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Commit 315e5f7e authored by Praetorius, Simon's avatar Praetorius, Simon
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Merge branch 'issue/data_array_names' into 'master' 

Store IDs of DataArrays using section name and Name attribute

See merge request extensions/dune-vtk!6
parents 13c0549b c7e99f56
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dune/vtk/vtkreader.hh
View file @ 315e5f7e
......@@ -43,6 +43,7 @@ namespace Dune
// Type storing information about read data
struct DataArrayAttributes
{
std::string name;
Vtk::DataTypes type;
unsigned int components = 1;
std::uint64_t offset = 0;
......@@ -105,11 +106,11 @@ namespace Dune
/// NOTE: requires an aforegoing call to \ref read()
GridFunction<Vtk::PointContext> getPointData (std::string const& name) const
{
auto const& data = dataArray_.at(name);
auto const& data = dataArray_.at("PointData." + name);
VTK_ASSERT_MSG(data.section == POINT_DATA,
"The data to extract is not point-data. Use `getCellData()` instead!");
return {*creator_, pointData_.at(name), data.components,
return {*creator_, pointData_.at("PointData." + name), data.components,
vec_types, vec_offsets, vec_connectivity};
}
......@@ -117,11 +118,11 @@ namespace Dune
/// NOTE: requires an aforegoing call to \ref read()
GridFunction<Vtk::CellContext> getCellData (std::string const& name) const
{
auto const& data = dataArray_.at(name);
auto const& data = dataArray_.at("CellData." + name);
VTK_ASSERT_MSG(data.section == CELL_DATA,
"The data to extract is not cell-data. Use `getPointData()` instead!");
return {*creator_, cellData_.at(name), data.components,
return {*creator_, cellData_.at("CellData." + name), data.components,
vec_types, vec_offsets, vec_connectivity};
}
......@@ -206,6 +207,9 @@ namespace Dune
return result;
}
// Convert a section into a string
std::string toString (Sections s) const;
// Find beginning of appended binary data
std::uint64_t findAppendedDataPosition (std::ifstream& input) const;
......@@ -237,10 +241,11 @@ namespace Dune
std::size_t numberOfPoints_ = 0; //< Number of vertices in the grid
// offset information for appended data
// map Name -> {DataType,NumberOfComponents,Offset}
// map: id -> {Name,DataType,NumberOfComponents,Offset}
std::map<std::string, DataArrayAttributes> dataArray_;
// storage for internal point and cell data
// map: id -> vector of data entries per point/cell
std::map<std::string, std::vector<FieldType>> pointData_;
std::map<std::string, std::vector<FieldType>> cellData_;
......
dune/vtk/vtkreader.impl.hh
View file @ 315e5f7e
......@@ -43,7 +43,7 @@ void VtkReader<Grid,Creator,Field>::readSerialFileFromStream (std::ifstream& inp
{
clear();
std::string compressor = "";
std::string data_name = "", data_format = "";
std::string data_id = "", data_format = "";
Vtk::DataTypes data_type = Vtk::UNKNOWN;
unsigned int data_components = 0;
std::uint64_t data_offset = 0;
......@@ -110,10 +110,12 @@ void VtkReader<Grid,Creator,Field>::readSerialFileFromStream (std::ifstream& inp
data_type = Vtk::Map::to_datatype[attr["type"]];
if (!attr["Name"].empty())
data_name = Vtk::to_lower(attr["Name"]);
else if (section == POINTS)
data_name = "points";
// Use Section.Name as id
data_id = toString(section) + "." + attr["Name"];
if (section == POINTS)
// In the Points section must only be one DataArray with id=Points
data_id = "Points";
data_components = 1;
if (!attr["NumberOfComponents"].empty())
......@@ -135,7 +137,7 @@ void VtkReader<Grid,Creator,Field>::readSerialFileFromStream (std::ifstream& inp
}
// Store attributes of DataArray
dataArray_[data_name] = {data_type, data_components, data_offset, section};
dataArray_[data_id] = {attr["Name"], data_type, data_components, data_offset, section};
// Skip section in appended mode
if (data_format == "appended") {
......@@ -179,7 +181,7 @@ void VtkReader<Grid,Creator,Field>::readSerialFileFromStream (std::ifstream& inp
VTK_ASSERT_MSG(attr["encoding"] == "raw", "base64 encoding not supported");
offset0_ = findAppendedDataPosition(input);
if (dataArray_["points"].type == Vtk::FLOAT32)
if (dataArray_["Points"].type == Vtk::FLOAT32)
readPointsAppended<float>(input);
else
readPointsAppended<double>(input);
......@@ -187,18 +189,18 @@ void VtkReader<Grid,Creator,Field>::readSerialFileFromStream (std::ifstream& inp
readCellsAppended(input);
// read point an cell data
for (auto const& [name,data] : dataArray_) {
