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https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
5db762ee71
The `From` and `To` nomenclature for topology mapping has been confusing for both users and developers, especially at lower levels where the intention of mapping attributes from one element to another is easily conflated with the concept of mapping indices (which maps in the exact opposite direction). These identifiers have been renamed to `VisitTopology` and `IncidentTopology` to clarify the direction of the mapping. The order in which these template parameters are specified for `WorkletMapTopology` have also been reversed, since eventually there may be more than one `IncidentTopology`, and having `IncidentTopology` at the end will allow us to replace it with a variadic template parameter pack in the future. Other implementation details supporting these worklets, include `Fetch` tags, `Connectivity` classes, and methods on the various `CellSet` classes (such as `PrepareForInput` have also reversed their template arguments. These will need to be cautiously updated. The convenience implementations of `WorkletMapTopology` have been renamed for clarity as follows: ``` WorkletMapPointToCell --> WorkletVisitCellsWithPoints WorkletMapCellToPoint --> WorkletVisitPointsWithCells ``` The `ControlSignature` tags have been renamed as follows: ``` FieldInTo --> FieldInVisit FieldInFrom --> FieldInMap FromCount --> IncidentElementCount FromIndices --> IncidentElementIndices ```
339 lines
11 KiB
C++
339 lines
11 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_rendering_Quadralizer_h
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#define vtk_m_rendering_Quadralizer_h
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#include <typeinfo>
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#include <vtkm/cont/Algorithm.h>
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#include <vtkm/cont/ArrayHandleCounting.h>
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#include <vtkm/cont/CellSetPermutation.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/rendering/raytracing/MeshConnectivityBuilder.h>
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#include <vtkm/worklet/DispatcherMapTopology.h>
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#include <vtkm/worklet/WorkletMapField.h>
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#include <vtkm/worklet/WorkletMapTopology.h>
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#define QUAD_PER_CSS 6
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namespace vtkm
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{
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namespace rendering
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{
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class Quadralizer
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{
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public:
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class CountQuads : public vtkm::worklet::WorkletVisitCellsWithPoints
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{
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public:
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VTKM_CONT
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CountQuads() {}
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typedef void ControlSignature(CellSetIn cellset, FieldOut);
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typedef void ExecutionSignature(CellShape, _2);
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VTKM_EXEC
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void operator()(vtkm::CellShapeTagGeneric shapeType, vtkm::Id& quads) const
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{
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if (shapeType.Id == vtkm::CELL_SHAPE_QUAD)
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quads = 1;
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else if (shapeType.Id == CELL_SHAPE_HEXAHEDRON)
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quads = 6;
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else if (shapeType.Id == vtkm::CELL_SHAPE_WEDGE)
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quads = 3;
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else if (shapeType.Id == vtkm::CELL_SHAPE_PYRAMID)
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quads = 1;
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else
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quads = 0;
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}
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VTKM_EXEC
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void operator()(vtkm::CellShapeTagHexahedron vtkmNotUsed(shapeType), vtkm::Id& quads) const
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{
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quads = 6;
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}
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VTKM_EXEC
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void operator()(vtkm::CellShapeTagQuad shapeType, vtkm::Id& quads) const
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{
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if (shapeType.Id == vtkm::CELL_SHAPE_QUAD)
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quads = 1;
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else
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quads = 0;
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}
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VTKM_EXEC
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void operator()(vtkm::CellShapeTagWedge vtkmNotUsed(shapeType), vtkm::Id& quads) const
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{
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quads = 3;
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}
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}; //class CountQuads
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template <int DIM>
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class SegmentedStructured : public vtkm::worklet::WorkletVisitCellsWithPoints
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{
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public:
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typedef void ControlSignature(CellSetIn cellset, FieldInCell, WholeArrayOut);
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typedef void ExecutionSignature(IncidentElementIndices, _2, _3);
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//typedef _1 InputDomain;
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VTKM_CONT
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SegmentedStructured() {}
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#if defined(VTKM_MSVC)
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#pragma warning(push)
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#pragma warning(disable : 4127) //conditional expression is constant
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#endif
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template <typename CellNodeVecType, typename OutIndicesPortal>
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VTKM_EXEC void cell2quad(vtkm::Id4 idx,
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vtkm::Vec<Id, 5>& quad,
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const vtkm::Id offset,
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const CellNodeVecType& cellIndices,
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OutIndicesPortal& outputIndices) const
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{
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quad[1] = cellIndices[vtkm::IdComponent(idx[0])];
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quad[2] = cellIndices[vtkm::IdComponent(idx[1])];
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quad[3] = cellIndices[vtkm::IdComponent(idx[2])];
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quad[4] = cellIndices[vtkm::IdComponent(idx[3])];
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outputIndices.Set(offset, quad);
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}
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template <typename CellNodeVecType, typename OutIndicesPortal>
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VTKM_EXEC void operator()(const CellNodeVecType& cellIndices,
