mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
f23ff9fa49
For some reason when VTK-m was being compiled as an accelerator in VTK, Visual Studio 2013 gave a bunch of warnings about not being able to generate assignment operators for many classes. This happened for classes with a const ivar that could not be automatically set. (Automatic copy constructors are fine on this count.) I'm not sure why these warnings did not happen when just compiling VTK-m, nor am I sure why they were generated at all as no code actually used the copy constructors. This commit fixes the problems by adding a private declaration for assignment operators that cannot be automatically created. No implementation is provided, nor should any be needed.
668 lines
25 KiB
C++
668 lines
25 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 2014 Sandia Corporation.
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// Copyright 2014 UT-Battelle, LLC.
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// Copyright 2014 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_worklet_MarchingCubes_h
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#define vtk_m_worklet_MarchingCubes_h
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#include <vtkm/VectorAnalysis.h>
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#include <vtkm/exec/CellDerivative.h>
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#include <vtkm/exec/ParametricCoordinates.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ArrayHandleCompositeVector.h>
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#include <vtkm/cont/ArrayHandleGroupVec.h>
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#include <vtkm/cont/ArrayHandleIndex.h>
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#include <vtkm/cont/ArrayHandlePermutation.h>
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#include <vtkm/cont/ArrayHandleZip.h>
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#include <vtkm/cont/DataSet.h>
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#include <vtkm/cont/DeviceAdapter.h>
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#include <vtkm/cont/DynamicArrayHandle.h>
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#include <vtkm/cont/Field.h>
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#include <vtkm/worklet/DispatcherMapTopology.h>
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#include <vtkm/worklet/ScatterCounting.h>
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#include <vtkm/worklet/WorkletMapTopology.h>
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#include <vtkm/worklet/MarchingCubesDataTables.h>
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namespace vtkm {
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namespace worklet {
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namespace marchingcubes {
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// -----------------------------------------------------------------------------
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template<typename S>
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vtkm::cont::ArrayHandle<vtkm::Float32,S> make_ScalarField(const vtkm::cont::ArrayHandle<vtkm::Float32,S>& ah)
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{ return ah; }
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template<typename S>
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vtkm::cont::ArrayHandle<vtkm::Float64,S> make_ScalarField(const vtkm::cont::ArrayHandle<vtkm::Float64,S>& ah)
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{ return ah; }
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template<typename S>
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vtkm::cont::ArrayHandleCast<vtkm::FloatDefault, vtkm::cont::ArrayHandle<vtkm::UInt8,S> >
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make_ScalarField(const vtkm::cont::ArrayHandle<vtkm::UInt8,S>& ah)
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{ return vtkm::cont::make_ArrayHandleCast(ah, vtkm::FloatDefault()); }
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template<typename S>
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vtkm::cont::ArrayHandleCast<vtkm::FloatDefault, vtkm::cont::ArrayHandle<vtkm::Int8,S> >
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make_ScalarField(const vtkm::cont::ArrayHandle<vtkm::Int8,S>& ah)
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{ return vtkm::cont::make_ArrayHandleCast(ah, vtkm::FloatDefault()); }
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// -----------------------------------------------------------------------------
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template<typename T, typename U>
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VTKM_EXEC
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int GetHexahedronClassification(const T& values, const U isoValue)
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{
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return ((values[0] > isoValue) |
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(values[1] > isoValue) << 1 |
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(values[2] > isoValue) << 2 |
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(values[3] > isoValue) << 3 |
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(values[4] > isoValue) << 4 |
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(values[5] > isoValue) << 5 |
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(values[6] > isoValue) << 6 |
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(values[7] > isoValue) << 7);
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}
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// ---------------------------------------------------------------------------
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template<typename T>
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class ClassifyCell : public vtkm::worklet::WorkletMapPointToCell
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{
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public:
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struct ClassifyCellTagType : vtkm::ListTagBase<T> { };
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typedef void ControlSignature(
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FieldInPoint< ClassifyCellTagType > inNodes,
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CellSetIn cellset,
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FieldOutCell< IdComponentType > outNumTriangles,
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WholeArrayIn< IdComponentType > numTrianglesTable);
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typedef void ExecutionSignature(_1, _3, _4);
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typedef _2 InputDomain;
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T Isovalue;
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VTKM_CONT
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ClassifyCell(T isovalue) :
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Isovalue(isovalue)
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{
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}
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template<typename FieldInType,
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typename NumTrianglesTablePortalType>
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VTKM_EXEC
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void operator()(const FieldInType &fieldIn,
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vtkm::IdComponent &numTriangles,
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const NumTrianglesTablePortalType &numTrianglesTable) const
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{
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typedef typename vtkm::VecTraits<FieldInType>::ComponentType FieldType;
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const FieldType iso = static_cast<FieldType>(this->Isovalue);
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const vtkm::IdComponent caseNumber =
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GetHexahedronClassification(fieldIn, iso);
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numTriangles = numTrianglesTable.Get(caseNumber);
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}
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};
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/// \brief Used to store data need for the EdgeWeightGenerate worklet.