for (auto const& [id,data] : dataArray_) {
if (data.section == POINT_DATA) {
if (data.type == Vtk::FLOAT32)
readPointDataAppended<float>(input, name);
readPointDataAppended<float>(input, id);
else
readPointDataAppended<double>(input, name);
readPointDataAppended<double>(input, id);
}
else if (data.section == CELL_DATA) {
if (data.type == Vtk::FLOAT32)
readCellDataAppended<float>(input, name);
readCellDataAppended<float>(input, id);
else
readCellDataAppended<double>(input, name);
readCellDataAppended<double>(input, id);
}
}
......@@ -209,16 +211,16 @@ void VtkReader<Grid,Creator,Field>::readSerialFileFromStream (std::ifstream& inp
switch (section) {
case PD_DATA_ARRAY:
section = readPointData(input, data_name);
section = readPointData(input, data_id);
break;
case POINTS_DATA_ARRAY:
section = readPoints(input, data_name);
section = readPoints(input, data_id);
break;
case CD_DATA_ARRAY:
section = readCellData(input, data_name);
section = readCellData(input, data_id);
break;
case CELLS_DATA_ARRAY:
section = readCells(input, data_name);
section = readCells(input, data_id);
break;
default:
// do nothing
......@@ -337,13 +339,13 @@ Sections skipRestOfDataArray (IStream& input, Sections section, Sections parent_
// Read values stored on the cells with name `name`
template <class Grid, class Creator, class Field>
typename VtkReader<Grid,Creator,Field>::Sections
VtkReader<Grid,Creator,Field>::readCellData (std::ifstream& input, std::string name)
VtkReader<Grid,Creator,Field>::readCellData (std::ifstream& input, std::string id)
{
VTK_ASSERT(numberOfCells_ > 0);
unsigned int components = dataArray_[name].components;
unsigned int components = dataArray_[id].components;
Sections sec;
std::vector<Field>& values = cellData_[name];
std::vector<Field>& values = cellData_[id];
sec = readDataArray(input, values, components*numberOfCells_, CD_DATA_ARRAY, CELL_DATA);
if (sec != CELL_DATA)
sec = skipRestOfDataArray(input, CD_DATA_ARRAY, CELL_DATA);
......@@ -356,29 +358,29 @@ VtkReader<Grid,Creator,Field>::readCellData (std::ifstream& input, std::string n
template <class Grid, class Creator, class Field>
template <class T>
void VtkReader<Grid,Creator,Field>::readCellDataAppended (std::ifstream& input, std::string name)
void VtkReader<Grid,Creator,Field>::readCellDataAppended (std::ifstream& input, std::string id)
{
VTK_ASSERT(numberOfCells_ > 0);
unsigned int components = dataArray_[name].components;
unsigned int components = dataArray_[id].components;
std::vector<T> values;
readAppended(input, values, dataArray_[name].offset);
readAppended(input, values, dataArray_[id].offset);
VTK_ASSERT(values.size() == components*numberOfCells_);
cellData_[name].resize(values.size());
std::copy(values.begin(), values.end(), cellData_[name].begin());
cellData_[id].resize(values.size());
std::copy(values.begin(), values.end(), cellData_[id].begin());
}
template <class Grid, class Creator, class Field>
typename VtkReader<Grid,Creator,Field>::Sections
VtkReader<Grid,Creator,Field>::readPointData (std::ifstream& input, std::string name)
VtkReader<Grid,Creator,Field>::readPointData (std::ifstream& input, std::string id)
{
VTK_ASSERT(numberOfPoints_ > 0);
unsigned int components = dataArray_[name].components;
unsigned int components = dataArray_[id].components;
Sections sec;
std::vector<Field>& values = pointData_[name];
std::vector<Field>& values = pointData_[id];
sec = readDataArray(input, values, components*numberOfPoints_, PD_DATA_ARRAY, POINT_DATA);
if (sec != POINT_DATA)
sec = skipRestOfDataArray(input, PD_DATA_ARRAY, POINT_DATA);
......@@ -391,27 +393,27 @@ VtkReader<Grid,Creator,Field>::readPointData (std::ifstream& input, std::string
template <class Grid, class Creator, class Field>
template <class T>
void VtkReader<Grid,Creator,Field>::readPointDataAppended (std::ifstream& input, std::string name)
void VtkReader<Grid,Creator,Field>::readPointDataAppended (std::ifstream& input, std::string id)
{
VTK_ASSERT(numberOfPoints_ > 0);
unsigned int components = dataArray_[name].components;
unsigned int components = dataArray_[id].components;
std::vector<T> values;
readAppended(input, values, dataArray_[name].offset);
readAppended(input, values, dataArray_[id].offset);
VTK_ASSERT(values.size() == components*numberOfPoints_);
pointData_[name].resize(values.size());
std::copy(values.begin(), values.end(), pointData_[name].begin());
pointData_[id].resize(values.size());
