private void TargetCenterPropertyChanged(Location targetCenter)
{
if (!internalPropertyChange)
{
AdjustCenterProperty(TargetCenterProperty, ref targetCenter);
if (!targetCenter.Equals(Center))
{
if (centerAnimation != null)
{
centerAnimation.Completed -= CenterAnimationCompleted;
}
// animate private CenterPoint property by PointAnimation
centerAnimation = new PointAnimation
{
From = MapProjection.LocationToPoint(Center),
To = MapProjection.LocationToPoint(new Location(
targetCenter.Latitude,
Location.NearestLongitude(targetCenter.Longitude, Center.Longitude))),
Duration = AnimationDuration,
EasingFunction = AnimationEasingFunction
};
centerAnimation.Completed += CenterAnimationCompleted;
this.BeginAnimation(CenterPointProperty, centerAnimation);
}
}
}
private void TargetCenterPropertyChanged(Location targetCenter)
{
if (!internalPropertyChange)
{
AdjustCenterProperty(TargetCenterProperty, ref targetCenter);
if (!targetCenter.Equals(Center))
{
var targetCenterLongitude = MapProjection.IsNormalCylindrical
? Location.NearestLongitude(targetCenter.Longitude, Center.Longitude)
: targetCenter.Longitude;
if (centerAnimation != null)
{
centerAnimation.Completed -= CenterAnimationCompleted;
}
centerAnimation = new PointAnimation
{
From = new Point(Center.Longitude, Center.Latitude),
To = new Point(targetCenterLongitude, targetCenter.Latitude),
Duration = AnimationDuration,
EasingFunction = AnimationEasingFunction
};
centerAnimation.Completed += CenterAnimationCompleted;
this.BeginAnimation(CenterPointProperty, centerAnimation);
}
}
}
private static Point ArrangeElementWithLocation(FrameworkElement element, MapBase parentMap, Location location)
{
var pos = new Point();
var rect = new Rect(pos, element.DesiredSize);
if (parentMap != null)
{
var projection = parentMap.MapProjection;
pos = projection.LocationToViewportPoint(location);
if (projection.IsNormalCylindrical &&
(pos.X < 0d || pos.X > parentMap.RenderSize.Width ||
pos.Y < 0d || pos.Y > parentMap.RenderSize.Height))
{
pos = projection.LocationToViewportPoint(new Location(
location.Latitude,
Location.NearestLongitude(location.Longitude, parentMap.Center.Longitude)));
}
rect.X = pos.X;
rect.Y = pos.Y;
}
switch (element.HorizontalAlignment)
{
case HorizontalAlignment.Center:
rect.X -= rect.Width / 2d;
break;
case HorizontalAlignment.Right:
rect.X -= rect.Width;
break;
default:
break;
}
switch (element.VerticalAlignment)
{
case VerticalAlignment.Center:
rect.Y -= rect.Height / 2d;
break;
case VerticalAlignment.Bottom:
rect.Y -= rect.Height;
break;
default:
break;
}
if (element.UseLayoutRounding)
{
rect.X = Math.Round(rect.X);
rect.Y = Math.Round(rect.Y);
}
element.Arrange(rect);
return(pos);
}
private static void SetBoundingBoxRect(UIElement element, MapBase parentMap, BoundingBox boundingBox)
{
var rotation = 0d;
var viewportPosition = new Point();
if (parentMap != null && boundingBox != null)
{
var projection = parentMap.MapProjection;
var rect = projection.BoundingBoxToRect(boundingBox);
var center = new Point(rect.X + rect.Width / 2d, rect.Y + rect.Height / 2d);
rotation = parentMap.Heading;
viewportPosition = projection.ViewportTransform.Transform(center);
if (viewportPosition.X < 0d || viewportPosition.X > parentMap.RenderSize.Width ||
viewportPosition.Y < 0d || viewportPosition.Y > parentMap.RenderSize.Height)
{
var location = projection.PointToLocation(center);
location.Longitude = Location.NearestLongitude(location.Longitude, parentMap.Center.Longitude);
viewportPosition = projection.LocationToViewportPoint(location);
}
var width = rect.Width * projection.ViewportScale;
var height = rect.Height * projection.ViewportScale;
if (element is FrameworkElement)
{
((FrameworkElement)element).Width = width;
((FrameworkElement)element).Height = height;
}
else
{
element.Arrange(new Rect(-width / 2d, -height / 2d, width, height)); // ???
