Maybe<Real> NewtonPolySolve::FindSmallestPositiveRoot(const RPolynomial& p, const Real /*lastSmallestPositive*/) {
if (NumberOfSignChanges(p) == 0)
return Maybe<Real>();
const CPolynomial q(p);
//{
// bool converged;
// RPolynomial t = RPolynomial::MakeT();
// Scalar x = NextRoot(q, Scalar(lastSmallestPositive), &converged);
// if (converged && IsReal(x) && x.real() > 0 && NumberOfSignChanges(p.EvaluateAt(t + x.real() + .1)) == 0)
// return x.real();
// /*if (converged && )
// return x;*/
//}
const ScalarList roots = FindRoots(q);
Maybe<Real> result;
for (int i = 0 ; i < (int)roots.size() ; i++) {
if (IsReal(roots[i]) && roots[i].real() > 0) {
if (result.IsValid()) {
result = std::min(result.Get(), roots[i].real());
} else {
result = roots[i].real();
}
}
}
return result;
}
//----------------------------------------------------------------------------
void EvaluatorVisitor::visit( const AST::FunctionExpression* const node )
{
ScalarList evaluatedArgs;
AST::NodeList params = node->getParameterList();
for ( unsigned int i = 0; i < params.size(); ++i )
{
AST::INode* argNode = params[ i ];
argNode->accept( this );
evaluatedArgs.push_back( mBranchValue );
}
//process function
mSymbolTable.evaluateFunction( mBranchValue, node->getName(), evaluatedArgs );
}
ScalarList NewtonPolySolve::FindRoots(const CPolynomial& poly, const ScalarList& guessListIn) {
if (poly.Degree() == 0) {
if (poly[0] == Scalar(0))
return ScalarList(1,0);
else
throw Exception("No solution");
}
Scalar x(0);
ScalarList guessList = guessListIn;
if (!guessList.empty()) {
x = guessList.back();
guessList.pop_back();
}
bool converged;
x = NextRoot(poly, x, &converged);
ScalarList answers;
if (poly.Degree() > 1)
ScalarList answers = FindRoots(poly.RemoveRoot(x), guessList);
answers.push_back(x);
return answers;
}
//---------------------------------------------------------------------------------
void SymbolTable::evaluateFunction( AST::ConstantExpression& result, const String& name, const ScalarList& evaluatedArgs )
{
String funcname = name;
const FunctionInfo* fi = getFunction( funcname );
if ( !fi )
{
// note: getFunction( funcname ); calls errorHandler
return;
}
if ( fi->argc >= -1 ) // -1 means any parameter count
{
if ( fi->argc == 0 && evaluatedArgs.size() != 0 )
{
//@todo BadFunctionCallException
if ( mErrorHandler )
{
Error err( Error::ERR_INVALIDPARAMS, "Function " + funcname + "() does not take any parameter." );
mErrorHandler->handleError( &err );
}
}
else if ( fi->argc == 1 && evaluatedArgs.size() != 1 )
{
//@todo BadFunctionCallException
if ( mErrorHandler )
{
Error err( Error::ERR_INVALIDPARAMS, "Function " + funcname + "() takes exactly one parameter." );
mErrorHandler->handleError( &err );
}
}
else if ( fi->argc == -1 )
{
// ok
}
else if ( static_cast<unsigned int>( fi->argc ) != evaluatedArgs.size() )
{
std::ostringstream oss;
oss << "Function " << funcname << "() takes exactly " << fi->argc << " parameters.";
//@todo BadFunctionCallException
if ( mErrorHandler )
{
Error err( Error::ERR_INVALIDPARAMS, oss.str() );
mErrorHandler->handleError( &err );
}
}
fi->func( result, evaluatedArgs, mErrorHandler );
return ;
}
//@todo UnknownSymbolException(std::string("Unknown function ") + funcname + "()"));
if ( mErrorHandler )
{
Error err( Error::ERR_INVALIDPARAMS, "Unknown function " + funcname + "()" );
mErrorHandler->handleError( &err );
}
}
//----------------------------------------------------------------------------
int main(int argc, char **argv)
{
std::cout << "Usage : ASCII2H5Part "
<< "-c full/path/to/.cfg "
<< "-a full/path/to/IdFile for optional point Id flagging "
<< "-t full/path/to/timefile.txt "
<< "-f full/path/to/input/file " << std::endl;
vtkSmartPointer<vtkTesting> test = vtkSmartPointer<vtkTesting>::New();
for (int c=1; c<argc; c++ ) {
test->AddArgument(argv[c]);
}
std::string asciipath, asciiname, errormsg, asciifile, hdf5file, ascii2h5config, ascii2h5IdFile;
// config file
