public Arrow(Cadeirinha cad, double screenRelation) : this(cad)
{
Img.Margin = new Thickness()
{
Left = CalculateArrowMargin(screenRelation)
};
}
public Arrow(Cadeirinha cad)
{
ArrowHeight = 100;
Cad = cad;
Direction = GetArrowDirection();
Img.Source = new Bmp(Direction).GetBitMapSource();
Img.Height = ArrowHeight;
Img.Margin = new Thickness()
{
Left = Cad.Width - ArrowHeight / 2
};
Img.HorizontalAlignment = HorizontalAlignment.Left;
}