mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-16 17:22:55 +00:00
470 lines
22 KiB
C++
470 lines
22 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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//
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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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#ifndef vtk_m_cont_DataSetBuilderExplicit_h
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#define vtk_m_cont_DataSetBuilderExplicit_h
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#include <vtkm/cont/ArrayHandleCast.h>
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#include <vtkm/cont/ArrayHandleCompositeVector.h>
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#include <vtkm/cont/ArrayPortalToIterators.h>
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#include <vtkm/cont/ConvertNumComponentsToOffsets.h>
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#include <vtkm/cont/CoordinateSystem.h>
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#include <vtkm/cont/DataSet.h>
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namespace vtkm
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{
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namespace cont
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{
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//Coordinates builder??
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class VTKM_CONT_EXPORT DataSetBuilderExplicit
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{
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public:
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VTKM_CONT
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DataSetBuilderExplicit() {}
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/// \brief Create a 1D `DataSet` with arbitrary cell connectivity.
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///
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/// The cell connectivity is specified with arrays defining the shape and point
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/// connections of each cell.
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/// In this form, the cell connectivity and coordinates are specified as `std::vector`
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/// and the data will be copied to create the data object.
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///
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/// @param[in] xVals An array providing the x coordinate of each point.
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/// @param[in] shapes An array of shapes for each cell. Each entry should be one of the
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/// `vtkm::CELL_SHAPE_*` values identifying the shape of the corresponding cell.
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/// @param[in] numIndices An array containing for each cell the number of points incident
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/// on that cell.
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/// @param[in] connectivity An array specifying for each cell the indicies of points
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/// incident on each cell. Each cell has a short array of indices that reference points
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/// in the @a coords array. The length of each of these short arrays is specified by
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/// the @a numIndices array. These variable length arrays are tightly packed together
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/// in this @a connectivity array.
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/// @param[in] coordsNm (optional) The name to register the coordinates as.
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template <typename T>
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VTKM_CONT static vtkm::cont::DataSet Create(const std::vector<T>& xVals,
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const std::vector<vtkm::UInt8>& shapes,
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const std::vector<vtkm::IdComponent>& numIndices,
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const std::vector<vtkm::Id>& connectivity,
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const std::string& coordsNm = "coords")
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{
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std::vector<T> yVals(xVals.size(), 0), zVals(xVals.size(), 0);
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return DataSetBuilderExplicit::Create(
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xVals, yVals, zVals, shapes, numIndices, connectivity, coordsNm);
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}
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/// \brief Create a 2D `DataSet` with arbitrary cell connectivity.
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///
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/// The cell connectivity is specified with arrays defining the shape and point
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/// connections of each cell.
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/// In this form, the cell connectivity and coordinates are specified as `std::vector`
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/// and the data will be copied to create the data object.
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///
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/// @param[in] xVals An array providing the x coordinate of each point.
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/// @param[in] yVals An array providing the x coordinate of each point.
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/// @param[in] shapes An array of shapes for each cell. Each entry should be one of the
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/// `vtkm::CELL_SHAPE_*` values identifying the shape of the corresponding cell.
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/// @param[in] numIndices An array containing for each cell the number of points incident
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/// on that cell.
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/// @param[in] connectivity An array specifying for each cell the indicies of points
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/// incident on each cell. Each cell has a short array of indices that reference points
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/// in the @a coords array. The length of each of these short arrays is specified by
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/// the @a numIndices array. These variable length arrays are tightly packed together
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/// in this @a connectivity array.
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/// @param[in] coordsNm (optional) The name to register the coordinates as.
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template <typename T>
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VTKM_CONT static vtkm::cont::DataSet Create(const std::vector<T>& xVals,
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const std::vector<T>& yVals,
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const std::vector<vtkm::UInt8>& shapes,
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const std::vector<vtkm::IdComponent>& numIndices,
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const std::vector<vtkm::Id>& connectivity,
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const std::string& coordsNm = "coords")
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{
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std::vector<T> zVals(xVals.size(), 0);
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return DataSetBuilderExplicit::Create(
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xVals, yVals, zVals, shapes, numIndices, connectivity, coordsNm);
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}
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/// \brief Create a 3D `DataSet` with arbitrary cell connectivity.
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///
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/// The cell connectivity is specified with arrays defining the shape and point
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/// connections of each cell.
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/// In this form, the cell connectivity and coordinates are specified as `std::vector`
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/// and the data will be copied to create the data object.
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///
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/// @param[in] xVals An array providing the x coordinate of each point.
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/// @param[in] yVals An array providing the x coordinate of each point.