char *cfg_name = vtkTestUtilities::GetArgOrEnvOrDefault("-c", argc, argv, "DUMMY_ENV_VAR", "");
if (vtksys::SystemTools::GetFilenamePath(cfg_name).size()==0) {
std::string cfg_path = vtksys::SystemTools::GetCurrentWorkingDirectory();
ascii2h5config = cfg_path + "/" + cfg_name;
}
else {
ascii2h5config = cfg_name;
}
delete []cfg_name;
//
if (!vtksys::SystemTools::FileExists(ascii2h5config.c_str()) ||
vtksys::SystemTools::FileIsDirectory(ascii2h5config.c_str()))
{
std::cout << "Can't find config file " << ascii2h5config.c_str() << "\n";
return 0;
}
std::cout << "Config file found : " << ascii2h5config.c_str() << "\n";;
// input file
char *filename = vtkTestUtilities::GetArgOrEnvOrDefault("-f", argc, argv, "DUMMY_ENV_VAR", "");
asciipath = vtksys::SystemTools::GetFilenamePath(filename);
asciiname = vtksys::SystemTools::GetFilenameName(filename);
asciifile = asciipath + "/" + asciiname;
delete []filename;
if (!vtksys::SystemTools::FileExists(asciifile.c_str()))
{
std::cout << "Can't find input file " << asciifile.c_str() << "\n";
return 0;
}
std::cout << "Input file found : " << asciifile.c_str() << "\n";;
// Point Id file
char *idf_name = vtkTestUtilities::GetArgOrEnvOrDefault("-a", argc, argv, "DUMMY_ENV_VAR", "");
std::map<long int, double> idMap;
if (vtksys::SystemTools::FileExists(idf_name)) {
ascii2h5IdFile = idf_name;
std::cout << "Using Id file : " << ascii2h5IdFile.c_str() << "\n";
std::ifstream idfile(idf_name);
long int low, high;
double flag;
while (idfile.good()) {
idfile >> low >> high >> flag;
idMap.insert( std::pair<long int,double>(high, flag));
}
}
delete []idf_name;
// time override
bool OverrideTime = false;
double OverrideTimeStep = 0.0;
char *time_steps = vtkTestUtilities::GetArgOrEnvOrDefault("-t", argc, argv, "DUMMY_ENV_VAR", "");
std::string timeoverride = time_steps;
if (timeoverride.size()>0) {
OverrideTime = true;
OverrideTimeStep = atof(timeoverride.c_str());
std::cout << "Time override set to : " << OverrideTimeStep << " per step \n";;
}
delete []time_steps;
//
// generate new h5part file name
//
hdf5file = vtksys::SystemTools::GetFilenameWithoutExtension(asciifile);
hdf5file = asciipath + "/" + hdf5file + ".h5part";
std::cout << "Output HDF5 filename : " << hdf5file.c_str() << "\n";;
//
// Now scan the file names to build up our pattern
//
std::string FieldNames;
std::string FieldIndices;
std::string TimeExpr;
std::string IgnoreExp;
//
std::string FileNamePattern;
std::string PrefixRegEx, BlockRegEx, VarRegEx, ExtRegEx, TimeRegEx, Text0RegEx;
//
int headerlines=0;
int DFormat=0;
// open config file
std::ifstream cfg(ascii2h5config.c_str());
char buf[512];
while (cfg.good()) {
cfg.getline(buf,512);
if (strstr(buf, "FieldNames" )!=0) { cfg.getline(buf,512); FieldNames = buf; }
if (strstr(buf, "FieldIndices")!=0) { cfg.getline(buf,512); FieldIndices = buf; }
if (strstr(buf, "TimeExpr")!=0) { cfg.getline(buf,512); TimeExpr = buf; }
if (strstr(buf, "IgnoreExp")!=0) { cfg.getline(buf,512); IgnoreExp = buf; }
if (strstr(buf, "HeaderLines")!=0) { cfg.getline(buf,512); sscanf(buf,"%i", &headerlines);}
if (strstr(buf, "DFormat")!=0) { cfg.getline(buf,512); sscanf(buf,"%i", &DFormat); }
//
if (strstr(buf, "FileNamePattern")!=0) { cfg.getline(buf,512); FileNamePattern = buf; }
if (strstr(buf, "PREFIX_RegEx")!=0) { cfg.getline(buf,512); PrefixRegEx = buf; }
if (strstr(buf, "BLOCK_RegEx")!=0) { cfg.getline(buf,512); BlockRegEx = buf; }
if (strstr(buf, "VAR_RegEx")!=0) { cfg.getline(buf,512); VarRegEx = buf; }
if (strstr(buf, "EXT_RegEx")!=0) { cfg.getline(buf,512); ExtRegEx = buf; }
if (strstr(buf, "TIME_RegEx")!=0) { cfg.getline(buf,512); TimeRegEx = buf; }
if (strstr(buf, "TEXT0_RegEx")!=0) { cfg.getline(buf,512); Text0RegEx = buf; }
}
//
FileSeriesFinder *Finder = new FileSeriesFinder(FileNamePattern);
Finder->SetPrefixRegEx(PrefixRegEx.c_str());
Finder->SetTimeRegEx(TimeRegEx.c_str());
Finder->SetBlockRegEx(BlockRegEx.c_str());
Finder->SetVarRegEx(VarRegEx.c_str());
