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 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 = mapTransform.Transform(Center),
To = mapTransform.Transform(targetCenter, 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))
{
if (centerAnimation != null)
{
centerAnimation.Completed -= CenterAnimationCompleted;
}
centerAnimation = new PointAnimation
{
From = new Point(Center.Longitude, Center.Latitude),
To = new Point(ConstrainedLongitude(targetCenter.Longitude), targetCenter.Latitude),
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))
{
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);
}
}
}
public override Point LocationToMap(Location location)
{
if (location.Equals(Center))
{
return(new Point());
}
GetAzimuthDistance(Center, location, out double azimuth, out double distance);
var mapDistance = Math.Tan(distance / 2d) * 2d * Wgs84EquatorialRadius;
return(new Point(mapDistance * Math.Sin(azimuth), mapDistance * Math.Cos(azimuth)));
}
public override Point LocationToMap(Location location)
{
if (location.Equals(Center))
{
return(new Point());
}
double azimuth, distance;
GetAzimuthDistance(Center, location, out azimuth, out distance);
var mapDistance = Math.Tan(distance / 2d) * 2d * UnitsPerDegree * 180d / Math.PI;
return(new Point(mapDistance * Math.Sin(azimuth), mapDistance * Math.Cos(azimuth)));
}
public override Point LocationToMap(Location location)
{
if (location.Equals(Center))
{
return(new Point());
}
GetAzimuthDistance(Center, location, out double azimuth, out double distance);
var mapDistance = distance < Math.PI / 2d
? Math.Tan(distance) * Wgs84EquatorialRadius
: double.PositiveInfinity;
return(new Point(mapDistance * Math.Sin(azimuth), mapDistance * Math.Cos(azimuth)));
}
public override Point LocationToPoint(Location location)
{
if (location.Equals(ProjectionCenter))
{
return(new Point());
}
double azimuth, distance;
GetAzimuthDistance(ProjectionCenter, location, out azimuth, out distance);
distance *= TrueScale * 180d / Math.PI;
return(new Point(distance * Math.Sin(azimuth), distance * Math.Cos(azimuth)));
}
public override Point LocationToMap(Location location)
{
if (location.Equals(Center))
{
return(new Point());
}
var lat0 = Center.Latitude * Math.PI / 180d;
var lat = location.Latitude * Math.PI / 180d;
var dLon = (location.Longitude - Center.Longitude) * Math.PI / 180d;
return(new Point(
Wgs84EquatorialRadius * Math.Cos(lat) * Math.Sin(dLon),
Wgs84EquatorialRadius * (Math.Cos(lat0) * Math.Sin(lat) - Math.Sin(lat0) * Math.Cos(lat) * Math.Cos(dLon))));
}
public override Point LocationToPoint(Location location)
{
if (location.Equals(ProjectionCenter))
{
return(new Point());
}
double azimuth, distance;
GetAzimuthDistance(ProjectionCenter, location, out azimuth, out distance);
distance *= Wgs84EquatorialRadius;
return(new Point(distance * Math.Sin(azimuth), distance * Math.Cos(azimuth)));
}
public override Point LocationToPoint(Location location)
{
if (location.Equals(projectionCenter))
{
return(new Point());
}
double azimuth, distance;
GetAzimuthDistance(projectionCenter, location, out azimuth, out distance);
var mapDistance = 2d * Wgs84EquatorialRadius * Math.Tan(distance / 2d);
return(new Point(mapDistance * Math.Sin(azimuth), mapDistance * Math.Cos(azimuth)));
}
public override Point LocationToPoint(Location location)
{
if (location.Equals(ProjectionCenter))
