public static IFeature ToFeature(this Feature feature)
{
if (feature == null)
{
return(null);
}
IFeature forms = null;
if (feature.Geometry() is Point point)
{
var cords = point.Coordinates();
forms = new PointFeature(new PointAnnotation
{
Id = feature.Id(),
Coordinate = new Position
{
Lat = cords[0].DoubleValue(),
Long = cords[1].DoubleValue()
}
});
}
else if (feature.Geometry() is LineString line)
{
var coords = line.Coordinates()
.Select(ToForms)
.ToArray();
forms = new PolylineFeature(new PolylineAnnotation
{
Id = feature.Id(),
Coordinates = coords
});
}
else if (feature.Geometry() is MultiLineString mline)
{
var coords = mline.Coordinates()
.Select(x => x.Select(ToForms).ToArray())
.ToArray();
forms = new MultiPolylineFeature(new MultiPolylineAnnotation
{
Id = feature.Id(),
Coordinates = coords
});
}
if (forms != null)
{
var json = feature.Properties().ToString();
forms.Attributes = Newtonsoft.Json.JsonConvert.DeserializeObject <Dictionary <string, object> >(json);
}
return(forms);
}
public static IFeature ToFeature(this Feature feature)
{
if (feature == null)
{
return(null);
}
IFeature forms = null;
if (feature.Geometry is Point)
{
var point = (Point)feature.Geometry;
forms = new PointFeature(new PointAnnotation {
Id = feature.Id,
Coordinate = point.Coordinates.ToForms()
});
}
else if (feature.Geometry is LineString)
{
var line = (LineString)feature.Geometry;
var coords = line.Coordinates
.Select(ToForms)
.ToArray();
forms = new PolylineFeature(new PolylineAnnotation {
Id = feature.Id,
Coordinates = coords
});
}
else if (feature.Geometry is MultiLineString)
{
var line = (MultiLineString)feature.Geometry;
var coords = line.Coordinates
.Select(x => x.Select(ToForms).ToArray())
.ToArray();
forms = new MultiPolylineFeature(new MultiPolylineAnnotation {
Id = feature.Id,
Coordinates = coords
});
}
if (forms != null)
{
var json = feature.Properties.ToString();
forms.Attributes = Newtonsoft.Json.JsonConvert.DeserializeObject <Dictionary <string, object> >(json);
}
return(forms);
}
void SetupFunctions()
{
Element.TakeSnapshot = () => {
var image = MapView.Capture(true);
var imageData = image.AsJPEG();
Byte [] imgByteArray = new Byte [imageData.Length];
System.Runtime.InteropServices.Marshal.Copy(imageData.Bytes,
imgByteArray,
0,
Convert.ToInt32(imageData.Length));
return(imgByteArray);
};
Element.GetFeaturesAroundPoint = (Point point, double radius, string [] layers) => {
var selectableLayers = SelectableLayersFromSources(layers);
NSObject [] features;
var cgPoint = new CGPoint((nfloat)point.X, (nfloat)point.Y);
if (radius <= 0)
{
features = MapView.VisibleFeaturesAtPoint(cgPoint, selectableLayers);
}
else
{
var rect = new CGRect(cgPoint.X - (nfloat)radius, cgPoint.Y - (nfloat)radius, (nfloat)radius * 2, (nfloat)radius * 2);
features = MapView.VisibleFeaturesInRect(rect, selectableLayers);
}
var output = new List <IFeature> ();
foreach (NSObject obj in features)
{
var feature = obj as IMGLFeature;
if (feature == null || feature.Attributes == null)
{
continue;
}
string id = null;
if (feature.Identifier != null)
{
if (feature.Identifier is NSNumber)
{
id = ((NSNumber)feature.Identifier).StringValue;
}
else
{
id = feature.Identifier.ToString();
}
}
if (id == null || output.Any((arg) => (arg as Annotation).Id == id))
{
continue;
}
var geoData = feature.GeoJSONDictionary;
if (geoData == null)
{
continue;
}
IFeature ifeat = null;
if (feature is MGLPointFeature)
{
ifeat = new PointFeature();
(ifeat as PointFeature).Title = ((MGLPointFeature)feature).Title;
