TRIsurfaceFormatCore.C
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25 
26 #include "TRIsurfaceFormat.H"
27 #include "IFstream.H"
28 #include "IOmanip.H"
29 #include "IStringStream.H"
30 #include "Map.H"
31 
32 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
33 
35 (
36  const fileName& filename
37 )
38 :
39  sorted_(true),
40  points_(0),
41  zoneIds_(0),
42  sizes_(0)
43 {
44  read(filename);
45 }
46 
47 
48 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
49 
51 {}
52 
53 
54 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
55 
56 bool Foam::fileFormats::TRIsurfaceFormatCore::read
57 (
58  const fileName& filename
59 )
60 {
61  this->clear();
62  sorted_ = true;
63 
64  IFstream is(filename);
65  if (!is.good())
66  {
68  << "Cannot read file " << filename
69  << exit(FatalError);
70  }
71 
72  // uses similar structure as STL, just some points
73  // the rest of the reader resembles the STL binary reader
74  DynamicList<point> dynPoints;
75  DynamicList<label> dynZones;
76  DynamicList<label> dynSizes;
78 
79  // place faces without a group in zone0
80  label zoneI = 0;
81  dynSizes.append(zoneI);
82  lookup.insert("zoneI", zoneI);
83 
84  while (is.good())
85  {
86  string line = this->getLineNoComment(is);
87 
88  // handle continuations ?
89  // if (line[line.size()-1] == '\\')
90  // {
91  // line.substr(0, line.size()-1);
92  // line += this->getLineNoComment(is);
93  // }
94 
95  IStringStream lineStream(line);
96 
97  point p
98  (
99  readScalar(lineStream),
100  readScalar(lineStream),
101  readScalar(lineStream)
102  );
103 
104  if (!lineStream) break;
105 
106  dynPoints.append(p);
107  dynPoints.append
108  (
109  point
110  (
111  readScalar(lineStream),
112  readScalar(lineStream),
113  readScalar(lineStream)
114  )
115  );
116  dynPoints.append
117  (
118  point
119  (
120  readScalar(lineStream),
121  readScalar(lineStream),
122  readScalar(lineStream)
123  )
124  );
125 
126  // zone/colour in .tri file starts with 0x. Skip.
127  // ie, instead of having 0xFF, skip 0 and leave xFF to
128  // get read as a word and name it "zoneFF"
129 
130  char zero;
131  lineStream >> zero;
132 
133  word rawName(lineStream);
134  word name("zone" + rawName(1, rawName.size()-1));
135 
136  HashTable<label>::const_iterator fnd = lookup.find(name);
137  if (fnd != lookup.end())
138  {
139  if (zoneI != fnd())
140  {
141  // group appeared out of order
142  sorted_ = false;
143  }
144  zoneI = fnd();
145  }
146  else
147  {
148  zoneI = dynSizes.size();
149  lookup.insert(name, zoneI);
150  dynSizes.append(0);
151  }
152 
153  dynZones.append(zoneI);
154  dynSizes[zoneI]++;
155  }
156 
157  // skip empty groups
158  label nZone = 0;
159  forAll(dynSizes, zoneI)
160  {
161  if (dynSizes[zoneI])
162  {
163  if (nZone != zoneI)
164  {
165  dynSizes[nZone] = dynSizes[zoneI];
166  }
167  nZone++;
168  }
169  }
170  // truncate addressed size
171  dynSizes.setCapacity(nZone);
172 
173  // transfer to normal lists
174  points_.transfer(dynPoints);
175  zoneIds_.transfer(dynZones);
176  sizes_.transfer(dynSizes);
177 
178  return true;
179 }
180 
181 
182 // ************************************************************************* //
#define forAll(list, i)
Loop across all elements in list.
Definition: UList.H:434
intWM_LABEL_SIZE_t label
A label is an int32_t or int64_t as specified by the pre-processor macro WM_LABEL_SIZE.
Definition: label.H:59
A line primitive.
Definition: line.H:56
A class for handling file names.
Definition: fileName.H:79
errorManipArg< error, int > exit(error &err, const int errNo=1)
Definition: errorManip.H:124
static iteratorEnd end()
iteratorEnd set to beyond the end of any HashTable
Definition: HashTable.H:112
error FatalError
#define FatalErrorInFunction
Report an error message using Foam::FatalError.
Definition: error.H:319
void size(const label)
Override size to be inconsistent with allocated storage.
Definition: ListI.H:163
static string getLineNoComment(IFstream &)
Read non-comment line.
void read(Istream &, label &, const dictionary &)
In-place read with dictionary lookup.
bool good() const
Return true if next operation might succeed.
Definition: IOstream.H:333
bool insert(const Key &, const T &newElmt)
Insert a new hashedEntry.
Definition: HashTableI.H:80
iterator find(const Key &)
Find and return an iterator set at the hashedEntry.
Definition: HashTable.C:142
stressControl lookup("compactNormalStress") >> compactNormalStress
A 1D vector of objects of type <T> that resizes itself as necessary to accept the new objects...
Definition: DynamicList.H:56
A class for handling words, derived from string.
Definition: word.H:59
void setCapacity(const label)
Alter the size of the underlying storage.
Definition: DynamicListI.H:130
DynamicList< T, SizeInc, SizeMult, SizeDiv > & append(const T &)
Append an element at the end of the list.
Definition: DynamicListI.H:296
bool readScalar(const char *buf, doubleScalar &s)
Read whole of buf as a scalar. Return true if successful.
Definition: doubleScalar.H:68
Istream and Ostream manipulators taking arguments.
Input from file stream.
Definition: IFstream.H:81
word name(const complex &)
Return a string representation of a complex.
Definition: complex.C:47
Input from memory buffer stream.
Definition: IStringStream.H:49
TRIsurfaceFormatCore(const fileName &)
Read from file, filling in the information.
A class representing the concept of 0 used to avoid unnecessary manipulations for objects that are kn...
Definition: zero.H:49
volScalarField & p
void transfer(List< T > &)
Transfer the contents of the argument List into this list.
Definition: List.C:342