mirror of
https://github.com/nmap/nmap.git
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154 lines
4.7 KiB
Python
154 lines
4.7 KiB
Python
# vim: set fileencoding=utf-8 :
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# ***********************IMPORTANT NMAP LICENSE TERMS************************
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# *
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# * The Nmap Security Scanner is (C) 1996-2024 Nmap Software LLC ("The Nmap
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# * Project"). Nmap is also a registered trademark of the Nmap Project.
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# *
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# * This program is distributed under the terms of the Nmap Public Source
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# * License (NPSL). The exact license text applying to a particular Nmap
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# * release or source code control revision is contained in the LICENSE
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# * file distributed with that version of Nmap or source code control
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# * revision. More Nmap copyright/legal information is available from
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# * https://nmap.org/book/man-legal.html, and further information on the
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# * NPSL license itself can be found at https://nmap.org/npsl/ . This
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# * header summarizes some key points from the Nmap license, but is no
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# * substitute for the actual license text.
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# *
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# * Nmap is generally free for end users to download and use themselves,
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# * including commercial use. It is available from https://nmap.org.
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# *
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# * The Nmap license generally prohibits companies from using and
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# * redistributing Nmap in commercial products, but we sell a special Nmap
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# * OEM Edition with a more permissive license and special features for
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# * this purpose. See https://nmap.org/oem/
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# *
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# * If you have received a written Nmap license agreement or contract
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# * stating terms other than these (such as an Nmap OEM license), you may
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# * choose to use and redistribute Nmap under those terms instead.
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# *
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# * The official Nmap Windows builds include the Npcap software
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# * (https://npcap.com) for packet capture and transmission. It is under
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# * separate license terms which forbid redistribution without special
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# * permission. So the official Nmap Windows builds may not be redistributed
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# * without special permission (such as an Nmap OEM license).
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# *
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# * Source is provided to this software because we believe users have a
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# * right to know exactly what a program is going to do before they run it.
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# * This also allows you to audit the software for security holes.
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# *
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# * Source code also allows you to port Nmap to new platforms, fix bugs, and
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# * add new features. You are highly encouraged to submit your changes as a
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# * Github PR or by email to the dev@nmap.org mailing list for possible
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# * incorporation into the main distribution. Unless you specify otherwise, it
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# * is understood that you are offering us very broad rights to use your
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# * submissions as described in the Nmap Public Source License Contributor
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# * Agreement. This is important because we fund the project by selling licenses
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# * with various terms, and also because the inability to relicense code has
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# * caused devastating problems for other Free Software projects (such as KDE
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# * and NASM).
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# *
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# * The free version of Nmap is distributed in the hope that it will be
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# * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. Warranties,
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# * indemnification and commercial support are all available through the
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# * Npcap OEM program--see https://nmap.org/oem/
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# *
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# ***************************************************************************/
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import math
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def is_in_square(point, half_side, center=(0, 0)):
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"""
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"""
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x, y = point
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a, b = center
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if a + half_side >= x >= a - half_side:
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if b + half_side >= y >= b - half_side:
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return True
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return False
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def is_in_circle(point, radius=1, center=(0, 0)):
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"""
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"""
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x, y = point
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a, b = center
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if ((x - a) ** 2 + (y - b) ** 2) <= (radius ** 2):
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return True
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return False
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def atan_scale(point, scale_ceil):
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"""
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"""
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new_point = float(10.0 * point / scale_ceil) - 5
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return math.atan(abs(new_point))
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def normalize_angle(angle):
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"""
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"""
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new_angle = 360.0 * (float(angle / 360) - int(angle / 360))
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if new_angle < 0:
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return 360 + new_angle
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return new_angle
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def is_between_angles(a, b, c):
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"""
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"""
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a = normalize_angle(a)
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b = normalize_angle(b)
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c = normalize_angle(c)
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if a > b:
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if c >= a and c <= 360 or c <= b:
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return True
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return False
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else:
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if c >= a and c <= b:
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return True
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return False
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def angle_distance(a, b):
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"""
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"""
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distance = abs(normalize_angle(a) - normalize_angle(b))
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if distance > 180:
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return 360 - distance
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return distance
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def calculate_short_path(iangle, fangle):
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"""
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"""
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if iangle - fangle > 180:
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fangle += 360
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if iangle - fangle < -180:
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fangle -= 360
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return iangle, fangle
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def angle_from_object(distance, size):
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"""
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"""
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return math.degrees(math.atan2(size / 2.0, distance))
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