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matrix_dimension_holders.h
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1/* This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
2 * See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
3 * Author(s): Hannah Schreiber
4 *
5 * Copyright (C) 2022-24 Inria
6 *
7 * Modification(s):
8 * - YYYY/MM Author: Description of the modification
9 */
10
18#ifndef PM_MATRIX_DIM_HOLDER_H
19#define PM_MATRIX_DIM_HOLDER_H
20
21#include <utility> //std::swap, std::move & std::exchange
22#include <vector>
23
24namespace Gudhi {
25namespace persistence_matrix {
26
35 template <typename dimension_type>
36 Dummy_matrix_dimension_holder([[maybe_unused]] dimension_type maximalDimension) {}
37
38 friend void swap([[maybe_unused]] Dummy_matrix_dimension_holder& d1,
39 [[maybe_unused]] Dummy_matrix_dimension_holder& d2) {}
40};
41
51template <typename dimension_type>
53{
54 public:
60 Matrix_max_dimension_holder(dimension_type maximalDimension = -1) : maxDim_(maximalDimension){};
66 Matrix_max_dimension_holder(const Matrix_max_dimension_holder& toCopy) : maxDim_(toCopy.maxDim_){};
73 : maxDim_(std::exchange(other.maxDim_, -1)){};
74
80 dimension_type get_max_dimension() const { return maxDim_; };
81
86 std::swap(maxDim_, other.maxDim_);
87 return *this;
88 };
93 std::swap(matrix1.maxDim_, matrix2.maxDim_);
94 }
95
96 protected:
97 dimension_type maxDim_;
99 void update_up(dimension_type dimension) {
100 if (maxDim_ == -1 || maxDim_ < dimension) maxDim_ = dimension;
101 };
102};
103
113template <typename dimension_type>
115{
116 public:
122 Matrix_all_dimension_holder(dimension_type maximalDimension = -1)
123 : dimensions_(maximalDimension < 0 ? 0 : maximalDimension + 1, 0), maxDim_(maximalDimension) {
124 if (maxDim_ != -1) dimensions_[maxDim_] = 1;
125 };
132 : dimensions_(toCopy.dimensions_), maxDim_(toCopy.maxDim_){};
139 : dimensions_(std::move(other.dimensions_)), maxDim_(std::exchange(other.maxDim_, -1)){};
140
146 dimension_type get_max_dimension() const { return maxDim_; };
147
152 std::swap(maxDim_, other.maxDim_);
153 dimensions_.swap(other.dimensions_);
154 return *this;
155 };
160 std::swap(matrix1.maxDim_, matrix2.maxDim_);
161 matrix1.dimensions_.swap(matrix2.dimensions_);
162 }
163
164 protected:
165 std::vector<unsigned int> dimensions_;
166 dimension_type maxDim_;
168 void update_up(unsigned int dimension) {
169 if (dimensions_.size() <= dimension) dimensions_.resize(dimension + 1, 0);
170 ++(dimensions_[dimension]);
171 maxDim_ = dimensions_.size() - 1;
172 };
173
174 void update_down(unsigned int dimension) {
175 --(dimensions_[dimension]); // assumes dimension already exists and is not 0
176 while (!dimensions_.empty() && dimensions_.back() == 0) dimensions_.pop_back();
177 maxDim_ = dimensions_.size() - 1;
178 };
179};
180
181} // namespace persistence_matrix
182} // namespace Gudhi
183
184#endif // PM_MATRIX_DIM_HOLDER_H
Class managing the maximal dimension of a face represented in the inheritating matrix,...
Definition matrix_dimension_holders.h:115
Matrix_all_dimension_holder & operator=(Matrix_all_dimension_holder other)
Assign operator.
Definition matrix_dimension_holders.h:151
Matrix_all_dimension_holder(const Matrix_all_dimension_holder &toCopy)
Copy constructor.
Definition matrix_dimension_holders.h:131
dimension_type get_max_dimension() const
Returns the maximal dimension of a face represented in the matrix.
Definition matrix_dimension_holders.h:146
friend void swap(Matrix_all_dimension_holder &matrix1, Matrix_all_dimension_holder &matrix2)
Swap operator.
Definition matrix_dimension_holders.h:159
Matrix_all_dimension_holder(Matrix_all_dimension_holder &&other) noexcept
Move constructor.
Definition matrix_dimension_holders.h:138
Matrix_all_dimension_holder(dimension_type maximalDimension=-1)
Default constructor. If a dimension is specified, stores it as the maximal value.
Definition matrix_dimension_holders.h:122
Class managing the maximal dimension of a face represented in the inheritating matrix,...
Definition matrix_dimension_holders.h:53
friend void swap(Matrix_max_dimension_holder &matrix1, Matrix_max_dimension_holder &matrix2)
Swap operator.
Definition matrix_dimension_holders.h:92
Matrix_max_dimension_holder(dimension_type maximalDimension=-1)
Default constructor. If a dimension is specified, stores it as the maximal value.
Definition matrix_dimension_holders.h:60
Matrix_max_dimension_holder(Matrix_max_dimension_holder &&other) noexcept
Move constructor.
Definition matrix_dimension_holders.h:72
Matrix_max_dimension_holder(const Matrix_max_dimension_holder &toCopy)
Copy constructor.
Definition matrix_dimension_holders.h:66
dimension_type get_max_dimension() const
Returns the maximal dimension of a face represented in the matrix.
Definition matrix_dimension_holders.h:80
Matrix_max_dimension_holder & operator=(const Matrix_max_dimension_holder &other)
Assign operator.
Definition matrix_dimension_holders.h:85
Gudhi namespace.
Definition SimplicialComplexForAlpha.h:14
Empty structure. Inheritated instead of Matrix_max_dimension_holder or Matrix_all_dimension_holder,...
Definition matrix_dimension_holders.h:34