Chaste Commit::baa90ac2819b962188b7562f2326be23c47859a7
AbstractCachedMeshReader.cpp
1/*
2
3Copyright (c) 2005-2024, University of Oxford.
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10This file is part of Chaste.
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15 this list of conditions and the following disclaimer.
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34*/
35
36#include "AbstractCachedMeshReader.hpp"
37#include "Exception.hpp"
38
39#include <fstream>
40
42// Implementation
44
45template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
47 : mNumNodeAttributes(0),
48 mMaxNodeBdyMarker(0),
49 mNumElementNodes(0),
50 mNumElementAttributes(0),
51 mMaxFaceBdyMarker(0),
52 mIndexFromZero(false) // Initially assume that nodes are not numbered from zero
53{
54 // We have initialized all numeric variables to zero
55}
56
57template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
59 const std::string& rFileName)
60{
61 // Open raw data file
62
63 std::vector<std::string> raw_data;
64 std::ifstream data_file(rFileName.c_str());
65
66 // Checks that input file has been opened correctly. If not throws an
67 // exception that should be caught by the user.
68 if (!data_file.is_open())
69 {
70 EXCEPTION("Could not open data file " + rFileName);
71 }
72
73 // Read each line in turn
74 std::string raw_line;
75 getline(data_file, raw_line);
76
77 while (data_file)
78 {
79 // Remove comments (everything from a hash to the end of the line)
80 // If there is no hash, then hashLocation = string::npos = -1 = 4294967295 = UINT_MAX
81 // (so it works with unsigneds but is a little nasty)
82 long hash_location = raw_line.find('#', 0);
83 if (hash_location >= 0)
84 {
85 raw_line = raw_line.substr(0, hash_location);
86 }
87 // Remove blank lines. This is unnecessary, since the tokenizer will
88 // ignore blank lines anyway.
89 long not_blank_location = raw_line.find_first_not_of(" \t", 0);
90 if (not_blank_location >= 0)
91 {
92 raw_data.push_back(raw_line);
93 }
94
95 // Move onto next line
96 getline(data_file, raw_line);
97 }
98
99 data_file.close(); // Closes the data file
100 return raw_data;
101}
102
103template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
105{
106 // Initialize an interator for the vector of nodes
107 std::vector<std::vector<unsigned> >::iterator the_iterator;
108
109 unsigned max_node_index = 0; // Nice if it were negative
110
111 for (the_iterator = mElementData.begin(); the_iterator < mElementData.end(); the_iterator++)
112 {
113 std::vector<unsigned> indices = *the_iterator; // the_iterator points at each line in turn
114
115 for (unsigned i = 0; i < ELEMENT_DIM+1; i++)
116 {
117 if (indices[i] > max_node_index)
118 {
119 max_node_index = indices[i];
120 }
121 }
122 }
123
124 return max_node_index;
125}
126
127template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
129{
130 // Initialize an interator for the vector of nodes
131 std::vector<std::vector<unsigned> >::iterator the_iterator;
132
133 unsigned min_node_index = UINT_MAX; // A large integer
134
135 for (the_iterator = mElementData.begin(); the_iterator < mElementData.end(); the_iterator++)
136 {
137 std::vector<unsigned> indices = *the_iterator; // the_iterator points at each line in turn
138
139 for (unsigned i = 0; i < ELEMENT_DIM+1; i++)
140 {
141 if (indices[i] < min_node_index)
142 {
143 min_node_index = indices[i];
144 }
145 }
146 }
147
148 return min_node_index;
149}
150
151template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
153{
154 // Checks that there are still some nodes left to read. If not throws an
155 // exception that must be caught by the user.
156 if (mpNodeIterator == mNodeData.end())
157 {
158 EXCEPTION("All nodes already got");
159 }
160
161 std::vector<double> next_node = *mpNodeIterator;
162
163 mpNodeIterator++;
164
165 return next_node;
166}
167
168template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
170{
171 // Checks that there are still some elements left to read. If not throws an
172 // exception that must be caught by the user.
173 if (mpElementIterator == mElementData.end())
174 {
175 EXCEPTION("All elements already got");
176 }
177
178 ElementData ret;
179 ret.NodeIndices = *mpElementIterator;
180 ret.AttributeValue = 0;
181
182 mpElementIterator++;
183
184 return ret;
185}
186
187template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
189{
190 mpElementIterator = mElementData.begin();
191 mpFaceIterator = mFaceData.begin();
192 mpNodeIterator = mNodeData.begin();
193}
194
195template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
197{
198 // Checks that there are still some faces left to read. If not throws an
199 // exception that must be caught by the user.
200 if (mpFaceIterator == mFaceData.end())
201 {
202 EXCEPTION("All faces (or edges) already got");
203 }
204
205 ElementData ret;
206 ret.NodeIndices = *mpFaceIterator;
207 ret.AttributeValue = 0;
208
209 mpFaceIterator++;
210
211 return ret;
212}
213
214template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
216{
217 return mElementData.size();
218}
219
220template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
222{
223 return mNodeData.size();
224}
225
226template<unsigned ELEMENT_DIM, unsigned SPACE_DIM>
228{
229 return mFaceData.size();
230}
231
232// Explicit instantiation
233template class AbstractCachedMeshReader<1,1>;
234template class AbstractCachedMeshReader<1,2>;
235template class AbstractCachedMeshReader<1,3>;
236template class AbstractCachedMeshReader<2,2>;
237template class AbstractCachedMeshReader<2,3>;
238template class AbstractCachedMeshReader<3,3>;
#define EXCEPTION(message)
std::vector< double > GetNextNode()
std::vector< std::string > GetRawDataFromFile(const std::string &rFileName)
std::vector< unsigned > NodeIndices