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/// @param[in] zVals An array providing the x coordinate of each point.
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/// @param[in] shapes An array of shapes for each cell. Each entry should be one of the
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/// `vtkm::CELL_SHAPE_*` values identifying the shape of the corresponding cell.
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/// @param[in] numIndices An array containing for each cell the number of points incident
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/// on that cell.
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/// @param[in] connectivity An array specifying for each cell the indicies of points
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/// incident on each cell. Each cell has a short array of indices that reference points
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/// in the @a coords array. The length of each of these short arrays is specified by
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/// the @a numIndices array. These variable length arrays are tightly packed together
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/// in this @a connectivity array.
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/// @param[in] coordsNm (optional) The name to register the coordinates as.
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template <typename T>
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VTKM_CONT static vtkm::cont::DataSet Create(const std::vector<T>& xVals,
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const std::vector<T>& yVals,
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const std::vector<T>& zVals,
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const std::vector<vtkm::UInt8>& shapes,
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const std::vector<vtkm::IdComponent>& numIndices,
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const std::vector<vtkm::Id>& connectivity,
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const std::string& coordsNm = "coords");
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/// \brief Create a 3D `DataSet` with arbitrary cell connectivity.
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///
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/// The cell connectivity is specified with arrays defining the shape and point
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/// connections of each cell.
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/// In this form, the cell connectivity and coordinates are specified as `std::vector`
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/// and the data will be copied to create the data object.
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///
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/// @param[in] coords An array of point coordinates.
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/// @param[in] shapes An array of shapes for each cell. Each entry should be one of the
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/// `vtkm::CELL_SHAPE_*` values identifying the shape of the corresponding cell.
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/// @param[in] numIndices An array containing for each cell the number of points incident
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/// on that cell.
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/// @param[in] connectivity An array specifying for each cell the indicies of points
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/// incident on each cell. Each cell has a short array of indices that reference points
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/// in the @a coords array. The length of each of these short arrays is specified by
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/// the @a numIndices array. These variable length arrays are tightly packed together
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/// in this @a connectivity array.
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/// @param[in] coordsNm (optional) The name to register the coordinates as.
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template <typename T>
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VTKM_CONT static vtkm::cont::DataSet Create(const std::vector<vtkm::Vec<T, 3>>& coords,
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const std::vector<vtkm::UInt8>& shapes,
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const std::vector<vtkm::IdComponent>& numIndices,
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const std::vector<vtkm::Id>& connectivity,
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const std::string& coordsNm = "coords");
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/// \brief Create a 3D `DataSet` with arbitrary cell connectivity.
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///
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/// The cell connectivity is specified with arrays defining the shape and point
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/// connections of each cell.
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/// In this form, the cell connectivity and coordinates are specified as `ArrayHandle`
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/// and the memory will be shared with the created data object. That said, the `DataSet`
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/// construction will generate a new array for offsets.
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///
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/// @param[in] coords An array of point coordinates.
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/// @param[in] shapes An array of shapes for each cell. Each entry should be one of the
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/// `vtkm::CELL_SHAPE_*` values identifying the shape of the corresponding cell.
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/// @param[in] numIndices An array containing for each cell the number of points incident
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/// on that cell.
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/// @param[in] connectivity An array specifying for each cell the indicies of points
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/// incident on each cell. Each cell has a short array of indices that reference points
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/// in the @a coords array. The length of each of these short arrays is specified by
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/// the @a numIndices array. These variable length arrays are tightly packed together
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/// in this @a connectivity array.
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/// @param[in] coordsNm (optional) The name to register the coordinates as.
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template <typename T>
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VTKM_CONT static vtkm::cont::DataSet Create(
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const vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>>& coords,
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const vtkm::cont::ArrayHandle<vtkm::UInt8>& shapes,
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const vtkm::cont::ArrayHandle<vtkm::IdComponent>& numIndices,
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const vtkm::cont::ArrayHandle<vtkm::Id>& connectivity,
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const std::string& coordsNm = "coords")
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{
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auto offsets = vtkm::cont::ConvertNumComponentsToOffsets(numIndices);
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return DataSetBuilderExplicit::BuildDataSet(coords, shapes, offsets, connectivity, coordsNm);
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}
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/// \brief Create a 3D `DataSet` with arbitrary cell connectivity for a single cell type.
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///
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/// The cell connectivity is specified with an array defining the point
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/// connections of each cell.
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/// All the cells in the `DataSet` are of the same shape and contain the same number
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/// of incident points.
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/// In this form, the cell connectivity and coordinates are specified as `std::vector`
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/// and the data will be copied to create the data object.
