private void canvasImage_LeftMouseDown(object sender, MouseButtonEventArgs e)
{
presentationHandler.canvas2DElementSelected(((Image)sender).Tag);
e.Handled = true;
if (firstClick)
{
Cursor = Cursors.Hand;
moveImage = true;
firstClick = false;
movingImageElement = (Image)sender;
movingImage = (Image2D)movingImageElement.Tag;
GeneralTransform transform = movingImageElement.TransformToAncestor(movingImageElement.Parent as Visual);
Point StartPoint = transform.Transform(new Point(0, 0));
startImagePositionX = StartPoint.X;
startImagePositionX = StartPoint.Y;
Point RelativeMousePoint = Mouse.GetPosition(movingImageElement);
startMousePositionX = RelativeMousePoint.X;
startMousePositionY = RelativeMousePoint.Y;
movingImageElement.RenderTransform = new TranslateTransform();
}
}