mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 10:35:42 +00:00
310 lines
13 KiB
C++
310 lines
13 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//
|
|
// Copyright 2014 Sandia Corporation.
|
|
// Copyright 2014 UT-Battelle, LLC.
|
|
// Copyright 2014 Los Alamos National Security.
|
|
//
|
|
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
|
|
// the U.S. Government retains certain rights in this software.
|
|
//
|
|
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
|
|
// Laboratory (LANL), the U.S. Government retains certain rights in
|
|
// this software.
|
|
//============================================================================
|
|
|
|
#ifndef vtk_m_worklet_Gradient_h
|
|
#define vtk_m_worklet_Gradient_h
|
|
|
|
#include <vtkm/CellTraits.h>
|
|
#include <vtkm/VecFromPortal.h>
|
|
#include <vtkm/VecFromPortalPermute.h>
|
|
#include <vtkm/exec/CellDerivative.h>
|
|
#include <vtkm/exec/ExecutionWholeArray.h>
|
|
#include <vtkm/exec/ParametricCoordinates.h>
|
|
#include <vtkm/worklet/WorkletMapField.h>
|
|
#include <vtkm/worklet/WorkletMapTopology.h>
|
|
|
|
#include <vtkm/exec/CellDerivative.h>
|
|
|
|
namespace vtkm
|
|
{
|
|
namespace worklet
|
|
{
|
|
|
|
struct GradientInTypes : vtkm::ListTagBase<vtkm::Float32, vtkm::Float64,
|
|
vtkm::Vec<vtkm::Float32, 3>, vtkm::Vec<vtkm::Float64, 3>>
|
|
{
|
|
};
|
|
|
|
struct GradientOutTypes
|
|
: vtkm::ListTagBase<vtkm::Vec<vtkm::Float32, 3>, vtkm::Vec<vtkm::Float64, 3>,
|
|
vtkm::Vec<vtkm::Vec<vtkm::Float32, 3>, 3>,
|
|
vtkm::Vec<vtkm::Vec<vtkm::Float64, 3>, 3>>
|
|
{
|
|
};
|
|
|
|
struct GradientVecOutTypes : vtkm::ListTagBase<vtkm::Vec<vtkm::Vec<vtkm::Float32, 3>, 3>,
|
|
vtkm::Vec<vtkm::Vec<vtkm::Float64, 3>, 3>>
|
|
{
|
|
};
|
|
|
|
struct CellGradient : vtkm::worklet::WorkletMapPointToCell
|
|
{
|
|
typedef void ControlSignature(CellSetIn, FieldInPoint<Vec3> pointCoordinates,
|
|
FieldInPoint<GradientInTypes> inputField,
|
|
FieldOutCell<GradientOutTypes> outputField);
|
|
|
|
typedef void ExecutionSignature(CellShape, PointCount, _2, _3, _4);
|
|
typedef _1 InputDomain;
|
|
|
|
template <typename CellTagType, typename PointCoordVecType, typename FieldInVecType,
|
|
typename FieldOutType>
|
|
VTKM_EXEC void operator()(CellTagType shape, vtkm::IdComponent pointCount,
|
|
const PointCoordVecType& pointCoordinates,
|
|
const FieldInVecType& inputField, FieldOutType& outputField) const
|
|
{
|
|
//To confirm that we have the proper input and output types we need
|
|
//to verify that input type matches the output vtkm::Vec<T> 'T' type.
