mirror of
https://github.com/ClemensFischer/XAML-Map-Control.git
synced 2026-04-05 22:46:58 +00:00
Removed MapProjection.MapToBoundingBox
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ClemensFischer
parent
4fa2470739
commit
5c8d000378
4 changed files with 134 additions and 129 deletions
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@ -34,8 +34,6 @@ namespace MapControl
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public double Rotation => rotation;
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}
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private const double LineInterpolationResolution = 2d;
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public static readonly DependencyProperty MinLineDistanceProperty =
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DependencyPropertyHelper.Register<MapGraticule, double>(nameof(MinLineDistance), 150d);
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@ -75,124 +73,61 @@ namespace MapControl
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set => SetValue(FontSizeProperty, value);
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}
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private double PixelPerDegree => Math.Max(1d, ParentMap.ViewTransform.Scale * MapProjection.Wgs84MeterPerDegree);
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private double lineDistance;
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private string labelFormat;
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private void SetLineDistance()
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{
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var minDistance = MinLineDistance / PixelPerDegree;
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var scale = minDistance < 1d / 60d ? 3600d : minDistance < 1d ? 60d : 1d;
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minDistance *= scale;
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var lineDistances = new double[] { 1d, 2d, 5d, 10d, 15d, 30d, 60d };
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var i = 0;
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while (i < lineDistances.Length - 1 && lineDistances[i] < minDistance)
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{
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i++;
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}
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lineDistance = Math.Min(lineDistances[i] / scale, 30d);
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labelFormat = lineDistance < 1d / 60d ? "{0} {1}°{2:00}'{3:00}\""
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: lineDistance < 1d ? "{0} {1}°{2:00}'" : "{0} {1}°";
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}
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private string GetLabelText(double value, string hemispheres)
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{
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var hemisphere = hemispheres[0];
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if (value < -1e-8) // ~1 mm
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{
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value = -value;
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hemisphere = hemispheres[1];
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}
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var seconds = (int)Math.Round(value * 3600d);
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return string.Format(CultureInfo.InvariantCulture,
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labelFormat, hemisphere, seconds / 3600, seconds / 60 % 60, seconds % 60);
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}
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private void AddLabel(List<Label> labels, double latitude, double longitude, Point position, double? rotation = null)
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{
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if (position.X >= 0d && position.X <= ParentMap.ActualWidth &&
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position.Y >= 0d && position.Y <= ParentMap.ActualHeight)
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{
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if (!rotation.HasValue)
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{
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// Get rotation from second location with same latitude.
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//
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var pos = ParentMap.LocationToView(latitude, longitude + 10d / PixelPerDegree);
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rotation = Math.Atan2(pos.Y - position.Y, pos.X - position.X) * 180d / Math.PI;
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}
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if (rotation.HasValue)
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{
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labels.Add(new Label(
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GetLabelText(latitude, "NS"),
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GetLabelText(Location.NormalizeLongitude(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 List<Label> DrawGraticule(PathFigureCollection figures)
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{
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var labels = new List<Label>();
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figures.Clear();
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SetLineDistance();
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var labels = new List<Label>();
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var lineDistance = GetLineDistance();
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var labelFormat = lineDistance < 1d / 60d ? "{0} {1}°{2:00}'{3:00}\""
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: lineDistance < 1d ? "{0} {1}°{2:00}'" : "{0} {1}°";
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if (ParentMap.MapProjection.IsNormalCylindrical)
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{
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DrawCylindricalGraticule(figures, labels);
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DrawCylindricalGraticule(figures, labels, lineDistance, labelFormat);
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}
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else
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{
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DrawGraticule(figures, labels);
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DrawGraticule(figures, labels, lineDistance, labelFormat);
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}
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return labels;
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}
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private void DrawCylindricalGraticule(PathFigureCollection figures, List<Label> labels)
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private void DrawCylindricalGraticule(PathFigureCollection figures, List<Label> labels, double lineDistance, string labelFormat)
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{
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var boundingBox = ParentMap.ViewToBoundingBox(new Rect(0d, 0d, ParentMap.ActualWidth, ParentMap.ActualHeight));
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var latLabelStart = Math.Ceiling(boundingBox.South / lineDistance) * lineDistance;