}
}
var transformGroup = element.RenderTransform as TransformGroup;
RotateTransform rotateTransform;
TranslateTransform translateTransform;
if (transformGroup == null ||
transformGroup.Children.Count != 2 ||
(rotateTransform = transformGroup.Children[0] as RotateTransform) == null ||
(translateTransform = transformGroup.Children[1] as TranslateTransform) == null)
{
transformGroup = new TransformGroup();
rotateTransform = new RotateTransform();
translateTransform = new TranslateTransform();
transformGroup.Children.Add(rotateTransform);
transformGroup.Children.Add(translateTransform);
element.RenderTransform = transformGroup;
element.RenderTransformOrigin = new Point(0.5, 0.5);
}
rotateTransform.Angle = rotation;
translateTransform.X = viewportPosition.X;
translateTransform.Y = viewportPosition.Y;
}
private static void SetViewportPosition(UIElement element, MapBase parentMap, Location location)
{
var viewportPosition = new Point();
if (parentMap != null && location != null)
{
viewportPosition = parentMap.LocationToViewportPoint(location);
if (viewportPosition.X < 0d || viewportPosition.X > parentMap.RenderSize.Width ||
viewportPosition.Y < 0d || viewportPosition.Y > parentMap.RenderSize.Height)
{
viewportPosition = parentMap.LocationToViewportPoint(new Location(
location.Latitude,
Location.NearestLongitude(location.Longitude, parentMap.Center.Longitude)));
}
if ((bool)element.GetValue(UseLayoutRoundingProperty))
{
viewportPosition.X = Math.Round(viewportPosition.X);
viewportPosition.Y = Math.Round(viewportPosition.Y);
}
}
var translateTransform = GetTranslateTransform(element);
translateTransform.X = viewportPosition.X;
translateTransform.Y = viewportPosition.Y;
}
protected virtual void OnViewportChanged(ViewportChangedEventArgs e)
{
double longitudeScale = parentMap.MapProjection.LongitudeScale;
if (e.ProjectionChanged)
{
viewportTransform.Children[1] = parentMap.MapProjection.ViewportTransform;
}
if (e.ProjectionChanged || double.IsNaN(longitudeScale))
{
UpdateData();
}
if (!double.IsNaN(longitudeScale)) // a normal cylindrical projection
{
var longitudeOffset = 0d;
if (Location != null)
{
var viewportPosition = parentMap.MapProjection.LocationToViewportPoint(Location);
if (viewportPosition.X < 0d || viewportPosition.X > parentMap.RenderSize.Width ||
viewportPosition.Y < 0d || viewportPosition.Y > parentMap.RenderSize.Height)
{
var nearestLongitude = Location.NearestLongitude(Location.Longitude, parentMap.Center.Longitude);
longitudeOffset = longitudeScale * (nearestLongitude - Location.Longitude);
}
}
((TranslateTransform)viewportTransform.Children[0]).X = longitudeOffset;
}
}
private static void ArrangeElementWithBoundingBox(FrameworkElement element, MapBase parentMap, BoundingBox boundingBox)
{
var rect = new Rect();
var rotation = 0d;
if (parentMap != null)
{
var projection = parentMap.MapProjection;
rect = projection.BoundingBoxToRect(boundingBox);
var center = new Point(rect.X + rect.Width / 2d, rect.Y + rect.Height / 2d);
var pos = projection.ViewportTransform.Transform(center);
if (projection.IsNormalCylindrical &&
(pos.X < 0d || pos.X > parentMap.RenderSize.Width ||
pos.Y < 0d || pos.Y > parentMap.RenderSize.Height))
{
var location = projection.PointToLocation(center);
location.Longitude = Location.NearestLongitude(location.Longitude, parentMap.Center.Longitude);
pos = projection.LocationToViewportPoint(location);
}
rect.Width *= projection.ViewportScale;
rect.Height *= projection.ViewportScale;
rect.X = pos.X - rect.Width / 2d;