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///
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/// @param[in] coords An array of point coordinates.
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/// @param[in] tag A tag object representing the shape of all the cells in the mesh.
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/// Cell shape tag objects have a name of the form `vtkm::CellShapeTag*` such as
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/// `vtkm::CellShapeTagTriangle` or `vtkm::CellShapeTagHexahedron`. To specify a
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/// cell shape determined at runtime, use `vtkm::CellShapeTagGeneric`.
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/// @param[in] numberOfPointsPerCell The number of points that are incident to each cell.
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/// @param[in] connectivity An array specifying for each cell the indicies of points
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/// incident on each cell. Each cell has a short array of indices that reference points
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/// in the @a coords array. The length of each of these short arrays is specified by
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/// @a numberOfPointsPerCell. These short arrays are tightly packed together
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/// in this @a connectivity array.
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/// @param[in] coordsNm (optional) The name to register the coordinates as.
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template <typename T, typename CellShapeTag>
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VTKM_CONT static vtkm::cont::DataSet Create(const std::vector<vtkm::Vec<T, 3>>& coords,
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CellShapeTag tag,
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vtkm::IdComponent numberOfPointsPerCell,
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const std::vector<vtkm::Id>& connectivity,
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const std::string& coordsNm = "coords");
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/// \brief Create a 3D `DataSet` with arbitrary cell connectivity for a single cell type.
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///
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/// The cell connectivity is specified with an array defining the point
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/// connections of each cell.
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/// All the cells in the `DataSet` are of the same shape and contain the same number
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/// of incident points.
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/// In this form, the cell connectivity and coordinates are specified as `ArrayHandle`
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/// and the memory will be shared with the created data object.
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///
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/// @param[in] coords An array of point coordinates.
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/// @param[in] tag A tag object representing the shape of all the cells in the mesh.
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/// Cell shape tag objects have a name of the form `vtkm::CellShapeTag*` such as
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/// `vtkm::CellShapeTagTriangle` or `vtkm::CellShapeTagHexahedron`. To specify a
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/// cell shape determined at runtime, use `vtkm::CellShapeTagGeneric`.
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/// @param[in] numberOfPointsPerCell The number of points that are incident to each cell.
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/// @param[in] connectivity An array specifying for each cell the indicies of points
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/// incident on each cell. Each cell has a short array of indices that reference points
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/// in the @a coords array. The length of each of these short arrays is specified by
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/// @a numberOfPointsPerCell. These short arrays are tightly packed together
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/// in this @a connectivity array.
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/// @param[in] coordsNm (optional) The name to register the coordinates as.
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template <typename T, typename CellShapeTag>
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VTKM_CONT static vtkm::cont::DataSet Create(
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const vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>>& coords,
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CellShapeTag tag,
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vtkm::IdComponent numberOfPointsPerCell,
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const vtkm::cont::ArrayHandle<vtkm::Id>& connectivity,
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const std::string& coordsNm = "coords")
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{
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return DataSetBuilderExplicit::BuildDataSet(
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coords, tag, numberOfPointsPerCell, connectivity, coordsNm);
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}
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private:
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template <typename T>
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VTKM_CONT static vtkm::cont::DataSet BuildDataSet(
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const vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>>& coords,
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const vtkm::cont::ArrayHandle<vtkm::UInt8>& shapes,
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const vtkm::cont::ArrayHandle<vtkm::Id>& offsets,
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const vtkm::cont::ArrayHandle<vtkm::Id>& connectivity,
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const std::string& coordsNm);
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template <typename T, typename CellShapeTag>
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VTKM_CONT static vtkm::cont::DataSet BuildDataSet(
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const vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>>& coords,
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CellShapeTag tag,
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vtkm::IdComponent numberOfPointsPerCell,
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const vtkm::cont::ArrayHandle<vtkm::Id>& connectivity,
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const std::string& coordsNm);
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};
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template <typename T>
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inline VTKM_CONT vtkm::cont::DataSet DataSetBuilderExplicit::Create(
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const std::vector<T>& xVals,
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const std::vector<T>& yVals,
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const std::vector<T>& zVals,
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const std::vector<vtkm::UInt8>& shapes,
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const std::vector<vtkm::IdComponent>& numIndices,
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const std::vector<vtkm::Id>& connectivity,
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const std::string& coordsNm)
