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MapPanel longitude coercion

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ClemensFischer 2024-08-29 21:35:58 +02:00
parent 94c3faf805
commit 4b0a0d29fd
9 changed files with 110 additions and 189 deletions
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76
MapControl/Shared/MapPanel.cs
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@ -189,66 +189,53 @@ namespace MapControl
protected Point? GetViewPosition(Location location)
{
var position = parentMap.LocationToView(location);
if (parentMap.MapProjection.Type <= MapProjectionType.NormalCylindrical &&
position.HasValue &&
!InsideViewport(position.Value))
if (parentMap.MapProjection.Type <= MapProjectionType.NormalCylindrical)
{
position = parentMap.LocationToView(
new Location(location.Latitude, parentMap.CoerceLongitude(location.Longitude)));
var longitude = parentMap.CoerceLongitude(location.Longitude);
if (longitude != location.Longitude)
{
location = new Location(location.Latitude, longitude);
}
}
return position;
return parentMap.LocationToView(location);
}
protected ViewRect? GetViewRect(BoundingBox boundingBox)
{
var mapRect = parentMap.MapProjection.BoundingBoxToMap(boundingBox);
if (!mapRect.HasValue)
if (parentMap.MapProjection.Type <= MapProjectionType.NormalCylindrical)
{
return null;
var center = boundingBox.Center;
var longitude = parentMap.CoerceLongitude(center.Longitude);
if (longitude != center.Longitude)
{
boundingBox.Center = new Location(center.Latitude, longitude);
}
}
return GetViewRect(mapRect.Value);
var mapRect = parentMap.MapProjection.BoundingBoxToMap(boundingBox);
if (mapRect.HasValue)
{
return GetViewRect(mapRect.Value);
}
return null;
}
protected ViewRect GetViewRect(Rect mapRect)
{
var transform = parentMap.ViewTransform;
var center = new Point(mapRect.X + mapRect.Width / 2d, mapRect.Y + mapRect.Height / 2d);
var position = parentMap.ViewTransform.MapToView(center);
var projection = parentMap.MapProjection;
if (projection.Type <= MapProjectionType.NormalCylindrical &&
!InsideViewport(position))
{
var location = projection.MapToLocation(center);
if (location != null)
{
var pos = parentMap.LocationToView(
new Location(location.Latitude, parentMap.CoerceLongitude(location.Longitude)));
if (pos.HasValue)
{
position = pos.Value;
}
}
}
var width = mapRect.Width * parentMap.ViewTransform.Scale;
var height = mapRect.Height * parentMap.ViewTransform.Scale;
var position = transform.MapToView(center);
var width = mapRect.Width * transform.Scale;
var height = mapRect.Height * transform.Scale;
var x = position.X - width / 2d;
var y = position.Y - height / 2d;
return new ViewRect(x, y, width, height, parentMap.ViewTransform.Rotation);
}
private bool InsideViewport(Point point)
{
return point.X >= 0d && point.X <= parentMap.ActualWidth
&& point.Y >= 0d && point.Y <= parentMap.ActualHeight;
return new ViewRect(x, y, width, height, transform.Rotation);
}
private void ArrangeChildElement(FrameworkElement element, Size panelSize)
@ -263,7 +250,10 @@ namespace MapControl
if (GetAutoCollapse(element))
{
SetVisible(element, position.HasValue && InsideViewport(position.Value));
SetVisible(element,
position.HasValue &&
position.Value.X >= 0d && position.Value.X <= parentMap.ActualWidth &&
position.Value.Y >= 0d && position.Value.Y <= parentMap.ActualHeight);
}
if (position.HasValue)