@Override
public Layer createLayer(LayerContext ctx, PropertySet configuration) {
CoordinateReferenceSystem targetCrs = null;
if (ctx != null) {
targetCrs = (CoordinateReferenceSystem) ctx.getCoordinateReferenceSystem();
}
FeatureCollection<SimpleFeatureType, SimpleFeature> fc;
fc =
(FeatureCollection<SimpleFeatureType, SimpleFeature>)
configuration.getValue(FeatureLayerType.PROPERTY_NAME_FEATURE_COLLECTION);
if (fc == null) {
try {
final URL url =
(URL) configuration.getValue(FeatureLayerType.PROPERTY_NAME_FEATURE_COLLECTION_URL);
FeatureSource<SimpleFeatureType, SimpleFeature> featureSource =
FeatureUtils.getFeatureSource(url);
fc = featureSource.getFeatures();
} catch (IOException e) {
throw new IllegalArgumentException(e);
}
}
final CoordinateReferenceSystem featureCrs =
(CoordinateReferenceSystem)
configuration.getValue(FeatureLayerType.PROPERTY_NAME_FEATURE_COLLECTION_CRS);
final Geometry clipGeometry =
(Geometry)
configuration.getValue(FeatureLayerType.PROPERTY_NAME_FEATURE_COLLECTION_CLIP_GEOMETRY);
fc =
FeatureUtils.clipCollection(
fc,
featureCrs,
clipGeometry,
DefaultGeographicCRS.WGS84,
null,
targetCrs,
ProgressMonitor.NULL);
return new FeatureLayer(this, fc, configuration);
}
