protected Envelope CreateHitBox(MapView mapView, MapPoint location, double sizeInPoints, SpatialReference spatialRef)
{
var sizeInPixels = Drawing.PixelsFromPoints(sizeInPoints);
var refPoint = mapView.MapToClient(location);
var minPoint = mapView.ClientToMap(new System.Windows.Point(refPoint.X - sizeInPixels, refPoint.Y + sizeInPixels)); // remember, screen Y axis starts from top to bottom
var maxPoint = mapView.ClientToMap(new System.Windows.Point(refPoint.X + sizeInPixels, refPoint.Y - sizeInPixels));
return(EnvelopeBuilder.CreateEnvelope(minPoint, maxPoint, spatialRef));
}
public void setCurrentCoordinate()
{
MapView activeMapView = MapView.Active;
this.coordinateCameraX = activeMapView.Camera.X;
this.coordinateCameraY = activeMapView.Camera.Y;
Task t = QueuedTask.Run(() =>
{
MapPoint topLeftPoint = activeMapView.ClientToMap(new Point(0, 0));
this.coordinateTopX = topLeftPoint.X;
this.coordinateTopY = topLeftPoint.Y;
});
t.Wait();
this.coordinateBottomX = coordinateCameraX + coordinateCameraX - coordinateTopX;
this.coordinateBottomY = coordinateCameraY + coordinateCameraY - coordinateTopY;
}
