/// <summary>
/// Create unique valueClasses based on the weather url's
/// </summary>
/// <param name="imagevalues"></param>
/// <returns></returns>
private static CIMUniqueValueClass[] CreateUniqueValueClasses(List <string> imagevalues)
{
List <CIMUniqueValueClass> cimclasses = new List <CIMUniqueValueClass>();
foreach (string imageUrl in imagevalues)
{
CIMPictureMarker marker = new CIMPictureMarker()
{
Size = 30,
URL = BuildPictureMarkerURL(new Uri(imageUrl))
};
CIMUniqueValue uniqueValue = new CIMUniqueValue
{
FieldValues = new string[] { imageUrl }
};
CIMUniqueValueClass uniqueValueClass = new CIMUniqueValueClass
{
Symbol = SymbolFactory.Instance.ConstructPointSymbol(marker).MakeSymbolReference(),
Values = new CIMUniqueValue[] { uniqueValue }
};
cimclasses.Add(uniqueValueClass);
}
return(cimclasses.ToArray());
}
public async Task RedrawPointAsync()
{
await QueuedTask.Run(() =>
{
GlobeSpotter globeSpotter = GlobeSpotter.Current;
MeasurementList measurementList = globeSpotter.MeasurementList;
_disposeText?.Dispose();
if ((globeSpotter.InsideScale() && (!_isDisposed) && (Point != null) &&
((Measurement?.IsOpen ?? false) ||
((Measurement?.IsPointMeasurement ?? false) && (measurementList.Sketch == null))) &&
(Measurement?.DrawPoint ?? false) && (!double.IsNaN(Point.X)) && (!double.IsNaN(Point.Y))))
{
MapView thisView = MapView.Active;
Point winPoint = thisView.MapToScreen(Point);
float fontSize = _constants.MeasurementFontSize;
int fontSizeT = (int)(fontSize * 2);
int fontSizeR = (int)((fontSize * 3) / 2);
int fontSizeK = (int)(fontSize / 4);
int txt = (Measurement?.IsOpen ?? true) ? Index : measurementList.GetMeasurementNumber(Measurement);
string text = txt.ToString(_ci);
int characters = text.Length;
Bitmap bitmap = new Bitmap((fontSizeT *characters), fontSizeT);
double pointSize = _constants.MeasurementPointSize;
double pointSizePoint = (pointSize * 6) / 4;
Point winPointText = new Point {
X = (winPoint.X + pointSizePoint), Y = (winPoint.Y - pointSizePoint)
};
MapPoint pointText = thisView.ScreenToMap(winPointText);
using (var sf = new StringFormat())
{
using (Graphics g = Graphics.FromImage(bitmap))
{
g.Clear(Color.Transparent);
Font font = new Font("Arial", fontSize);
sf.Alignment = StringAlignment.Center;
Rectangle rectangle = new Rectangle(fontSizeK, fontSizeK, (fontSizeR *characters), fontSizeR);
g.DrawString(text, font, Brushes.Black, rectangle, sf);
}
}
BitmapSource source = bitmap.ToBitmapSource();
var frame = BitmapFrame.Create(source);
var encoder = new PngBitmapEncoder();
encoder.Frames.Add(frame);
using (MemoryStream stream = new MemoryStream())
{
encoder.Save(stream);
byte[] imageBytes = stream.ToArray();
string base64String = Convert.ToBase64String(imageBytes);
string url = $"data:image/bmp;base64,{base64String}";
CIMPictureMarker marker = new CIMPictureMarker
{
URL = url,
Enable = true,
ScaleX = 1,
Size = fontSizeR
};
CIMPointSymbol symbol = SymbolFactory.Instance.ConstructPointSymbol(marker);
CIMSymbolReference symbolReference = symbol.MakeSymbolReference();
_disposeText = thisView.AddOverlay(pointText, symbolReference);
}
}
});
}