mirror of
https://github.com/ClemensFischer/XAML-Map-Control.git
synced 2026-01-11 11:10:19 +01:00
Reworked MapGraticule
This commit is contained in:
Clemens
parent
53a291662d
commit
28f65140c4
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@ -28,10 +28,20 @@ namespace MapControl
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{
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private class Label
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{
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public string LatitudeText { get; set; }
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public string LongitudeText { get; set; }
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public Point Position { get; set; }
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public double Rotation { get; set; }
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public Label(string latText, string lonText, double x, double y, double rotation)
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{
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LatitudeText = latText;
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LongitudeText = lonText;
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X = x;
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Y = y;
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Rotation = rotation;
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}
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public string LatitudeText { get; }
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public string LongitudeText { get; }
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public double X { get; }
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public double Y { get; }
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public double Rotation { get; }
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}
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private const double LineInterpolationResolution = 2d;
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@ -96,7 +106,7 @@ namespace MapControl
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labelFormat, hemisphere, seconds / 3600, seconds / 60 % 60, seconds % 60);
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}
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private void AddLabel(ICollection<Label> labels, Point position, Location location, double? rotation = null)
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private void AddLabel(ICollection<Label> labels, Location location, Point position, double? rotation = null)
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{
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if (MapProjection.IsValid(position) &&
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position.X >= 0d && position.X <= ParentMap.RenderSize.Width &&
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@ -104,8 +114,9 @@ namespace MapControl
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{
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if (!rotation.HasValue)
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{
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var pos = ParentMap.LocationToView(new Location(
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location.Latitude, location.Longitude + 10d / PixelPerLongitudeDegree(location)));
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location.Longitude += 10d / PixelPerLongitudeDegree(location);
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var pos = ParentMap.LocationToView(location);
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if (MapProjection.IsValid(pos))
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{
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@ -115,68 +126,32 @@ namespace MapControl
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if (rotation.HasValue)
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{
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labels.Add(new Label
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{
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LatitudeText = GetLabelText(location.Latitude, "NS"),
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LongitudeText = GetLabelText(Location.NormalizeLongitude(location.Longitude), "EW"),
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Position = position,
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Rotation = rotation.Value
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});
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labels.Add(new Label(
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GetLabelText(location.Latitude, "NS"),
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GetLabelText(Location.NormalizeLongitude(location.Longitude), "EW"),
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position.X, position.Y, rotation.Value));
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}
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}
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}
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private void GetLatitudeRange(double lineDistance, ref double minLatitude, ref double maxLatitude)
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private ICollection<Label> DrawGraticule(PathFigureCollection figures)
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{
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var width = ParentMap.RenderSize.Width;
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var height = ParentMap.RenderSize.Height;
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var northPole = ParentMap.LocationToView(new Location(90d, 0d));
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var southPole = ParentMap.LocationToView(new Location(-90d, 0d));
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var labels = new List<Label>();
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if (northPole.X >= 0d && northPole.Y >= 0d && northPole.X <= width && northPole.Y <= height)
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figures.Clear();
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SetLineDistance();
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if (ParentMap.MapProjection.Type <= MapProjectionType.NormalCylindrical)
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{
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maxLatitude = 90d;
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DrawCylindricalGraticule(figures, labels);
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}
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else
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{
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DrawGraticule(figures, labels);
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}
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if (southPole.X >= 0d && southPole.Y >= 0d && southPole.X <= width && southPole.Y <= height)
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{
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minLatitude = -90d;
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}
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if (minLatitude > -90d || maxLatitude < 90d)
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{
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var locations = new Location[]
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{
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ParentMap.ViewToLocation(new Point(0d, 0d)),
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ParentMap.ViewToLocation(new Point(width / 2d, 0d)),
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ParentMap.ViewToLocation(new Point(width, 0d)),
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ParentMap.ViewToLocation(new Point(width, height / 2d)),
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ParentMap.ViewToLocation(new Point(width, height)),
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ParentMap.ViewToLocation(new Point(width / 2d, height)),
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ParentMap.ViewToLocation(new Point(0d, height)),
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ParentMap.ViewToLocation(new Point(0d, height / 2)),
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};
