private void RotateSymbol(IMuteMap map, double dx, double dy,
bool snapToFeatures = false, bool snapToAxes = false)
{
var layer = map.GetLayer(CurrentObject.LayerHandle);
var fs = layer.FeatureSet;
var feature = fs.Features[CurrentObject.ObjectIndex];
if (feature == null)
{
return;
}
var projCoordinate = _context.Map.PixelToProj(new Coordinate(dx, dy));
CurrentObject.UpdateRotationField(layer, projCoordinate.X, projCoordinate.Y, snapToFeatures, snapToAxes);
map.Redraw();
}