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/// This information is not passed as part of the arguments to the worklet as
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/// that dramatically increase compile time by 200%
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// -----------------------------------------------------------------------------
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template< typename ScalarType,
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typename NormalStorageType,
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typename DeviceAdapter >
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class EdgeWeightGenerateMetaData
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{
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template<typename FieldType>
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struct PortalTypes
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{
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typedef vtkm::cont::ArrayHandle<FieldType> HandleType;
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typedef typename HandleType::template ExecutionTypes<DeviceAdapter> ExecutionTypes;
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typedef typename ExecutionTypes::Portal Portal;
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typedef typename ExecutionTypes::PortalConst PortalConst;
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};
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struct NormalPortalTypes
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{
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typedef vtkm::cont::ArrayHandle<vtkm::Vec< ScalarType, 3>, NormalStorageType> HandleType;
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typedef typename HandleType::template ExecutionTypes<DeviceAdapter> ExecutionTypes;
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typedef typename ExecutionTypes::Portal Portal;
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};
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public:
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VTKM_CONT
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EdgeWeightGenerateMetaData(
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vtkm::Id size,
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vtkm::cont::ArrayHandle< vtkm::Vec<ScalarType, 3>, NormalStorageType >& normals,
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vtkm::cont::ArrayHandle< vtkm::FloatDefault >& interpWeights,
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vtkm::cont::ArrayHandle<vtkm::Id2>& interpIds,
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const vtkm::cont::ArrayHandle< vtkm::IdComponent >& edgeTable,
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const vtkm::cont::ArrayHandle< vtkm::IdComponent >& numTriTable,
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const vtkm::cont::ArrayHandle< vtkm::IdComponent >& triTable,
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const vtkm::worklet::ScatterCounting& scatter):
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NormalPortal( normals.PrepareForOutput( 3*size, DeviceAdapter() ) ),
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InterpWeightsPortal( interpWeights.PrepareForOutput( 3*size, DeviceAdapter()) ),
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InterpIdPortal( interpIds.PrepareForOutput( 3*size, DeviceAdapter() ) ),
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EdgeTable( edgeTable.PrepareForInput(DeviceAdapter()) ),
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NumTriTable( numTriTable.PrepareForInput(DeviceAdapter()) ),
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TriTable( triTable.PrepareForInput(DeviceAdapter()) ),
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Scatter(scatter)
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{
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//any way we can easily build an interface so that we don't need to hold
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//onto a billion portals?
