/// <summary>
/// Initializes a new instance of the <see cref="OsmSharp.Math.Primitives.RectangleF2D"/> class.
/// </summary>
/// <param name="x">The x coordinate of the bottom-left corner.</param>
/// <param name="y">The y coordinate of the bottom-left corner.</param>
/// <param name="width">Width.</param>
/// <param name="height">Height.</param>
/// <param name="angleY">The angle relative to the y-axis.</param>
public RectangleF2D(double x, double y, double width, double height, Degree angleY)
{
_bottomLeft = new PointF2D (x, y);
VectorF2D directionY = VectorF2D.FromAngleY (angleY);
_vectorY = directionY * height;
_vectorX = directionY.Rotate90 (true) * width;
}
/// <summary>
/// Converts the latitude to a projected y-coordinate.
/// </summary>
/// <param name="lat"></param>
/// <returns></returns>
public double LatitudeToY(double lat)
{
double n = System.Math.Floor(System.Math.Pow(2, DefaultZoom));
Radian rad = new Degree(lat);
return (
(1.0f - (System.Math.Log(System.Math.Tan(rad.Value) + (1.0f / System.Math.Cos(rad.Value))))
/ System.Math.PI) / 2f * (double)n);
}
/// <summary>
/// Creates a new angle in degrees.
/// </summary>
/// <param name="value"></param>
public Degree(double value)
: base(Degree.Normalize(value))
{
}
/// <summary>
/// Sets the map view.
/// </summary>
/// <param name="center">Center.</param>
/// <param name="mapTilt">Map tilt.</param>
/// <param name="mapZoom">Map zoom.</param>
public void SetMapView(GeoCoordinate center, Degree mapTilt, float mapZoom)
{
this.SetMapView (center, mapTilt, mapZoom, true);
}
/// <summary>
/// Sets the map view.
/// </summary>
/// <param name="center">Center.</param>
/// <param name="mapTilt">Map tilt.</param>
/// <param name="mapZoom">Map zoom.</param>
public void SetMapView(GeoCoordinate center, Degree mapTilt, float mapZoom)
{
_mapCenter = center;
_mapTilt = mapTilt;
this.MapZoom = mapZoom;
(this.Context as Activity).RunOnUiThread(NotifyMovement);
}
/// <summary>
/// Initialize the specified defaultMapCenter, defaultMap, defaultMapTilt and defaultMapZoom.
/// </summary>
/// <param name="defaultMapCenter">Default map center.</param>
/// <param name="defaultMap">Default map.</param>
/// <param name="defaultMapTilt">Default map tilt.</param>
/// <param name="defaultMapZoom">Default map zoom.</param>
public void Initialize(GeoCoordinate defaultMapCenter, Map defaultMap, Degree defaultMapTilt, float defaultMapZoom)
{
// register the default listener.
(this as IInvalidatableMapSurface).RegisterListener(new DefaultTrigger(this));
// enable all interactions by default.
this.MapAllowPan = true;
this.MapAllowTilt = true;
this.MapAllowZoom = true;
// set clip to bounds to prevent objects from being rendered/show outside of the mapview.
this.ClipsToBounds = true;
MapCenter = defaultMapCenter;
_map = defaultMap;
MapTilt = defaultMapTilt;
MapZoom = defaultMapZoom;
_map.MapChanged += MapChanged;
_doubleTapAnimator = new MapViewAnimator(this);
this.BackgroundColor = UIColor.White;
this.UserInteractionEnabled = true;
if (UIDevice.CurrentDevice.CheckSystemVersion(7, 0))
{
var panGesture = new UIPanGestureRecognizer(Pan);
panGesture.ShouldRecognizeSimultaneously += (UIGestureRecognizer r, UIGestureRecognizer other) =>
{
return true;
};
// TODO: workaround for xamarin bug, remove later!
panGesture.ShouldRequireFailureOf = (a, b) =>
{
return false;
};
panGesture.ShouldBeRequiredToFailBy = (a, b) =>
{
return false;
};
this.AddGestureRecognizer(panGesture);
var pinchGesture = new UIPinchGestureRecognizer(Pinch);
pinchGesture.ShouldRecognizeSimultaneously += (UIGestureRecognizer r, UIGestureRecognizer other) =>
{
return true;
};
// TODO: workaround for xamarin bug, remove later!
pinchGesture.ShouldRequireFailureOf = (a, b) =>
{
return false;
};
pinchGesture.ShouldBeRequiredToFailBy = (a, b) =>
{
return false;
};
this.AddGestureRecognizer(pinchGesture);
var rotationGesture = new UIRotationGestureRecognizer(Rotate);
rotationGesture.ShouldRecognizeSimultaneously += (UIGestureRecognizer r, UIGestureRecognizer other) =>
{
return true;
};
// TODO: workaround for xamarin bug, remove later!
rotationGesture.ShouldRequireFailureOf = (a, b) =>
{
return false;
};
rotationGesture.ShouldBeRequiredToFailBy = (a, b) =>
{
return false;
};
this.AddGestureRecognizer(rotationGesture);
var singleTapGesture = new UITapGestureRecognizer(SingleTap);
singleTapGesture.NumberOfTapsRequired = 1;
// TODO: workaround for xamarin bug, remove later!
