ClemensFischer/XAML-Map-Control
1
0
Fork 0
mirror of https://github.com/ClemensFischer/XAML-Map-Control.git synced 2025-12-06 07:12:04 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Update MapItemsImageLayer.WPF.cs

Browse source
This commit is contained in:
ClemensF 2021-01-24 22:12:46 +01:00
parent c5852c9f9f
commit af23c1e471
1 changed files with 10 additions and 14 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
MapControl/WPF/MapItemsImageLayer.WPF.cs
View file

@ -42,42 +42,38 @@ namespace MapControl
return image;
}
private ImageSource GetImage(MapProjection projection, IEnumerable<IMapDrawingItem> items)
private DrawingImage GetImage(MapProjection projection, IEnumerable<IMapDrawingItem> items)
{
var scale = ParentMap.ViewTransform.Scale;
var rotation = ParentMap.ViewTransform.Rotation;
var mapRect = projection.BoundingBoxToRect(BoundingBox);
var imageRect = new Rect(0, 0, scale * mapRect.Width, scale * mapRect.Height);
var drawings = new DrawingGroup();
foreach (var item in items)
{
var positions = item.Locations.Select(l => projection.LocationToMap(l)).ToList();
var positions = item.Locations.Select(l => projection.LocationToMap(l)).ToArray();
if (positions.Any(p => mapRect.Contains(p)))
{
for (int i = 0; i < positions.Count; i++)
for (int i = 0; i < positions.Length; i++)
{
positions[i] = new Point(scale * (positions[i].X - mapRect.X),
imageRect.Height - scale * (positions[i].Y - mapRect.Y));
positions[i] = new Point(
scale * (positions[i].X - mapRect.X),
scale * (mapRect.Height + mapRect.Y - positions[i].Y));
}
drawings.Children.Add(item.GetDrawing(positions, scale, rotation));
}
}
var drawingBrush = new DrawingBrush
var drawingBrush = new DrawingBrush(drawings)
{
Drawing = drawings,
ViewboxUnits = BrushMappingMode.Absolute,
Viewbox = imageRect,
Viewbox = new Rect(0, 0, scale * mapRect.Width, scale * mapRect.Height),
};
var drawing = new GeometryDrawing
{
Geometry = new RectangleGeometry(imageRect),
Brush = drawingBrush
};
var drawing = new GeometryDrawing(
drawingBrush, null, new RectangleGeometry(drawingBrush.Viewbox));
var image = new DrawingImage(drawing);
image.Freeze();