Questions about width and lenght about class Grasp about robotic-grasping

[thewq]

I know why there is scalar "quality",it is a scalar caculated from q_image

def detect_grasps(q_img, ang_img, width_img=None, no_grasps=1):
    """
    Detect grasps in a GG-CNN output.
    :param q_img: Q image network output
    :param ang_img: Angle image network output
    :param width_img: (optional) Width image network output
    :param no_grasps: Max number of grasps to return
    :return: list of Grasps
    """
    local_max = peak_local_max(q_img, min_distance=20, threshold_abs=0.2, num_peaks=no_grasps)

    grasps = []
    for grasp_point_array in local_max:
        grasp_point = tuple(grasp_point_array)

        grasp_angle = ang_img[grasp_point]

        g = Grasp(grasp_point, grasp_angle)
        if width_img is not None:
            g.length = width_img[grasp_point]
            g.width = g.length/2

        grasps.append(g)

    return grasps

but should defined a new function rather than change the function Grasp init()