std::copy(values.begin(), values.end(), pointData_[id].begin());
}
template <class Grid, class Creator, class Field>
typename VtkReader<Grid,Creator,Field>::Sections
VtkReader<Grid,Creator,Field>::readPoints (std::ifstream& input, std::string name)
VtkReader<Grid,Creator,Field>::readPoints (std::ifstream& input, std::string id)
{
using T = typename GlobalCoordinate::value_type;
VTK_ASSERT(numberOfPoints_ > 0);
VTK_ASSERT(dataArray_["points"].components == 3u);
VTK_ASSERT(dataArray_["Points"].components == 3u);
Sections sec;
......@@ -442,9 +444,9 @@ template <class Grid, class Creator, class Field>
void VtkReader<Grid,Creator,Field>::readPointsAppended (std::ifstream& input)
{
VTK_ASSERT(numberOfPoints_ > 0);
VTK_ASSERT(dataArray_["points"].components == 3u);
VTK_ASSERT(dataArray_["Points"].components == 3u);
std::vector<T> point_values;
readAppended(input, point_values, dataArray_["points"].offset);
readAppended(input, point_values, dataArray_["Points"].offset);
VTK_ASSERT(point_values.size() == 3*numberOfPoints_);
// extract points from continuous values
......@@ -462,20 +464,20 @@ void VtkReader<Grid,Creator,Field>::readPointsAppended (std::ifstream& input)
template <class Grid, class Creator, class Field>
typename VtkReader<Grid,Creator,Field>::Sections
VtkReader<Grid,Creator,Field>::readCells (std::ifstream& input, std::string name)
VtkReader<Grid,Creator,Field>::readCells (std::ifstream& input, std::string id)
{
Sections sec = CELLS_DATA_ARRAY;
VTK_ASSERT(numberOfCells_ > 0);
if (name == "types") {
if (id == "Cells.types") {
sec = readDataArray(input, vec_types, numberOfCells_, CELLS_DATA_ARRAY, CELLS);
VTK_ASSERT(vec_types.size() == numberOfCells_);
} else if (name == "offsets") {
} else if (id == "Cells.offsets") {
sec = readDataArray(input, vec_offsets, numberOfCells_, CELLS_DATA_ARRAY, CELLS);
VTK_ASSERT(vec_offsets.size() == numberOfCells_);
} else if (name == "connectivity") {
} else if (id == "Cells.connectivity") {
sec = readDataArray(input, vec_connectivity, std::size_t(-1), CELLS_DATA_ARRAY, CELLS);
} else if (name == "global_point_ids") {
} else if (id == "Cells.global_point_ids") {
sec = readDataArray(input, vec_point_ids, numberOfPoints_, CELLS_DATA_ARRAY, CELLS);
VTK_ASSERT(vec_point_ids.size() == numberOfPoints_);
}
......@@ -488,9 +490,9 @@ template <class Grid, class Creator, class Field>
void VtkReader<Grid,Creator,Field>::readCellsAppended (std::ifstream& input)
{
VTK_ASSERT(numberOfCells_ > 0);
auto types_data = dataArray_["types"];
auto offsets_data = dataArray_["offsets"];
auto connectivity_data = dataArray_["connectivity"];
auto types_data = dataArray_["Cells.types"];
auto offsets_data = dataArray_["Cells.offsets"];
auto connectivity_data = dataArray_["Cells.connectivity"];
VTK_ASSERT(types_data.type == Vtk::UINT8);
readAppended(input, vec_types, types_data.offset);
......@@ -518,8 +520,8 @@ void VtkReader<Grid,Creator,Field>::readCellsAppended (std::ifstream& input)
else { DUNE_THROW(Dune::NotImplemented, "Unsupported DataType in Cell connectivity."); }
VTK_ASSERT(vec_connectivity.size() == std::size_t(vec_offsets.back()));
if (dataArray_.count("global_point_ids") > 0) {
auto point_id_data = dataArray_["global_point_ids"];
if (dataArray_.count("Cells.global_point_ids") > 0) {
auto point_id_data = dataArray_["Cells.global_point_ids"];
VTK_ASSERT(point_id_data.type == Vtk::UINT64);
readAppended(input, vec_point_ids, point_id_data.offset);
VTK_ASSERT(vec_point_ids.size() == numberOfPoints_);
......@@ -628,6 +630,39 @@ void VtkReader<Grid,Creator,Field>::fillGridCreator (bool insertPieces)
creator_->insertPieces(pieces_);
}
// Convert section into string
template <class Grid, class Creator, class Field>
std::string VtkReader<Grid,Creator,Field>::toString(Sections s) const
{
switch (s) {
case VTK_FILE:
return "VTKFile";
case UNSTRUCTURED_GRID:
return "UnstructuredGrid";
case PIECE:
return "Piece";
case POINT_DATA:
return "PointData";
case CELL_DATA:
return "CellData";
case POINTS:
return "Points";
case CELLS:
return "Cells";
case APPENDED_DATA:
return "AppendedData";
case PD_DATA_ARRAY:
case CD_DATA_ARRAY:
case POINTS_DATA_ARRAY:
case CELLS_DATA_ARRAY:
return "DataArray";
default:
return "Unknown";
}
}
// Assume input already read the line <AppendedData ...>
template <class Grid, class Creator, class Field>
std::uint64_t VtkReader<Grid,Creator,Field>::findAppendedDataPosition (std::ifstream& input) const
......
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