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var lonLabelStart = Math.Ceiling(boundingBox.West / lineDistance) * lineDistance;
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var southWest = ParentMap.ViewToLocation(new Point(0d, ParentMap.ActualHeight));
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var northEast = ParentMap.ViewToLocation(new Point(ParentMap.ActualWidth, 0d));
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for (var lat = latLabelStart; lat <= boundingBox.North; lat += lineDistance)
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var latLabelStart = Math.Ceiling(southWest.Latitude / lineDistance) * lineDistance;
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var lonLabelStart = Math.Ceiling(southWest.Longitude / lineDistance) * lineDistance;
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for (var lat = latLabelStart; lat <= northEast.Latitude; lat += lineDistance)
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{
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var p1 = ParentMap.LocationToView(lat, boundingBox.West);
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var p2 = ParentMap.LocationToView(lat, boundingBox.East);
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var p1 = ParentMap.LocationToView(lat, southWest.Longitude);
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var p2 = ParentMap.LocationToView(lat, northEast.Longitude);
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figures.Add(CreateLineFigure(p1, p2));
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}
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for (var lon = lonLabelStart; lon <= boundingBox.East; lon += lineDistance)
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for (var lon = lonLabelStart; lon <= northEast.Longitude; lon += lineDistance)
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{
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var p1 = ParentMap.LocationToView(boundingBox.South, lon);
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var p2 = ParentMap.LocationToView(boundingBox.North, lon);
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var p1 = ParentMap.LocationToView(southWest.Latitude, lon);
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var p2 = ParentMap.LocationToView(northEast.Latitude, lon);
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figures.Add(CreateLineFigure(p1, p2));
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for (var lat = latLabelStart; lat <= boundingBox.North; lat += lineDistance)
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for (var lat = latLabelStart; lat <= northEast.Latitude; lat += lineDistance)
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{
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var position = ParentMap.LocationToView(lat, lon);
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AddLabel(labels, lat, lon, position, ParentMap.ViewTransform.Rotation);
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AddLabel(labels, labelFormat, lat, lon, ParentMap.LocationToView(lat, lon));
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}
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}
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}
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private void DrawGraticule(PathFigureCollection figures, List<Label> labels)
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private void DrawGraticule(PathFigureCollection figures, List<Label> labels, double lineDistance, string labelFormat)
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{
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GetLatitudeRange(lineDistance, out double minLat, out double maxLat);
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var latSegments = (int)Math.Round(Math.Abs(maxLat - minLat) / lineDistance);
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var interpolationCount = Math.Max(1, (int)Math.Ceiling(lineDistance / LineInterpolationResolution));
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var interpolationCount = Math.Max(1, (int)Math.Ceiling(lineDistance));
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var interpolationDistance = lineDistance / interpolationCount;
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var latPoints = latSegments * interpolationCount;
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var centerLon = Math.Round(ParentMap.Center.Longitude / lineDistance) * lineDistance;
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@ -221,21 +156,25 @@ namespace MapControl
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var lat = minLat + i * lineDistance;
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var lon = minLon;
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var points = new List<Point>();
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var position = ParentMap.LocationToView(lat, lon);
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var mapPoint = ParentMap.MapProjection.LocationToMap(lat, lon);
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var position = ParentMap.ViewTransform.MapToView(mapPoint);
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var rotation = -ParentMap.MapProjection.GridConvergence(mapPoint.X, mapPoint.Y);
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points.Add(position);
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AddLabel(labels, lat, lon, position);
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AddLabel(labels, labelFormat, lat, lon, position, rotation);
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for (int j = 0; j < lonSegments; j++)
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{
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for (int k = 1; k <= interpolationCount; k++)
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{
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lon = minLon + j * lineDistance + k * interpolationDistance;
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position = ParentMap.LocationToView(lat, lon);
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mapPoint = ParentMap.MapProjection.LocationToMap(lat, lon);
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position = ParentMap.ViewTransform.MapToView(mapPoint);
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points.Add(position);
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}
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AddLabel(labels, lat, lon, position);
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rotation = -ParentMap.MapProjection.GridConvergence(mapPoint.X, mapPoint.Y);
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AddLabel(labels, labelFormat, lat, lon, position, rotation);
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}
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if (points.Count >= 2)
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@ -262,7 +201,7 @@ namespace MapControl
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points.Add(p);
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}
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if (points.Count >= 2)
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if (visible && points.Count >= 2)
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{
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figures.Add(CreatePolylineFigure(points));
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}