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var latitudes = locations.Where(loc => loc != null).Select(loc => loc.Latitude);
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var south = -90d;
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var north = 90d;
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if (latitudes.Distinct().Count() >= 2)
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{
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south = latitudes.Min();
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north = latitudes.Max();
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}
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if (minLatitude > -90d)
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{
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minLatitude = Math.Max(Math.Floor(south / lineDistance) * lineDistance, -90d);
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}
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if (maxLatitude < 90d)
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{
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maxLatitude = Math.Min(Math.Ceiling(north / lineDistance) * lineDistance, 90d);
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}
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}
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return labels;
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}
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private void DrawCylindricalGraticule(PathFigureCollection figures, ICollection<Label> labels)
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@ -205,16 +180,13 @@ namespace MapControl
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{
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figures.Add(CreateLineFigure(p1, p2));
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}
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}
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for (var lat = latLabelStart; lat <= bounds.North; lat += lineDistance)
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{
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for (var lon = lonLabelStart; lon <= bounds.East; lon += lineDistance)
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for (var lat = latLabelStart; lat <= bounds.North; lat += lineDistance)
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{
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var location = new Location(lat, lon);
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var position = ParentMap.LocationToView(location);
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AddLabel(labels, position, location, ParentMap.ViewTransform.Rotation);
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AddLabel(labels, location, position, ParentMap.ViewTransform.Rotation);
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}
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}
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}
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@ -274,7 +246,7 @@ namespace MapControl
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if (MapProjection.IsValid(position))
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{
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points.Add(position);
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AddLabel(labels, position, location);
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AddLabel(labels, location, position);
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}
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for (int j = 0; j < lonSegments; j++)
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@ -291,7 +263,7 @@ namespace MapControl
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}
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}
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AddLabel(labels, position, location);
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AddLabel(labels, location, position);
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}
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if (points.Count >= 2)
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@ -329,6 +301,59 @@ namespace MapControl
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return visible;
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}
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private void GetLatitudeRange(double lineDistance, ref double minLatitude, ref double maxLatitude)
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{
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var width = ParentMap.RenderSize.Width;
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var height = ParentMap.RenderSize.Height;
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var northPole = ParentMap.LocationToView(new Location(90d, 0d));
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var southPole = ParentMap.LocationToView(new Location(-90d, 0d));
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if (northPole.X >= 0d && northPole.Y >= 0d && northPole.X <= width && northPole.Y <= height)
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{
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maxLatitude = 90d;
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}
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if (southPole.X >= 0d && southPole.Y >= 0d && southPole.X <= width && southPole.Y <= height)
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{
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minLatitude = -90d;
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}
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if (minLatitude > -90d || maxLatitude < 90d)
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{
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var locations = new Location[]
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{
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ParentMap.ViewToLocation(new Point(0d, 0d)),
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ParentMap.ViewToLocation(new Point(width / 2d, 0d)),
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ParentMap.ViewToLocation(new Point(width, 0d)),
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ParentMap.ViewToLocation(new Point(width, height / 2d)),
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ParentMap.ViewToLocation(new Point(width, height)),
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ParentMap.ViewToLocation(new Point(width / 2d, height)),
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ParentMap.ViewToLocation(new Point(0d, height)),
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ParentMap.ViewToLocation(new Point(0d, height / 2)),
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};
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var latitudes = locations.Where(loc => loc != null).Select(loc => loc.Latitude);
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var south = -90d;
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var north = 90d;
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if (latitudes.Distinct().Count() >= 2)
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{
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south = latitudes.Min();
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north = latitudes.Max();
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}
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if (minLatitude > -90d)
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{
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minLatitude = Math.Max(Math.Floor(south / lineDistance) * lineDistance, -90d);
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}
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if (maxLatitude < 90d)
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{
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maxLatitude = Math.Min(Math.Ceiling(north / lineDistance) * lineDistance, 90d);
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}
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}
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}
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private static PathFigure CreateLineFigure(Point p1, Point p2)
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{
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var figure = new PathFigure
