ClemensFischer/XAML-Map-Control
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MapMultiPolygon

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ClemensFischer 2024-07-16 21:29:25 +02:00
parent 5b9ad68c57
commit dbd32361b5
11 changed files with 217 additions and 61 deletions
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55
MapControl/Avalonia/MapPolypoint.Avalonia.cs
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@ -52,32 +52,49 @@ namespace MapControl
protected void UpdateData(IEnumerable<Location> locations, bool closed)
{
var pathFigures = new PathFigures();
var figures = new PathFigures();
if (ParentMap != null && locations != null)
{
var longitudeOffset = GetLongitudeOffset(Location ?? locations.FirstOrDefault());
AddPolylinePoints(pathFigures, locations, longitudeOffset, closed);
AddPolylinePoints(figures, locations, longitudeOffset, closed);
}
SetPathFigures(pathFigures);
SetPathFigures(figures);
}
protected void SetPathFigures(PathFigures pathFigures)
protected void UpdateData(IEnumerable<IEnumerable<Location>> polygons)
{
if (pathFigures.Count == 0)
var figures = new PathFigures();
if (ParentMap != null && polygons != null)
{
var longitudeOffset = GetLongitudeOffset(Location);
foreach (var locations in polygons)
{
AddPolylinePoints(figures, locations, longitudeOffset, true);
}
}
SetPathFigures(figures);
}
protected void SetPathFigures(PathFigures figures)
{
if (figures.Count == 0)
{
// Avalonia Shape seems to ignore PathGeometry with empty Figures collection
pathFigures.Add(new PathFigure { StartPoint = new Point(-1000, -1000) });
figures.Add(new PathFigure { StartPoint = new Point(-1000, -1000) });
}
((PathGeometry)Data).Figures = pathFigures;
((PathGeometry)Data).Figures = figures;
InvalidateGeometry();
}
private void AddPolylinePoints(PathFigures pathFigures, IEnumerable<Location> locations, double longitudeOffset, bool closed)
private void AddPolylinePoints(PathFigures figures, IEnumerable<Location> locations, double longitudeOffset, bool closed)
{
var points = locations
.Select(location => LocationToView(location, longitudeOffset))
@ -86,14 +103,14 @@ namespace MapControl
if (points.Any())
{
var startPoint = points.First();
var polylineSegment = new PolyLineSegment(points.Skip(1));
var minX = startPoint.X;
var maxX = startPoint.X;
var minY = startPoint.Y;
var maxY = startPoint.Y;
var start = points.First();
var polyline = new PolyLineSegment(points.Skip(1));
var minX = start.X;
var maxX = start.X;
var minY = start.Y;
var maxY = start.Y;
foreach (var point in polylineSegment.Points)
foreach (var point in polyline.Points)
{
minX = Math.Min(minX, point.X);
maxX = Math.Max(maxX, point.X);
@ -104,15 +121,15 @@ namespace MapControl
if (maxX >= 0 && minX <= ParentMap.ActualWidth &&
maxY >= 0 && minY <= ParentMap.ActualHeight)
{
var pathFigure = new PathFigure
var figure = new PathFigure
{
StartPoint = startPoint,
StartPoint = start,
IsClosed = closed,
IsFilled = true
};
pathFigure.Segments.Add(polylineSegment);
pathFigures.Add(pathFigure);
figure.Segments.Add(polyline);
figures.Add(figure);
}
}
}