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@ -274,19 +213,31 @@ namespace MapControl
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{
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var width = ParentMap.ActualWidth;
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var height = ParentMap.ActualHeight;
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var locations = new Location[]
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var locations = new List<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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ParentMap.ViewToLocation(new Point(width, height)),
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ParentMap.ViewToLocation(new Point(width / 2d, 0d)),
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ParentMap.ViewToLocation(new Point(width / 2d, height)),
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ParentMap.ViewToLocation(new Point(0d, height / 2d)),
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ParentMap.ViewToLocation(new Point(width, height / 2d)),
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};
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var latitudes = locations.Where(loc => loc != null).Select(loc => loc.Latitude).Distinct();
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var pole = ParentMap.LocationToView(90d, 0d);
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if (pole.X >= 0d && pole.X <= width && pole.Y >= 0d && pole.Y <= height)
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{
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locations.Add(new Location(90d, 0d));
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}
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pole = ParentMap.LocationToView(-90d, 0d);
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if (pole.X >= 0d && pole.X <= width && pole.Y >= 0d && pole.Y <= height)
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{
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locations.Add(new Location(-90d, 0d));
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}
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var latitudes = locations.Select(loc => loc.Latitude).Distinct();
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var south = -90d;
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var north = 90d;
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@ -296,8 +247,71 @@ namespace MapControl
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north = latitudes.Max();
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}
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minLatitude = Math.Max(Math.Floor(south / lineDistance) * lineDistance, -90d);
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maxLatitude = Math.Min(Math.Ceiling(north / lineDistance) * lineDistance, 90d);
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minLatitude = Math.Max(Math.Floor(south / lineDistance - 1d) * lineDistance, -90d);
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maxLatitude = Math.Min(Math.Ceiling(north / lineDistance + 1d) * lineDistance, 90d);
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}
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private double GetLineDistance()
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{
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var pixelPerDegree = ParentMap.ViewTransform.Scale * MapProjection.Wgs84MeterPerDegree;
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if (!ParentMap.MapProjection.IsNormalCylindrical)
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{
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pixelPerDegree *= Math.Cos(ParentMap.Center.Latitude * Math.PI / 180d);
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}
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var minDistance = MinLineDistance / Math.Max(1d, pixelPerDegree);
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var scale = minDistance < 1d / 60d ? 3600d : minDistance < 1d ? 60d : 1d;
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minDistance *= scale;
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var lineDistances = new double[] { 1d, 2d, 5d, 10d, 15d, 30d, 60d };
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var i = 0;
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while (i < lineDistances.Length - 1 && lineDistances[i] < minDistance)
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{
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i++;
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}
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return Math.Min(lineDistances[i] / scale, 60d);
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}
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private void AddLabel(List<Label> labels, string labelFormat, double latitude, double longitude, Point position, double rotation = 0d)
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{
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if (position.X >= 0d && position.X <= ParentMap.ActualWidth &&
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position.Y >= 0d && position.Y <= ParentMap.ActualHeight)
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{
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rotation = (rotation + ParentMap.ViewTransform.Rotation) % 360d;
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if (rotation < -90d)
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{
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rotation += 180d;
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}
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else if (rotation > 90d)
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{
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rotation -= 180d;
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}
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labels.Add(new Label(
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GetLabelText(latitude, labelFormat, "NS"),
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GetLabelText(Location.NormalizeLongitude(longitude), labelFormat, "EW"),
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position.X, position.Y, rotation));
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}
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}
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private static string GetLabelText(double value, string labelFormat, string hemispheres)
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{
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var hemisphere = hemispheres[0];
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if (value < -1e-8) // ~1 mm
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{
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value = -value;
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hemisphere = hemispheres[1];
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}
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var seconds = (int)Math.Round(value * 3600d);
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return string.Format(CultureInfo.InvariantCulture,
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labelFormat, hemisphere, seconds / 3600, seconds / 60 % 60, seconds % 60);
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}
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private static PathFigure CreateLineFigure(Point p1, Point p2)
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