src/Maths/Geometry/Rectangle.php
public function getWidth()
    {
        return max(array(
            ($this->getPointB()->getAbscissa() - $this->getPointA()->getAbscissa()),
            ($this->getPointD()->getOrdinate() - $this->getPointA()->getOrdinate())
        ));
    }
public function getWidth()
    {
        return max(array(
            ($this->getPointB()->getAbscissa() - $this->getPointA()->getAbscissa()),
            ($this->getPointD()->getOrdinate() - $this->getPointA()->getOrdinate())
        ));
    }
Get rectangle's width (by convention width > height)

@return  numeric