(ifeat as PointFeature).SubTitle = ((MGLPointFeature)feature).Subtitle;
(ifeat as PointFeature).Coordinate = TypeConverter.FromCoordinateToPosition(((MGLPointFeature)feature).Coordinate);
}
else
{
var geometry = geoData ["geometry"];
NSArray coorArr = null;
var coordinates = (geometry as NSDictionary) ["coordinates"];
if (coordinates != null && coordinates is NSArray)
{
coorArr = coordinates as NSArray;
}
if (feature is MGLPolylineFeature)
{
ifeat = new PolylineFeature();
(ifeat as PolylineFeature).Title = ((MGLPolylineFeature)feature).Title;
(ifeat as PolylineFeature).SubTitle = ((MGLPolylineFeature)feature).Subtitle;
if (coorArr != null)
{
var coorsList = new List <Position>();
(ifeat as PolylineFeature).Coordinates = new Position [coorArr.Count];
for (nuint i = 0; i < coorArr.Count; i++)
{
var childArr = coorArr.GetItem <NSArray> (i);
if (childArr != null && childArr.Count == 2)
{
var coord = new Position(childArr.GetItem <NSNumber> (1).DoubleValue, //lat
childArr.GetItem <NSNumber> (0).DoubleValue); //long
coorsList.Add(coord);
}
}
(ifeat as PolylineFeature).Coordinates = new ObservableCollection <Position>(coorsList);
}
}
else if (feature is MGLMultiPolylineFeature)
{
ifeat = new MultiPolylineFeature();
(ifeat as MultiPolylineFeature).Title = ((MGLMultiPolylineFeature)feature).Title;
(ifeat as MultiPolylineFeature).SubTitle = ((MGLMultiPolylineFeature)feature).Subtitle;
if (coorArr != null)
{
(ifeat as MultiPolylineFeature).Coordinates = new Position [coorArr.Count] [];
for (nuint i = 0; i < coorArr.Count; i++)
{
var childArr = coorArr.GetItem <NSArray> (i);
if (childArr != null)
{
(ifeat as MultiPolylineFeature).Coordinates [i] = new Position [childArr.Count];
for (nuint j = 0; j < childArr.Count; j++)
{
var anscArr = childArr.GetItem <NSArray> (j);
if (anscArr != null && anscArr.Count == 2)
{
(ifeat as MultiPolylineFeature).Coordinates [i] [j] = new Position(anscArr.GetItem <NSNumber> (1).DoubleValue, //lat
anscArr.GetItem <NSNumber> (0).DoubleValue);
}
}
}
}
}
}
}
if (ifeat != null)
{
(ifeat as Annotation).Id = id;
ifeat.Attributes = ConvertDictionary(feature.Attributes);
output.Add(ifeat);
}
}
return(output.ToArray());
};
Element.ResetPositionFunc = new Command((arg) => {
MapView.ResetPosition();
});
Element.ReloadStyleFunc = new Command((arg) =>
{
MapView.ReloadStyle(MapView);
});
Element.UpdateShapeOfSourceFunc = (Annotation annotation, string sourceId) => {
if (annotation != null && !string.IsNullOrEmpty(sourceId))
{
var mglSource = MapView.Style.SourceWithIdentifier((NSString)("NXCustom_" + sourceId));
if (mglSource != null && mglSource is MGLShapeSource)
{
(mglSource as MGLShapeSource).Shape = ShapeFromAnnotation(annotation);
if (Element.MapStyle.CustomSources != null)
{
var count = Element.MapStyle.CustomSources.Count();
for (var i = 0; i < count; i++)
{
if (Element.MapStyle.CustomSources.ElementAt(i).Id == sourceId)
{
Element.MapStyle.CustomSources.ElementAt(i).Shape = annotation;
break;
}
}
}
return(true);
}
}
return(false);
};
Element.UpdateLayerFunc = (string layerId, bool isVisible, bool IsCustom) => {
if (!string.IsNullOrEmpty(layerId))
{
NSString layerIdStr = IsCustom ? (NSString)("NXCustom_" + layerId) : (NSString)layerId;
var layer = MapView.Style.LayerWithIdentifier(layerIdStr);
if (layer != null)
{
layer.Visible = isVisible;
if (IsCustom && Element.MapStyle.CustomLayers != null)
{
var count = Element.MapStyle.CustomLayers.Count();
for (var i = 0; i < count; i++)
{
if (Element.MapStyle.CustomLayers.ElementAt(i).Id == layerId)
