# vim: set fileencoding=utf-8 :

# ***********************IMPORTANT NMAP LICENSE TERMS************************
# *                                                                         *
# * The Nmap Security Scanner is (C) 1996-2020 Insecure.Com LLC ("The Nmap  *
# * Project"). Nmap is also a registered trademark of the Nmap Project.     *
# *                                                                         *
# * This program is distributed under the terms of the Nmap Public Source   *
# * License (NPSL). The exact license text applying to a particular Nmap    *
# * release or source code control revision is contained in the LICENSE     *
# * file distributed with that version of Nmap or source code control       *
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# * for the actual license text.                                            *
# *                                                                         *
# * Nmap is generally free for end users to download and use themselves,    *
# * including commercial use. It is available from https://nmap.org.        *
# *                                                                         *
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# * OEM Edition with a more permissive license and special features for     *
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# *                                                                         *
# * The official Nmap Windows builds include the Npcap software             *
# * (https://npcap.org) for packet capture and transmission. It is under    *
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# * This also allows you to audit the software for security holes.          *
# *                                                                         *
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# * because the inability to relicense code has caused devastating          *
# * problems for other Free Software projects (such as KDE and NASM).       *
# *                                                                         *
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# * Npcap OEM program--see https://nmap.org/oem.                            *
# *                                                                         *
# ***************************************************************************/

import math


def is_in_square(point, half_side, center=(0, 0)):
    """
    """
    x, y = point
    a, b = center

    if a + half_side >= x >= a - half_side:
        if b + half_side >= y >= b - half_side:
            return True

    return False


def is_in_circle(point, radius=1, center=(0, 0)):
    """
    """
    x, y = point
    a, b = center

    if ((x - a) ** 2 + (y - b) ** 2) <= (radius ** 2):
        return True

    return False


def atan_scale(point, scale_ceil):
    """
    """
    new_point = float(10.0 * point / scale_ceil) - 5
    return math.atan(abs(new_point))


def normalize_angle(angle):
    """
    """
    new_angle = 360.0 * (float(angle / 360) - int(angle / 360))

    if new_angle < 0:
        return 360 + new_angle

    return new_angle


def is_between_angles(a, b, c):
    """
    """
    a = normalize_angle(a)
    b = normalize_angle(b)
    c = normalize_angle(c)

    if a > b:

        if c >= a and c <= 360 or c <= b:
            return True

        return False

    else:

        if c >= a and c <= b:
            return True

        return False


def angle_distance(a, b):
    """
    """
    distance = abs(normalize_angle(a) - normalize_angle(b))

    if distance > 180:
        return 360 - distance

    return distance


def calculate_short_path(iangle, fangle):
    """
    """
    if iangle - fangle > 180:
        fangle += 360

    if iangle - fangle < -180:
        fangle -= 360

    return iangle, fangle


def angle_from_object(distance, size):
    """
    """
    return math.degrees(math.atan2(size / 2.0, distance))