Finder->SetExtRegEx(ExtRegEx.c_str());
Finder->SetText0RegEx(Text0RegEx.c_str());
Finder->Scan(asciifile.c_str());
bool multiblock = (Finder->GetNumberOfBlocks()>0);
bool multivar = (Finder->GetNumberOfVars()>0);
bool multitime = (Finder->GetNumberOfTimeSteps()>0);
std::vector<double> time_values;
typedef std::vector< vtkSmartPointer<vtkASCIIParticleReader> > varReader;
typedef std::vector< varReader > blockReader;
blockReader readers;
//
if (multitime) {
Tnum = Finder->GetNumberOfTimeSteps();
Finder->GetTimeValues(time_values);
}
int t=0;
int b=0;
do {
int v=0;
varReader varreaders;
do {
vtkSmartPointer<vtkASCIIParticleReader> reader = vtkSmartPointer<vtkASCIIParticleReader>::New();
varreaders.push_back(reader);
std::string filename = Finder->GenerateFileName(t, b, v);
reader->SetFileName(filename.c_str());
reader->SetFieldNames(FieldNames.c_str());
reader->SetFieldIndices(FieldIndices.c_str());
reader->SetTimeExpression(TimeExpr.c_str());
reader->SetIgnoreExpression(IgnoreExp.c_str());
reader->SetHeaderLines(headerlines);
reader->SetDFormat(DFormat);
reader->SetTimeStep(0);
reader->SetMultiFileScalarMode(multivar);
reader->SetMultiFileCollectNode(multivar && v==0);
if (b==0 && v==0) {
if (!multitime) {
std::cout << "Scanning for Time Steps " << asciifile.c_str() << std::endl;
reader->UpdateInformation();
reader->GetTimeStepValues(time_values);
Tnum = (int)time_values.size();
std::cout << "Found " << Tnum << " Time steps in file " << std::endl;
}
}
} while (++v<Vnum);
//
readers.push_back(varreaders);
} while (++b<Bnum);
//
vtkSmartPointer<vtkH5PartWriter> writer = vtkSmartPointer<vtkH5PartWriter>::New();
writer->SetFileName((char*)hdf5file.c_str());
vtkSmartPointer<vtkASCIIParticleReader> reader;
vtkSmartPointer<vtkPolyData> polys;
t=0;
do { // Time
b=0;
std::cout << "Reading TimeStep " << t << std::endl;
//
vtkSmartPointer<vtkAppendPolyData> append = vtkSmartPointer<vtkAppendPolyData>::New();
do { // Block
int v=0;
ScalarList scalars;
std::cout << "Reading Block " << b << std::endl;
do { // Var
std::cout << "Reading Var " << v << std::endl;
reader = readers[b][v];
std::string filename = Finder->GenerateFileName(t,b,v);
reader->SetFileName(filename.c_str());
if (!multitime) {
reader->SetTimeStep(t);
}
reader->Update();
std::vector<double> values;
reader->GetTimeStepValues(values);
if (values.size()>0) time_values[t] = values[values.size()>t ? t : 0];
if (multivar) {
vtkPolyData *p = vtkPolyData::SafeDownCast(reader->GetOutput());
vtkFloatArray *floats = vtkFloatArray::SafeDownCast(p->GetPoints()->GetData());
scalars.push_back(floats);
}
//
} while (++v<Vnum);
if (multivar) {
readers[b][0]->CollectMultiFileScalars(scalars);
}
polys = vtkPolyData::SafeDownCast(readers[b][0]->GetOutput());
//
if (multiblock && polys) append->AddInput(polys);
} while (++b<Bnum);
//
vtkPolyData *realData = polys;
if (multiblock) {
append->Update();
realData = append->GetOutput();
}
if (idMap.size()) {
vtkSmartPointer<vtkFloatArray> IdScalars = vtkSmartPointer<vtkFloatArray>::New();
IdScalars->SetName("PointIdFlags");
double scalar = 0.0;
for (int i=0; i<realData->GetNumberOfPoints(); i++) {
for (std::map<long int, double>::iterator it=idMap.begin(); it!=idMap.end(); ++it) {
if (i<=it->first) {
scalar = it->second;
IdScalars->InsertNextTuple1(scalar);
break;
}
}
}
if (IdScalars->GetNumberOfTuples()==realData->GetNumberOfPoints()) {
realData->GetPointData()->AddArray(IdScalars);
}
}
writer->SetInputData(realData);
writer->SetTimeStep(t);
if (time_values.size()>t) {
writer->SetTimeValue(time_values[t]);
}
else {
writer->SetTimeValue(t);
}
if (OverrideTime) {
double val = OverrideTimeStep*(double)t;
writer->SetTimeValue(val);
}
writer->Write();
// to make sure reference counting deletes stuff
reader = NULL;
polys = NULL;
} while (++t<Tnum);
std::cout << "Closing hdf file " << std::endl;
std::cout << "Written (hopefully) : " << hdf5file.c_str() << std::endl;
writer->CloseFile();
std::cout << "Done" << std::endl;
}