// singleTapGesture.ShouldRequireFailureOf = (a, b) => { return false; };
// singleTapGesture.ShouldBeRequiredToFailBy = (a, b) => { return false; };
var doubleTapGesture = new UITapGestureRecognizer(DoubleTap);
doubleTapGesture.NumberOfTapsRequired = 2;
// TODO: workaround for xamarin bug, remove later!
// doubleTapGesture.ShouldRequireFailureOf = (a, b) => { return false; };
// doubleTapGesture.ShouldBeRequiredToFailBy = (a, b) => { return false; };
//singleTapGesture.RequireGestureRecognizerToFail (doubleTapGesture);
this.AddGestureRecognizer(singleTapGesture);
this.AddGestureRecognizer(doubleTapGesture);
}
else
{
var panGesture = new UIPanGestureRecognizer(Pan);
panGesture.ShouldRecognizeSimultaneously += (UIGestureRecognizer r, UIGestureRecognizer other) =>
{
return true;
};
this.AddGestureRecognizer(panGesture);
var pinchGesture = new UIPinchGestureRecognizer(Pinch);
pinchGesture.ShouldRecognizeSimultaneously += (UIGestureRecognizer r, UIGestureRecognizer other) =>
{
return true;
};
this.AddGestureRecognizer(pinchGesture);
var rotationGesture = new UIRotationGestureRecognizer(Rotate);
rotationGesture.ShouldRecognizeSimultaneously += (UIGestureRecognizer r, UIGestureRecognizer other) =>
{
return true;
};
this.AddGestureRecognizer(rotationGesture);
var singleTapGesture = new UITapGestureRecognizer(SingleTap);
singleTapGesture.NumberOfTapsRequired = 1;
//singleTapGesture.ShouldRecognizeSimultaneously += ShouldRecognizeSimultaneouslySingle;
//singleTapGesture.ShouldBeRequiredToFailBy += ShouldRecognizeSimultaneouslySingle;
var doubleTapGesture = new UITapGestureRecognizer(DoubleTap);
doubleTapGesture.NumberOfTapsRequired = 2;
//doubleTapGesture.ShouldRecognizeSimultaneously += ShouldRecognizeSimultaneouslySingle;
//doubleTapGesture.ShouldBeRequiredToFailBy += ShouldRecognizeSimultaneouslyDouble;
singleTapGesture.RequireGestureRecognizerToFail(doubleTapGesture);
this.AddGestureRecognizer(singleTapGesture);
this.AddGestureRecognizer(doubleTapGesture);
}
// set scalefactor.
_scaleFactor = (float)this.ContentScaleFactor;
// create the cache renderer.
_cacheRenderer = new MapRenderer<CGContextWrapper>(
new CGContextRenderer(_scaleFactor));
_backgroundColor = SimpleColor.FromKnownColor(KnownColor.White).Value;
}
/// <summary>
/// Creates a new instance of the <see cref="OsmSharp.UI.Renderer.View2D"/> class.
/// </summary>
/// <param name="width">The width.</param>
/// <param name="height">The height.</param>
/// <param name="centerX">The center x.</param>
/// <param name="centerY">The center y.</param>
/// <param name="xInverted">When true x increases from left to right, when false otherwise.</param>
/// <param name="yInverted">When true y increases from bottom to top, when false otherwise.</param>
/// <param name="angleY"></param>
public static View2D CreateFromCenterAndSize(double width, double height, double centerX, double centerY,
bool xInverted, bool yInverted, Degree angleY)
{
if(width <= 0)
{
throw new ArgumentOutOfRangeException("width", "width has to be larger and not equal to zero.");
}
if(height <= 0)
{
throw new ArgumentOutOfRangeException("height", "height has to be larger and not equal to zero.");
}
return new View2D(RectangleF2D.FromBoundsAndCenter(width, height,
centerX, centerY, angleY), xInverted, yInverted);
}
/// <summary>
/// Sets the map view.
