Examples with FeatureCollection qupath.lib.io.PathObjectTypeAdapters.FeatureCollection used on opensource projects

Example 1 with FeatureCollection

use of qupath.lib.io.PathObjectTypeAdapters.FeatureCollection in project qupath by qupath.

the class PathIO method exportObjectsAsGeoJSON.

/**
 * Export a collection of objects as a GeoJSON "FeatureCollection" to an output stream.
 * @param stream
 * @param pathObjects
 * @param options
 * @throws IOException
 */
public static void exportObjectsAsGeoJSON(OutputStream stream, Collection<? extends PathObject> pathObjects, GeoJsonExportOptions... options) throws IOException {
    Collection<GeoJsonExportOptions> optionList = Arrays.asList(options);
    // If exclude measurements, 'transform' each PathObject to get rid of measurements
    if (optionList.contains(GeoJsonExportOptions.EXCLUDE_MEASUREMENTS))
        pathObjects = pathObjects.stream().map(e -> PathObjectTools.transformObject(e, null, false)).collect(Collectors.toList());
    var writer = new OutputStreamWriter(new BufferedOutputStream(stream), StandardCharsets.UTF_8);
    var gson = GsonTools.getInstance(optionList.contains(GeoJsonExportOptions.PRETTY_JSON));
    if (optionList.contains(GeoJsonExportOptions.FEATURE_COLLECTION))
        gson.toJson(GsonTools.wrapFeatureCollection(pathObjects), writer);
    else if (pathObjects.size() == 1) {
        gson.toJson(pathObjects.iterator().next(), writer);
    } else {
        gson.toJson(pathObjects, new TypeToken<List<PathObject>>() {
        }.getType(), writer);
    }
    writer.flush();
}