{
Element.MapStyle.CustomLayers.ElementAt(i).IsVisible = isVisible;
break;
}
}
}
return(true);
}
}
return(false);
};
}
protected void SetupFunctions()
{
Element.TakeSnapshotFunc = () => {
var image = MapView.Capture(true);
var imageData = image.AsJPEG();
Byte[] imgByteArray = new Byte[imageData.Length];
System.Runtime.InteropServices.Marshal.Copy(imageData.Bytes,
imgByteArray,
0,
Convert.ToInt32(imageData.Length));
return(imgByteArray);
};
Element.GetFeaturesAroundPointFunc = (Point point, double radius, string[] layers) => {
var selectableLayers = SelectableLayersFromSources(layers);
NSObject[] features;
var cgPoint = new CGPoint((nfloat)point.X, (nfloat)point.Y);
if (radius <= 0)
{
features = MapView.VisibleFeaturesAtPoint(cgPoint, selectableLayers);
}
else
{
var rect = new CGRect(cgPoint.X - (nfloat)radius, cgPoint.Y - (nfloat)radius, (nfloat)radius * 2, (nfloat)radius * 2);
features = MapView.VisibleFeaturesInRect(rect, selectableLayers);
}
var output = new List <IFeature>();
foreach (NSObject obj in features)
{
var feature = obj as IMGLFeature;
if (feature == null || feature.Attributes == null)
{
continue;
}
string id = null;
if (feature.Identifier != null)
{
if (feature.Identifier is NSNumber)
{
id = ((NSNumber)feature.Identifier).StringValue;
}
else
{
id = feature.Identifier.ToString();
}
}
if (id == null || output.Any((arg) => (arg as Annotation).Id == id))
{
continue;
}
var geoData = feature.GeoJSONDictionary;
if (geoData == null)
{
continue;
}
IFeature ifeat = null;
if (feature is MGLPointFeature)
{
ifeat = new PointFeature();
(ifeat as PointFeature).Title = ((MGLPointFeature)feature).Title;
(ifeat as PointFeature).SubTitle = ((MGLPointFeature)feature).Subtitle;
(ifeat as PointFeature).Coordinate = TypeConverter.FromCoordinateToPosition(((MGLPointFeature)feature).Coordinate);
}
else
{
var geometry = geoData["geometry"];
NSArray coorArr = null;
var coordinates = (geometry as NSDictionary)["coordinates"];
if (coordinates != null && coordinates is NSArray)
{
coorArr = coordinates as NSArray;
}
if (feature is MGLPolylineFeature)
{
ifeat = new PolylineFeature();
(ifeat as PolylineFeature).Title = ((MGLPolylineFeature)feature).Title;
(ifeat as PolylineFeature).SubTitle = ((MGLPolylineFeature)feature).Subtitle;
if (coorArr != null)
{
var coorsList = new List <Position>();
(ifeat as PolylineFeature).Coordinates = new Position[coorArr.Count];
for (nuint i = 0; i < coorArr.Count; i++)
{
var childArr = coorArr.GetItem <NSArray>(i);
if (childArr != null && childArr.Count == 2)
{
var coord = new Position(childArr.GetItem <NSNumber>(1).DoubleValue, //lat
childArr.GetItem <NSNumber>(0).DoubleValue); //long
coorsList.Add(coord);
}
}
(ifeat as PolylineFeature).Coordinates = new ObservableCollection <Position>(coorsList);
}
}
else if (feature is MGLMultiPolylineFeature)
{
ifeat = new MultiPolylineFeature();
(ifeat as MultiPolylineFeature).Title = ((MGLMultiPolylineFeature)feature).Title;
(ifeat as MultiPolylineFeature).SubTitle = ((MGLMultiPolylineFeature)feature).Subtitle;
if (coorArr != null)
{
(ifeat as MultiPolylineFeature).Coordinates = new Position[coorArr.Count][];
for (nuint i = 0; i < coorArr.Count; i++)
{
var childArr = coorArr.GetItem <NSArray>(i);
if (childArr != null)
{
(ifeat as MultiPolylineFeature).Coordinates[i] = new Position[childArr.Count];
for (nuint j = 0; j < childArr.Count; j++)
{
var anscArr = childArr.GetItem <NSArray>(j);
if (anscArr != null && anscArr.Count == 2)
{
