private void service_DragDelta(object sender, InteractiveDragDeltaEventArgs e)
{
if (!IsWorking)
{
return;
}
// IMPORTANT NOTE: The SelectAreaView we render the control points inside and the shaded area is added to the image viewer item itself
// and not on the whole image viewer control so we need to map the touch points to item coordinates.
var position = ImageViewer.ConvertPoint(null, ImageViewerCoordinateType.Control, ImageViewerCoordinateType.Image, e.Position);
if (ActivePoint != ManualDeskewActivePoint.None)
{
switch (ActivePoint)
{
case ManualDeskewActivePoint.TopLeft: TopLeft = position; break;
case ManualDeskewActivePoint.TopRight: TopRight = position; break;
case ManualDeskewActivePoint.BottomLeft: BottomLeft = position; break;
case ManualDeskewActivePoint.BottomRight: BottomRight = position; break;
case ManualDeskewActivePoint.TopMid: TopMid = position; break;
case ManualDeskewActivePoint.BottomMid: BottomMid = position; break;
case ManualDeskewActivePoint.LeftMid: LeftMid = position; break;
case ManualDeskewActivePoint.RightMid: RightMid = position; break;
default: break;
}
}
UpdateControlPoints();
}