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//Normal and Interp need to be 3 times longer than size as they
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//are per point of the output triangle
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}
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typename NormalPortalTypes::Portal NormalPortal;
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typename PortalTypes<vtkm::FloatDefault>::Portal InterpWeightsPortal;
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typename PortalTypes<vtkm::Id2>::Portal InterpIdPortal;
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typename PortalTypes<vtkm::IdComponent>::PortalConst EdgeTable;
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typename PortalTypes<vtkm::IdComponent>::PortalConst NumTriTable;
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typename PortalTypes<vtkm::IdComponent>::PortalConst TriTable;
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vtkm::worklet::ScatterCounting Scatter;
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};
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/// \brief Compute the weights for each edge that is used to generate
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/// a point in the resulting iso-surface
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// -----------------------------------------------------------------------------
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template< typename ScalarType,
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typename NormalStorageType,
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typename DeviceAdapter >
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class EdgeWeightGenerate : public vtkm::worklet::WorkletMapPointToCell
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{
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public:
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typedef vtkm::worklet::ScatterCounting ScatterType;
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typedef void ControlSignature(
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CellSetIn cellset, // Cell set
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FieldInPoint<Scalar> fieldIn, // Input point field defining the contour
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FieldInPoint<Vec3> pcoordIn // Input point coordinates
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);
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typedef void ExecutionSignature(CellShape, _2, _3, WorkIndex, VisitIndex, FromIndices);
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typedef _1 InputDomain;
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VTKM_CONT
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EdgeWeightGenerate(vtkm::Float64 isovalue,
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bool genNormals,
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const EdgeWeightGenerateMetaData<ScalarType, NormalStorageType, DeviceAdapter>& meta) :
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Isovalue(isovalue),
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GenerateNormals(genNormals),
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MetaData( meta )
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{
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}
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template<typename FieldInType, // Vec-like, one per input point
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typename CoordType,
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typename IndicesVecType>
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VTKM_EXEC
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void operator()(
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vtkm::CellShapeTagGeneric shape,
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const FieldInType & fieldIn, // Input point field defining the contour
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const CoordType & coords, // Input point coordinates
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vtkm::Id outputCellId,
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vtkm::IdComponent visitIndex,
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const IndicesVecType & indices) const
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{ //covers when we have hexs coming from unstructured data
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VTKM_ASSUME( shape.Id == CELL_SHAPE_HEXAHEDRON );
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this->operator()(vtkm::CellShapeTagHexahedron(),
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fieldIn,
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coords,
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outputCellId,
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visitIndex,
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indices);
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}
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template<typename FieldInType, // Vec-like, one per input point
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typename CoordType,
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typename IndicesVecType>
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VTKM_EXEC
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void operator()(
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CellShapeTagQuad vtkmNotUsed(shape),
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const FieldInType & vtkmNotUsed(fieldIn), // Input point field defining the contour
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const CoordType & vtkmNotUsed(coords), // Input point coordinates
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vtkm::Id vtkmNotUsed(outputCellId),
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vtkm::IdComponent vtkmNotUsed(visitIndex),
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const IndicesVecType & vtkmNotUsed(indices) ) const
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{ //covers when we have quads coming from 2d structured data
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}
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template<typename FieldInType, // Vec-like, one per input point
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typename CoordType,
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typename IndicesVecType>
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VTKM_EXEC
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void operator()(
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vtkm::CellShapeTagHexahedron shape,
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const FieldInType &fieldIn, // Input point field defining the contour
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const CoordType &coords, // Input point coordinates
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vtkm::Id outputCellId,