/// </summary>
/// <param name="center">Center.</param>
/// <param name="mapTilt">Map tilt.</param>
/// <param name="mapZoom">Map zoom.</param>
public void SetMapView(GeoCoordinate center, Degree mapTilt, float mapZoom)
{
//this.MapCenter = center;
if (this.Width == 0 || this.MapBoundingBox == null)
{
_mapCenter = center;
}
else
{
_mapCenter = this.Map.EnsureViewWithinBoundingBox(center, this.MapBoundingBox, this.CurrentView);
}
//this.MapTilt = mapTilt;
_mapTilt = mapTilt;
//this.MapZoom = mapZoom;
if (mapZoom > this.MapMaxZoomLevel)
{
_mapZoomLevel = this.MapMaxZoomLevel;
}
else if (mapZoom < this.MapMinZoomLevel)
{
_mapZoomLevel = this.MapMinZoomLevel;
}
else
{
_mapZoomLevel = mapZoom;
}
_previouslyRenderedView = null;
_previouslyChangedView = null;
(this.Context as Activity).RunOnUiThread(NotifyMovement);
}
/// <summary>
/// Creates a new RectangleF2D from given bounds, center and angle.
/// </summary>
/// <param name="centerX"></param>
/// <param name="centerY"></param>
/// <param name="width">Width.</param>
/// <param name="height">Height.</param>
/// <param name="angleY">The angle.</param>
/// <returns></returns>
public static RectangleF2D FromBoundsAndCenter(double width, double height, double centerX, double centerY, Degree angleY)
{
return RectangleF2D.FromBoundsAndCenter(width, height, centerX, centerY, VectorF2D.FromAngleY(angleY));
}
/// <summary>
/// Substracts the two angles returning an angle in the range -180, +180
/// </summary>
/// <param name="angle"></param>
/// <returns></returns>
public double Subtract180(Degree angle)
{
return -angle.Range180() + this.Range180();
}
/// <summary>
/// Starts an animation to the given parameters.
/// </summary>
/// <param name="center"></param>
/// <param name="zoomLevel"></param>
/// <param name="mapTilt"></param>
/// <param name="time"></param>
public void Start(GeoCoordinate center, float zoomLevel, Degree mapTilt, TimeSpan time)
{
lock (this)
{
// stop the previous timer.
if (_timer != null)
{ // timer exists.
_timer.Dispose();
_timer = null;
}
// set the targets.
_targetCenter = center;
_targetTilt = mapTilt;
_targetZoom = zoomLevel;
// calculate the animation steps.
_maxSteps = (int)System.Math.Round((double)time.TotalMilliseconds / (double)_minimumTimeSpan.TotalMilliseconds, 0);
_currentStep = 0;
_stepCenter = new GeoCoordinate(
(_targetCenter.Latitude - _mapView.MapCenter.Latitude) / _maxSteps,
(_targetCenter.Longitude - _mapView.MapCenter.Longitude) / _maxSteps);
_stepZoom = (float)((_targetZoom - _mapView.MapZoom) / _maxSteps);
// calculate the map tilt, make sure it turns along the smallest corner.
double diff = _targetTilt.Subtract180(_mapView.MapTilt);
OsmSharp.Logging.Log.TraceEvent ("MapViewAnimator", OsmSharp.Logging.TraceEventType.Information, diff.ToString());
_stepTilt = (diff / _maxSteps);
OsmSharp.Logging.Log.TraceEvent("MapViewAnimator", OsmSharp.Logging.TraceEventType.Verbose,
string.Format("Started new animation with steps z:{0} t:{1} c:{2} to z:{3} t:{4} c:{5} from z:{6} t:{7} c:{8}.",
_stepZoom, _stepTilt, _stepCenter.ToString(),
_targetZoom, _targetTilt, _targetCenter.ToString(),
_mapView.MapZoom, _mapView.MapTilt, _mapView.MapCenter.ToString()));
// disable auto invalidate.
//_mapView.AutoInvalidate = false;
_mapView.RegisterAnimator (this);
// start the timer.
_timer = new Timer(new TimerCallback(_timer_Elapsed), null, 0, (int)_minimumTimeSpan.TotalMilliseconds);
}
}
/// <summary>
/// Maps the view map touched.
/// </summary>
/// <param name="mapView">Map view.</param>
/// <param name="newZoom">New zoom.</param>
/// <param name="newTilt">New tilt.</param>
/// <param name="newCenter">New center.</param>
private void MapViewMapTouched(IMapView mapView, float newZoom, Degree newTilt, GeoCoordinate newCenter)
{
if (newZoom > this.MinZoom) {
this.DefaultZoom = System.Math.Min (newZoom, this.MaxZoom);
} else {
_lastTouch = DateTime.Now.Ticks;
}
}
/// <summary>
/// Starts an animation to a given map tilt that will take the given timespan.
