/// <summary>
/// Rotate the specified rotation.
/// </summary>
/// <param name="rotation">Rotation.</param>
private void Rotate(UIRotationGestureRecognizer rotation)
{
RectangleF rect = this.Frame;
if (this.MapAllowTilt &&
rect.Width > 0)
{
this.StopCurrentAnimation();
if (rotation.State == UIGestureRecognizerState.Ended)
{
this.NotifyMovementByInvoke();;
_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.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>
/// Rotate the specified rotation.
/// </summary>
/// <param name="rotation">Rotation.</param>
private void Rotate(UIRotationGestureRecognizer rotation)
{
//RectangleF2D rect = _rect;
RectangleF rect = this.Frame;
if (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>
/// 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)
{
_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();
this.NotifyMovement();
}
}
}
}
catch (Exception ex)
{
OsmSharp.Logging.Log.TraceEvent("MapViewSurface.OnTouch", TraceEventType.Critical,
string.Format("An unhandled exception occured:{0}", ex.ToString()));
}
return(true);
}