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vtkm::IdComponent visitIndex,
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const IndicesVecType &indices) const
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{ //covers when we have hexs coming from 3d structured data
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const vtkm::Id outputPointId = 3 * outputCellId;
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typedef typename vtkm::VecTraits<FieldInType>::ComponentType FieldType;
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const FieldType iso = static_cast<FieldType>(this->Isovalue);
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// Compute the Marching Cubes case number for this cell
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const vtkm::IdComponent caseNumber =
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GetHexahedronClassification(fieldIn, iso);
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// Interpolate for vertex positions and associated scalar values
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const vtkm::Id triTableOffset =
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static_cast<vtkm::Id>(caseNumber*16 + visitIndex*3);
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for (vtkm::IdComponent triVertex = 0; triVertex < 3; triVertex++)
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{
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const vtkm::IdComponent edgeIndex =
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MetaData.TriTable.Get(triTableOffset + triVertex);
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const vtkm::IdComponent edgeVertex0 = MetaData.EdgeTable.Get(2*edgeIndex + 0);
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const vtkm::IdComponent edgeVertex1 = MetaData.EdgeTable.Get(2*edgeIndex + 1);
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const FieldType fieldValue0 = fieldIn[edgeVertex0];
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const FieldType fieldValue1 = fieldIn[edgeVertex1];
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//need to factor in outputCellId
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MetaData.InterpIdPortal.Set(
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outputPointId+triVertex,
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vtkm::Id2(indices[edgeVertex0], indices[edgeVertex1]));
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vtkm::FloatDefault interpolant =
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static_cast<vtkm::FloatDefault>(iso - fieldValue0) /
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static_cast<vtkm::FloatDefault>(fieldValue1 - fieldValue0);
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//need to factor in outputCellId
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MetaData.InterpWeightsPortal.Set(outputPointId+triVertex, interpolant);
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if(this->GenerateNormals)
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{
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const vtkm::Vec<vtkm::FloatDefault,3> edgePCoord0 =
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vtkm::exec::ParametricCoordinatesPoint(
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fieldIn.GetNumberOfComponents(), edgeVertex0, shape, *this);
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const vtkm::Vec<vtkm::FloatDefault,3> edgePCoord1 =
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vtkm::exec::ParametricCoordinatesPoint(
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fieldIn.GetNumberOfComponents(), edgeVertex1, shape, *this);
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const vtkm::Vec<vtkm::FloatDefault,3> interpPCoord =
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vtkm::Lerp(edgePCoord0, edgePCoord1, interpolant);
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//need to factor in outputCellId
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MetaData.NormalPortal.Set(outputPointId+triVertex,
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vtkm::Normal(vtkm::exec::CellDerivative(
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fieldIn, coords, interpPCoord, shape, *this))
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);
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}
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}
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}
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VTKM_CONT
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ScatterType GetScatter() const
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{
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return this->MetaData.Scatter;
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}
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private:
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const vtkm::Float64 Isovalue;
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const bool GenerateNormals;
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EdgeWeightGenerateMetaData<ScalarType, NormalStorageType, DeviceAdapter> MetaData;
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// Not implemented
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void operator=(const EdgeWeightGenerate<ScalarType,NormalStorageType,DeviceAdapter> &);
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};
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// ---------------------------------------------------------------------------
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class ApplyToField : public vtkm::worklet::WorkletMapField
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{
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public:
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typedef void ControlSignature(FieldIn< Id2Type > interpolation_ids,
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FieldIn< Scalar > interpolation_weights,
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WholeArrayIn<> inputField,
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FieldOut<> output
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);
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typedef void ExecutionSignature(_1, _2, _3, _4);
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typedef _1 InputDomain;
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VTKM_CONT
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ApplyToField() {}
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template <typename WeightType, typename InFieldPortalType, typename OutFieldType>
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VTKM_EXEC
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void operator()(const vtkm::Id2& low_high,
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const WeightType &weight,
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const InFieldPortalType& inPortal,
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OutFieldType &result) const
