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_coordinates.py
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2# Developed for the LSST Data Management System.
3# This product includes software developed by the LSST Project
4# (https://www.lsst.org).
5# See the COPYRIGHT file at the top-level directory of this distribution
6# for details of code ownership.
7#
8# This program is free software: you can redistribute it and/or modify
9# it under the terms of the GNU General Public License as published by
10# the Free Software Foundation, either version 3 of the License, or
11# (at your option) any later version.
12#
13# This program is distributed in the hope that it will be useful,
14# but WITHOUT ANY WARRANTY; without even the implied warranty of
15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16# GNU General Public License for more details.
17#
18# You should have received a copy of the GNU General Public License
19# along with this program. If not, see <https://www.gnu.org/licenses/>.
20#
21
22__all__ = ["CoordinateExpr", "Extent", "ExtentI", "ExtentD",
23 "Point", "PointI", "PointD"]
24
25import math
26
27from lsst.utils import TemplateMeta
28
29from . import _geom
30
31
33 return "({})".format(", ".join("%0.5g" % v for v in self))
34
35
37 return "{}({})".format(type(self).__name__,
38 ", ".join(f"{v:0.17g}" if math.isfinite(v) else f"float('{v}')" for v in self))
39
40
42 return (type(self), tuple(self))
43
44
46 for i in range(self.dimensions):
47 yield self[i]
48
49
50class CoordinateExpr(metaclass=TemplateMeta):
51 """Abstract base class and factory for CoordinateExpr objects.
52 """
53 TEMPLATE_PARAMS = ("dimensions", )
54
55 __str__ = _coordinateStr
56 __repr__ = _coordinateRepr
57 __reduce__ = _coordinateReduce
58 __iter__ = _coordinateIter
59
60
61CoordinateExpr.register(2, _geom.CoordinateExpr2)
62CoordinateExpr.register(3, _geom.CoordinateExpr3)
63
64
65class Extent(metaclass=TemplateMeta):
66 """Abstract base class and factory for Extent objects.
67 """
68 TEMPLATE_PARAMS = ("dtype", "dimensions")
69 TEMPLATE_DEFAULTS = (None, 2)
70
71 __str__ = _coordinateStr
72 __repr__ = _coordinateRepr
73 __reduce__ = _coordinateReduce
74 __iter__ = _coordinateIter
75
76
77Extent.register((int, 2), _geom.Extent2I)
78Extent.register((float, 2), _geom.Extent2D)
79Extent.register((int, 3), _geom.Extent3I)
80Extent.register((float, 3), _geom.Extent3D)
81ExtentI = _geom.Extent2I
82ExtentD = _geom.Extent2D
83
84
85class Point(metaclass=TemplateMeta):
86 """Abstract base class and factory for Point objects.
87 """
88 TEMPLATE_PARAMS = ("dtype", "dimensions")
89 TEMPLATE_DEFAULTS = (None, 2)
90
91 __str__ = _coordinateStr
92 __repr__ = _coordinateRepr
93 __reduce__ = _coordinateReduce
94 __iter__ = _coordinateIter
95
96
97Point.register((int, 2), _geom.Point2I)
98Point.register((float, 2), _geom.Point2D)
99Point.register((int, 3), _geom.Point3I)
100Point.register((float, 3), _geom.Point3D)
101PointI = _geom.Point2I
102PointD = _geom.Point2D