private void moveDot(Windows.Foundation.Point newPosition)
{
Vector2 origin = spriteBatch.CalculatePointerPosition(
new Vector2((float)newPosition.X, (float)newPosition.Y),
PositionUnits.Pixels);
//TODO : Need to work out how to calculate this 35/28 factor
Vector2 offset = new Vector2(63.0f, 35.0f) * origin;
_currentPointerPosition.X = offset.X;
_currentPointerPosition.Y = offset.Y;
}