mirror of
https://github.com/ClemensFischer/XAML-Map-Control.git
synced 2026-05-07 13:37:47 +00:00
File scoped namespaces
This commit is contained in:
ClemensFischer
parent
c14377f976
commit
65aba44af6
152 changed files with 11962 additions and 12115 deletions
|
|
@ -13,431 +13,430 @@ using Avalonia;
|
|||
using Brush = Avalonia.Media.IBrush;
|
||||
#endif
|
||||
|
||||
namespace MapControl
|
||||
namespace MapControl;
|
||||
|
||||
/// <summary>
|
||||
/// The map control. Displays map content provided by one or more layers like MapTileLayer,
|
||||
/// WmtsTileLayer or WmsImageLayer. The visible map area is defined by the Center and
|
||||
/// ZoomLevel properties. The map can be rotated by an angle provided by the Heading property.
|
||||
/// MapBase can contain map overlay child elements like other MapPanels or MapItemsControls.
|
||||
/// </summary>
|
||||
public partial class MapBase : MapPanel
|
||||
{
|
||||
/// <summary>
|
||||
/// The map control. Displays map content provided by one or more layers like MapTileLayer,
|
||||
/// WmtsTileLayer or WmsImageLayer. The visible map area is defined by the Center and
|
||||
/// ZoomLevel properties. The map can be rotated by an angle provided by the Heading property.
|
||||
/// MapBase can contain map overlay child elements like other MapPanels or MapItemsControls.
|
||||
/// </summary>
|
||||
public partial class MapBase : MapPanel
|
||||
public static double ZoomLevelToScale(double zoomLevel)
|
||||
{
|
||||
public static double ZoomLevelToScale(double zoomLevel)
|
||||
return 256d * Math.Pow(2d, zoomLevel) / (360d * MapProjection.Wgs84MeterPerDegree);
|
||||
}
|
||||
|
||||
public static double ScaleToZoomLevel(double scale)
|
||||
{
|
||||
return Math.Log(scale * 360d * MapProjection.Wgs84MeterPerDegree / 256d, 2d);
|
||||
}
|
||||
|
||||
public static TimeSpan ImageFadeDuration { get; set; } = TimeSpan.FromSeconds(0.2);
|
||||
|
||||
public static readonly DependencyProperty AnimationDurationProperty =
|
||||
DependencyPropertyHelper.Register<MapBase, TimeSpan>(nameof(AnimationDuration), TimeSpan.FromSeconds(0.3));
|
||||
|
||||
public static readonly DependencyProperty MapProjectionProperty =
|
||||
DependencyPropertyHelper.Register<MapBase, MapProjection>(nameof(MapProjection), new WebMercatorProjection(),
|
||||
(map, oldValue, newValue) => map.MapProjectionPropertyChanged(newValue));
|
||||
|
||||
private Location transformCenter;
|
||||
private Point viewCenter;
|
||||
private double centerLongitude;
|
||||
private double maxLatitude = 85.05112878; // default WebMercatorProjection
|
||||
private bool internalPropertyChange;
|
||||
|
||||
/// <summary>
|
||||
/// Raised when the current map viewport has changed.
|
||||
/// </summary>
|
||||
public event EventHandler<ViewportChangedEventArgs> ViewportChanged;
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the map foreground Brush.
|
||||
/// </summary>
|
||||
public Brush Foreground
|
||||
{
|
||||
get => (Brush)GetValue(ForegroundProperty);
|
||||
set => SetValue(ForegroundProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the duration of the Center, ZoomLevel and Heading animations.
|
||||
/// The default value is 0.3 seconds.
|
||||
/// </summary>
|
||||
public TimeSpan AnimationDuration
|
||||
{
|
||||
get => (TimeSpan)GetValue(AnimationDurationProperty);
|
||||
set => SetValue(AnimationDurationProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the MapProjection used by the map control.
|
||||
/// </summary>
|
||||
public MapProjection MapProjection
|
||||
{
|
||||
get => (MapProjection)GetValue(MapProjectionProperty);
|
||||
set => SetValue(MapProjectionProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the location of the center point of the map.
|
||||
/// </summary>
|
||||
public Location Center
|
||||
{
|
||||
get => (Location)GetValue(CenterProperty);
|
||||
set => SetValue(CenterProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the target value of a Center animation.