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{
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//fetch the low / high values from inPortal
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result = vtkm::Lerp(inPortal.Get(low_high[0]),
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inPortal.Get(low_high[1]),
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weight);
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}
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};
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// ---------------------------------------------------------------------------
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struct FirstValueSame
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{
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template<typename T, typename U>
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VTKM_EXEC_CONT bool operator()(const vtkm::Pair<T,U>& a,
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const vtkm::Pair<T,U>& b) const
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{
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return (a.first == b.first);
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}
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};
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}
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/// \brief Compute the isosurface for a uniform grid data set
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class MarchingCubes
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{
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public:
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//----------------------------------------------------------------------------
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MarchingCubes(bool mergeDuplicates=true):
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MergeDuplicatePoints(mergeDuplicates),
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EdgeTable(),
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NumTrianglesTable(),
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TriangleTable(),
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InterpolationWeights(),
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InterpolationIds()
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{
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// Set up the Marching Cubes case tables as part of the filter so that
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// we cache these tables in the execution environment between execution runs
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this->EdgeTable =
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vtkm::cont::make_ArrayHandle(vtkm::worklet::internal::edgeTable, 24);
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this->NumTrianglesTable =
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vtkm::cont::make_ArrayHandle(vtkm::worklet::internal::numTrianglesTable, 256);
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this->TriangleTable =
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vtkm::cont::make_ArrayHandle(vtkm::worklet::internal::triTable, 256*16);
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}
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//----------------------------------------------------------------------------
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void SetMergeDuplicatePoints(bool merge)
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{
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this->MergeDuplicatePoints = merge;
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}
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//----------------------------------------------------------------------------
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bool GetMergeDuplicatePoints( ) const
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{
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return this->MergeDuplicatePoints;
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}
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//----------------------------------------------------------------------------
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template<typename ValueType,
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typename CellSetType,
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typename CoordinateSystem,
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typename StorageTagField,
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typename CoordinateType,
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typename StorageTagVertices,
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typename DeviceAdapter>
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vtkm::cont::CellSetSingleType< >
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Run(const ValueType &isovalue,
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const CellSetType& cells,
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const CoordinateSystem& coordinateSystem,
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const vtkm::cont::ArrayHandle<ValueType, StorageTagField>& input,
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vtkm::cont::ArrayHandle< vtkm::Vec<CoordinateType,3>, StorageTagVertices > vertices,
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const DeviceAdapter& device)
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{
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vtkm::cont::ArrayHandle< vtkm::Vec<CoordinateType,3> > normals;
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return this->DoRun(isovalue,cells,coordinateSystem,input,vertices,normals,false,device);
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}
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//----------------------------------------------------------------------------
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template<typename ValueType,
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typename CellSetType,
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typename CoordinateSystem,
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typename StorageTagField,
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typename CoordinateType,
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typename StorageTagVertices,
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typename StorageTagNormals,
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typename DeviceAdapter>
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vtkm::cont::CellSetSingleType< >
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Run(const ValueType &isovalue,
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const CellSetType& cells,
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const CoordinateSystem& coordinateSystem,
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const vtkm::cont::ArrayHandle<ValueType, StorageTagField>& input,