/// </summary>
/// <param name="mapTilt"></param>
/// <param name="time"></param>
public void Start(Degree mapTilt, TimeSpan time)
{
this.Start(_mapView.MapCenter, _mapView.MapZoom, mapTilt, time);
}
/// <summary>
/// Starts an animation to a given map tilt.
/// </summary>
/// <param name="mapTilt"></param>
public void Start(Degree mapTilt)
{
this.Start(_mapView.MapCenter, _mapView.MapZoom, mapTilt, _defaultTimeSpan);
}
/// <summary>
/// Updates the tracker with the given location and angle.
/// </summary>
/// <param name="location">The measured location.</param>
/// <param name="angle">The angle relative to the north measure clockwise.</param>
public void Track(GeoCoordinate location, Degree angle)
{
if (location == null) { throw new ArgumentNullException("location"); }
if (_lastTouch.HasValue) {
// is tracking disabled now?
TimeSpan timeFromLastTouch = new TimeSpan (DateTime.Now.Ticks - _lastTouch.Value);
if (timeFromLastTouch.TotalSeconds >= this.RestartAfterTouch.Value) {
// ok, the animator has waited long enough.
_lastTouch = null;
} else {
// ok, the animator still has to wait for user-input.
return;
}
}
// check if the minimum gap between tracking events is respected.
long now = DateTime.Now.Ticks;
if (_lastTrack.HasValue) {
if (_minimumTrackGap > now - _lastTrack.Value) {
return; // too fast!
}
}
_lastTrack = now;
// animate the next step(s).
TimeSpan lastTrackInterval = new TimeSpan(0, 0, 0, 0, 750);
long ticks = DateTime.Now.Ticks;
if (_lastTicks.HasValue)
{ // update the last track interval.
lastTrackInterval = TimeSpan.FromTicks(ticks - _lastTicks.Value);
}
_lastTicks = ticks;
OsmSharp.Logging.Log.TraceEvent("RouteTrackerAnimator", OsmSharp.Logging.TraceEventType.Information,
"Interval: {0}ms", lastTrackInterval.TotalMilliseconds);
// give location to the route tracker.
_routeTracker.Track(location);
// calculate all map view parameters (zoom, location, tilt) to display the route/direction correctly.
float zoom = this.DefaultZoom;
GeoCoordinate center = _routeTracker.PositionRoute;
double nextDistance = 50;
Degree tilt = _mapView.MapTilt;
GeoCoordinate next = _routeTracker.PositionAfter(nextDistance);
if (next != null) {
IProjection projection = _mapView.Map.Projection;
VectorF2D direction = new PointF2D(projection.ToPixel(next)) -
new PointF2D(projection.ToPixel(center));
tilt = direction.Angle(new VectorF2D(0, -1));
}
// overwrite calculated tilt with the given degrees.
if (angle != null)
{
tilt = angle;
}
OsmSharp.Logging.Log.TraceEvent("RouteTrackerAnimator", OsmSharp.Logging.TraceEventType.Information,
"Tracking Event: {0}, {1}, {2}", center, zoom, tilt);
// animate to the given parameter (zoom, location, tilt).
_animator.Stop();
_animator.Start(center, zoom, tilt, lastTrackInterval.Subtract(new TimeSpan(0, 0, 0, 0, 50)));
}
/// <summary>
/// Rotate the specified rotation.
/// </summary>
/// <param name="rotation">Rotation.</param>
private void Rotate(UIRotationGestureRecognizer rotation)
{
//RectangleF2D rect = _rect;
RectangleF rect = this.Frame;
if (this.MapAllowTilt &&
rect.Width > 0)
{
this.StopCurrentAnimation();
if (rotation.State == UIGestureRecognizerState.Ended)
{
// View2D rotatedView = _mapViewBefore.RotateAroundCenter ((Radian)rotation.Rotation);
// _mapTilt = (float)((Degree)rotatedView.Rectangle.Angle).Value;
// PointF2D sceneCenter = rotatedView.Rectangle.Center;
// _mapCenter = this.Map.Projection.ToGeoCoordinates (
// sceneCenter [0], sceneCenter [1]);
this.Change(true);
_mapViewBefore = null;
}
else if (rotation.State == UIGestureRecognizerState.Began)
{
_mapViewBefore = this.CreateView(rect);
}
else
{
//_mapViewBefore = this.CreateView (_rect);
View2D rotatedView = _mapViewBefore.RotateAroundCenter((Radian)rotation.Rotation);
_mapTilt = (float)((Degree)rotatedView.Rectangle.Angle).Value;
PointF2D sceneCenter = rotatedView.Rectangle.Center;
_mapCenter = this.Map.Projection.ToGeoCoordinates(
sceneCenter[0], sceneCenter[1]);
this.InvokeOnMainThread(InvalidateMap);
}
}
}
/// <summary>
/// Rotates this rectangle around the given center point with a given angle in clockwise direction.