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const vtkm::Id& cellIndex,
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OutIndicesPortal& outputIndices) const
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{
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if (DIM == 2)
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{
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// Do nothing mark says
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}
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else if (DIM == 3)
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{
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vtkm::Id offset = cellIndex * QUAD_PER_CSS;
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vtkm::Vec<vtkm::Id, 5> quad;
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quad[0] = cellIndex;
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vtkm::Id4 idx;
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idx[0] = 0;
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idx[1] = 1;
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idx[2] = 5, idx[3] = 4;
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cell2quad(idx, quad, offset, cellIndices, outputIndices);
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idx[0] = 1;
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idx[1] = 2;
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idx[2] = 6;
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idx[3] = 5;
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offset++;
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cell2quad(idx, quad, offset, cellIndices, outputIndices);
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idx[0] = 3;
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idx[1] = 7;
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idx[2] = 6;
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idx[3] = 2;
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offset++;
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cell2quad(idx, quad, offset, cellIndices, outputIndices);
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idx[0] = 0;
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idx[1] = 4;
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idx[2] = 7;
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idx[3] = 3;
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offset++;
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cell2quad(idx, quad, offset, cellIndices, outputIndices);
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idx[0] = 0;
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idx[1] = 3;
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idx[2] = 2;
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idx[3] = 1;
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offset++;
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cell2quad(idx, quad, offset, cellIndices, outputIndices);
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idx[0] = 4;
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idx[1] = 5;
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idx[2] = 6;
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idx[3] = 7;
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offset++;
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cell2quad(idx, quad, offset, cellIndices, outputIndices);
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}
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}
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#if defined(VTKM_MSVC)
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#pragma warning(pop)
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#endif
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};
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class Quadralize : public vtkm::worklet::WorkletVisitCellsWithPoints
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{
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public:
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VTKM_CONT
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Quadralize() {}
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typedef void ControlSignature(CellSetIn cellset, FieldInCell, WholeArrayOut);
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typedef void ExecutionSignature(_2, CellShape, PointIndices, WorkIndex, _3);
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template <typename VecType, typename OutputPortal>
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VTKM_EXEC void cell2quad(vtkm::Id& offset,
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const VecType& cellIndices,
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const vtkm::Id& cellId,
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const vtkm::Id Id0,
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const vtkm::Id Id1,
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const vtkm::Id Id2,
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const vtkm::Id Id3,
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OutputPortal& outputIndices) const
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{
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vtkm::Vec<vtkm::Id, 5> quad;
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quad[0] = cellId;
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quad[1] = static_cast<vtkm::Id>(cellIndices[vtkm::IdComponent(Id0)]);
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quad[2] = static_cast<vtkm::Id>(cellIndices[vtkm::IdComponent(Id1)]);
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quad[3] = static_cast<vtkm::Id>(cellIndices[vtkm::IdComponent(Id2)]);
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quad[4] = static_cast<vtkm::Id>(cellIndices[vtkm::IdComponent(Id3)]);
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outputIndices.Set(offset++, quad);
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}
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template <typename VecType, typename OutputPortal>
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VTKM_EXEC void operator()(const vtkm::Id& pointOffset,
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vtkm::CellShapeTagWedge vtkmNotUsed(shapeType),
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const VecType& cellIndices,
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const vtkm::Id& cellId,
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OutputPortal& outputIndices) const
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{
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vtkm::Id offset = pointOffset;
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cell2quad(offset, cellIndices, cellId, 3, 0, 2, 5, outputIndices);
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cell2quad(offset, cellIndices, cellId, 1, 4, 5, 2, outputIndices);
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cell2quad(offset, cellIndices, cellId, 0, 3, 4, 1, outputIndices);
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}
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template <typename VecType, typename OutputPortal>
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VTKM_EXEC void operator()(const vtkm::Id& offset,
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vtkm::CellShapeTagQuad shapeType,
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const VecType& cellIndices,
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const vtkm::Id& cellId,
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OutputPortal& outputIndices) const
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{
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if (shapeType.Id == vtkm::CELL_SHAPE_QUAD)
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{
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vtkm::Vec<vtkm::Id, 5> quad;
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quad[0] = cellId;
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quad[1] = static_cast<vtkm::Id>(cellIndices[0]);
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quad[2] = static_cast<vtkm::Id>(cellIndices[1]);
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quad[3] = static_cast<vtkm::Id>(cellIndices[2]);
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quad[4] = static_cast<vtkm::Id>(cellIndices[3]);
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outputIndices.Set(offset, quad);
