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-# coding: utf-8
-# /*##########################################################################
-#
-# Copyright (c) 2018 European Synchrotron Radiation Facility
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to deal
-# in the Software without restriction, including without limitation the rights
-# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-# copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-# THE SOFTWARE.
-#
-# ###########################################################################*/
-"""offer some generic 2D bounding box features
-"""
-
-__authors__ = ["H. Payno"]
-__license__ = "MIT"
-__date__ = "07/09/2019"
-
-from silx.math.combo import min_max
-import numpy
-
-
-class _BoundingBox:
- """
- Simple 2D bounding box
-
- :param tuple bottom_left: (y, x) bottom left point
- :param tuple top_right: (y, x) top right point
- """
- def __init__(self, bottom_left, top_right):
- self.bottom_left = bottom_left
- self.top_right = top_right
- self.min_x = bottom_left[1]
- self.min_y = bottom_left[0]
- self.max_x = top_right[1]
- self.max_y = top_right[0]
-
- def contains(self, item):
- """
-
- :param item: bouding box or point. If it is bounding check check if the
- bottom_left and top_right corner of the given bounding box
- are inside the current bounding box
- :type: Union[BoundingBox, tuple]
- :return:
- """
- if isinstance(item, _BoundingBox):
- return self.contains(item.bottom_left) and self.contains(item.top_right)
- else:
- return (
- (self.min_x <= item[1] <= self.max_x) and
- (self.min_y <= item[0] <= self.max_y)
- )
-
- def collide(self, bb):
- """
- Check if the two bounding box collide
-
- :param bb: bounding box to compare with
- :type: :class:BoundingBox
- :return: True if the two boxes collides
- :rtype: bool
- """
- assert isinstance(bb, _BoundingBox)
- return (
- (self.min_x < bb.max_x and self.max_x > bb.min_x) and
- (self.min_y < bb.max_y and self.max_y > bb.min_y)
- )
-
- @staticmethod
- def from_points(points):
- """
-
- :param numpy.array tuple points: list of points. Should be 2D:
- [(y1, x1), (y2, x2), (y3, x3), ...]
- :return: bounding box from two points
- :rtype: _BoundingBox
- """
- if not isinstance(points, numpy.ndarray):
- points_ = numpy.ndarray(points)
- else:
- points_ = points
- x = points_[:, 1]
- y = points_[:, 0]
- x_min, x_max = min_max(x)
- y_min, y_max = min_max(y)
- return _BoundingBox(bottom_left=(y_min, x_min), top_right=(y_max, x_max))