{
return(new Point());
}
var lat0 = ProjectionCenter.Latitude * Math.PI / 180d;
var lat = location.Latitude * Math.PI / 180d;
var dLon = (location.Longitude - ProjectionCenter.Longitude) * Math.PI / 180d;
var s = TrueScale * 180d / Math.PI;
return(new Point(
s * Math.Cos(lat) * Math.Sin(dLon),
s * (Math.Cos(lat0) * Math.Sin(lat) - Math.Sin(lat0) * Math.Cos(lat) * Math.Cos(dLon))));
}
public override Point LocationToMap(Location location)
{
if (location.Equals(Center))
{
return(new Point());
}
var lat0 = Center.Latitude * Math.PI / 180d;
var lat = location.Latitude * Math.PI / 180d;
var dLon = (location.Longitude - Center.Longitude) * Math.PI / 180d;
var s = UnitsPerDegree * 180d / Math.PI;
return(new Point(
s * Math.Cos(lat) * Math.Sin(dLon),
s * (Math.Cos(lat0) * Math.Sin(lat) - Math.Sin(lat0) * Math.Cos(lat) * Math.Cos(dLon))));
}
public override Point LocationToPoint(Location location)
{
if (location.Equals(ProjectionCenter))
{
return(new Point());
}
double azimuth, distance;
GetAzimuthDistance(ProjectionCenter, location, out azimuth, out distance);
var mapDistance = distance < Math.PI / 2d
? Math.Tan(distance) * TrueScale * 180d / Math.PI
: double.PositiveInfinity;
return(new Point(mapDistance * Math.Sin(azimuth), mapDistance * Math.Cos(azimuth)));
}
protected override void OnViewportChanged(ViewportChangedEventArgs e)
{
if (path == null)
{
path = new Path
{
Data = new PathGeometry()
};
path.SetBinding(Shape.StrokeProperty,
GetBindingExpression(StrokeProperty)?.ParentBinding ??
new Binding
{
Source = this,
Path = new PropertyPath("Stroke")
});
path.SetBinding(Shape.StrokeThicknessProperty,
GetBindingExpression(StrokeThicknessProperty)?.ParentBinding ??
new Binding
{
Source = this,
Path = new PropertyPath("StrokeThickness")
});
Children.Add(path);
}
var bounds = ParentMap.ViewportTransform.Inverse.TransformBounds(new Rect(new Point(), ParentMap.RenderSize));
var start = ParentMap.MapTransform.Transform(new Point(bounds.X, bounds.Y));
var end = ParentMap.MapTransform.Transform(new Point(bounds.X + bounds.Width, bounds.Y + bounds.Height));
var lineDistance = GetLineDistance();
var labelStart = new Location(
Math.Ceiling(start.Latitude / lineDistance) * lineDistance,
Math.Ceiling(start.Longitude / lineDistance) * lineDistance);
var labelEnd = new Location(
Math.Floor(end.Latitude / lineDistance) * lineDistance,
Math.Floor(end.Longitude / lineDistance) * lineDistance);
var lineStart = new Location(
Math.Min(Math.Max(labelStart.Latitude - lineDistance, -ParentMap.MapTransform.MaxLatitude), ParentMap.MapTransform.MaxLatitude),
labelStart.Longitude - lineDistance);
var lineEnd = new Location(
Math.Min(Math.Max(labelEnd.Latitude + lineDistance, -ParentMap.MapTransform.MaxLatitude), ParentMap.MapTransform.MaxLatitude),
labelEnd.Longitude + lineDistance);
if (!lineStart.Equals(graticuleStart) || !lineEnd.Equals(graticuleEnd))
{
graticuleStart = lineStart;
graticuleEnd = lineEnd;
var geometry = (PathGeometry)path.Data;
geometry.Figures.Clear();
geometry.Transform = ParentMap.ViewportTransform;
for (var lat = labelStart.Latitude; lat <= end.Latitude; lat += lineDistance)
{
var figure = new PathFigure
{
StartPoint = ParentMap.MapTransform.Transform(new Location(lat, lineStart.Longitude)),
IsClosed = false,
IsFilled = false
};
figure.Segments.Add(new LineSegment
{
