings if the $input is not well-formed
$xml = new SimpleXMLElement($input); // input
$json_features = array(); // output
+ $point_type = array('gasthaus' => 'inn', 'haltestelle' => 'busstop', 'parkplatz' => 'carpark', 'achtung' => 'attention', 'punkt' => 'point');
$line_type = array('rodelbahn' => 'sledrun', 'gehweg' => 'walk', 'alternative' => 'alternative', 'lift' => 'lift', 'linie' => 'line');
foreach ($xml as $feature) {
// point
- if (in_array($feature->getName(), array('gasthaus', 'haltestelle', 'parkplatz', 'punkt'))) {
- $wiki = array_get('wiki', $feature, null);
- $name = array_get('name', $feature, null);
+ if (in_array($feature->getName(), array_keys($point_type))) {
+ $properties = array('type' => $point_type[$feature->getName()]);
+ if (array_key_exists('wiki', $feature)) $properties['wiki'] = $feature['wiki'];
+ if (array_key_exists('name', $feature)) $properties['name'] = $feature['name'];
$json_feature = array(
'type' => 'feature',
'geometry' => array(
'type' => 'Point',
'coordinates' => geo_to_coordinates($feature)[0]
),
- 'properties' => array(
- 'type' => $feature->getName(),
- 'name' => $name,
- 'wiki' => $wiki
- )
+ 'properties' => $properties
);
$json_features[] = $json_feature;
}
// line
if (in_array($feature->getName(), array_keys($line_type))) {
- $properties = array();
+ $properties = array('type' => $line_type[$feature->getName()]);
if (array_key_exists('farbe', $feature)) $properties['strokeColor'] = $feature['farbe'];
if (array_key_exists('dicke', $feature)) $properties['strokeWidth'] = $feature['dicke'];
- $properties['type'] = $line_type[$feature->getName()];
$json_feature = array(
'type' => 'feature',
'geometry' => array(
// point layer
// -----------
+ var POINT_NAME = {'inn': 'Gasthaus', 'busstop': 'Haltestelle', 'carpark': 'Parkplatz', 'attention': 'Achtung', 'point': 'Punkt'};
var layer_point = new OpenLayers.Layer.Vector("Point", {
+ styleMap: new OpenLayers.StyleMap(new OpenLayers.Style({
+ externalGraphic: '/vorlagen/${getExternalGraphic}',
+ graphicWidth: 20,
+ graphicHeight: 34,
+ graphicXOffset: -10,
+ graphicYOffset: -33,
+ title: '${getTitle}'
+ }, {
+ context: {
+ getExternalGraphic: function(feature) {
+ if (feature.attributes.type == 'point') return 'gmap.png';
+ var name = POINT_NAME[feature.attributes.type];
+ if (name !== undefined) return 'gmap' + name + '.png';
+ return 'gmap.png'; // should not happen
+ },
+ getTitle: function(feature) {
+ var title = '';
+ if (feature.attributes.type != 'point') {
+ title = POINT_NAME[feature.attributes.type];
+ if (feature.attributes.name !== undefined) title += ': ';
+ }
+ if (feature.attributes.name !== undefined) title += feature.attributes.name;
+ return title;
+ }
+ }
+ })),
rendererOptions: {yOrdering: true}
});
-
+
// sledrun layer
// ------------
var layer_sledrun = new OpenLayers.Layer.Vector("Sledrun", {