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misc.py

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from radialnet.core.Coordinate import CartesianCoordinate
from radialnet.gui.RadialNet import *
from radialnet.util.geometry import *
import math



def ipv4_compare(ip1, ip2):
    """
    """
    ip1 = [int(i) for i in ip1.split('.')]
    ip2 = [int(i) for i in ip2.split('.')]

    for i in range(4):

        if ip1[i] != ip2[i]:

            if ip1[i] < ip2[i]:
                return -1

            else:
                return 1

    return 0


def list_difference_update(list, difference):
    """
    """
    for item in difference:

        if item in list:
            list.remove(item)


def list_update(list, append):
    """
    """
    for item in append:

        if item not in list:
            list.append(item)


def swap(list, a, b):
    """
    """
    list[a], list[b] = list[b], list[a]


def sort_children(children, father):
    """
    """
    if len(children) < 2:
        return children

    # create angle reference
    f_x, f_y = father.get_cartesian_coordinate()

    for child in children:

        c_x, c_y = child.get_cartesian_coordinate()
        _, angle = CartesianCoordinate(c_x - f_x, c_y - f_y).to_polar()

        child.set_draw_info({'angle_from_father': math.degrees(angle)})

    return sort_children_by_angle(children)


def sort_children_by_angle(children):
    """
    """
    if len(children) < 2:
        return children

    vector = list()
    vector.append(children.pop())

    for a in children:

        theta_a = normalize_angle(a.get_draw_info('angle_from_father'))

        for i in range(len(vector) -1, -1, -1):

            b = vector[i]

            theta_b = normalize_angle(b.get_draw_info('angle_from_father'))

            if theta_b <= theta_a <= theta_b + 180:

                vector.insert(i + 1, a)
                break

        else:
            vector.insert(0, a)

    return vector

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