|
||||
/// </summary>
|
||||
public Location TargetCenter
|
||||
{
|
||||
get => (Location)GetValue(TargetCenterProperty);
|
||||
set => SetValue(TargetCenterProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the minimum value of the ZoomLevel and TargetZoomLevel properties.
|
||||
/// Must not be less than zero or greater than MaxZoomLevel. The default value is 1.
|
||||
/// </summary>
|
||||
public double MinZoomLevel
|
||||
{
|
||||
get => (double)GetValue(MinZoomLevelProperty);
|
||||
set => SetValue(MinZoomLevelProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the maximum value of the ZoomLevel and TargetZoomLevel properties.
|
||||
/// Must not be less than MinZoomLevel. The default value is 20.
|
||||
/// </summary>
|
||||
public double MaxZoomLevel
|
||||
{
|
||||
get => (double)GetValue(MaxZoomLevelProperty);
|
||||
set => SetValue(MaxZoomLevelProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the map zoom level.
|
||||
/// </summary>
|
||||
public double ZoomLevel
|
||||
{
|
||||
get => (double)GetValue(ZoomLevelProperty);
|
||||
set => SetValue(ZoomLevelProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the target value of a ZoomLevel animation.
|
||||
/// </summary>
|
||||
public double TargetZoomLevel
|
||||
{
|
||||
get => (double)GetValue(TargetZoomLevelProperty);
|
||||
set => SetValue(TargetZoomLevelProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the map heading, a counter-clockwise rotation angle in degrees.
|
||||
/// </summary>
|
||||
public double Heading
|
||||
{
|
||||
get => (double)GetValue(HeadingProperty);
|
||||
set => SetValue(HeadingProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the target value of a Heading animation.
|
||||
/// </summary>
|
||||
public double TargetHeading
|
||||
{
|
||||
get => (double)GetValue(TargetHeadingProperty);
|
||||
set => SetValue(TargetHeadingProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the ViewTransform instance that is used to transform between
|
||||
/// projected map coordinates and view coordinates.
|
||||
/// </summary>
|
||||
public ViewTransform ViewTransform { get; } = new ViewTransform();
|
||||
|
||||
/// <summary>
|
||||
/// Gets a transform Matrix from meters to view coordinates for scaling and rotating
|
||||
/// at the specified geographic coordinates.
|
||||
/// </summary>
|
||||
public Matrix GetMapToViewTransform(double latitude, double longitude)
|
||||
{
|
||||
var transform = MapProjection.RelativeTransform(latitude, longitude);
|
||||
transform.Scale(ViewTransform.Scale, ViewTransform.Scale);
|
||||
transform.Rotate(ViewTransform.Rotation);
|
||||
return transform;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets a transform Matrix from meters to view coordinates for scaling and rotating
|
||||
/// at the specified Location.
|
||||
/// </summary>
|
||||
public Matrix GetMapToViewTransform(Location location) => GetMapToViewTransform(location.Latitude, location.Longitude);
|
||||
|
||||
/// <summary>
|
||||
/// Transforms geographic coordinates to a Point in view coordinates.
|
||||
/// </summary>
|
||||
public Point LocationToView(double latitude, double longitude) => ViewTransform.MapToView(MapProjection.LocationToMap(latitude, longitude));
|
||||
|
||||
/// <summary>
|
||||
/// Transforms a Location in geographic coordinates to a Point in view coordinates.
|
||||
/// </summary>
|
||||
public Point LocationToView(Location location) => LocationToView(location.Latitude, location.Longitude);
|
||||
|
||||
/// <summary>
|
||||
/// Transforms a Point in view coordinates to a Location in geographic coordinates.
|
||||
/// </summary>
|
||||
public Location ViewToLocation(Point point) => MapProjection.MapToLocation(ViewTransform.ViewToMap(point));
|
||||
|
||||
/// <summary>
|
||||
/// Sets a temporary center point in view coordinates for scaling and rotation transformations.
|
||||
/// This center point is automatically reset when the Center property is set by application code
|
||||
/// or by the methods TranslateMap, TransformMap, ZoomMap and ZoomToBounds.
|
||||
/// </summary>
|
||||
public void SetTransformCenter(Point center)
|
||||
{
|
||||
viewCenter = center;
|
||||
transformCenter = ViewToLocation(center);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Resets the temporary transform center point set by SetTransformCenter.