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vtkm::cont::ArrayHandle< vtkm::Vec<CoordinateType,3>, StorageTagVertices > vertices,
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vtkm::cont::ArrayHandle< vtkm::Vec<CoordinateType,3>, StorageTagNormals > normals,
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const DeviceAdapter& device)
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{
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return this->DoRun(isovalue,cells,coordinateSystem,input,vertices,normals,true,device);
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}
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//----------------------------------------------------------------------------
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template<typename ArrayHandleIn,
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typename ArrayHandleOut,
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typename DeviceAdapter>
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void MapFieldOntoIsosurface(const ArrayHandleIn& input,
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ArrayHandleOut& output,
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const DeviceAdapter&)
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{
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using vtkm::worklet::marchingcubes::ApplyToField;
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ApplyToField applyToField;
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vtkm::worklet::DispatcherMapField<ApplyToField,
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DeviceAdapter> applyFieldDispatcher(applyToField);
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//todo: need to use the policy to get the correct storage tag for output
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applyFieldDispatcher.Invoke(this->InterpolationIds,
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this->InterpolationWeights,
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input,
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output);
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}
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private:
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//----------------------------------------------------------------------------
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template<typename ValueType,
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typename CellSetType,
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typename CoordinateSystem,
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typename StorageTagField,
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typename StorageTagVertices,
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typename StorageTagNormals,
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typename CoordinateType,
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typename DeviceAdapter>
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vtkm::cont::CellSetSingleType< >
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DoRun(const ValueType &isovalue,
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const CellSetType& cells,
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const CoordinateSystem& coordinateSystem,
|
|
const vtkm::cont::ArrayHandle<ValueType, StorageTagField>& inputField,
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vtkm::cont::ArrayHandle< vtkm::Vec<CoordinateType,3>, StorageTagVertices > vertices,
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|
vtkm::cont::ArrayHandle< vtkm::Vec<CoordinateType,3>, StorageTagNormals > normals,
|
|
bool withNormals,
|
|
const DeviceAdapter& )
|
|
{
|
|
using vtkm::worklet::marchingcubes::ApplyToField;
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|
using vtkm::worklet::marchingcubes::EdgeWeightGenerate;
|
|
using vtkm::worklet::marchingcubes::EdgeWeightGenerateMetaData;
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|
using vtkm::worklet::marchingcubes::ClassifyCell;
|
|
|
|
// Setup the Dispatcher Typedefs
|
|
typedef typename vtkm::worklet::DispatcherMapTopology<
|
|
ClassifyCell<ValueType>,
|
|
DeviceAdapter
|
|
> ClassifyDispatcher;
|
|
|
|
typedef typename vtkm::worklet::DispatcherMapTopology<
|
|
EdgeWeightGenerate<CoordinateType,
|
|
StorageTagNormals,
|
|
DeviceAdapter
|
|
>,
|
|
DeviceAdapter
|
|
> GenerateDispatcher;
|
|
|
|
|
|
// Call the ClassifyCell functor to compute the Marching Cubes case numbers
|
|
// for each cell, and the number of vertices to be generated
|
|
ClassifyCell<ValueType> classifyCell( isovalue );
|
|
ClassifyDispatcher classifyCellDispatcher(classifyCell);
|
|
|
|
vtkm::cont::ArrayHandle<vtkm::IdComponent> numOutputTrisPerCell;
|
|
classifyCellDispatcher.Invoke(inputField,
|
|
cells,
|
|
numOutputTrisPerCell,
|
|
this->NumTrianglesTable);
|
|
|
|
|
|
//Pass 2 Generate the edges
|
|
vtkm::worklet::ScatterCounting scatter(numOutputTrisPerCell, DeviceAdapter());
|
|
|
|
EdgeWeightGenerateMetaData< CoordinateType,
|
|
StorageTagNormals,
|
|
DeviceAdapter
|
|
> metaData( scatter.GetOutputRange(numOutputTrisPerCell.GetNumberOfValues()),
|
|
normals,
|
|
this->InterpolationWeights,
|
|
this->InterpolationIds,
|
|
this->EdgeTable,
|
|
this->NumTrianglesTable,
|
|
this->TriangleTable,
|
|
scatter
|
|
);
|
|
|
|
EdgeWeightGenerate<CoordinateType,
|
|
StorageTagNormals,
|
|
DeviceAdapter
|
|
> weightGenerate( isovalue,
|
|
withNormals,
|
|
metaData);
|
|
|
|
GenerateDispatcher edgeDispatcher(weightGenerate);
|
|
edgeDispatcher.Invoke( cells,
|
|
//cast to a scalar field if not one, as cellderivative only works on those
|
|
marchingcubes::make_ScalarField(inputField),
|
|
coordinateSystem
|
|
);
|
|
|
|
//Now that we have the edge interpolation finished we can generate the
|
|
//following:
|
|
//1. Coordinates ( with option to do point merging )
|
|
//
|
|
//
|
|
typedef vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapter> Algorithm;
|
|
|
|
vtkm::cont::DataSet output;
|
|
vtkm::cont::ArrayHandle< vtkm::Id > connectivity;
|
|
|
|
typedef vtkm::cont::ArrayHandle< vtkm::Id2 > Id2HandleType;
|
|
typedef vtkm::cont::ArrayHandle<vtkm::FloatDefault> WeightHandleType;
|
|
if(this->MergeDuplicatePoints)
|
|
{
|
|
//Do merge duplicate points we need to do the following:
|
|
//1. Copy the interpolation Ids
|
|
Id2HandleType uniqueIds;
|
|
Algorithm::Copy(this->InterpolationIds, uniqueIds);
|
|
|
|
if(withNormals)
|
|
{
|
|
typedef vtkm::cont::ArrayHandle< vtkm::Vec<CoordinateType,3>, StorageTagNormals > NormalHandlType;
|
|
typedef vtkm::cont::ArrayHandleZip<WeightHandleType, NormalHandlType> KeyType;
|
|
KeyType keys = vtkm::cont::make_ArrayHandleZip(this->InterpolationWeights, normals);
|
|
|
|
//2. now we need to do a sort by key, making duplicate ids be adjacent
|
|
Algorithm::SortByKey(uniqueIds, keys);
|
|
|
|
//3. lastly we need to do a unique by key, but since vtkm doesn't
|
|
// offer that feature, we use a zip handle.
