/
MapHelperClass.java
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/
MapHelperClass.java
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package com.ezio.multiwii.waypoints;
import java.util.ArrayList;
import java.util.List;
import android.graphics.Color;
import android.location.Location;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.LocationSource;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.Circle;
import com.google.android.gms.maps.model.CircleOptions;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.android.gms.maps.model.Polyline;
import com.google.android.gms.maps.model.PolylineOptions;
public class MapHelperClass implements LocationSource {
public GoogleMap map;
private Polyline WPPathPolyLine;
public Marker HomeMarker;
public Marker PositionHoldMarker;
public List<Marker> markers = new ArrayList<Marker>();
public Circle CurrentWPCircle;
private List<LatLng> FlyingPathPoints = new ArrayList<LatLng>();
private int FlyingPathPointsCount = 20;
private Polyline FlightPathPolyLine;
private OnLocationChangedListener onLocationChangedListener;
private int distanceWhenWPReached;
public MapHelperClass(GoogleMap map, int distanceWhenWPReached) {
this.map = map;
this.distanceWhenWPReached = distanceWhenWPReached;
map.setMyLocationEnabled(true);
map.setLocationSource(this);
map.setMapType(GoogleMap.MAP_TYPE_SATELLITE);
CleanMap();
}
public void RedrawLines() {
if (WPPathPolyLine != null) {
WPPathPolyLine.remove();
WPPathPolyLine = null;
}
PolylineOptions polylineOptions = new PolylineOptions().color(Color.CYAN).width(4);
for (Marker m : markers) {
polylineOptions.add(m.getPosition());
}
WPPathPolyLine = map.addPolyline(polylineOptions);
}
public void DrawFlightPath(LatLng copterPositionLatLng) {
if (FlyingPathPoints.size() == 0) {
FlyingPathPoints.add(copterPositionLatLng);
return;
}
if (gps2m(copterPositionLatLng.latitude, copterPositionLatLng.longitude, FlyingPathPoints.get(FlyingPathPoints.size() - 1).latitude, FlyingPathPoints.get(FlyingPathPoints.size() - 1).longitude) > 5) {
FlyingPathPoints.add(copterPositionLatLng);
if (FlyingPathPoints.size() > FlyingPathPointsCount) {
FlyingPathPoints.remove(0);
}
if (FlightPathPolyLine != null) {
FlightPathPolyLine.remove();
FlightPathPolyLine = null;
}
PolylineOptions polylineOptions = new PolylineOptions().color(Color.argb(100, 0, 255, 255));
for (LatLng p : FlyingPathPoints) {
polylineOptions.add(p);
}
FlightPathPolyLine = map.addPolyline(polylineOptions);
}
}
public void AddMarker() {
LatLng mapCenter = map.getCameraPosition().target;
Marker m = map.addMarker(new MarkerOptions().position(mapCenter).draggable(true).icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE)));
markers.add(m);
int i = 1;
for (Marker mm : markers) {
mm.setTitle("WP#" + String.valueOf(i));
i++;
}
RedrawLines();
}
public void AddMarker(LatLng position) {
Marker m = map.addMarker(new MarkerOptions().position(position).draggable(true).icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE)));
markers.add(m);
int i = 1;
for (Marker mm : markers) {
mm.setTitle("WP#" + String.valueOf(i));
i++;
}
RedrawLines();
}
public void CleanMap() {
markers = new ArrayList<Marker>();
map.clear();
addDefaultMarkersToMap();
}
public void RemoveMarker(int position) {
markers.get(position).remove();
markers.remove(position);
}
void addDefaultMarkersToMap() {
LatLng mapCenter = map.getCameraPosition().target;
HomeMarker = map.addMarker(new MarkerOptions().position(mapCenter).title("Home").icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)).draggable(true));
PositionHoldMarker = map.addMarker(new MarkerOptions().position(mapCenter).title("PositionHold").icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN)));
CurrentWPCircle = map.addCircle(new CircleOptions().center(mapCenter).radius(distanceWhenWPReached).fillColor(Color.argb(50, 0, 255, 50)));
CurrentWPCircle.setStrokeWidth(2);
}
@Override
public void activate(OnLocationChangedListener onLocationChangedListener) {
this.onLocationChangedListener = onLocationChangedListener;
}
@Override
public void deactivate() {
this.onLocationChangedListener = null;
}
public static double gps2m(double lat_a, double lng_a, double lat_b, double lng_b) {
Location locationA = new Location("point A");
locationA.setLatitude(lat_a);
locationA.setLongitude(lng_a);
Location locationB = new Location("point B");
locationB.setLatitude(lat_b);
locationB.setLongitude(lng_b);
return locationA.distanceTo(locationB);
}
public void SetCopterLocation(LatLng copterPositionLatLng, float head, float alt) {
if (onLocationChangedListener != null) {
Location copterLocation = new Location("CustomCopterLocation");
copterLocation.setLatitude(copterPositionLatLng.latitude);
copterLocation.setLongitude(copterPositionLatLng.longitude);
copterLocation.setBearing(head);
copterLocation.setAccuracy(2);
copterLocation.setAltitude(alt);
onLocationChangedListener.onLocationChanged(copterLocation);
}
}
static double FullCircleDegrees = 360d;
static double HalfCircleDegrees = FullCircleDegrees / 2d;
static double DegreesToRadians = Math.PI / HalfCircleDegrees;
static double RadiansToDegrees = 1 / DegreesToRadians;
public static LatLng GetPointGivenRadialAndDistance(LatLng center, double radius, double azimuth) {
radius = radius * (1.56961231e-7);
double lat1 = center.latitude * DegreesToRadians;
double lng1 = center.longitude * DegreesToRadians;
double lat = Math.asin((Math.sin(lat1) * Math.cos(radius)) + Math.cos(lat1) * Math.sin(radius) * Math.cos(azimuth * DegreesToRadians));
double lng = 0d;
if (Math.cos(lat) == 0) {
lng = lng1;
} else {
lng = ((lng1 + Math.PI - Math.asin(Math.sin(azimuth * DegreesToRadians) * Math.sin(radius) / Math.cos(lat1))) % (2 * Math.PI)) - Math.PI;
}
return new LatLng(lat * RadiansToDegrees, lng * RadiansToDegrees);
}
}