/// </summary>
/// <returns>The around.</returns>
/// <param name="angle">Angle.</param>
/// <param name="center">Center.</param>
public RectangleF2D RotateAround(Degree angle, PointF2D center)
{
PointF2D[] corners = new PointF2D[] { this.TopLeft, this.TopRight, this.BottomLeft, this.BottomRight };
PointF2D[] cornersRotated = Rotation.RotateAroundPoint (angle, center, corners);
return new RectangleF2D (cornersRotated [2], this.Width, this.Height,
cornersRotated [0] - cornersRotated [2]);
}
/// <summary>
/// Sets the map view.
/// </summary>
/// <param name="center">Center.</param>
/// <param name="mapTilt">Map tilt.</param>
/// <param name="mapZoom">Map zoom.</param>
void IMapView.SetMapView(GeoCoordinate center, Degree mapTilt, float mapZoom)
{
_mapCenter = center;
_mapTilt = mapTilt;
this.MapZoom = mapZoom;
this.InvalidateMapCenter();
this.InvokeOnMainThread(InvalidateMap);
}
/// <summary>
/// Rotates this rectangle around it's center point with a given angle in clockwise direction.
/// </summary>
/// <returns>The around center.</returns>
/// <param name="angle">Angle.</param>
public RectangleF2D RotateAroundCenter(Degree angle)
{
return this.RotateAround (angle, this.Center);
}
/// <summary>
/// Creates a view based on a center location a zoomfactor and the size of the current viewport.
/// </summary>
/// <param name="centerX"></param>
/// <param name="centerY"></param>
/// <param name="pixelsWidth"></param>
/// <param name="pixelsHeight"></param>
/// <param name="zoomFactor"></param>
/// <param name="xInverted"></param>
/// <param name="yInverted"></param>
/// <param name="angleY"></param>
/// <returns></returns>
public static View2D CreateFrom(double centerX, double centerY, double pixelsWidth, double pixelsHeight,
double zoomFactor, bool xInverted, bool yInverted, Degree angleY)
{
double realZoom = zoomFactor;
double width = pixelsWidth / realZoom;
double height = pixelsHeight / realZoom;
return View2D.CreateFromCenterAndSize(width, height, centerX, centerY, xInverted, yInverted, angleY);
}
/// <summary>
/// Calculates the real distance in meters between this point and the given point.
/// </summary>
/// <param name="point"></param>
/// <returns></returns>
/// <remarks>http://en.wikipedia.org/wiki/Haversine_formula</remarks>
public Meter DistanceReal(GeoCoordinate point)
{
Meter radius_earth = Constants.RadiusOfEarth;
Radian lat1_rad = new Degree(this.Latitude);
Radian lon1_rad = new Degree(this.Longitude);
Radian lat2_rad = new Degree(point.Latitude);
Radian lon2_rad = new Degree(point.Longitude);
double dLat = (lat2_rad - lat1_rad).Value;
double dLon = (lon2_rad - lon1_rad).Value;
double a = System.Math.Pow(System.Math.Sin(dLat / 2), 2) +
System.Math.Cos(lat1_rad.Value) * System.Math.Cos(lat2_rad.Value) *
System.Math.Pow(System.Math.Sin(dLon / 2), 2);
double c = 2 * System.Math.Atan2(System.Math.Sqrt(a), System.Math.Sqrt(1 - a));
double distance = radius_earth.Value * c;
return distance;
}
/// <summary>
/// Raises the touch event.
/// </summary>
/// <param name="v">V.</param>
/// <param name="e">E.</param>
public bool OnTouch(global::Android.Views.View v, MotionEvent e)
{
try
{
if (!_renderingSuspended && this.Map != null && this.Map.Projection != null && this.MapCenter != null)
{
var actionCode = e.Action & MotionEventActions.Mask;
switch (actionCode)
{
case MotionEventActions.Down:
_mapView.RaiseMapTouchedDown();
break;
case MotionEventActions.Up:
_mapView.RaiseMapTouchedUp();
break;
}
_tagGestureDetector.OnTouchEvent(e);
_scaleGestureDetector.OnTouchEvent(e);
_rotateGestureDetector.OnTouchEvent(e);
_moveGestureDetector.OnTouchEvent(e);
if (_deltaX != 0 || _deltaY != 0 || // was there movement?
_deltaScale != 1.0 || // was there scale?