|
|
// We need to use a custom comparison operator as we only want to compare
|
|
// the id2 which is the first entry in the zip pair
|
|
vtkm::cont::ArrayHandleZip<Id2HandleType, KeyType> zipped =
|
|
vtkm::cont::make_ArrayHandleZip(uniqueIds,keys);
|
|
Algorithm::Unique( zipped, marchingcubes::FirstValueSame());
|
|
}
|
|
else
|
|
{
|
|
//2. now we need to do a sort by key, making duplicate ids be adjacent
|
|
Algorithm::SortByKey(uniqueIds, this->InterpolationWeights);
|
|
|
|
//3. lastly we need to do a unique by key, but since vtkm doesn't
|
|
// offer that feature, we use a zip handle.
|
|
// We need to use a custom comparison operator as we only want to compare
|
|
// the id2 which is the first entry in the zip pair
|
|
vtkm::cont::ArrayHandleZip<Id2HandleType, WeightHandleType> zipped =
|
|
vtkm::cont::make_ArrayHandleZip(uniqueIds, this->InterpolationWeights);
|
|
Algorithm::Unique( zipped, marchingcubes::FirstValueSame());
|
|
}
|
|
|
|
//4.
|
|
//LowerBounds generates the output cell connections. It does this by
|
|
//finding for each interpolationId where it would be inserted in the
|
|
//sorted & unique subset, which generates an index value aka the lookup
|
|
//value.
|
|
//
|
|
Algorithm::LowerBounds(uniqueIds, this->InterpolationIds, connectivity);
|
|
|
|
//5.
|
|
//We re-assign the shortened version of unique ids back into the
|
|
//member variable so that 'DoMapField' will work properly
|
|
this->InterpolationIds = uniqueIds;
|
|
}
|
|
else
|
|
{
|
|
//when we don't merge points, the connectivity array can be represented
|
|
//by a counting array. The danger of doing it this way is that the output
|
|
//type is unknown. That is why we use a CellSetSingleType with explicit
|
|
//storage;
|
|
{
|
|
|
|
vtkm::cont::ArrayHandleIndex temp(this->InterpolationIds.GetNumberOfValues());
|
|
Algorithm::Copy(temp, connectivity);
|
|
}
|
|
}
|
|
|
|
//assign the connectivity to the cell set
|
|
CellShapeTagTriangle triangleTag;
|
|
vtkm::cont::CellSetSingleType< > outputCells( triangleTag );
|
|
outputCells.Fill( connectivity );
|
|
|
|
//generate the vertices's
|
|
ApplyToField applyToField;
|
|
vtkm::worklet::DispatcherMapField<ApplyToField,
|
|
DeviceAdapter> applyFieldDispatcher(applyToField);
|
|
|
|
applyFieldDispatcher.Invoke(this->InterpolationIds,
|
|
this->InterpolationWeights,
|
|
coordinateSystem,
|
|
vertices);
|
|
|
|
return outputCells;
|
|
}
|
|
|
|
bool MergeDuplicatePoints;
|
|
|
|
vtkm::cont::ArrayHandle<vtkm::IdComponent> EdgeTable;
|
|
vtkm::cont::ArrayHandle<vtkm::IdComponent> NumTrianglesTable;
|
|
vtkm::cont::ArrayHandle<vtkm::IdComponent> TriangleTable;
|
|
|
|
vtkm::cont::ArrayHandle<vtkm::FloatDefault> InterpolationWeights;
|
|
vtkm::cont::ArrayHandle<vtkm::Id2> InterpolationIds;
|
|
};
|
|
|
|
}
|
|
} // namespace vtkm::worklet
|
|
|
|
#endif // vtk_m_worklet_MarchingCubes_h
|