|
||||
/// </summary>
|
||||
public void ResetTransformCenter()
|
||||
{
|
||||
viewCenter = new Point(ActualWidth / 2d, ActualHeight / 2d);
|
||||
transformCenter = null;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Changes the Center property according to the specified translation in view coordinates.
|
||||
/// </summary>
|
||||
public void TranslateMap(Point translation)
|
||||
{
|
||||
if (translation.X != 0d || translation.Y != 0d)
|
||||
{
|
||||
return 256d * Math.Pow(2d, zoomLevel) / (360d * MapProjection.Wgs84MeterPerDegree);
|
||||
Center = ViewToLocation(new Point(viewCenter.X - translation.X, viewCenter.Y - translation.Y));
|
||||
}
|
||||
}
|
||||
|
||||
public static double ScaleToZoomLevel(double scale)
|
||||
/// <summary>
|
||||
/// Changes the Center, Heading and ZoomLevel properties according to the specified
|
||||
/// view coordinate translation, rotation and scale delta values. Rotation and scaling
|
||||
/// is performed relative to the specified center point in view coordinates.
|
||||
/// </summary>
|
||||
public void TransformMap(Point center, Point translation, double rotation, double scale)
|
||||
{
|
||||
if (rotation == 0d && scale == 1d)
|
||||
{
|
||||
return Math.Log(scale * 360d * MapProjection.Wgs84MeterPerDegree / 256d, 2d);
|
||||
TranslateMap(translation);
|
||||
}
|
||||
|
||||
public static TimeSpan ImageFadeDuration { get; set; } = TimeSpan.FromSeconds(0.2);
|
||||
|
||||
public static readonly DependencyProperty AnimationDurationProperty =
|
||||
DependencyPropertyHelper.Register<MapBase, TimeSpan>(nameof(AnimationDuration), TimeSpan.FromSeconds(0.3));
|
||||
|
||||
public static readonly DependencyProperty MapProjectionProperty =
|
||||
DependencyPropertyHelper.Register<MapBase, MapProjection>(nameof(MapProjection), new WebMercatorProjection(),
|
||||
(map, oldValue, newValue) => map.MapProjectionPropertyChanged(newValue));
|
||||
|
||||
private Location transformCenter;
|
||||
private Point viewCenter;
|
||||
private double centerLongitude;
|
||||
private double maxLatitude = 85.05112878; // default WebMercatorProjection
|
||||
private bool internalPropertyChange;
|
||||
|
||||
/// <summary>
|
||||
/// Raised when the current map viewport has changed.
|
||||
/// </summary>
|
||||
public event EventHandler<ViewportChangedEventArgs> ViewportChanged;
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the map foreground Brush.
|
||||
/// </summary>
|
||||
public Brush Foreground
|
||||
else
|
||||
{
|
||||
get => (Brush)GetValue(ForegroundProperty);
|
||||
set => SetValue(ForegroundProperty, value);
|
||||
}
|
||||
SetTransformCenter(center);
|
||||
viewCenter = new Point(viewCenter.X + translation.X, viewCenter.Y + translation.Y);
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the duration of the Center, ZoomLevel and Heading animations.
|
||||
/// The default value is 0.3 seconds.
|
||||
/// </summary>
|
||||
public TimeSpan AnimationDuration
|
||||
{
|
||||
get => (TimeSpan)GetValue(AnimationDurationProperty);
|
||||
set => SetValue(AnimationDurationProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the MapProjection used by the map control.
|
||||
/// </summary>
|
||||
public MapProjection MapProjection
|
||||
{
|
||||
get => (MapProjection)GetValue(MapProjectionProperty);
|
||||
set => SetValue(MapProjectionProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the location of the center point of the map.
|
||||
/// </summary>
|
||||
public Location Center
|
||||
{
|
||||
get => (Location)GetValue(CenterProperty);
|
||||
set => SetValue(CenterProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the target value of a Center animation.
|
||||
/// </summary>
|
||||
public Location TargetCenter
|
||||
{
|
||||
get => (Location)GetValue(TargetCenterProperty);
|
||||
set => SetValue(TargetCenterProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the minimum value of the ZoomLevel and TargetZoomLevel properties.