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}
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}
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template <typename VecType, typename OutputPortal>
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VTKM_EXEC void operator()(const vtkm::Id& pointOffset,
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vtkm::CellShapeTagHexahedron vtkmNotUsed(shapeType),
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const VecType& cellIndices,
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const vtkm::Id& cellId,
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OutputPortal& outputIndices) const
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{
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vtkm::Id offset = pointOffset;
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cell2quad(offset, cellIndices, cellId, 0, 1, 5, 4, outputIndices);
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cell2quad(offset, cellIndices, cellId, 1, 2, 6, 5, outputIndices);
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cell2quad(offset, cellIndices, cellId, 3, 7, 6, 2, outputIndices);
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cell2quad(offset, cellIndices, cellId, 0, 4, 7, 3, outputIndices);
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cell2quad(offset, cellIndices, cellId, 0, 3, 2, 1, outputIndices);
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cell2quad(offset, cellIndices, cellId, 4, 5, 6, 7, outputIndices);
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}
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template <typename VecType, typename OutputPortal>
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VTKM_EXEC void operator()(const vtkm::Id& pointOffset,
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vtkm::CellShapeTagGeneric shapeType,
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const VecType& cellIndices,
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const vtkm::Id& cellId,
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OutputPortal& outputIndices) const
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{
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if (shapeType.Id == vtkm::CELL_SHAPE_QUAD)
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{
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vtkm::Vec<vtkm::Id, 5> quad;
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quad[0] = cellId;
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quad[1] = cellIndices[0];
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quad[2] = cellIndices[1];
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quad[3] = cellIndices[2];
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quad[4] = cellIndices[3];
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outputIndices.Set(pointOffset, quad);
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}
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if (shapeType.Id == vtkm::CELL_SHAPE_HEXAHEDRON)
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{
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vtkm::Id offset = pointOffset;
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cell2quad(offset, cellIndices, cellId, 0, 1, 5, 4, outputIndices);
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cell2quad(offset, cellIndices, cellId, 1, 2, 6, 5, outputIndices);
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cell2quad(offset, cellIndices, cellId, 3, 7, 6, 2, outputIndices);
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cell2quad(offset, cellIndices, cellId, 0, 4, 7, 3, outputIndices);
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cell2quad(offset, cellIndices, cellId, 0, 3, 2, 1, outputIndices);
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cell2quad(offset, cellIndices, cellId, 4, 5, 6, 7, outputIndices);
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}
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if (shapeType.Id == vtkm::CELL_SHAPE_WEDGE)
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{
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vtkm::Id offset = pointOffset;
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cell2quad(offset, cellIndices, cellId, 3, 0, 2, 5, outputIndices);
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cell2quad(offset, cellIndices, cellId, 1, 4, 5, 2, outputIndices);
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cell2quad(offset, cellIndices, cellId, 0, 3, 4, 1, outputIndices);
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}
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if (shapeType.Id == vtkm::CELL_SHAPE_PYRAMID)
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{
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vtkm::Id offset = pointOffset;
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cell2quad(offset, cellIndices, cellId, 3, 2, 1, 0, outputIndices);
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}
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}
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}; //class Quadralize
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public:
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VTKM_CONT
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Quadralizer() {}
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VTKM_CONT
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void Run(const vtkm::cont::DynamicCellSet& cellset,
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vtkm::cont::ArrayHandle<vtkm::Vec<vtkm::Id, 5>>& outputIndices,
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vtkm::Id& output)
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{
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if (cellset.IsSameType(vtkm::cont::CellSetStructured<3>()))
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{
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vtkm::cont::CellSetStructured<3> cellSetStructured3D =
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cellset.Cast<vtkm::cont::CellSetStructured<3>>();
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const vtkm::Id numCells = cellSetStructured3D.GetNumberOfCells();
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vtkm::cont::ArrayHandleCounting<vtkm::Id> cellIdxs(0, 1, numCells);
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outputIndices.Allocate(numCells * QUAD_PER_CSS);
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vtkm::worklet::DispatcherMapTopology<SegmentedStructured<3>> segInvoker;
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segInvoker.Invoke(cellSetStructured3D, cellIdxs, outputIndices);
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output = numCells * QUAD_PER_CSS;
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}
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else
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{
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vtkm::cont::ArrayHandle<vtkm::Id> quadsPerCell;
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vtkm::worklet::DispatcherMapTopology<CountQuads> countInvoker;
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countInvoker.Invoke(cellset, quadsPerCell);
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vtkm::Id total = 0;
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total = vtkm::cont::Algorithm::Reduce(quadsPerCell, vtkm::Id(0));
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vtkm::cont::ArrayHandle<vtkm::Id> cellOffsets;
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vtkm::cont::Algorithm::ScanExclusive(quadsPerCell, cellOffsets);
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outputIndices.Allocate(total);
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vtkm::worklet::DispatcherMapTopology<Quadralize> quadInvoker;
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quadInvoker.Invoke(cellset, cellOffsets, outputIndices);
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output = total;
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}
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}
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};
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}
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}
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#endif
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