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Add functionality for saving states to the OSFLS format

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This commit is contained in:
Oskar Carlbaum
2017-10-04 14:56:47 +02:00
parent 84a511a1fc
commit d9268593ce
2 changed files with 63 additions and 0 deletions
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62
modules/fieldlinessequence/util/fieldlinesstate.cpp
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@@ -193,6 +193,68 @@ bool FieldlinesState::loadStateFromJson(const std::string& PATH_TO_JSON_FILE,
return true;
}
/**
* @param ABS_FILEPATH must be the path to the file (incl. filename but excl. extension!)
* Directory must exist! File is created (or overwritten if already existing).
* File is structured like this: (for version 0)
* 0. int - version number of binary state file! (in case something needs to be altered in the future, then increase CURRENT_VERSION)
* 1. double - _triggerTime
* 2. int - _model
* 3. bool - _isMorphable
* 4. size_t - Number of lines in the state == _lineStart.size() == _lineCount.size()
* 5. size_t - Total number of vertex points == _vertexPositions.size() == _extraQuantities[i].size()
* 6. size_t - Number of extra quantites == _extraQuantities.size() == _extraQuantityNames.size()
* 7. site_t - Number of total bytes that ALL _extraQuantityNames consists of (Each such name is stored as a c_str which means it ends with the null char '\0' )
* 7. std::vector<GLint> - _lineStart
* 8. std::vector<GLsizei> - _lineCount
* 9. std::vector<glm::vec3> - _vertexPositions
* 10. std::vector<float> - _extraQuantities
* 11. array of c_str - Strings naming the extra quantities (elements of _extraQuantityNames). Each string ends with null char '\0'
*/
void FieldlinesState::saveStateToOsfls(const std::string& ABS_FILEPATH) {
// Create the file
const std::string EXT = ".osfls";
std::ofstream ofs(ABS_FILEPATH + EXT, std::ofstream::binary | std::ofstream::trunc);
if (!ofs.is_open()) {
LERROR("Failed to save state to binary file: " << ABS_FILEPATH << EXT);
return;
}
std::string allExtraQuantityNamesInOne = "";
for (std::string str : _extraQuantityNames) {
allExtraQuantityNamesInOne += str + '\0'; // Add the null char '\0' for easier reading
}
const size_t N_LINES = _lineStart.size();
const size_t N_POINTS = _vertexPositions.size();
const size_t N_EXTRAS = _extraQuantities.size();
const size_t N_STRING_BYTES = allExtraQuantityNamesInOne.size();
//------------------------------ WRITE EVERYTHING TO FILE ------------------------------
// WHICH VERSION OF BINARY FIELDLINES STATE FILE - IN CASE STRUCTURE CHANGES IN THE FUTURE
ofs.write( (char*)(&CURRENT_VERSION), sizeof( int ) );
//-------------------- WRITE META DATA FOR STATE --------------------------------
ofs.write( reinterpret_cast<char*>(&_triggerTime), sizeof( _triggerTime ) );
ofs.write( reinterpret_cast<char*>(&_model), sizeof( int ) );
ofs.write( reinterpret_cast<char*>(&_isMorphable), sizeof( bool ) );
ofs.write( reinterpret_cast<const char*>(&N_LINES), sizeof( size_t ) );
ofs.write( reinterpret_cast<const char*>(&N_POINTS), sizeof( size_t ) );
ofs.write( reinterpret_cast<const char*>(&N_EXTRAS), sizeof( size_t ) );
ofs.write( reinterpret_cast<const char*>(&N_STRING_BYTES), sizeof( size_t ) );
//---------------------- WRITE ALL ARRAYS OF DATA --------------------------------
ofs.write( reinterpret_cast<char*>(_lineStart.data()), sizeof(GLint) * N_LINES);
ofs.write( reinterpret_cast<char*>(_lineCount.data()), sizeof(GLsizei) * N_LINES);
ofs.write( reinterpret_cast<char*>(_vertexPositions.data()), sizeof(glm::vec3) * N_POINTS);
// Write the data for each vector in _extraQuantities
for (std::vector<float>& vec : _extraQuantities) {
ofs.write( reinterpret_cast<char*>(vec.data()), sizeof(float) * N_POINTS);
}
ofs.write( allExtraQuantityNamesInOne.c_str(), N_STRING_BYTES);
}
// TODO: This should probably be rewritten, but this is the way the files were structured by CCMC
// Structure of File! NO TRAILING COMMAS ALLOWED!
// Additional info can be stored within each line as the code only extracts the keys it needs (time, trace & data)

1
modules/fieldlinessequence/util/fieldlinesstate.h
View File

@@ -43,6 +43,7 @@ public:
FieldlinesState(const std::string& PATH_TO_OSFLS_FILE, bool& loadSucessful);
bool loadStateFromOsfls(const std::string& PATH_TO_OSFLS_FILE);
void saveStateToOsfls(const std::string& PATH_TO_OSFLS_FILE);
bool loadStateFromJson(const std::string& PATH_TO_JSON_FILE,
const fls::Model MODEL, const float COORD_TO_METERS);