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{
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VTKM_ASSERT(xVals.size() == yVals.size() && yVals.size() == zVals.size() && xVals.size() > 0);
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vtkm::cont::ArrayHandle<vtkm::Vec3f> coordsArray;
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coordsArray.Allocate(static_cast<vtkm::Id>(xVals.size()));
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auto coordsPortal = coordsArray.WritePortal();
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for (std::size_t index = 0; index < xVals.size(); ++index)
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{
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coordsPortal.Set(static_cast<vtkm::Id>(index),
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vtkm::make_Vec(static_cast<vtkm::FloatDefault>(xVals[index]),
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static_cast<vtkm::FloatDefault>(yVals[index]),
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static_cast<vtkm::FloatDefault>(zVals[index])));
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}
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auto shapesArray = vtkm::cont::make_ArrayHandle(shapes, vtkm::CopyFlag::On);
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auto connArray = vtkm::cont::make_ArrayHandle(connectivity, vtkm::CopyFlag::On);
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auto offsetsArray = vtkm::cont::ConvertNumComponentsToOffsets(
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vtkm::cont::make_ArrayHandle(numIndices, vtkm::CopyFlag::Off));
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return DataSetBuilderExplicit::BuildDataSet(
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coordsArray, shapesArray, offsetsArray, connArray, coordsNm);
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}
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template <typename T>
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inline VTKM_CONT vtkm::cont::DataSet DataSetBuilderExplicit::Create(
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const std::vector<vtkm::Vec<T, 3>>& coords,
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const std::vector<vtkm::UInt8>& shapes,
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const std::vector<vtkm::IdComponent>& numIndices,
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const std::vector<vtkm::Id>& connectivity,
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const std::string& coordsNm)
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{
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auto coordsArray = vtkm::cont::make_ArrayHandle(coords, vtkm::CopyFlag::On);
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auto shapesArray = vtkm::cont::make_ArrayHandle(shapes, vtkm::CopyFlag::On);
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auto connArray = vtkm::cont::make_ArrayHandle(connectivity, vtkm::CopyFlag::On);
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auto offsetsArray = vtkm::cont::ConvertNumComponentsToOffsets(
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vtkm::cont::make_ArrayHandle(numIndices, vtkm::CopyFlag::Off));
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return DataSetBuilderExplicit::BuildDataSet(
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coordsArray, shapesArray, offsetsArray, connArray, coordsNm);
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}
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template <typename T>
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inline VTKM_CONT vtkm::cont::DataSet DataSetBuilderExplicit::BuildDataSet(
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const vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>>& coords,
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const vtkm::cont::ArrayHandle<vtkm::UInt8>& shapes,
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const vtkm::cont::ArrayHandle<vtkm::Id>& offsets,
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const vtkm::cont::ArrayHandle<vtkm::Id>& connectivity,
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const std::string& coordsNm)
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{
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vtkm::cont::DataSet dataSet;
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dataSet.AddCoordinateSystem(vtkm::cont::CoordinateSystem(coordsNm, coords));
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vtkm::Id nPts = static_cast<vtkm::Id>(coords.GetNumberOfValues());
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vtkm::cont::CellSetExplicit<> cellSet;
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cellSet.Fill(nPts, shapes, connectivity, offsets);
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dataSet.SetCellSet(cellSet);
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return dataSet;
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}
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template <typename T, typename CellShapeTag>
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inline VTKM_CONT vtkm::cont::DataSet DataSetBuilderExplicit::Create(
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const std::vector<vtkm::Vec<T, 3>>& coords,
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CellShapeTag tag,
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vtkm::IdComponent numberOfPointsPerCell,
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const std::vector<vtkm::Id>& connectivity,
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const std::string& coordsNm)
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{
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auto coordsArray = vtkm::cont::make_ArrayHandle(coords, vtkm::CopyFlag::On);
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auto connArray = vtkm::cont::make_ArrayHandle(connectivity, vtkm::CopyFlag::On);
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return DataSetBuilderExplicit::Create(
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coordsArray, tag, numberOfPointsPerCell, connArray, coordsNm);
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}
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template <typename T, typename CellShapeTag>
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inline VTKM_CONT vtkm::cont::DataSet DataSetBuilderExplicit::BuildDataSet(
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const vtkm::cont::ArrayHandle<vtkm::Vec<T, 3>>& coords,
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CellShapeTag tag,
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vtkm::IdComponent numberOfPointsPerCell,
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const vtkm::cont::ArrayHandle<vtkm::Id>& connectivity,
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const std::string& coordsNm)
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{
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(void)tag; //C4100 false positive workaround
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vtkm::cont::DataSet dataSet;
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dataSet.AddCoordinateSystem(vtkm::cont::CoordinateSystem(coordsNm, coords));
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vtkm::cont::CellSetSingleType<> cellSet;
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cellSet.Fill(coords.GetNumberOfValues(), tag.Id, numberOfPointsPerCell, connectivity);
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dataSet.SetCellSet(cellSet);
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return dataSet;
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}
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/// @brief Helper class to build a `DataSet` by iteratively adding points and cells.