_deltaDegrees != 0)
{ // was there rotation?
bool movement = false;
if (this.MapAllowZoom &&
_deltaScale != 1.0)
{
// calculate the scale.
double zoomFactor = this.Map.Projection.ToZoomFactor(this.MapZoom);
zoomFactor = zoomFactor * _deltaScale;
this.MapZoom = (float)this.Map.Projection.ToZoomLevel(zoomFactor);
movement = true;
}
if (this.MapAllowPan)
{
// stop the animation.
this.StopCurrentAnimation();
// recreate the view.
View2D view = this.CreateView();
// calculate the new center in pixels.
double centerXPixels = this.SurfaceWidth / 2.0f - _deltaX;
double centerYPixles = this.SurfaceHeight / 2.0f - _deltaY;
// calculate the new center from the view.
double[] sceneCenter = view.FromViewPort(this.SurfaceWidth, this.SurfaceHeight,
centerXPixels, centerYPixles);
// convert to the projected center.
this.MapCenter = this.Map.Projection.ToGeoCoordinates(sceneCenter[0], sceneCenter[1]);
movement = true;
}
// do the rotation stuff around the new center.
if (this.MapAllowTilt &&
_deltaDegrees != 0)
{
// recreate the view.
View2D view = this.CreateView();
View2D rotatedView = view.RotateAroundCenter((Degree)(-_deltaDegrees));
_mapTilt = (float)((Degree)rotatedView.Rectangle.Angle).Value;
movement = true;
}
_deltaScale = 1;
_deltaDegrees = 0;
_deltaX = 0;
_deltaY = 0;
// notify touch.
if (movement)
{
_mapView.RaiseMapTouched();
_mapView.RaiseMapMove();
this.NotifyMovement();
}
}
}
}
catch (Exception ex)
{
OsmSharp.Logging.Log.TraceEvent("MapViewSurface.OnTouch", TraceEventType.Critical,
string.Format("An unhandled exception occured:{0}", ex.ToString()));
}
return true;
}
/// <summary>
/// Initializes a new instance of the <see cref="OsmSharp.iOS.UI.MapView"/> class.
/// </summary>
/// <param name="mapCenter">Map center.</param>
/// <param name="map">Map.</param>
/// <param name="mapTilt">Map tilt.</param>
/// <param name="defaultZoom">Default zoom.</param>
public MapView(GeoCoordinate mapCenter, Map map, Degree mapTilt, float defaultZoom)
{
this.Initialize(mapCenter, map, mapTilt, defaultZoom);
}
/// <summary>
/// Returns the tile at the given location at the given zoom.
/// </summary>
/// <param name="latitude">The latitude to create the tile around</param>
/// <param name="longitude">The longitude to create the tile around</param>
/// <param name="zoom">The zoom level to create the tile at</param>
public static Tile CreateAroundLocation(double latitude, double longitude, int zoom)
{
int n = (int)System.Math.Floor(System.Math.Pow(2, zoom));
Radian rad = new Degree(latitude);
int x = (int)(((longitude + 180.0f) / 360.0f) * (double)n);
int y = (int)(
(1.0f - (System.Math.Log(System.Math.Tan(rad.Value) + (1.0f / System.Math.Cos(rad.Value))))
/ System.Math.PI) / 2f * (double)n);
return new Tile(x, y, zoom);
}
/// <summary>
/// Raises the touch event.
/// </summary>
/// <param name="v">V.</param>
/// <param name="e">E.</param>
public bool OnTouch(global::Android.Views.View v, MotionEvent e)
{
_tagGestureDetector.OnTouchEvent (e);
_scaleGestureDetector.OnTouchEvent (e);
_rotateGestureDetector.OnTouchEvent (e);
_moveGestureDetector.OnTouchEvent (e);
if (_deltaX != 0 || _deltaY != 0 || // was there movement?
_deltaScale != 1.0 || // was there scale?
_deltaDegrees != 0)
{ // was there rotation?
bool movement = false;
if (this.MapAllowZoom &&
_deltaScale != 1.0)
{
// calculate the scale.
double zoomFactor = this.Map.Projection.ToZoomFactor(this.MapZoom);
zoomFactor = zoomFactor * _deltaScale;
this.MapZoom = (float)this.Map.Projection.ToZoomLevel(zoomFactor);
movement = true;
}
if (this.MapAllowPan)
{
// stop the animation.
this.StopCurrentAnimation();
// recreate the view.
View2D view = this.CreateView();
// calculate the new center in pixels.
double centerXPixels = this.SurfaceWidth / 2.0f - _deltaX;
double centerYPixles = this.SurfaceHeight / 2.0f - _deltaY;
// calculate the new center from the view.
double[] sceneCenter = view.FromViewPort(this.SurfaceWidth, this.SurfaceHeight,
centerXPixels, centerYPixles);
// convert to the projected center.