|
||||
/// Must not be less than zero or greater than MaxZoomLevel. The default value is 1.
|
||||
/// </summary>
|
||||
public double MinZoomLevel
|
||||
{
|
||||
get => (double)GetValue(MinZoomLevelProperty);
|
||||
set => SetValue(MinZoomLevelProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the maximum value of the ZoomLevel and TargetZoomLevel properties.
|
||||
/// Must not be less than MinZoomLevel. The default value is 20.
|
||||
/// </summary>
|
||||
public double MaxZoomLevel
|
||||
{
|
||||
get => (double)GetValue(MaxZoomLevelProperty);
|
||||
set => SetValue(MaxZoomLevelProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the map zoom level.
|
||||
/// </summary>
|
||||
public double ZoomLevel
|
||||
{
|
||||
get => (double)GetValue(ZoomLevelProperty);
|
||||
set => SetValue(ZoomLevelProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the target value of a ZoomLevel animation.
|
||||
/// </summary>
|
||||
public double TargetZoomLevel
|
||||
{
|
||||
get => (double)GetValue(TargetZoomLevelProperty);
|
||||
set => SetValue(TargetZoomLevelProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the map heading, a counter-clockwise rotation angle in degrees.
|
||||
/// </summary>
|
||||
public double Heading
|
||||
{
|
||||
get => (double)GetValue(HeadingProperty);
|
||||
set => SetValue(HeadingProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets or sets the target value of a Heading animation.
|
||||
/// </summary>
|
||||
public double TargetHeading
|
||||
{
|
||||
get => (double)GetValue(TargetHeadingProperty);
|
||||
set => SetValue(TargetHeadingProperty, value);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets the ViewTransform instance that is used to transform between
|
||||
/// projected map coordinates and view coordinates.
|
||||
/// </summary>
|
||||
public ViewTransform ViewTransform { get; } = new ViewTransform();
|
||||
|
||||
/// <summary>
|
||||
/// Gets a transform Matrix from meters to view coordinates for scaling and rotating
|
||||
/// at the specified geographic coordinates.
|
||||
/// </summary>
|
||||
public Matrix GetMapToViewTransform(double latitude, double longitude)
|
||||
{
|
||||
var transform = MapProjection.RelativeTransform(latitude, longitude);
|
||||
transform.Scale(ViewTransform.Scale, ViewTransform.Scale);
|
||||
transform.Rotate(ViewTransform.Rotation);
|
||||
return transform;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Gets a transform Matrix from meters to view coordinates for scaling and rotating
|
||||
/// at the specified Location.
|
||||
/// </summary>
|
||||
public Matrix GetMapToViewTransform(Location location) => GetMapToViewTransform(location.Latitude, location.Longitude);
|
||||
|
||||
/// <summary>
|
||||
/// Transforms geographic coordinates to a Point in view coordinates.
|
||||
/// </summary>
|
||||
public Point LocationToView(double latitude, double longitude) => ViewTransform.MapToView(MapProjection.LocationToMap(latitude, longitude));
|
||||
|
||||
/// <summary>
|
||||
/// Transforms a Location in geographic coordinates to a Point in view coordinates.
|
||||
/// </summary>
|
||||
public Point LocationToView(Location location) => LocationToView(location.Latitude, location.Longitude);
|
||||
|
||||
/// <summary>
|
||||
/// Transforms a Point in view coordinates to a Location in geographic coordinates.
|
||||
/// </summary>
|
||||
public Location ViewToLocation(Point point) => MapProjection.MapToLocation(ViewTransform.ViewToMap(point));
|
||||
|
||||
/// <summary>
|
||||
/// Sets a temporary center point in view coordinates for scaling and rotation transformations.
|
||||
/// This center point is automatically reset when the Center property is set by application code
|
||||
/// or by the methods TranslateMap, TransformMap, ZoomMap and ZoomToBounds.
|
||||
/// </summary>
|
||||
public void SetTransformCenter(Point center)
|
||||
{
|
||||
viewCenter = center;
|
||||
transformCenter = ViewToLocation(center);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Resets the temporary transform center point set by SetTransformCenter.
|
||||
/// </summary>
|
||||
public void ResetTransformCenter()
|
||||
{
|
||||
viewCenter = new Point(ActualWidth / 2d, ActualHeight / 2d);
|
||||
transformCenter = null;
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Changes the Center property according to the specified translation in view coordinates.