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@ -26,49 +26,41 @@ namespace MapControl
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protected override void OnRender(DrawingContext drawingContext)
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{
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var projection = ParentMap?.MapProjection;
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if (projection != null)
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if (ParentMap != null)
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{
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var typeface = new Typeface(FontFamily, FontStyle, FontWeight, FontStretch);
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var pixelsPerDip = VisualTreeHelper.GetDpi(this).PixelsPerDip;
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var pathGeometry = new PathGeometry();
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var labels = new List<Label>();
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SetLineDistance();
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if (projection.Type <= MapProjectionType.NormalCylindrical)
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{
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DrawCylindricalGraticule(pathGeometry.Figures, labels);
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}
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else
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{
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DrawGraticule(pathGeometry.Figures, labels);
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}
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var labels = DrawGraticule(pathGeometry.Figures);
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drawingContext.DrawGeometry(null, CreatePen(), pathGeometry);
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foreach (var label in labels)
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if (labels.Count > 0)
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{
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var latText = new FormattedText(label.LatitudeText,
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CultureInfo.InvariantCulture, FlowDirection.LeftToRight, typeface, FontSize, Foreground, pixelsPerDip);
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var typeface = new Typeface(FontFamily, FontStyle, FontWeight, FontStretch);
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var pixelsPerDip = VisualTreeHelper.GetDpi(this).PixelsPerDip;
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var lonText = new FormattedText(label.LongitudeText,
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CultureInfo.InvariantCulture, FlowDirection.LeftToRight, typeface, FontSize, Foreground, pixelsPerDip);
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foreach (var label in labels)
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{
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var latText = new FormattedText(label.LatitudeText,
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CultureInfo.InvariantCulture, FlowDirection.LeftToRight, typeface, FontSize, Foreground, pixelsPerDip);
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var x = label.Position.X + StrokeThickness / 2d + 2d;
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var y1 = label.Position.Y - StrokeThickness / 2d - latText.Height;
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var y2 = label.Position.Y + StrokeThickness / 2d;
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var lonText = new FormattedText(label.LongitudeText,
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CultureInfo.InvariantCulture, FlowDirection.LeftToRight, typeface, FontSize, Foreground, pixelsPerDip);
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drawingContext.PushTransform(new RotateTransform(label.Rotation, label.Position.X, label.Position.Y));
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drawingContext.DrawText(latText, new Point(x, y1));
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drawingContext.DrawText(lonText, new Point(x, y2));
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drawingContext.Pop();
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var x = label.X + StrokeThickness / 2d + 2d;
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var y1 = label.Y - StrokeThickness / 2d - latText.Height;
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var y2 = label.Y + StrokeThickness / 2d;
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drawingContext.PushTransform(new RotateTransform(label.Rotation, label.X, label.Y));
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drawingContext.DrawText(latText, new Point(x, y1));
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drawingContext.DrawText(lonText, new Point(x, y2));
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drawingContext.Pop();
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}
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}
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}
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}
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private static PathFigure CreatePolylineFigure(ICollection<Point> points)
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private static PathFigure CreatePolylineFigure(IEnumerable<Point> points)
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{
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var figure = new PathFigure
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{
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@ -28,21 +28,7 @@ namespace MapControl
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protected override void OnViewportChanged(ViewportChangedEventArgs e)
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{
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var labels = new List<Label>();
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var pathFigures = ((PathGeometry)path.Data).Figures;
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pathFigures.Clear();
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SetLineDistance();
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if (ParentMap.MapProjection.Type <= MapProjectionType.NormalCylindrical)
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{
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DrawCylindricalGraticule(pathFigures, labels);
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}
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else
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{
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DrawGraticule(pathFigures, labels);
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}
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var labels = DrawGraticule(((PathGeometry)path.Data).Figures);
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if (Children.Count == 0)
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{
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@ -89,7 +75,7 @@ namespace MapControl
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matrix.Translate(StrokeThickness / 2d + 2d, -textBlock.DesiredSize.Height / 2d);
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matrix.Rotate(label.Rotation);
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matrix.Translate(label.Position.X, label.Position.Y);
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matrix.Translate(label.X, label.Y);
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((MatrixTransform)textBlock.RenderTransform).Matrix = matrix;
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@ -104,7 +90,7 @@ namespace MapControl
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base.OnViewportChanged(e);
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}
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private static PathFigure CreatePolylineFigure(ICollection<Point> points)
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private static PathFigure CreatePolylineFigure(IEnumerable<Point> points)
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{
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var figure = new PathFigure
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{
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