ClemensFischer/XAML-Map-Control
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ClemensFischer 2026-04-13 17:14:49 +02:00
parent c14377f976
commit 65aba44af6
152 changed files with 11962 additions and 12115 deletions
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71
MapControl/Shared/MetricGrid.cs
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@ -15,53 +15,52 @@ using Avalonia.Layout;
using PathFigureCollection = Avalonia.Media.PathFigures;
#endif
namespace MapControl
namespace MapControl;
/// <summary>
/// Draws a metric grid overlay.
/// </summary>
public partial class MetricGrid : MapGrid
{
/// <summary>
/// Draws a metric grid overlay.
/// </summary>
public partial class MetricGrid : MapGrid
protected override void DrawGrid(PathFigureCollection figures, List<Label> labels)
{
protected override void DrawGrid(PathFigureCollection figures, List<Label> labels)
var minLineDistance = Math.Max(MinLineDistance / ParentMap.ViewTransform.Scale, 1d);
var lineDistance = Math.Pow(10d, Math.Ceiling(Math.Log10(minLineDistance)));
if (lineDistance * 0.5 >= minLineDistance)
{
var minLineDistance = Math.Max(MinLineDistance / ParentMap.ViewTransform.Scale, 1d);
var lineDistance = Math.Pow(10d, Math.Ceiling(Math.Log10(minLineDistance)));
lineDistance *= 0.5;
if (lineDistance * 0.5 >= minLineDistance)
if (lineDistance * 0.4 >= minLineDistance)
{
lineDistance *= 0.5;
if (lineDistance * 0.4 >= minLineDistance)
{
lineDistance *= 0.4;
}
lineDistance *= 0.4;
}
}
var mapRect = ParentMap.ViewTransform.ViewToMapBounds(new Rect(0d, 0d, ParentMap.ActualWidth, ParentMap.ActualHeight));
var minX = Math.Ceiling(mapRect.X / lineDistance) * lineDistance;
var minY = Math.Ceiling(mapRect.Y / lineDistance) * lineDistance;
var mapRect = ParentMap.ViewTransform.ViewToMapBounds(new Rect(0d, 0d, ParentMap.ActualWidth, ParentMap.ActualHeight));
var minX = Math.Ceiling(mapRect.X / lineDistance) * lineDistance;
var minY = Math.Ceiling(mapRect.Y / lineDistance) * lineDistance;
for (var x = minX; x <= mapRect.X + mapRect.Width; x += lineDistance)
{
var p1 = ParentMap.ViewTransform.MapToView(new Point(x, mapRect.Y));
var p2 = ParentMap.ViewTransform.MapToView(new Point(x, mapRect.Y + mapRect.Height));
figures.Add(CreateLineFigure(p1, p2));
for (var x = minX; x <= mapRect.X + mapRect.Width; x += lineDistance)
{
var p1 = ParentMap.ViewTransform.MapToView(new Point(x, mapRect.Y));
var p2 = ParentMap.ViewTransform.MapToView(new Point(x, mapRect.Y + mapRect.Height));
figures.Add(CreateLineFigure(p1, p2));
var text = x.ToString("F0");
labels.Add(new Label(text, p1.X, p1.Y, 0d, HorizontalAlignment.Left, VerticalAlignment.Bottom));
labels.Add(new Label(text, p2.X, p2.Y, 0d, HorizontalAlignment.Left, VerticalAlignment.Top));
}
var text = x.ToString("F0");
labels.Add(new Label(text, p1.X, p1.Y, 0d, HorizontalAlignment.Left, VerticalAlignment.Bottom));
labels.Add(new Label(text, p2.X, p2.Y, 0d, HorizontalAlignment.Left, VerticalAlignment.Top));
}
for (var y = minY; y <= mapRect.Y + mapRect.Height; y += lineDistance)
{
var p1 = ParentMap.ViewTransform.MapToView(new Point(mapRect.X, y));
var p2 = ParentMap.ViewTransform.MapToView(new Point(mapRect.X + mapRect.Width, y));
figures.Add(CreateLineFigure(p1, p2));
for (var y = minY; y <= mapRect.Y + mapRect.Height; y += lineDistance)
{
var p1 = ParentMap.ViewTransform.MapToView(new Point(mapRect.X, y));
var p2 = ParentMap.ViewTransform.MapToView(new Point(mapRect.X + mapRect.Width, y));
figures.Add(CreateLineFigure(p1, p2));
var text = y.ToString("F0");
labels.Add(new Label(text, p1.X, p1.Y, 0d, HorizontalAlignment.Left, VerticalAlignment.Bottom));
labels.Add(new Label(text, p2.X, p2.Y, 0d, HorizontalAlignment.Right, VerticalAlignment.Bottom));
}
var text = y.ToString("F0");
labels.Add(new Label(text, p1.X, p1.Y, 0d, HorizontalAlignment.Left, VerticalAlignment.Bottom));
labels.Add(new Label(text, p2.X, p2.Y, 0d, HorizontalAlignment.Right, VerticalAlignment.Bottom));
}
}
}