boolean isSingleFloor(List<Sample> samples) {
Set<Double> floorSet = new HashSet<>();
for (Sample s : samples) {
Location loc = s.getLocation();
double z = loc.getZ();
floorSet.add(z);
}
if (floorSet.size() == 1) {
return true;
} else {
return false;
}
}
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<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;
}