Point = ParentMap.MapTransform.Transform(new Location(lat, lineEnd.Longitude)),
});
geometry.Figures.Add(figure);
}
for (var lon = labelStart.Longitude; lon <= end.Longitude; lon += lineDistance)
{
var figure = new PathFigure
{
StartPoint = ParentMap.MapTransform.Transform(new Location(lineStart.Latitude, lon)),
IsClosed = false,
IsFilled = false
};
figure.Segments.Add(new LineSegment
{
Point = ParentMap.MapTransform.Transform(new Location(lineEnd.Latitude, lon)),
});
geometry.Figures.Add(figure);
}
var labelFormat = GetLabelFormat(lineDistance);
var childIndex = 1; // 0 for Path
for (var lat = labelStart.Latitude; lat <= end.Latitude; lat += lineDistance)
{
for (var lon = labelStart.Longitude; lon <= end.Longitude; lon += lineDistance)
{
TextBlock label;
if (childIndex < Children.Count)
{
label = (TextBlock)Children[childIndex];
}
else
{
var renderTransform = new TransformGroup();
renderTransform.Children.Add(new TranslateTransform());
renderTransform.Children.Add(ParentMap.RotateTransform);
renderTransform.Children.Add(new TranslateTransform());
label = new TextBlock
{
RenderTransform = renderTransform
};
label.SetBinding(TextBlock.ForegroundProperty,
GetBindingExpression(ForegroundProperty)?.ParentBinding ??
new Binding
{
Source = this,
Path = new PropertyPath("Foreground")
});
Children.Add(label);
}
childIndex++;
if (FontFamily != null)
{
label.FontFamily = FontFamily;
}
label.FontSize = FontSize;
label.FontStyle = FontStyle;
label.FontStretch = FontStretch;
label.FontWeight = FontWeight;
label.Text = GetLabelText(lat, labelFormat, "NS") + "\n" + GetLabelText(Location.NormalizeLongitude(lon), labelFormat, "EW");
label.Tag = new Location(lat, lon);
label.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
var translateTransform = (TranslateTransform)((TransformGroup)label.RenderTransform).Children[0];
translateTransform.X = StrokeThickness / 2d + 2d;
translateTransform.Y = -label.DesiredSize.Height / 2d;
}
}
while (Children.Count > childIndex)
{
Children.RemoveAt(Children.Count - 1);
}
}
// don't use MapPanel.Location because labels may be at more than 180° distance from map center
for (int i = 1; i < Children.Count; i++)
{
var label = (TextBlock)Children[i];
var location = (Location)label.Tag;
var viewportTransform = (TranslateTransform)((TransformGroup)label.RenderTransform).Children[2];
var viewportPosition = ParentMap.LocationToViewportPoint(location);
viewportTransform.X = viewportPosition.X;
viewportTransform.Y = viewportPosition.Y;
}
base.OnViewportChanged(e);
}
protected override void OnViewportChanged()
{
var bounds = ParentMap.ViewportTransform.Inverse.TransformBounds(new Rect(new Point(), ParentMap.RenderSize));
var start = ParentMap.MapTransform.Transform(new Point(bounds.X, bounds.Y));
var end = ParentMap.MapTransform.Transform(new Point(bounds.X + bounds.Width, bounds.Y + bounds.Height));
var minSpacing = MinLineSpacing * 360d / (Math.Pow(2d, ParentMap.ZoomLevel) * 256d);
var spacing = LineSpacings[LineSpacings.Length - 1];
if (spacing >= minSpacing)
{
spacing = LineSpacings.FirstOrDefault(s => s >= minSpacing);
}
var labelStart = new Location(
Math.Ceiling(start.Latitude / spacing) * spacing,
Math.Ceiling(start.Longitude / spacing) * spacing);
var labelEnd = new Location(
Math.Floor(end.Latitude / spacing) * spacing,
Math.Floor(end.Longitude / spacing) * spacing);