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///
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/// This class allows you to specify a `DataSet` by adding points and cells one at a time.
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class VTKM_CONT_EXPORT DataSetBuilderExplicitIterative
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{
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public:
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VTKM_CONT DataSetBuilderExplicitIterative();
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/// @brief Begin defining points and cells of a `DataSet`.
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///
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/// The state of this object is initialized to be ready to use `AddPoint` and
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/// `AddCell` methods.
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///
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/// @param[in] coordName (optional) The name to register the coordinates as.
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VTKM_CONT void Begin(const std::string& coordName = "coords");
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/// @brief Add a point to the `DataSet`.
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///
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/// @param[in] pt The coordinates of the point to add.
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/// @returns The index of the newly created point.
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VTKM_CONT vtkm::Id AddPoint(const vtkm::Vec3f& pt);
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/// @brief Add a point to the `DataSet`.
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///
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/// @param[in] pt The coordinates of the point to add.
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/// @returns The index of the newly created point.
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template <typename T>
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VTKM_CONT vtkm::Id AddPoint(const vtkm::Vec<T, 3>& pt)
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{
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return AddPoint(static_cast<vtkm::Vec3f>(pt));
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}
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/// @brief Add a point to the `DataSet`.
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///
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/// @param[in] x The x coordinate of the newly created point.
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/// @param[in] y The y coordinate of the newly created point.
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/// @param[in] z The z coordinate of the newly created point.
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/// @returns The index of the newly created point.
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VTKM_CONT vtkm::Id AddPoint(const vtkm::FloatDefault& x,
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const vtkm::FloatDefault& y,
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const vtkm::FloatDefault& z = 0);
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/// @brief Add a point to the `DataSet`.
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///
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/// @param[in] x The x coordinate of the newly created point.
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/// @param[in] y The y coordinate of the newly created point.
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/// @param[in] z The z coordinate of the newly created point.
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/// @returns The index of the newly created point.
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template <typename T>
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VTKM_CONT vtkm::Id AddPoint(const T& x, const T& y, const T& z = 0)
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{
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return AddPoint(static_cast<vtkm::FloatDefault>(x),
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static_cast<vtkm::FloatDefault>(y),
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static_cast<vtkm::FloatDefault>(z));
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}
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/// @brief Add a cell to the `DataSet`.
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///
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/// @param[in] shape Identifies the shape of the cell. Use one of the
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/// `vtkm::CELL_SHAPE_*` values.
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/// @param[in] conn List of indices to the incident points.
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VTKM_CONT void AddCell(const vtkm::UInt8& shape, const std::vector<vtkm::Id>& conn);
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/// @brief Add a cell to the `DataSet`.
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///
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/// @param[in] shape Identifies the shape of the cell. Use one of the
|
|
/// `vtkm::CELL_SHAPE_*` values.
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/// @param[in] conn List of indices to the incident points.
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/// @param[in] n The number of incident points (and the length of the `conn` array).
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|
VTKM_CONT void AddCell(const vtkm::UInt8& shape,
|
|
const vtkm::Id* conn,
|
|
const vtkm::IdComponent& n);
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|
|
|
/// @brief Start adding a cell to the `DataSet`.
|
|
///
|
|
/// The incident points are later added one at a time using `AddCellPoint`.
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/// The cell is completed the next time `AddCell` or `Create` is called.
|
|
///
|
|
/// @param[in] shape Identifies the shape of the cell. Use one of the
|
|
VTKM_CONT void AddCell(vtkm::UInt8 shape);
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|
|
|
/// @brief Add an incident point to the current cell.
|
|
///
|
|
/// @param[in] pointIndex Index to the incident point.
|
|
VTKM_CONT void AddCellPoint(vtkm::Id pointIndex);
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|
|
|
/// @brief Produce the `DataSet`.
|
|
///
|
|
/// The points and cells previously added are finalized and the resulting `DataSet`
|
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/// is returned.
|
|
VTKM_CONT vtkm::cont::DataSet Create();
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|
|
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private:
|
|
std::string coordNm;
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|
|
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std::vector<vtkm::Vec3f> points;
|
|
std::vector<vtkm::UInt8> shapes;
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|
std::vector<vtkm::IdComponent> numIdx;
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std::vector<vtkm::Id> connectivity;
|
|
};
|
|
}
|
|
}
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#endif //vtk_m_cont_DataSetBuilderExplicit_h
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