129 lines
3.6 KiB
Python
129 lines
3.6 KiB
Python
# See https://stackoverflow.com/a/33533514
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from __future__ import annotations
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from json import dumps
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from operator import itemgetter
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from typing import Iterable, Union, Dict
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from funcy import identity
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from cv_analysis.utils.spacial import adjacent, contains, intersection, iou, area, is_contained
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Coord = Union[int, float]
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class Rectangle:
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def __init__(self, x1, y1, x2, y2, discrete=True):
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"""Creates a rectangle from two points."""
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nearest_valid = int if discrete else identity
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self.__x1 = nearest_valid(x1)
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self.__y1 = nearest_valid(y1)
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self.__x2 = nearest_valid(x2)
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self.__y2 = nearest_valid(y2)
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self.__w = nearest_valid(x2 - x1)
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self.__h = nearest_valid(y2 - y1)
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@property
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def x1(self):
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return self.__x1
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@property
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def x2(self):
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return self.__x2
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@property
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def y1(self):
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return self.__y1
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@property
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def y2(self):
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return self.__y2
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@property
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def w(self):
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return self.__w
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@property
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def h(self):
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return self.__h
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def __str__(self):
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return dumps(self.json())
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def __repr__(self):
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return str(self)
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def __iter__(self):
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return list(self.json().values()).__iter__()
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def __eq__(self, other: Rectangle):
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return all([self.x1 == other.x1, self.y1 == other.y1, self.w == other.w, self.h == other.h])
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def __hash__(self):
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return hash((self.x1, self.y1, self.x2, self.y2))
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@classmethod
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def from_xyxy(cls, xyxy: Iterable[Coord], discrete=True):
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"""Creates a rectangle from two points."""
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return cls(*xyxy, discrete=discrete)
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@classmethod
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def from_xywh(cls, xywh: Iterable[Coord], discrete=True):
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"""Creates a rectangle from a point and a width and height."""
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x1, y1, w, h = xywh
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x2 = x1 + w
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y2 = y1 + h
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return cls(x1, y1, x2, y2, discrete=discrete)
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@classmethod
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def from_dict_xywh(cls, xywh: Dict[str, Coord], discrete=True):
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"""Creates a rectangle from a point and a width and height."""
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x1, y1, w, h = itemgetter("x", "y", "width", "height")(xywh)
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x2 = x1 + w
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y2 = y1 + h
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return cls(x1, y1, x2, y2, discrete=discrete)
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def xyxy(self):
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return self.x1, self.y1, self.x2, self.y2
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def xywh(self):
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return self.x1, self.y1, self.w, self.h
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def json(self):
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return self.json_xywh()
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def json_full(self):
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return {**self.json_xyxy(), "width": self.w, "height": self.h}
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def json_xyxy(self):
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return {"x1": self.x1, "y1": self.y1, "x2": self.x2, "y2": self.y2}
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def json_xywh(self):
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return {"x": self.x1, "y": self.y1, "width": self.w, "height": self.h}
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def intersection(self, other):
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"""Calculates the intersection of this and another rectangle."""
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return intersection(self, other)
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def area(self):
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"""Calculates the area of this rectangle."""
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return area(self)
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def iou(self, other: Rectangle):
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"""Calculates the intersection over union of this and another rectangle."""
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return iou(self, other)
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def includes(self, other: Rectangle, tol=3):
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"""Checks if this rectangle contains another."""
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return contains(self, other, tol)
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def is_included(self, rectangles: Iterable[Rectangle]):
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"""Checks if this rectangle is contained by any of the given rectangles."""
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return is_contained(self, rectangles)
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def adjacent(self, other: Rectangle, tolerance=7):
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"""Checks if this rectangle is adjacent to another."""
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return adjacent(self, other, tolerance)
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