(ifeat as MultiPolylineFeature).Coordinates[i][j] = new Position(anscArr.GetItem <NSNumber>(1).DoubleValue, //lat
anscArr.GetItem <NSNumber>(0).DoubleValue);
}
}
}
}
}
}
}
if (ifeat != null)
{
(ifeat as Annotation).Id = id;
ifeat.Attributes = ConvertDictionary(feature.Attributes);
output.Add(ifeat);
}
}
return(output.ToArray());
};
Element.ResetPositionAction = () => {
MapView.ResetPosition();
};
Element.ReloadStyleAction = () =>
{
MapView.ReloadStyle(MapView);
};
Element.UpdateShapeOfSourceFunc = (Annotation annotation, string sourceId) => {
if (annotation != null && !string.IsNullOrEmpty(sourceId))
{
var mglSource = MapView.Style.SourceWithIdentifier(sourceId.ToCustomId());
if (mglSource != null && mglSource is MGLShapeSource)
{
Device.BeginInvokeOnMainThread(() =>
{
(mglSource as MGLShapeSource).Shape = ShapeFromAnnotation(annotation);
});
if (Element.MapStyle.CustomSources != null)
{
var count = Element.MapStyle.CustomSources.Count();
for (var i = 0; i < count; i++)
{
if (Element.MapStyle.CustomSources.ElementAt(i).Id == sourceId)
{
Element.MapStyle.CustomSources.ElementAt(i).Shape = annotation;
break;
}
}
}
return(true);
}
}
return(false);
};
Element.UpdateLayerFunc = (string layerId, bool isVisible, bool IsCustom) => {
if (!string.IsNullOrEmpty(layerId))
{
NSString layerIdStr = IsCustom ? layerId.ToCustomId() : (NSString)layerId;
var layer = MapView.Style.LayerWithIdentifier(layerIdStr);
if (layer != null)
{
layer.Visible = isVisible;
if (IsCustom && Element.MapStyle.CustomLayers != null)
{
var count = Element.MapStyle.CustomLayers.Count();
for (var i = 0; i < count; i++)
{
if (Element.MapStyle.CustomLayers.ElementAt(i).Id == layerId)
{
Element.MapStyle.CustomLayers.ElementAt(i).IsVisible = isVisible;
break;
}
}
}
return(true);
}
}
return(false);
};
Element.UpdateViewPortAction = (Position centerLocation, double?zoomLevel, double?bearing, bool animated, Action completionBlock) => {
MapView.SetCenterCoordinate(
centerLocation?.ToCLCoordinate() ?? MapView.CenterCoordinate,
zoomLevel ?? MapView.ZoomLevel,
bearing ?? MapView.Direction,
animated,
completionBlock
);
};
//Element.GetMapScaleReciprocalFunc = () => {
// if (MapView == null) return 500000000;
// System.Diagnostics.Debug.WriteLine($"Center latitude: {MapView.CenterCoordinate.Latitude}");
// var metersPerPoint = MapView.MetersPerPointAtLatitude(MapView.CenterCoordinate.Latitude);
// System.Diagnostics.Debug.WriteLine($"metersPerPoint: {metersPerPoint}");
// var resolution = metersPerPoint / Math.Pow(2, MapView.ZoomLevel);
// System.Diagnostics.Debug.WriteLine($"resolution: {resolution}");
// var output = UIDeviceExtensions.DPI() * 39.37 * resolution;
// return output;
//};
Element.ToggleScaleBarFunc = (bool show) => {
if (MapView == null || MapView.ScaleBar == null)
{
return(false);
}
InvokeOnMainThread(() => {
System.Diagnostics.Debug.WriteLine($"Toggle scale bar: {show}");
MapView.ScaleBar.Hidden = !show;
});
return(true);
};
Element.GetStyleImageFunc = (imageName) => {
if (string.IsNullOrEmpty(imageName) ||
MapView == null ||
MapView.Style == null)
{
return(null);
}
return(MapView.Style.ImageForName(imageName)?.AsPNG().ToArray());
};
Element.GetStyleLayerFunc = (string layerId, bool isCustom) => {
if (string.IsNullOrEmpty(layerId) ||
MapView == null ||
MapView.Style == null)
{
return(null);
}
NSString layerIdStr = isCustom ? layerId.ToCustomId() : (NSString)layerId;
var layer = MapView.Style.LayerWithIdentifier(layerIdStr);
if (layer is MGLVectorStyleLayer vLayer)
{
return(CreateStyleLayer(vLayer, layerId));
}
return(null);
};
}