var lineStart = new Location(
Math.Min(Math.Max(labelStart.Latitude - spacing, -ParentMap.MapTransform.MaxLatitude), ParentMap.MapTransform.MaxLatitude),
labelStart.Longitude - spacing);
var lineEnd = new Location(
Math.Min(Math.Max(labelEnd.Latitude + spacing, -ParentMap.MapTransform.MaxLatitude), ParentMap.MapTransform.MaxLatitude),
labelEnd.Longitude + spacing);
if (!lineStart.Equals(graticuleStart) || !lineEnd.Equals(graticuleEnd))
{
graticuleStart = lineStart;
graticuleEnd = lineEnd;
var geometry = (PathGeometry)path.Data;
geometry.Figures.Clear();
geometry.Transform = ParentMap.ViewportTransform;
for (var lat = labelStart.Latitude; lat <= end.Latitude; lat += spacing)
{
var figure = new PathFigure
{
StartPoint = ParentMap.MapTransform.Transform(new Location(lat, lineStart.Longitude)),
IsClosed = false,
IsFilled = false
};
figure.Segments.Add(new LineSegment
{
Point = ParentMap.MapTransform.Transform(new Location(lat, lineEnd.Longitude)),
});
geometry.Figures.Add(figure);
}
for (var lon = labelStart.Longitude; lon <= end.Longitude; lon += spacing)
{
var figure = new PathFigure
{
StartPoint = ParentMap.MapTransform.Transform(new Location(lineStart.Latitude, lon)),
IsClosed = false,
IsFilled = false
};
figure.Segments.Add(new LineSegment
{
Point = ParentMap.MapTransform.Transform(new Location(lineEnd.Latitude, lon)),
});
geometry.Figures.Add(figure);
}
var childIndex = 1; // 0 for Path
var format = spacing < 1d ? "{0} {1}°{2:00}'" : "{0} {1}°";
for (var lat = labelStart.Latitude; lat <= end.Latitude; lat += spacing)
{
for (var lon = labelStart.Longitude; lon <= end.Longitude; lon += spacing)
{
TextBlock label;
if (childIndex < Children.Count)
{
label = (TextBlock)Children[childIndex];
}
else
{
var renderTransform = new TransformGroup();
renderTransform.Children.Add(new TranslateTransform());
renderTransform.Children.Add(ParentMap.RotateTransform);
renderTransform.Children.Add(new TranslateTransform());
label = new TextBlock
{
RenderTransform = renderTransform
};
label.SetBinding(TextBlock.ForegroundProperty, new Binding
{
Source = this,
Path = new PropertyPath("Foreground")
});
Children.Add(label);
}
childIndex++;
if (FontFamily != null)
{
label.FontFamily = FontFamily;
}
label.FontSize = FontSize;
label.FontStyle = FontStyle;
label.FontStretch = FontStretch;
label.FontWeight = FontWeight;
label.Text = string.Format("{0}\n{1}", CoordinateString(lat, format, "NS"), CoordinateString(Location.NormalizeLongitude(lon), format, "EW"));
label.Tag = new Location(lat, lon);
label.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
var translateTransform = (TranslateTransform)((TransformGroup)label.RenderTransform).Children[0];
translateTransform.X = StrokeThickness / 2d + 2d;
translateTransform.Y = -label.DesiredSize.Height / 2d;
}
}
while (Children.Count > childIndex)
{
Children.RemoveAt(Children.Count - 1);
}
}
// don't use MapPanel.Location because labels may be at more than 180° distance from map center
for (int i = 1; i < Children.Count; i++)
{
var label = (TextBlock)Children[i];
var location = (Location)label.Tag;
var viewportTransform = (TranslateTransform)((TransformGroup)label.RenderTransform).Children[2];
var viewportPosition = ParentMap.LocationToViewportPoint(location);
viewportTransform.X = viewportPosition.X;
viewportTransform.Y = viewportPosition.Y;
}
base.OnViewportChanged();
}