|
||||
/// </summary>
|
||||
public void TranslateMap(Point translation)
|
||||
{
|
||||
if (translation.X != 0d || translation.Y != 0d)
|
||||
if (rotation != 0d)
|
||||
{
|
||||
Center = ViewToLocation(new Point(viewCenter.X - translation.X, viewCenter.Y - translation.Y));
|
||||
var heading = CoerceHeadingProperty(Heading - rotation);
|
||||
SetValueInternal(HeadingProperty, heading);
|
||||
SetValueInternal(TargetHeadingProperty, heading);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Changes the Center, Heading and ZoomLevel properties according to the specified
|
||||
/// view coordinate translation, rotation and scale delta values. Rotation and scaling
|
||||
/// is performed relative to the specified center point in view coordinates.
|
||||
/// </summary>
|
||||
public void TransformMap(Point center, Point translation, double rotation, double scale)
|
||||
{
|
||||
if (rotation == 0d && scale == 1d)
|
||||
if (scale != 1d)
|
||||
{
|
||||
TranslateMap(translation);
|
||||
var zoomLevel = CoerceZoomLevelProperty(ZoomLevel + Math.Log(scale, 2d));
|
||||
SetValueInternal(ZoomLevelProperty, zoomLevel);
|
||||
SetValueInternal(TargetZoomLevelProperty, zoomLevel);
|
||||
}
|
||||
else
|
||||
|
||||
UpdateTransform(true);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Sets the ZoomLevel or TargetZoomLevel property while retaining
|
||||
/// the specified center point in view coordinates.
|
||||
/// </summary>
|
||||
public void ZoomMap(Point center, double zoomLevel, bool animated = true)
|
||||
{
|
||||
zoomLevel = CoerceZoomLevelProperty(zoomLevel);
|
||||
|
||||
if (animated || zoomLevelAnimation != null)
|
||||
{
|
||||
if (TargetZoomLevel != zoomLevel)
|
||||
{
|
||||
SetTransformCenter(center);
|
||||
viewCenter = new Point(viewCenter.X + translation.X, viewCenter.Y + translation.Y);
|
||||
|
||||
if (rotation != 0d)
|
||||
{
|
||||
var heading = CoerceHeadingProperty(Heading - rotation);
|
||||
SetValueInternal(HeadingProperty, heading);
|
||||
SetValueInternal(TargetHeadingProperty, heading);
|
||||
}
|
||||
|
||||
if (scale != 1d)
|
||||
{
|
||||
var zoomLevel = CoerceZoomLevelProperty(ZoomLevel + Math.Log(scale, 2d));
|
||||
SetValueInternal(ZoomLevelProperty, zoomLevel);
|
||||
SetValueInternal(TargetZoomLevelProperty, zoomLevel);
|
||||
}
|
||||
|
||||
TargetZoomLevel = zoomLevel;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
if (ZoomLevel != zoomLevel)
|
||||
{
|
||||
SetTransformCenter(center);
|
||||
SetValueInternal(ZoomLevelProperty, zoomLevel);
|
||||
SetValueInternal(TargetZoomLevelProperty, zoomLevel);
|
||||
UpdateTransform(true);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Sets the ZoomLevel or TargetZoomLevel property while retaining
|
||||
/// the specified center point in view coordinates.
|
||||
/// </summary>
|
||||
public void ZoomMap(Point center, double zoomLevel, bool animated = true)
|
||||
/// <summary>
|
||||
/// Sets the TargetZoomLevel and TargetCenter properties so that the specified BoundingBox
|
||||
/// fits into the current view. The TargetHeading property is set to zero.