_mapCenter = this.Map.Projection.ToGeoCoordinates(sceneCenter[0], sceneCenter[1]);
movement = true;
}
// do the rotation stuff around the new center.
if (this.MapAllowTilt &&
_deltaDegrees != 0)
{
// recreate the view.
View2D view = this.CreateView();
View2D rotatedView = view.RotateAroundCenter((Degree)(-_deltaDegrees));
_mapTilt = (float)((Degree)rotatedView.Rectangle.Angle).Value;
movement = true;
}
_deltaScale = 1;
_deltaDegrees = 0;
_deltaX = 0;
_deltaY = 0;
// notify touch.
if (movement)
{
_mapView.RaiseMapTouched();
this.NotifyMovement();
}
}
return true;
}
/// <summary>
/// Rotate the specified rotation.
/// </summary>
/// <param name="rotation">Rotation.</param>
private void Rotate(UIRotationGestureRecognizer rotation)
{
CGRect rect = this.Frame;
if (this.MapAllowTilt &&
rect.Width > 0 && this.Map != null)
{
this.StopCurrentAnimation();
if (rotation.State == UIGestureRecognizerState.Ended)
{
this.NotifyMovementByInvoke();;
_mapViewBefore = null;
// raise map touched event.
this.RaiseMapTouched();
this.RaiseMapTouchedUp();
}
else if (rotation.State == UIGestureRecognizerState.Began)
{
this.RaiseMapTouchedDown();
_mapViewBefore = this.CreateView(rect);
}
else
{
//_mapViewBefore = this.CreateView (_rect);
View2D rotatedView = _mapViewBefore.RotateAroundCenter((Radian)(float)rotation.Rotation);
_mapTilt = (float)((Degree)rotatedView.Rectangle.Angle).Value;
PointF2D sceneCenter = rotatedView.Rectangle.Center;
this.MapCenter = this.Map.Projection.ToGeoCoordinates(
sceneCenter[0], sceneCenter[1]);
this.NotifyMovementByInvoke();
// raise map move event.
this.RaiseMapMove();
}
}
}
/// <summary>
/// Creates a new lambert projection.
/// </summary>
/// <param name="name"></param>
/// <param name="ellipsoid"></param>
/// <param name="standard_parallel_1"></param>
/// <param name="standard_parallel_2"></param>
/// <param name="latitude_origin_1"></param>
/// <param name="longitude_origin_2"></param>
/// <param name="x_origin"></param>
/// <param name="y_origin"></param>
protected LambertProjectionBase(string name,
LambertEllipsoid ellipsoid,
double standard_parallel_1,
double standard_parallel_2,
double latitude_origin_1,
double longitude_origin_2,
double x_origin,
double y_origin)
{
_name = name;
_ellipsoid = ellipsoid;
_standard_parallel_1 = standard_parallel_1;
Radian temp = new Degree(_standard_parallel_1);
_standard_parallel_1_radians = temp.Value;
_standard_parallel_2 = standard_parallel_2;
temp = new Degree(_standard_parallel_2);
_standard_parallel_2_radians = temp.Value;
_latitude_origin = latitude_origin_1;
temp = new Degree(_latitude_origin);
_latitude_origin_radians = temp.Value;
_longitude_origin = longitude_origin_2;
temp = new Degree(_longitude_origin);
_longitude_origin_radians = temp.Value;
_x_origin = x_origin;
_y_origin = y_origin;
// calculate common calculation intermidiates.
_m_1 = (System.Math.Cos(_standard_parallel_1_radians) /
System.Math.Sqrt((1.0 - _ellipsoid.Eccentricity * _ellipsoid.Eccentricity *
System.Math.Pow(System.Math.Sin(_standard_parallel_1_radians), 2.0))));
_m_2 = (System.Math.Cos(_standard_parallel_2_radians) /
System.Math.Sqrt((1 - _ellipsoid.Eccentricity * _ellipsoid.Eccentricity *
System.Math.Pow(System.Math.Sin(_standard_parallel_2_radians), 2.0))));
_t_0 = (System.Math.Tan(System.Math.PI / 4.0 - _latitude_origin_radians / 2.0) /
System.Math.Pow(((1 - _ellipsoid.Eccentricity * System.Math.Sin(_latitude_origin_radians)) /
(1 + _ellipsoid.Eccentricity * System.Math.Sin(_latitude_origin_radians))), _ellipsoid.Eccentricity / 2.0));
_t_1 = (System.Math.Tan(System.Math.PI / 4.0 - _standard_parallel_1_radians / 2.0) /
System.Math.Pow(((1 - _ellipsoid.Eccentricity * System.Math.Sin(_standard_parallel_1_radians)) /
(1 + _ellipsoid.Eccentricity * System.Math.Sin(_standard_parallel_1_radians))), _ellipsoid.Eccentricity / 2.0));
_t_2 = (System.Math.Tan(System.Math.PI / 4.0 - _standard_parallel_2_radians / 2.0) /
System.Math.Pow(((1 - _ellipsoid.Eccentricity * System.Math.Sin(_standard_parallel_2_radians)) /
(1 + _ellipsoid.Eccentricity * System.Math.Sin(_standard_parallel_2_radians))), _ellipsoid.Eccentricity / 2.0));
_n = ((System.Math.Log(_m_1) - System.Math.Log(_m_2))
/ (System.Math.Log(_t_1) - System.Math.Log(_t_2)));
_g = _m_1 / (_n * System.Math.Pow(_t_1, _n));
_r_0 = _ellipsoid.SemiMajorAxis * _g * System.Math.Pow(System.Math.Abs(_t_0), _n);
}
/// <summary>
/// Sets the map view.
