public static List<Wall> readWalls(InputStream is) {
int z = 0;
List<Wall> walls = new ArrayList<>();
try {
JSONObject json = (JSONObject) JSON.parse(is);
String type = json.getString("type");
if (type.equals("FeatureCollection")) {
JSONArray features = json.getJSONArray("features");
Iterator<JSONObject> iter = features.iterator();
while (iter.hasNext()) {
JSONObject feature = iter.next();
JSONObject properties = feature.getJSONObject("properties");
JSONObject geometry = feature.getJSONObject("geometry");
type = properties.getString("type");
if (type.equals("wall")) {
double height = Double.parseDouble(properties.getString("height"));
double attenuation = Double.parseDouble(properties.getString("decay"));
JSONArray coordsArray = geometry.getJSONArray("coordinates");
int npoints = coordsArray.size();
for (int i = 0; i < npoints - 1; i++) {
JSONArray p0 = coordsArray.getJSONArray(i);
JSONArray p1 = coordsArray.getJSONArray(i + 1);
Wall wall =
new Wall.Builder(
p0.getDouble(0), p0.getDouble(1), p1.getDouble(0), p1.getDouble(1))
.height(height)
.attenuation(attenuation)
.build();
walls.add(wall);
}
}
}
}
} catch (NullPointerException | JSONException e) {
e.printStackTrace();
}
return walls;
}
public static List<Location> readWalkLocations(InputStream is) {
int z = 0;
List<Location> locs = new ArrayList<>();
try {
JSONObject json = (JSONObject) JSON.parse(is);
String type = json.getString("type");
if (type.equals("FeatureCollection")) {
JSONArray features = json.getJSONArray("features");
Iterator<JSONObject> iter = features.iterator();
while (iter.hasNext()) {
JSONObject feature = iter.next();
JSONObject properties = feature.getJSONObject("properties");
JSONObject geometry = feature.getJSONObject("geometry");
type = properties.getString("type");
if (type.equals("walk")) {
double height = Double.parseDouble(properties.getString("height"));
int repeat = Integer.parseInt(properties.getString("repeat"));
JSONArray coordinates = geometry.getJSONArray("coordinates");
Iterator<JSONArray> iterCoords = coordinates.iterator();
while (iterCoords.hasNext()) {
JSONArray coord = iterCoords.next();
double x = coord.getDouble(0);
double y = coord.getDouble(1);
Location loc = new Location(x, y, z);
loc.setH((float) height);
for (int t = 0; t < repeat; t++) {
locs.add(loc);
}
}
}
}
}
} catch (NullPointerException | JSONException e) {
e.printStackTrace();
}
return locs;
}
public static List<BLEBeacon> readMapBLEBeacons(InputStream is) {
int z = 0;
List<BLEBeacon> bleBeacons = new ArrayList<>();
try {
JSONObject json = (JSONObject) JSON.parse(is);
String type = json.getString("type");
if (type.equals("FeatureCollection")) {
JSONArray features = json.getJSONArray("features");
Iterator<JSONObject> iter = features.iterator();
while (iter.hasNext()) {
JSONObject feature = iter.next();
JSONObject properties = feature.getJSONObject("properties");
JSONObject geometry = feature.getJSONObject("geometry");
type = properties.getString("type");
if (type.equals("beacon")) {
int major = Integer.parseInt(properties.getString("major"));
int minor = Integer.parseInt(properties.getString("minor"));
String uuid = properties.getString("uuid");
int outPower = Integer.parseInt(properties.getString("power"));
int interval = Integer.parseInt(properties.getString("interval"));
double x = geometry.getJSONArray("coordinates").getInt(0);
double y = geometry.getJSONArray("coordinates").getInt(1);
BLEBeacon bleBeacon = new BLEBeacon(minor, major, minor, x, y, z);
bleBeacon.setUuid(uuid);
bleBeacon.setOutputPower(outPower);
bleBeacons.add(bleBeacon);
}
}
}
} catch (NullPointerException | JSONException e) {
e.printStackTrace();
}
return bleBeacons;
}
public static List<Location> readGridLocations(InputStream is) {
int z = 0;
List<Location> locs = new ArrayList<>();
try {
JSONObject json = (JSONObject) JSON.parse(is);
String type = json.getString("type");
if (type.equals("FeatureCollection")) {
JSONArray features = json.getJSONArray("features");
Iterator<JSONObject> iter = features.iterator();
while (iter.hasNext()) {
JSONObject feature = iter.next();
JSONObject properties = feature.getJSONObject("properties");
JSONObject geometry = feature.getJSONObject("geometry");
String propertiesType = properties.getString("type");
String geometryType = geometry.getString("type");
if (propertiesType.equals("grid")) {
double height = Double.parseDouble(properties.getString("height"));
int repeat = Integer.parseInt(properties.getString("repeat"));
int spacing = Integer.parseInt(properties.getString("interval"));
JSONArray coordinates = geometry.getJSONArray("coordinates");
Iterator<JSONArray> iterCoords = null;
if (geometryType.equals("Polygon")) {
JSONArray exteriorRing = coordinates.getJSONArray(0);
iterCoords = exteriorRing.iterator();
} else if (geometryType.equals("LineString")) {
iterCoords = coordinates.iterator();
}
double minx = Double.MAX_VALUE;
double miny = Double.MAX_VALUE;
double maxx = -Double.MAX_VALUE;
double maxy = -Double.MAX_VALUE;
while (iterCoords.hasNext()) {
JSONArray coord = iterCoords.next();
double x = coord.getDouble(0);
double y = coord.getDouble(1);
minx = Math.min(minx, x);
miny = Math.min(miny, y);
maxx = Math.max(maxx, x);
maxy = Math.max(maxy, y);
}
double x = minx;
while (x <= maxx) {
double y = miny;
while (y <= maxy) {
Location loc = new Location(x, y, z);
loc.setH((float) height);
for (int t = 0; t < repeat; t++) {
locs.add(loc);
}
y += spacing;
}
x += spacing;
}
}
}
}
} catch (NullPointerException | JSONException e) {
e.printStackTrace();
}
return locs;
}