|
||||
/// </summary>
|
||||
public void ZoomToBounds(BoundingBox bounds)
|
||||
{
|
||||
(var rect, var _) = MapProjection.BoundingBoxToMap(bounds);
|
||||
var scale = Math.Min(ActualWidth / rect.Width, ActualHeight / rect.Height);
|
||||
TargetZoomLevel = ScaleToZoomLevel(scale);
|
||||
TargetCenter = new Location((bounds.South + bounds.North) / 2d, (bounds.West + bounds.East) / 2d);
|
||||
TargetHeading = 0d;
|
||||
}
|
||||
|
||||
internal bool InsideViewBounds(Point point)
|
||||
{
|
||||
return point.X >= 0d && point.Y >= 0d && point.X <= ActualWidth && point.Y <= ActualHeight;
|
||||
}
|
||||
|
||||
internal double NearestLongitude(double longitude)
|
||||
{
|
||||
longitude = Location.NormalizeLongitude(longitude);
|
||||
|
||||
var offset = longitude - Center.Longitude;
|
||||
|
||||
if (offset > 180d)
|
||||
{
|
||||
zoomLevel = CoerceZoomLevelProperty(zoomLevel);
|
||||
longitude = Center.Longitude + (offset % 360d) - 360d;
|
||||
}
|
||||
else if (offset < -180d)
|
||||
{
|
||||
longitude = Center.Longitude + (offset % 360d) + 360d;
|
||||
}
|
||||
|
||||
if (animated || zoomLevelAnimation != null)
|
||||
return longitude;
|
||||
}
|
||||
|
||||
private Location CoerceCenterProperty(Location center)
|
||||
{
|
||||
if (center == null)
|
||||
{
|
||||
center = new Location(0d, 0d);
|
||||
}
|
||||
else if (center.Latitude < -maxLatitude || center.Latitude > maxLatitude ||
|
||||
center.Longitude < -180d || center.Longitude > 180d)
|
||||
{
|
||||
center = new Location(
|
||||
Math.Min(Math.Max(center.Latitude, -maxLatitude), maxLatitude),
|
||||
Location.NormalizeLongitude(center.Longitude));
|
||||
}
|
||||
|
||||
return center;
|
||||
}
|
||||
|
||||
private double CoerceMinZoomLevelProperty(double minZoomLevel)
|
||||
{
|
||||
return Math.Min(Math.Max(minZoomLevel, 0d), MaxZoomLevel);
|
||||
}
|
||||
|
||||
private double CoerceMaxZoomLevelProperty(double maxZoomLevel)
|
||||
{
|
||||
return Math.Max(maxZoomLevel, MinZoomLevel);
|
||||
}
|
||||
|
||||
private double CoerceZoomLevelProperty(double zoomLevel)
|
||||
{
|
||||
return Math.Min(Math.Max(zoomLevel, MinZoomLevel), MaxZoomLevel);
|
||||
}
|
||||
|
||||
private double CoerceHeadingProperty(double heading)
|
||||
{
|
||||
return ((heading % 360d) + 360d) % 360d;
|
||||
}
|
||||
|
||||
private void SetValueInternal(DependencyProperty property, object value)
|
||||
{
|
||||
internalPropertyChange = true;
|
||||
SetValue(property, value);
|
||||
internalPropertyChange = false;
|
||||
}
|
||||
|
||||
private void MapProjectionPropertyChanged(MapProjection projection)
|
||||
{
|
||||
maxLatitude = 90d;
|
||||
|
||||
if (projection.IsNormalCylindrical)
|
||||
{
|
||||
maxLatitude = projection.MapToLocation(0d, 180d * MapProjection.Wgs84MeterPerDegree).Latitude;
|
||||
Center = CoerceCenterProperty(Center);
|
||||
}
|
||||
|
||||
ResetTransformCenter();
|
||||
UpdateTransform(false, true);
|
||||
}
|
||||
|
||||
private void UpdateTransform(bool resetTransformCenter = false, bool projectionChanged = false)
|
||||
{
|
||||
var transformCenterChanged = false;
|
||||
var viewScale = ZoomLevelToScale(ZoomLevel);
|
||||
var mapCenter = MapProjection.LocationToMap(transformCenter ?? Center);
|
||||
|
||||
ViewTransform.SetTransform(mapCenter, viewCenter, viewScale, -Heading);
|
||||
|
||||
if (transformCenter != null)
|
||||
{
|
||||
var center = ViewToLocation(new Point(ActualWidth / 2d, ActualHeight / 2d));
|
||||
var latitude = center.Latitude;
|
||||
var longitude = Location.NormalizeLongitude(center.Longitude);
|
||||
|
||||
if (latitude < -maxLatitude || latitude > maxLatitude)
|
||||
{
|
||||
if (TargetZoomLevel != zoomLevel)
|
||||
{
|
||||
SetTransformCenter(center);
|
||||
TargetZoomLevel = zoomLevel;
|
||||
}
|
||||
latitude = Math.Min(Math.Max(latitude, -maxLatitude), maxLatitude);
|
||||
resetTransformCenter = true;
|
||||
}
|
||||
else
|
||||
|
||||
if (!center.Equals(latitude, longitude))
|
||||
{
|
||||
if (ZoomLevel != zoomLevel)
|
||||
{
|
||||
SetTransformCenter(center);
|
||||
SetValueInternal(ZoomLevelProperty, zoomLevel);
|
||||
SetValueInternal(TargetZoomLevelProperty, zoomLevel);
|
||||
UpdateTransform(true);
|
||||
}
|
||||
center = new Location(latitude, longitude);
|
||||
}
|
||||
|
||||
SetValueInternal(CenterProperty, center);
|
||||
|
||||
if (centerAnimation == null)
|
||||
{
|
||||
SetValueInternal(TargetCenterProperty, center);
|
||||
}
|
||||
|
||||
if (resetTransformCenter)
|
||||
{
|
||||
// Check if transform center has moved across 180° longitude.