/// </summary>
/// <param name="center">Center.</param>
/// <param name="mapTilt">Map tilt.</param>
/// <param name="mapZoom">Map zoom.</param>
void IMapView.SetMapView(GeoCoordinate center, Degree mapTilt, float mapZoom)
{
MapCenter = center;
MapTilt = mapTilt;
MapZoom = mapZoom;
this.NotifyMovementByInvoke();
}
/// <summary>
/// Raises the touch event.
/// </summary>
/// <param name="v">V.</param>
/// <param name="e">E.</param>
public bool OnTouch(global::Android.Views.View v, MotionEvent e)
{
_tagGestureDetector.OnTouchEvent (e);
_scaleGestureDetector.OnTouchEvent (e);
_rotateGestureDetector.OnTouchEvent (e);
_moveGestureDetector.OnTouchEvent (e);
if (_deltaX != 0 || _deltaY != 0 || // was there movement?
_deltaScale != 1.0 || // was there scale?
_deltaDegrees != 0) { // was there rotation?
if (_deltaScale != 1.0) {
// calculate the scale.
double zoomFactor = this.Map.Projection.ToZoomFactor (this.MapZoom);
zoomFactor = zoomFactor * _deltaScale;
this.MapZoom = (float)this.Map.Projection.ToZoomLevel (zoomFactor);
}
// stop the animation.
this.StopCurrentAnimation();
//OsmSharp.Logging.Log.TraceEvent("OsmSharp.Android.UI.MapView", System.Diagnostics.TraceEventType.Information,
// string.Format("OnTouch:[{0},{1}] {2}s {3}d", _deltaX, _deltaY, _deltaScale, _deltaDegrees));
// recreate the view.
View2D view = this.CreateView ();
// calculate the new center in pixels.
double centerXPixels = this.Width / 2.0f - _deltaX;
double centerYPixles = this.Height / 2.0f - _deltaY;
// calculate the new center from the view.
double[] sceneCenter = view.FromViewPort (this.Width, this.Height,
centerXPixels, centerYPixles);
// convert to the projected center.
this.MapCenter = this.Map.Projection.ToGeoCoordinates (sceneCenter [0], sceneCenter [1]);
// do the rotation stuff around the new center.
if (_deltaDegrees != 0) {
View2D rotatedView = view.RotateAroundCenter ((Degree)(-_deltaDegrees));
_mapTilt = (float)((Degree)rotatedView.Rectangle.Angle).Value;
}
_deltaScale = 1;
_deltaDegrees = 0;
_deltaX = 0;
_deltaY = 0;
// notify touch.
_mapView.RaiseMapTouched();
this.NotifyMovement ();
}
return true;
}
/// <summary>
/// Sets the map view.
/// </summary>
/// <param name="center">Center.</param>
/// <param name="mapTilt">Map tilt.</param>
/// <param name="mapZoom">Map zoom.</param>
void IMapView.SetMapView(GeoCoordinate center, Degree mapTilt, float mapZoom)
{
_mapView.SetMapView(center, mapTilt, mapZoom);
}
/// <summary>
/// Sets the map view.
/// </summary>
/// <param name="center">Center.</param>
/// <param name="mapTilt">Map tilt.</param>
/// <param name="mapZoom">Map zoom.</param>
/// <param name="invalidate">If set to <c>true</c> invalidate.</param>
public void SetMapView(GeoCoordinate center, Degree mapTilt, float mapZoom, bool invalidate)
{
_mapCenter = center;
_mapTilt = mapTilt;
this.MapZoom = mapZoom;
if(invalidate) {
(this.Context as Activity).RunOnUiThread(Invalidate);
this.InvalidateMapCenter();
}
}