rect.Y = pos.Y - rect.Height / 2d;
if (element.UseLayoutRounding)
{
rect.X = Math.Round(rect.X);
rect.Y = Math.Round(rect.Y);
}
rotation = parentMap.Heading;
}
element.Width = rect.Width;
element.Height = rect.Height;
element.Arrange(rect);
var rotateTransform = element.RenderTransform as RotateTransform;
if (rotateTransform != null)
{
rotateTransform.Angle = rotation;
}
else if (rotation != 0d)
{
rotateTransform = new RotateTransform {
Angle = rotation
};
element.RenderTransform = rotateTransform;
element.RenderTransformOrigin = new Point(0.5, 0.5);
}
}
private void OnViewportChanged(object sender, EventArgs e)
{
var viewportPosition = parentMap.LocationToViewportPoint(Location);
var longitudeOffset = 0d;
if (viewportPosition.X < 0d || viewportPosition.X > parentMap.RenderSize.Width ||
viewportPosition.Y < 0d || viewportPosition.Y > parentMap.RenderSize.Height)
{
longitudeOffset = Location.NearestLongitude(Location.Longitude, parentMap.Center.Longitude) - Location.Longitude;
}
((TranslateTransform)viewportTransform.Children[0]).X = longitudeOffset;
}
private void LocationOrViewportChanged()
{
longitudeOffset = 0d;
if (parentMap != null && parentMap.MapProjection.IsNormalCylindrical && Location != null)
{
var viewPos = LocationToView(Location);
if (viewPos.X < 0d || viewPos.X > parentMap.RenderSize.Width ||
viewPos.Y < 0d || viewPos.Y > parentMap.RenderSize.Height)
{
longitudeOffset = Location.NearestLongitude(Location.Longitude, parentMap.Center.Longitude) - Location.Longitude;
}
}
UpdateData();
}
protected double GetLongitudeOffset()
{
var longitudeOffset = 0d;
if (parentMap.MapProjection.IsContinuous && Location != null)
{
var viewportPosition = LocationToViewportPoint(Location);
if (viewportPosition.X < 0d || viewportPosition.X > parentMap.RenderSize.Width ||
viewportPosition.Y < 0d || viewportPosition.Y > parentMap.RenderSize.Height)
{
var nearestLongitude = Location.NearestLongitude(Location.Longitude, parentMap.Center.Longitude);
longitudeOffset = nearestLongitude - Location.Longitude;
}
}
return(longitudeOffset);
}
private static void SetViewportPosition(UIElement element, MapBase parentMap, Location location)
{
var viewportPosition = new Point();
if (parentMap != null && location != null)
{
viewportPosition = parentMap.MapProjection.LocationToViewportPoint(location);
if (parentMap.MapProjection.IsContinuous &&
(viewportPosition.X < 0d || viewportPosition.X > parentMap.RenderSize.Width ||
viewportPosition.Y < 0d || viewportPosition.Y > parentMap.RenderSize.Height))
{
viewportPosition = parentMap.MapProjection.LocationToViewportPoint(new Location(
location.Latitude,
Location.NearestLongitude(location.Longitude, parentMap.Center.Longitude)));
}
if ((bool)element.GetValue(UseLayoutRoundingProperty))
{
viewportPosition.X = Math.Round(viewportPosition.X);
viewportPosition.Y = Math.Round(viewportPosition.Y);
}
}
var translateTransform = element.RenderTransform as TranslateTransform;
if (translateTransform == null)
{
var transformGroup = element.RenderTransform as TransformGroup;
if (transformGroup == null)
{
translateTransform = new TranslateTransform();
element.RenderTransform = translateTransform;
}
else
{
if (transformGroup.Children.Count > 0)
{
translateTransform = transformGroup.Children[transformGroup.Children.Count - 1] as TranslateTransform;
}
if (translateTransform == null)
{
translateTransform = new TranslateTransform();
transformGroup.Children.Add(translateTransform);
}
}
}
translateTransform.X = viewportPosition.X;
translateTransform.Y = viewportPosition.Y;
}