@Test
public void test() throws IOException {
GeoJSONWriter writer = new GeoJSONWriter();
Point point = new GeometryFactory().createPoint(new Coordinate(1, 1));
GeoJSON json = writer.write(point);
System.out.println(json);
GeoJSONReader reader = new GeoJSONReader();
Geometry geometry = reader.read(json);
System.out.println(geometry);
LineString lineString =
new GeometryFactory()
.createLineString(
new Coordinate[] {
new Coordinate(1, 1),
new Coordinate(1, 2),
new Coordinate(2, 2),
new Coordinate(1, 1)
});
json = writer.write(lineString);
System.out.println(json);
Polygon polygon = new GeometryFactory().createPolygon(lineString.getCoordinates());
json = writer.write(polygon);
System.out.println(json);
MultiPoint multiPoint = new GeometryFactory().createMultiPoint(lineString.getCoordinates());
json = writer.write(multiPoint);
System.out.println(json);
MultiLineString multiLineString =
new GeometryFactory().createMultiLineString(new LineString[] {lineString, lineString});
json = writer.write(multiLineString);
System.out.println(json);
MultiPolygon multiPolygon =
new GeometryFactory().createMultiPolygon(new Polygon[] {polygon, polygon});
json = writer.write(multiPolygon);
System.out.println(json);
geometry = reader.read(json);
System.out.println(geometry);
}
public static void write(
Network network, LinkOccupancyCalculator linkVols, double factor, String file) {
Map<Link, Double> volumes = new HashMap<>(network.getLinks().size());
Map<Link, Double> loads = new HashMap<>(network.getLinks().size());
double maxVolume = 0;
double minVolume = Double.MAX_VALUE;
for (Link link : network.getLinks().values()) {
String linkId = link.getId().toString();
if (!(linkId.startsWith(ODCalibrator.VIRTUAL_ID_PREFIX) || linkId.contains(".l"))) {
double vol = linkVols.getOccupancy(link.getId()) * factor;
double load = vol / (link.getCapacity() * 24);
volumes.put(link, vol);
loads.put(link, load);
maxVolume = Math.max(maxVolume, vol);
minVolume = Math.min(minVolume, vol);
}
}
MathTransform transform = null;
try {
transform = CRS.findMathTransform(CRSUtils.getCRS(31467), CRSUtils.getCRS(4326));
} catch (FactoryException e) {
e.printStackTrace();
}
GeoJSONWriter jsonWriter = new GeoJSONWriter();
List<Feature> features = new ArrayList<>(network.getLinks().size());
for (Link link : volumes.keySet()) {
double coord1[] =
new double[] {link.getFromNode().getCoord().getX(), link.getFromNode().getCoord().getY()};
double coord2[] =
new double[] {link.getToNode().getCoord().getX(), link.getToNode().getCoord().getY()};
try {
transform.transform(coord1, 0, coord1, 0, 1);
transform.transform(coord2, 0, coord2, 0, 1);
} catch (TransformException e) {
e.printStackTrace();
}
double coords[][] = new double[2][2];
coords[0][0] = coord1[0];
coords[0][1] = coord1[1];
coords[1][0] = coord2[0];
coords[1][1] = coord2[1];
LineString lineString = new LineString(coords);
Map<String, Object> properties = new HashMap<>();
double volume = volumes.get(link);
double load = loads.get(link);
properties.put("volume", volume);
properties.put("load", load);
properties.put("capacity", link.getCapacity());
double width = (volume - minVolume) / (maxVolume - minVolume);
properties.put("width", width);
Color color = ColorUtils.getRedGreenColor(load);
properties.put("color", "#" + String.format("%06x", color.getRGB() & 0x00FFFFFF));
Feature feature = new Feature(lineString, properties);
features.add(feature);
}
try {
FeatureCollection fCollection = jsonWriter.write(features);
BufferedWriter writer = new BufferedWriter(new FileWriter(file));
writer.write(fCollection.toString());
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}