|
||||
//
|
||||
transformCenterChanged = Math.Abs(center.Longitude - transformCenter.Longitude) > 180d;
|
||||
ResetTransformCenter();
|
||||
mapCenter = MapProjection.LocationToMap(center);
|
||||
ViewTransform.SetTransform(mapCenter, viewCenter, viewScale, -Heading);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Sets the TargetZoomLevel and TargetCenter properties so that the specified BoundingBox
|
||||
/// fits into the current view. The TargetHeading property is set to zero.
|
||||
/// </summary>
|
||||
public void ZoomToBounds(BoundingBox bounds)
|
||||
{
|
||||
(var rect, var _) = MapProjection.BoundingBoxToMap(bounds);
|
||||
var scale = Math.Min(ActualWidth / rect.Width, ActualHeight / rect.Height);
|
||||
TargetZoomLevel = ScaleToZoomLevel(scale);
|
||||
TargetCenter = new Location((bounds.South + bounds.North) / 2d, (bounds.West + bounds.East) / 2d);
|
||||
TargetHeading = 0d;
|
||||
}
|
||||
ViewScale = ViewTransform.Scale;
|
||||
|
||||
internal bool InsideViewBounds(Point point)
|
||||
{
|
||||
return point.X >= 0d && point.Y >= 0d && point.X <= ActualWidth && point.Y <= ActualHeight;
|
||||
}
|
||||
// Check if view center has moved across 180° longitude.
|
||||
//
|
||||
transformCenterChanged = transformCenterChanged || Math.Abs(Center.Longitude - centerLongitude) > 180d;
|
||||
centerLongitude = Center.Longitude;
|
||||
|
||||
internal double NearestLongitude(double longitude)
|
||||
{
|
||||
longitude = Location.NormalizeLongitude(longitude);
|
||||
|
||||
var offset = longitude - Center.Longitude;
|
||||
OnViewportChanged(new ViewportChangedEventArgs(projectionChanged, transformCenterChanged));
|
||||
}
|
||||
|
||||
if (offset > 180d)
|
||||
{
|
||||
longitude = Center.Longitude + (offset % 360d) - 360d;
|
||||
}
|
||||
else if (offset < -180d)
|
||||
{
|
||||
longitude = Center.Longitude + (offset % 360d) + 360d;
|
||||
}
|
||||
|
||||
return longitude;
|
||||
}
|
||||
|
||||
private Location CoerceCenterProperty(Location center)
|
||||
{
|
||||
if (center == null)
|
||||
{
|
||||
center = new Location(0d, 0d);
|
||||
}
|
||||
else if (center.Latitude < -maxLatitude || center.Latitude > maxLatitude ||
|
||||
center.Longitude < -180d || center.Longitude > 180d)
|
||||
{
|
||||
center = new Location(
|
||||
Math.Min(Math.Max(center.Latitude, -maxLatitude), maxLatitude),
|
||||
Location.NormalizeLongitude(center.Longitude));
|
||||
}
|
||||
|
||||
return center;
|
||||
}
|
||||
|
||||
private double CoerceMinZoomLevelProperty(double minZoomLevel)
|
||||
{
|
||||
return Math.Min(Math.Max(minZoomLevel, 0d), MaxZoomLevel);
|
||||
}
|
||||
|
||||
private double CoerceMaxZoomLevelProperty(double maxZoomLevel)
|
||||
{
|
||||
return Math.Max(maxZoomLevel, MinZoomLevel);
|
||||
}
|
||||
|
||||
private double CoerceZoomLevelProperty(double zoomLevel)
|
||||
{
|
||||
return Math.Min(Math.Max(zoomLevel, MinZoomLevel), MaxZoomLevel);
|
||||
}
|
||||
|
||||
private double CoerceHeadingProperty(double heading)
|
||||
{
|
||||
