LSST Applications  21.0.0-147-g0e635eb1+1acddb5be5,22.0.0+052faf71bd,22.0.0+1ea9a8b2b2,22.0.0+6312710a6c,22.0.0+729191ecac,22.0.0+7589c3a021,22.0.0+9f079a9461,22.0.1-1-g7d6de66+b8044ec9de,22.0.1-1-g87000a6+536b1ee016,22.0.1-1-g8e32f31+6312710a6c,22.0.1-10-gd060f87+016f7cdc03,22.0.1-12-g9c3108e+df145f6f68,22.0.1-16-g314fa6d+c825727ab8,22.0.1-19-g93a5c75+d23f2fb6d8,22.0.1-19-gb93eaa13+aab3ef7709,22.0.1-2-g8ef0a89+b8044ec9de,22.0.1-2-g92698f7+9f079a9461,22.0.1-2-ga9b0f51+052faf71bd,22.0.1-2-gac51dbf+052faf71bd,22.0.1-2-gb66926d+6312710a6c,22.0.1-2-gcb770ba+09e3807989,22.0.1-20-g32debb5+b8044ec9de,22.0.1-23-gc2439a9a+fb0756638e,22.0.1-3-g496fd5d+09117f784f,22.0.1-3-g59f966b+1e6ba2c031,22.0.1-3-g849a1b8+f8b568069f,22.0.1-3-gaaec9c0+c5c846a8b1,22.0.1-32-g5ddfab5d3+60ce4897b0,22.0.1-4-g037fbe1+64e601228d,22.0.1-4-g8623105+b8044ec9de,22.0.1-5-g096abc9+d18c45d440,22.0.1-5-g15c806e+57f5c03693,22.0.1-7-gba73697+57f5c03693,master-g6e05de7fdc+c1283a92b8,master-g72cdda8301+729191ecac,w.2021.39
LSST Data Management Base Package
Point.cc
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1 /*
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 #include <cmath>
23 
24 #include "lsst/utils/hashCombine.h"
25 #include "lsst/geom/Point.h"
26 
27 namespace lsst {
28 namespace geom {
29 namespace detail {
30 
31 template <typename T>
32 struct PointSpecialized {};
33 
34 template <>
35 struct PointSpecialized<int> {
36  template <typename U>
37  static int convert(U scalar) {
38  return static_cast<int>(std::floor(scalar + 0.5));
39  }
40 };
41 
42 template <>
43 struct PointSpecialized<double> {
44  template <typename U>
45  static double convert(U scalar) {
46  return static_cast<double>(scalar);
47  }
48 };
49 } // namespace detail
50 
51 template <typename T, int N>
52 template <typename U>
53 Point<T, N>::Point(Point<U, N> const &other) noexcept(IS_NOTHROW_CONVERTIBLE<T, U>) : Super() {
54  for (int n = 0; n < N; ++n) {
55  this->_vector[n] = detail::PointSpecialized<T>::template convert<U>(other[n]);
56  }
57 }
58 
59 template <typename T>
60 template <typename U>
61 Point<T, 2>::Point(Point<U, 2> const &other) noexcept(IS_NOTHROW_CONVERTIBLE<T, U>) : Super() {
62  for (int n = 0; n < 2; ++n) {
63  this->_vector[n] = detail::PointSpecialized<T>::template convert<U>(other[n]);
64  }
65 }
66 
67 template <typename T>
68 template <typename U>
69 Point<T, 3>::Point(Point<U, 3> const &other) noexcept(IS_NOTHROW_CONVERTIBLE<T, U>) : Super() {
70  for (int n = 0; n < 3; ++n) {
71  this->_vector[n] = detail::PointSpecialized<T>::template convert<U>(other[n]);
72  }
73 }
74 
75 template <typename T, int N>
76 CoordinateExpr<N> PointBase<T, N>::eq(Point<T, N> const &other) const noexcept {
78  for (int n = 0; n < N; ++n) r[n] = this->_vector[n] == other[n];
79  return r;
80 }
81 
82 template <typename T, int N>
83 CoordinateExpr<N> PointBase<T, N>::ne(Point<T, N> const &other) const noexcept {
85  for (int n = 0; n < N; ++n) r[n] = this->_vector[n] != other[n];
86  return r;
87 }
88 
89 template <typename T, int N>
90 CoordinateExpr<N> PointBase<T, N>::lt(Point<T, N> const &other) const noexcept {
92  for (int n = 0; n < N; ++n) r[n] = this->_vector[n] < other[n];
93  return r;
94 }
95 
96 template <typename T, int N>
97 CoordinateExpr<N> PointBase<T, N>::le(Point<T, N> const &other) const noexcept {
99  for (int n = 0; n < N; ++n) r[n] = this->_vector[n] <= other[n];
100  return r;
101 }
102 
103 template <typename T, int N>
104 CoordinateExpr<N> PointBase<T, N>::gt(Point<T, N> const &other) const noexcept {
106  for (int n = 0; n < N; ++n) r[n] = this->_vector[n] > other[n];
107  return r;
108 }
109 
110 template <typename T, int N>
111 CoordinateExpr<N> PointBase<T, N>::ge(Point<T, N> const &other) const noexcept {
113  for (int n = 0; n < N; ++n) r[n] = this->_vector[n] >= other[n];
114  return r;
115 }
116 
117 template <typename T, int N>
118 std::size_t hash_value(Point<T, N> const &point) noexcept {
119  std::size_t result = 0; // Completely arbitrary seed
120  for (int n = 0; n < N; ++n) result = utils::hashCombine(result, point[n]);
121  return result;
122 }
123 
124 #ifndef DOXYGEN
125 #define INSTANTIATE_TYPE_DIM(TYPE, DIM) \
126  template class PointBase<TYPE, DIM>; \
127  template class Point<TYPE, DIM>; \
128  template std::size_t hash_value(Point<TYPE, DIM> const &);
129 #define INSTANTIATE_DIM(DIM) \
130  INSTANTIATE_TYPE_DIM(int, DIM); \
131  INSTANTIATE_TYPE_DIM(double, DIM); \
132  template Point<int, DIM>::Point(Point<double, DIM> const &); \
133  template Point<double, DIM>::Point(Point<int, DIM> const &);
134 
135 INSTANTIATE_DIM(2);
136 INSTANTIATE_DIM(3);
137 #endif
138 
139 } // namespace geom
140 } // namespace lsst
py::object result
Definition: _schema.cc:429
A boolean coordinate.
CoordinateExpr< N > ne(Point< T, N > const &other) const noexcept
Definition: Point.cc:83
CoordinateExpr< N > lt(Point< T, N > const &other) const noexcept
Definition: Point.cc:90
CoordinateExpr< N > le(Point< T, N > const &other) const noexcept
Definition: Point.cc:97
CoordinateExpr< N > ge(Point< T, N > const &other) const noexcept
Definition: Point.cc:111
CoordinateExpr< N > gt(Point< T, N > const &other) const noexcept
Definition: Point.cc:104
CoordinateExpr< N > eq(Point< T, N > const &other) const noexcept
Definition: Point.cc:76
A coordinate class intended to represent absolute positions.
Definition: Point.h:169
Point(T val=static_cast< T >(0)) noexcept(Super::IS_ELEMENT_NOTHROW_COPYABLE)
Construct a Point with all elements set to the same scalar value.
Definition: Point.h:176
T floor(T... args)
std::size_t hashCombine(std::size_t seed) noexcept
Combine hashes.
Definition: hashCombine.h:35
std::size_t hash_value(Extent< T, N > const &extent) noexcept
Definition: Extent.cc:127
A base class for image defects.