ClemensFischer/XAML-Map-Control
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Update MapPanel.cs

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ClemensF 2021-01-13 21:46:23 +01:00
parent 7a9cd455b2
commit e1cd5a64b7
1 changed files with 16 additions and 16 deletions
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32
MapControl/Shared/MapPanel.cs
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@ -114,18 +114,16 @@ namespace MapControl
return null; return null;
} }
var pos = parentMap.LocationToView(location); var position = parentMap.LocationToView(location);
if (parentMap.MapProjection.IsNormalCylindrical && if (parentMap.MapProjection.IsNormalCylindrical && !IsVisible(position))
(pos.X < 0d || pos.X > parentMap.RenderSize.Width ||
pos.Y < 0d || pos.Y > parentMap.RenderSize.Height))
{ {
location = new Location(location.Latitude, parentMap.ConstrainedLongitude(location.Longitude)); location = new Location(location.Latitude, parentMap.ConstrainedLongitude(location.Longitude));
pos = parentMap.LocationToView(location); position = parentMap.LocationToView(location);
} }
return pos; return position;
} }
/// <summary> /// <summary>
@ -142,22 +140,20 @@ namespace MapControl
public ViewRect GetViewRect(Rect rect) public ViewRect GetViewRect(Rect rect)
{ {
var center = new Point(rect.X + rect.Width / 2d, rect.Y + rect.Height / 2d); var center = new Point(rect.X + rect.Width / 2d, rect.Y + rect.Height / 2d);
var pos = parentMap.ViewTransform.MapToView(center); var position = parentMap.ViewTransform.MapToView(center);
if (parentMap.MapProjection.IsNormalCylindrical && if (parentMap.MapProjection.IsNormalCylindrical && !IsVisible(position))
(pos.X < 0d || pos.X > parentMap.RenderSize.Width ||
pos.Y < 0d || pos.Y > parentMap.RenderSize.Height))
{ {
var location = parentMap.MapProjection.MapToLocation(center); var location = parentMap.MapProjection.MapToLocation(center);
location.Longitude = parentMap.ConstrainedLongitude(location.Longitude); location.Longitude = parentMap.ConstrainedLongitude(location.Longitude);
pos = parentMap.LocationToView(location); position = parentMap.LocationToView(location);
} }
var width = rect.Width * parentMap.ViewTransform.Scale; var width = rect.Width * parentMap.ViewTransform.Scale;
var height = rect.Height * parentMap.ViewTransform.Scale; var height = rect.Height * parentMap.ViewTransform.Scale;
var x = pos.X - width / 2d; var x = position.X - width / 2d;
var y = pos.Y - height / 2d; var y = position.Y - height / 2d;
return new ViewRect(x, y, width, height, parentMap.ViewTransform.Rotation); return new ViewRect(x, y, width, height, parentMap.ViewTransform.Rotation);
} }
@ -213,9 +209,7 @@ namespace MapControl
if (GetAutoCollapse(element)) if (GetAutoCollapse(element))
{ {
if (position.HasValue && if (position.HasValue && !IsVisible(position.Value))
(position.Value.X < 0d || position.Value.X > parentMap.RenderSize.Width ||
position.Value.Y < 0d || position.Value.Y > parentMap.RenderSize.Height))
{ {
element.SetValue(VisibilityProperty, Visibility.Collapsed); element.SetValue(VisibilityProperty, Visibility.Collapsed);
} }
@ -248,6 +242,12 @@ namespace MapControl
return finalSize; return finalSize;
} }
private bool IsVisible(Point point)
{
return point.X >= 0d && point.X <= parentMap.RenderSize.Width
&& point.Y >= 0d && point.Y <= parentMap.RenderSize.Height;
}
private static void ArrangeElement(FrameworkElement element, ViewRect rect) private static void ArrangeElement(FrameworkElement element, ViewRect rect)
{ {
element.Width = rect.Width; element.Width = rect.Width;