return ((heading % 360d) + 360d) % 360d;
|
||||
}
|
||||
|
||||
private void SetValueInternal(DependencyProperty property, object value)
|
||||
{
|
||||
internalPropertyChange = true;
|
||||
SetValue(property, value);
|
||||
internalPropertyChange = false;
|
||||
}
|
||||
|
||||
private void MapProjectionPropertyChanged(MapProjection projection)
|
||||
{
|
||||
maxLatitude = 90d;
|
||||
|
||||
if (projection.IsNormalCylindrical)
|
||||
{
|
||||
maxLatitude = projection.MapToLocation(0d, 180d * MapProjection.Wgs84MeterPerDegree).Latitude;
|
||||
Center = CoerceCenterProperty(Center);
|
||||
}
|
||||
|
||||
ResetTransformCenter();
|
||||
UpdateTransform(false, true);
|
||||
}
|
||||
|
||||
private void UpdateTransform(bool resetTransformCenter = false, bool projectionChanged = false)
|
||||
{
|
||||
var transformCenterChanged = false;
|
||||
var viewScale = ZoomLevelToScale(ZoomLevel);
|
||||
var mapCenter = MapProjection.LocationToMap(transformCenter ?? Center);
|
||||
|
||||
ViewTransform.SetTransform(mapCenter, viewCenter, viewScale, -Heading);
|
||||
|
||||
if (transformCenter != null)
|
||||
{
|
||||
var center = ViewToLocation(new Point(ActualWidth / 2d, ActualHeight / 2d));
|
||||
var latitude = center.Latitude;
|
||||
var longitude = Location.NormalizeLongitude(center.Longitude);
|
||||
|
||||
if (latitude < -maxLatitude || latitude > maxLatitude)
|
||||
{
|
||||
latitude = Math.Min(Math.Max(latitude, -maxLatitude), maxLatitude);
|
||||
resetTransformCenter = true;
|
||||
}
|
||||
|
||||
if (!center.Equals(latitude, longitude))
|
||||
{
|
||||
center = new Location(latitude, longitude);
|
||||
}
|
||||
|
||||
SetValueInternal(CenterProperty, center);
|
||||
|
||||
if (centerAnimation == null)
|
||||
{
|
||||
SetValueInternal(TargetCenterProperty, center);
|
||||
}
|
||||
|
||||
if (resetTransformCenter)
|
||||
{
|
||||
// Check if transform center has moved across 180° longitude.
|
||||
//
|
||||
transformCenterChanged = Math.Abs(center.Longitude - transformCenter.Longitude) > 180d;
|
||||
ResetTransformCenter();
|
||||
mapCenter = MapProjection.LocationToMap(center);
|
||||
ViewTransform.SetTransform(mapCenter, viewCenter, viewScale, -Heading);
|
||||
}
|
||||
}
|
||||
|
||||
ViewScale = ViewTransform.Scale;
|
||||
|
||||
// Check if view center has moved across 180° longitude.
|
||||
//
|
||||
transformCenterChanged = transformCenterChanged || Math.Abs(Center.Longitude - centerLongitude) > 180d;
|
||||
centerLongitude = Center.Longitude;
|
||||
|
||||
OnViewportChanged(new ViewportChangedEventArgs(projectionChanged, transformCenterChanged));
|
||||
}
|
||||
|
||||
protected override void OnViewportChanged(ViewportChangedEventArgs e)
|
||||
{
|
||||
base.OnViewportChanged(e);
|
||||
ViewportChanged?.Invoke(this, e);
|
||||
}
|
||||
protected override void OnViewportChanged(ViewportChangedEventArgs e)
|
||||
{
|
||||
base.OnViewportChanged(e);
|
||||
ViewportChanged?.Invoke(this, e);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue