0d5885c0a9
The Legacy VTK file reader was augmenting all the field names with the type of field. For example, if you had a point scalar field named "elevation", it would be loaded as "SCALARS:elevation". This is bad for two reasons. First, it is downright confusing. A tool like ParaView or VisIt will tell me the field is named "elevation", but VTK-m will report that field does not exist. Second, the writer does not follow the same convention. Thus, if you have a loop of read file, modify, write file, you could end up with fields named "SCALARS:SCALARS:SCALARS:...".
774 lines
23 KiB
C++
774 lines
23 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//
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// Copyright 2015 Sandia Corporation.
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// Copyright 2015 UT-Battelle, LLC.
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// Copyright 2015 Los Alamos National Security.
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//
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// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// the U.S. Government retains certain rights in this software.
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//
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// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
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// Laboratory (LANL), the U.S. Government retains certain rights in
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// this software.
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//============================================================================
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#ifndef vtk_m_io_reader_VTKDataSetReaderBase_h
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#define vtk_m_io_reader_VTKDataSetReaderBase_h
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#include <vtkm/io/internal/Endian.h>
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#include <vtkm/io/internal/VTKDataSetCells.h>
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#include <vtkm/io/internal/VTKDataSetStructures.h>
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#include <vtkm/io/internal/VTKDataSetTypes.h>
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#include <vtkm/Types.h>
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#include <vtkm/VecTraits.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/DynamicArrayHandle.h>
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#include <vtkm/cont/ArrayPortalToIterators.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/io/ErrorIO.h>
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VTKM_THIRDPARTY_PRE_INCLUDE
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#include <boost/smart_ptr/scoped_ptr.hpp>
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#include <boost/lexical_cast.hpp>
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#include <boost/type_traits/is_same.hpp>
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VTKM_THIRDPARTY_POST_INCLUDE
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#include <algorithm>
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#include <fstream>
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#include <string>
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#include <vector>
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namespace vtkm {
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namespace io {
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namespace reader {
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namespace internal {
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struct VTKDataSetFile
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{
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std::string FileName;
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vtkm::Id2 Version;
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std::string Title;
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bool IsBinary;
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vtkm::io::internal::DataSetStructure Structure;
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std::ifstream Stream;
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};
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inline void PrintVTKDataFileSummary(const VTKDataSetFile &df, std::ostream &out)
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{
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out << "\tFile: " << df.FileName << std::endl;
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out << "\tVersion: " << df.Version[0] << "." << df.Version[0] << std::endl;
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out << "\tTitle: " << df.Title << std::endl;
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out << "\tFormat: " << (df.IsBinary ? "BINARY" : "ASCII") << std::endl;
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out << "\tDataSet type: " << vtkm::io::internal::DataSetStructureString(df.Structure)
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<< std::endl;
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}
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inline void parseAssert(bool condition)
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{
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if (!condition)
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{
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throw vtkm::io::ErrorIO("Parse Error");
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}
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}
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template <typename T> struct StreamIOType { typedef T Type; };
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template <> struct StreamIOType<vtkm::Int8> { typedef vtkm::Int16 Type; };
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template <> struct StreamIOType<vtkm::UInt8> { typedef vtkm::UInt16 Type; };
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// Since Fields and DataSets store data in the default DynamicArrayHandle, convert
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// the data to the closest type supported by default. The following will
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// need to be updated if DynamicArrayHandle or TypeListTagCommon changes.
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template <typename T> struct ClosestCommonType { typedef T Type; };
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template <> struct ClosestCommonType<vtkm::Int8> { typedef vtkm::Int32 Type; };
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template <> struct ClosestCommonType<vtkm::UInt8> { typedef vtkm::Int32 Type; };
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template <> struct ClosestCommonType<vtkm::Int16> { typedef vtkm::Int32 Type; };
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template <> struct ClosestCommonType<vtkm::UInt16> { typedef vtkm::Int32 Type; };
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template <> struct ClosestCommonType<vtkm::UInt32> { typedef vtkm::Int64 Type; };
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template <> struct ClosestCommonType<vtkm::UInt64> { typedef vtkm::Int64 Type; };
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template <typename T> struct ClosestFloat { typedef T Type; };
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template <> struct ClosestFloat<vtkm::Int8> { typedef vtkm::Float32 Type; };
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template <> struct ClosestFloat<vtkm::UInt8> { typedef vtkm::Float32 Type; };
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template <> struct ClosestFloat<vtkm::Int16> { typedef vtkm::Float32 Type; };
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template <> struct ClosestFloat<vtkm::UInt16> { typedef vtkm::Float32 Type; };
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template <> struct ClosestFloat<vtkm::Int32> { typedef vtkm::Float64 Type; };
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template <> struct ClosestFloat<vtkm::UInt32> { typedef vtkm::Float64 Type; };
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template <> struct ClosestFloat<vtkm::Int64> { typedef vtkm::Float64 Type; };
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template <> struct ClosestFloat<vtkm::UInt64> { typedef vtkm::Float64 Type; };
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template <typename T>
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vtkm::cont::DynamicArrayHandle CreateDynamicArrayHandle(const std::vector<T> &vec)
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{
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switch (vtkm::VecTraits<T>::NUM_COMPONENTS)
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{
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case 1:
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{
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typedef typename ClosestCommonType<T>::Type CommonType;
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if (!boost::is_same<T, CommonType>::value)
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{
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std::cerr << "Type " << vtkm::io::internal::DataTypeName<T>::Name()
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<< " is currently unsupported. Converting to "
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<< vtkm::io::internal::DataTypeName<CommonType>::Name() << "."
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<< std::endl;
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}
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vtkm::cont::ArrayHandle<CommonType> output;
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output.Allocate(static_cast<vtkm::Id>(vec.size()));
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for (vtkm::Id i = 0; i < output.GetNumberOfValues(); ++i)
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{
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output.GetPortalControl().Set(i,
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static_cast<CommonType>(vec[static_cast<std::size_t>(i)]));
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}
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return vtkm::cont::DynamicArrayHandle(output);
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}
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case 2:
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case 3:
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{
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typedef typename vtkm::VecTraits<T>::ComponentType InComponentType;
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typedef typename ClosestFloat<InComponentType>::Type OutComponentType;
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typedef vtkm::Vec<OutComponentType, 3> CommonType;
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if (!boost::is_same<T, CommonType>::value)
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{
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std::cerr << "Type " << vtkm::io::internal::DataTypeName<InComponentType>::Name()
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<< "[" << vtkm::VecTraits<T>::NUM_COMPONENTS << "] "
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<< "is currently unsupported. Converting to "
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<< vtkm::io::internal::DataTypeName<OutComponentType>::Name() << "[3]."
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<< std::endl;
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}
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vtkm::cont::ArrayHandle<CommonType> output;
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output.Allocate(static_cast<vtkm::Id>(vec.size()));
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for (vtkm::Id i = 0; i < output.GetNumberOfValues(); ++i)
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{
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CommonType outval = CommonType();
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for (vtkm::IdComponent j = 0; j < vtkm::VecTraits<T>::NUM_COMPONENTS; ++j)
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{
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outval[j] = static_cast<OutComponentType>(
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vtkm::VecTraits<T>::GetComponent(vec[static_cast<std::size_t>(i)], j));
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}
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output.GetPortalControl().Set(i, outval);
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}
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return vtkm::cont::DynamicArrayHandle(output);
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}
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default:
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{
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std::cerr << "Only 1, 2, or 3 components supported. Skipping." << std::endl;
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return vtkm::cont::DynamicArrayHandle(vtkm::cont::ArrayHandle<vtkm::Float32>());
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}
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}
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}
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} // namespace internal
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class VTKDataSetReaderBase
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{
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public:
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explicit VTKDataSetReaderBase(const char *fileName)
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: DataFile(new internal::VTKDataSetFile), DataSet(), Loaded(false)
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{
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this->DataFile->FileName = fileName;
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}
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virtual ~VTKDataSetReaderBase()
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{ }
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const vtkm::cont::DataSet& ReadDataSet()
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{
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if (!this->Loaded)
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{
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try
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{
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this->OpenFile();
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this->ReadHeader();
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this->Read();
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this->CloseFile();
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this->Loaded = true;
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}
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catch (std::ifstream::failure e)
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{
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std::string message("IO Error: ");
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throw vtkm::io::ErrorIO(message + e.what());
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}
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}
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return this->DataSet;
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}
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const vtkm::cont::DataSet& GetDataSet() const
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{
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return this->DataSet;
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}
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virtual void PrintSummary(std::ostream &out) const
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{
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out << "VTKDataSetReader" << std::endl;
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PrintVTKDataFileSummary(*this->DataFile.get(), out);
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this->DataSet.PrintSummary(out);
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}
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protected:
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void ReadPoints()
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{
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std::string dataType;
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std::size_t numPoints;
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this->DataFile->Stream >> numPoints >> dataType >> std::ws;
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vtkm::cont::DynamicArrayHandle points;
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this->DoReadDynamicArray(dataType, numPoints, 3, points);
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this->DataSet.AddCoordinateSystem(
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vtkm::cont::CoordinateSystem("coordinates", points));
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}
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void ReadCells(vtkm::cont::ArrayHandle<vtkm::Id> &connectivity,
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vtkm::cont::ArrayHandle<vtkm::IdComponent> &numIndices)
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{
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vtkm::Id numCells, numInts;
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this->DataFile->Stream >> numCells >> numInts >> std::ws;
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connectivity.Allocate(numInts - numCells);
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numIndices.Allocate(numCells);
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std::vector<vtkm::Int32> buffer(static_cast<std::size_t>(numInts));
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this->ReadArray(buffer);
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vtkm::Int32 *buffp = &buffer[0];
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vtkm::cont::ArrayHandle<vtkm::Id>::PortalControl connectivityPortal =
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connectivity.GetPortalControl();
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vtkm::cont::ArrayHandle<vtkm::IdComponent>::PortalControl numIndicesPortal =
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numIndices.GetPortalControl();
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for (vtkm::Id i = 0, connInd = 0; i < numCells; ++i)
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{
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vtkm::IdComponent numInds = static_cast<vtkm::IdComponent>(*buffp++);
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numIndicesPortal.Set(i, numInds);
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for (vtkm::IdComponent j = 0; j < numInds; ++j, ++connInd)
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{
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connectivityPortal.Set(connInd, static_cast<vtkm::Id>(*buffp++));
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}
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}
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}
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void ReadShapes(vtkm::cont::ArrayHandle<vtkm::UInt8> &shapes)
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{
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std::string tag;
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vtkm::Id numCells;
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this->DataFile->Stream >> tag >> numCells >> std::ws;
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internal::parseAssert(tag == "CELL_TYPES");
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shapes.Allocate(numCells);
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std::vector<vtkm::Int32> buffer(static_cast<std::size_t>(numCells));
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this->ReadArray(buffer);
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vtkm::Int32 *buffp = &buffer[0];
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vtkm::cont::ArrayHandle<vtkm::UInt8>::PortalControl shapesPortal =
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shapes.GetPortalControl();
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for (vtkm::Id i = 0; i < numCells; ++i)
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{
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shapesPortal.Set(i, static_cast<vtkm::UInt8>(*buffp++));
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}
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}
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void ReadAttributes()
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{
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if (this->DataFile->Stream.eof())
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{
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return;
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}
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vtkm::cont::Field::AssociationEnum association = vtkm::cont::Field::ASSOC_ANY;
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std::size_t size;
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std::string tag;
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this->DataFile->Stream >> tag;
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while (!this->DataFile->Stream.eof())
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{
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if (tag == "POINT_DATA")
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{
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association = vtkm::cont::Field::ASSOC_POINTS;
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}
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else if (tag == "CELL_DATA")
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{
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association = vtkm::cont::Field::ASSOC_CELL_SET;
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}
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else
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{
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internal::parseAssert(false);
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}
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this->DataFile->Stream >> size;
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while (!this->DataFile->Stream.eof())
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{
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std::string name;
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vtkm::cont::ArrayHandle<vtkm::Float32> empty;
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vtkm::cont::DynamicArrayHandle data(empty);
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this->DataFile->Stream >> tag;
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if (tag == "SCALARS")
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{
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this->ReadScalars(size, name, data);
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}
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else if (tag == "COLOR_SCALARS")
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{
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this->ReadColorScalars(size, name);
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}
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else if (tag == "LOOKUP_TABLE")
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{
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this->ReadLookupTable(name);
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}
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else if (tag == "VECTORS" || tag == "NORMALS")
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{
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this->ReadVectors(size, name, data);
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}
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else if (tag == "TEXTURE_COORDINATES")
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{
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this->ReadTextureCoordinates(size, name, data);
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}
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else if (tag == "TENSORS")
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{
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this->ReadTensors(size, name, data);
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}
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else if (tag == "FIELD")
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{
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this->ReadFields(name);
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}
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else
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{
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break;
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}
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if (data.GetNumberOfValues() > 0)
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{
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switch (association)
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{
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case vtkm::cont::Field::ASSOC_POINTS:
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this->DataSet.AddField(vtkm::cont::Field(name, association, data));
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break;
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case vtkm::cont::Field::ASSOC_CELL_SET:
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data.CastAndCall(PermuteCellData(this->CellsPermutation, data));
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this->DataSet.AddField(
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vtkm::cont::Field(name, association, "cells", data));
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break;
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default:
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break;
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}
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}
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}
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}
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}
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void SetCellsPermutation(const vtkm::cont::ArrayHandle<vtkm::Id> &permutation)
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{
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this->CellsPermutation = permutation;
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}
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void TransferDataFile(VTKDataSetReaderBase &reader)
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{
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reader.DataFile.swap(this->DataFile);
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this->DataFile.reset(NULL);
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}
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virtual void CloseFile()
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{
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this->DataFile->Stream.close();
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}
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private:
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void OpenFile()
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{
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this->DataFile->Stream.exceptions(std::ifstream::failbit | std::ifstream::badbit);
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this->DataFile->Stream.open(this->DataFile->FileName.c_str(),
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std::ios_base::in | std::ios_base::binary);
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}
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void ReadHeader()
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{
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char vstring[] = "# vtk DataFile Version";
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const int vlen = sizeof(vstring);
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// Read version line
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char vbuf[vlen];
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this->DataFile->Stream.read(vbuf, vlen - 1);
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vbuf[vlen - 1] = '\0';
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if (std::string(vbuf) != std::string(vstring))
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{
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throw vtkm::io::ErrorIO("Incorrect file format.");
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}
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char dot;
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this->DataFile->Stream >> this->DataFile->Version[0] >> dot
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>> this->DataFile->Version[1] >> std::ws;
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// Read title line
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std::getline(this->DataFile->Stream, this->DataFile->Title);
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// Read format line
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this->DataFile->IsBinary = false;
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std::string format;
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this->DataFile->Stream >> format >> std::ws;
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if (format == "BINARY")
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{
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this->DataFile->IsBinary = true;
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}
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else if (format != "ASCII")
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{
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throw vtkm::io::ErrorIO("Unsupported Format.");
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}
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// Read structure line
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std::string tag, structStr;
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this->DataFile->Stream >> tag >> structStr >> std::ws;
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internal::parseAssert(tag == "DATASET");
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this->DataFile->Structure = vtkm::io::internal::DataSetStructureId(structStr);
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if (this->DataFile->Structure == vtkm::io::internal::DATASET_UNKNOWN)
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{
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throw vtkm::io::ErrorIO("Unsupported DataSet type.");
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}
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}
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virtual void Read() = 0;
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void ReadScalars(std::size_t numElements, std::string &dataName,
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vtkm::cont::DynamicArrayHandle &data)
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{
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std::string dataType, lookupTableName;
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vtkm::IdComponent numComponents = 1;
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this->DataFile->Stream >> dataName >> dataType;
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std::string tag;
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this->DataFile->Stream >> tag;
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if (tag != "LOOKUP_TABLE")
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{
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try
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{
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numComponents = boost::lexical_cast<vtkm::IdComponent>(tag);
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}
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catch (boost::bad_lexical_cast &)
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{
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internal::parseAssert(false);
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}
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this->DataFile->Stream >> tag;
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}
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internal::parseAssert(tag == "LOOKUP_TABLE");
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this->DataFile->Stream >> lookupTableName >> std::ws;
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this->DoReadDynamicArray(dataType, numElements, numComponents, data);
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}
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void ReadColorScalars(std::size_t numElements, std::string &dataName)
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{
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std::cerr << "Support for COLOR_SCALARS is not implemented. Skipping."
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<< std::endl;
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std::size_t numValues;
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this->DataFile->Stream >> dataName >> numValues >> std::ws;
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this->SkipArray(numElements * numValues, vtkm::io::internal::ColorChannel8());
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}
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void ReadLookupTable(std::string &dataName)
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{
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std::cerr << "Support for LOOKUP_TABLE is not implemented. Skipping."
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<< std::endl;
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std::size_t numEntries;
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this->DataFile->Stream >> dataName >> numEntries >> std::ws;
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this->SkipArray(numEntries, vtkm::Vec<vtkm::io::internal::ColorChannel8, 4>());
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}
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void ReadTextureCoordinates(std::size_t numElements, std::string &dataName,
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vtkm::cont::DynamicArrayHandle &data)
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{
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vtkm::IdComponent numComponents;
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std::string dataType;
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this->DataFile->Stream >> dataName >> numComponents >> dataType >> std::ws;
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this->DoReadDynamicArray(dataType, numElements, numComponents, data);
|
|
}
|
|
|
|
void ReadVectors(std::size_t numElements, std::string &dataName,
|
|
vtkm::cont::DynamicArrayHandle &data)
|
|
{
|
|
std::string dataType;
|
|
this->DataFile->Stream >> dataName >> dataType >> std::ws;
|
|
|
|
this->DoReadDynamicArray(dataType, numElements, 3, data);
|
|
}
|
|
|
|
void ReadTensors(std::size_t numElements, std::string &dataName,
|
|
vtkm::cont::DynamicArrayHandle &data)
|
|
{
|
|
std::string dataType;
|
|
this->DataFile->Stream >> dataName >> dataType >> std::ws;
|
|
|
|
this->DoReadDynamicArray(dataType, numElements, 9, data);
|
|
}
|
|
|
|
protected:
|
|
//ReadFields needs to be protected so that derived readers can skip
|
|
//VisIt header fields
|
|
void ReadFields(std::string &dataName)
|
|
{
|
|
std::cerr << "Support for FIELD is not implemented. Skipping."
|
|
<< std::endl;
|
|
|
|
vtkm::Id numArrays;
|
|
this->DataFile->Stream >> dataName >> numArrays >> std::ws;
|
|
for (vtkm::Id i = 0; i < numArrays; ++i)
|
|
{
|
|
std::size_t numTuples;
|
|
vtkm::IdComponent numComponents;
|
|
std::string arrayName, dataType;
|
|
this->DataFile->Stream >> arrayName >> numComponents >> numTuples
|
|
>> dataType >> std::ws;
|
|
|
|
this->DoSkipDynamicArray(dataType, numTuples, numComponents);
|
|
}
|
|
}
|
|
|
|
private:
|
|
class SkipDynamicArray
|
|
{
|
|
public:
|
|
SkipDynamicArray(VTKDataSetReaderBase *reader,
|
|
std::size_t numElements)
|
|
: Reader(reader), NumElements(numElements)
|
|
{ }
|
|
|
|
template <typename T>
|
|
void operator()(T) const
|
|
{
|
|
this->Reader->SkipArray(this->NumElements, T());
|
|
}
|
|
|
|
template <typename T>
|
|
void operator()(vtkm::IdComponent numComponents, T) const
|
|
{
|
|
this->Reader->SkipArray(
|
|
this->NumElements * static_cast<std::size_t>(numComponents), T());
|
|
}
|
|
|
|
protected:
|
|
VTKDataSetReaderBase *Reader;
|
|
std::size_t NumElements;
|
|
};
|
|
|
|
class ReadDynamicArray : public SkipDynamicArray
|
|
{
|
|
public:
|
|
ReadDynamicArray(VTKDataSetReaderBase *reader,
|
|
std::size_t numElements,
|
|
vtkm::cont::DynamicArrayHandle &data)
|
|
: SkipDynamicArray(reader, numElements), Data(&data)
|
|
{ }
|
|
|
|
template <typename T>
|
|
void operator()(T) const
|
|
{
|
|
std::vector<T> buffer(this->NumElements);
|
|
this->Reader->ReadArray(buffer);
|
|
*this->Data = internal::CreateDynamicArrayHandle(buffer);
|
|
}
|
|
|
|
template <typename T>
|
|
void operator()(vtkm::IdComponent numComponents, T) const
|
|
{
|
|
std::cerr << "Support for " << numComponents
|
|
<< " components not implemented. Skipping." << std::endl;
|
|
SkipDynamicArray::operator()(numComponents, T());
|
|
}
|
|
|
|
private:
|
|
vtkm::cont::DynamicArrayHandle *Data;
|
|
};
|
|
|
|
//Make the Array parsing methods protected so that derived classes
|
|
//can call the methods.
|
|
protected:
|
|
void DoSkipDynamicArray(std::string dataType, std::size_t numElements,
|
|
vtkm::IdComponent numComponents)
|
|
{
|
|
vtkm::io::internal::DataType typeId = vtkm::io::internal::DataTypeId(dataType);
|
|
vtkm::io::internal::SelectTypeAndCall(typeId, numComponents,
|
|
SkipDynamicArray(this, numElements));
|
|
}
|
|
|
|
void DoReadDynamicArray(std::string dataType, std::size_t numElements,
|
|
vtkm::IdComponent numComponents,
|
|
vtkm::cont::DynamicArrayHandle &data)
|
|
{
|
|
vtkm::io::internal::DataType typeId = vtkm::io::internal::DataTypeId(dataType);
|
|
vtkm::io::internal::SelectTypeAndCall(typeId, numComponents,
|
|
ReadDynamicArray(this, numElements, data));
|
|
}
|
|
|
|
template <typename T>
|
|
void ReadArray(std::vector<T> &buffer)
|
|
{
|
|
std::size_t numElements = buffer.size();
|
|
if (this->DataFile->IsBinary)
|
|
{
|
|
this->DataFile->Stream.read(reinterpret_cast<char*>(&buffer[0]),
|
|
static_cast<std::streamsize>(numElements * sizeof(T)));
|
|
if(vtkm::io::internal::IsLittleEndian())
|
|
{
|
|
vtkm::io::internal::FlipEndianness(buffer);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
typedef typename vtkm::VecTraits<T>::ComponentType ComponentType;
|
|
const vtkm::IdComponent numComponents = vtkm::VecTraits<T>::NUM_COMPONENTS;
|
|
|
|
for (std::size_t i = 0; i < numElements; ++i)
|
|
{
|
|
for (vtkm::IdComponent j = 0; j < numComponents; ++j)
|
|
{
|
|
typename internal::StreamIOType<ComponentType>::Type val;
|
|
this->DataFile->Stream >> val;
|
|
vtkm::VecTraits<T>::SetComponent(buffer[i], j,
|
|
static_cast<ComponentType>(val));
|
|
}
|
|
}
|
|
}
|
|
this->DataFile->Stream >> std::ws;
|
|
}
|
|
|
|
template <vtkm::IdComponent NumComponents>
|
|
void ReadArray(std::vector<vtkm::Vec<vtkm::io::internal::DummyBitType,
|
|
NumComponents> > &buffer)
|
|
{
|
|
std::cerr << "Support for data type 'bit' is not implemented. Skipping."
|
|
<< std::endl;
|
|
this->SkipArray(buffer.size(), vtkm::Vec<vtkm::io::internal::DummyBitType,
|
|
NumComponents>());
|
|
buffer.clear();
|
|
}
|
|
|
|
void ReadArray(std::vector<vtkm::io::internal::DummyBitType> &buffer)
|
|
{
|
|
std::cerr << "Support for data type 'bit' is not implemented. Skipping."
|
|
<< std::endl;
|
|
this->SkipArray(buffer.size(), vtkm::io::internal::DummyBitType());
|
|
buffer.clear();
|
|
}
|
|
|
|
template <typename T>
|
|
void SkipArray(std::size_t numElements, T)
|
|
{
|
|
if (this->DataFile->IsBinary)
|
|
{
|
|
this->DataFile->Stream.seekg(
|
|
static_cast<std::streamoff>(numElements * sizeof(T)),
|
|
std::ios_base::cur);
|
|
}
|
|
else
|
|
{
|
|
typedef typename vtkm::VecTraits<T>::ComponentType ComponentType;
|
|
const vtkm::IdComponent numComponents = vtkm::VecTraits<T>::NUM_COMPONENTS;
|
|
|
|
for (std::size_t i = 0; i < numElements; ++i)
|
|
{
|
|
for (vtkm::IdComponent j = 0; j < numComponents; ++j)
|
|
{
|
|
typename internal::StreamIOType<ComponentType>::Type val;
|
|
this->DataFile->Stream >> val;
|
|
}
|
|
}
|
|
}
|
|
this->DataFile->Stream >> std::ws;
|
|
}
|
|
|
|
template <vtkm::IdComponent NumComponents>
|
|
void SkipArray(std::size_t numElements,
|
|
vtkm::Vec<vtkm::io::internal::DummyBitType, NumComponents>)
|
|
{
|
|
this->SkipArray(numElements * static_cast<std::size_t>(NumComponents),
|
|
vtkm::io::internal::DummyBitType());
|
|
}
|
|
|
|
void SkipArray(std::size_t numElements, vtkm::io::internal::DummyBitType)
|
|
{
|
|
if (this->DataFile->IsBinary)
|
|
{
|
|
numElements = (numElements + 7) / 8;
|
|
this->DataFile->Stream.seekg(static_cast<std::streamoff>(numElements),
|
|
std::ios_base::cur);
|
|
}
|
|
else
|
|
{
|
|
for (std::size_t i = 0; i < numElements; ++i)
|
|
{
|
|
vtkm::UInt16 val;
|
|
this->DataFile->Stream >> val;
|
|
}
|
|
}
|
|
this->DataFile->Stream >> std::ws;
|
|
}
|
|
|
|
private:
|
|
class PermuteCellData
|
|
{
|
|
public:
|
|
PermuteCellData(const vtkm::cont::ArrayHandle<vtkm::Id> &permutation,
|
|
vtkm::cont::DynamicArrayHandle &data)
|
|
: Permutation(permutation), Data(&data)
|
|
{ }
|
|
|
|
template <typename T>
|
|
void operator()(const vtkm::cont::ArrayHandle<T> &handle) const
|
|
{
|
|
vtkm::cont::ArrayHandle<T> out;
|
|
out.Allocate(this->Permutation.GetNumberOfValues());
|
|
|
|
vtkm::cont::ArrayHandle<vtkm::Id>::PortalConstControl permutationPortal =
|
|
this->Permutation.GetPortalConstControl();
|
|
typename vtkm::cont::ArrayHandle<T>::PortalConstControl inPortal =
|
|
handle.GetPortalConstControl();
|
|
typename vtkm::cont::ArrayHandle<T>::PortalControl outPortal =
|
|
out.GetPortalControl();
|
|
for (vtkm::Id i = 0; i < out.GetNumberOfValues(); ++i)
|
|
{
|
|
outPortal.Set(i, inPortal.Get(permutationPortal.Get(i)));
|
|
}
|
|
*this->Data = vtkm::cont::DynamicArrayHandle(out);
|
|
}
|
|
|
|
private:
|
|
const vtkm::cont::ArrayHandle<vtkm::Id> Permutation;
|
|
vtkm::cont::DynamicArrayHandle *Data;
|
|
};
|
|
|
|
protected:
|
|
boost::scoped_ptr<internal::VTKDataSetFile> DataFile;
|
|
vtkm::cont::DataSet DataSet;
|
|
|
|
private:
|
|
bool Loaded;
|
|
vtkm::cont::ArrayHandle<vtkm::Id> CellsPermutation;
|
|
|
|
friend class VTKDataSetReader;
|
|
};
|
|
|
|
}
|
|
}
|
|
} // vtkm::io::reader
|
|
|
|
VTKM_BASIC_TYPE_VECTOR(vtkm::io::internal::ColorChannel8)
|
|
VTKM_BASIC_TYPE_VECTOR(vtkm::io::internal::DummyBitType)
|
|
|
|
#endif // vtk_m_io_reader_VTKDataSetReaderBase_h
|