|
|
//For example:
|
|
// input is float => output is vtkm::Vec<float>
|
|
// input is vtkm::Vec<float> => output is vtkm::Vec< vtkm::Vec< float > >
|
|
|
|
//Grab the dimension tag for the input
|
|
using InValueType = typename FieldInVecType::ComponentType;
|
|
using InDimensionTag = typename TypeTraits<InValueType>::DimensionalityTag;
|
|
|
|
//grab the dimension tag for the output component type
|
|
using OutValueType = typename FieldOutType::ComponentType;
|
|
using OutDimensionTag = typename TypeTraits<OutValueType>::DimensionalityTag;
|
|
|
|
//Verify that input and output dimension tags match
|
|
using Matches = typename std::is_same<InDimensionTag, OutDimensionTag>::type;
|
|
|
|
this->Compute(shape, pointCount, pointCoordinates, inputField, outputField, Matches());
|
|
}
|
|
|
|
template <typename CellShapeTag, typename PointCoordVecType, typename FieldInVecType,
|
|
typename FieldOutType>
|
|
VTKM_EXEC void Compute(CellShapeTag shape, vtkm::IdComponent pointCount,
|
|
const PointCoordVecType& wCoords, const FieldInVecType& field,
|
|
FieldOutType& outputField, std::true_type) const
|
|
{
|
|
vtkm::Vec<vtkm::FloatDefault, 3> center =
|
|
vtkm::exec::ParametricCoordinatesCenter(pointCount, shape, *this);
|
|
|
|
outputField = vtkm::exec::CellDerivative(field, wCoords, center, shape, *this);
|
|
}
|
|
|
|
template <typename CellShapeTag, typename PointCoordVecType, typename FieldInVecType,
|
|
typename FieldOutType>
|
|
VTKM_EXEC void Compute(CellShapeTag, vtkm::IdComponent, const PointCoordVecType&,
|
|
const FieldInVecType&, FieldOutType&, std::false_type) const
|
|
{
|
|
//this is invalid
|
|
}
|
|
};
|
|
|
|
struct PointGradient : public vtkm::worklet::WorkletMapCellToPoint
|
|
{
|
|
typedef void ControlSignature(CellSetIn, WholeCellSetIn<Point, Cell>,
|
|
WholeArrayIn<Vec3> pointCoordinates,
|
|
WholeArrayIn<GradientInTypes> inputField,
|
|
FieldOutPoint<GradientOutTypes> outputField);
|
|
|
|
typedef void ExecutionSignature(CellCount, CellIndices, WorkIndex, _2, _3, _4, _5);
|
|
typedef _1 InputDomain;
|
|
|
|
template <typename FromIndexType, typename CellSetInType, typename WholeCoordinatesIn,
|
|
typename WholeFieldIn, typename FieldOutType>
|
|
VTKM_EXEC void operator()(const vtkm::IdComponent& numCells, const FromIndexType& cellIds,
|
|
const vtkm::Id& pointId, const CellSetInType& geometry,
|
|
const WholeCoordinatesIn& pointCoordinates,
|
|
const WholeFieldIn& inputField, FieldOutType& outputField) const
|
|
{
|
|
//To confirm that we have the proper input and output types we need
|
|
//to verify that input type matches the output vtkm::Vec<T> 'T' type.
|
|
//For example:
|
|
// input is float => output is vtkm::Vec<float>
|
|
// input is vtkm::Vec<float> => output is vtkm::Vec< vtkm::Vec< float > >
|
|
|
|
//Grab the dimension tag for the input
|
|
using InValueType = typename WholeFieldIn::ValueType;
|
|
using InDimensionTag = typename TypeTraits<InValueType>::DimensionalityTag;
|
|
|
|
//grab the dimension tag for the output component type
|
|
using OutValueType = typename FieldOutType::ComponentType;
|
|
using OutDimensionTag = typename TypeTraits<OutValueType>::DimensionalityTag;
|
|
|
|
//Verify that input and output dimension tags match
|
|
using Matches = typename std::is_same<InDimensionTag, OutDimensionTag>::type;
|
|
this->Compute(numCells, cellIds, pointId, geometry, pointCoordinates, inputField, outputField,
|
|
Matches());
|
|
}
|
|
|
|
template <typename FromIndexType, typename CellSetInType, typename WholeCoordinatesIn,
|
|
typename WholeFieldIn, typename FieldOutType>
|
|
VTKM_EXEC void Compute(const vtkm::IdComponent& numCells, const FromIndexType& cellIds,
|
|
const vtkm::Id& pointId, const CellSetInType& geometry,
|
|
const WholeCoordinatesIn& pointCoordinates, const WholeFieldIn& inputField,
|
|
FieldOutType& outputField, std::true_type) const
|
|
{
|
|
using ThreadIndices = vtkm::exec::arg::ThreadIndicesTopologyMap<CellSetInType>;
|
|
using ValueType = typename WholeFieldIn::ValueType;
|
|
using CellShapeTag = typename CellSetInType::CellShapeTag;
|
|
|
|
vtkm::Vec<ValueType, 3> gradient(ValueType(0.0));
|
|
for (vtkm::IdComponent i = 0; i < numCells; ++i)
|
|
{
|
|
const vtkm::Id cellId = cellIds[i];
|
|
ThreadIndices cellIndices(cellId, cellId, 0, geometry);
|
|
|
|
const CellShapeTag cellShape = cellIndices.GetCellShape();
|
|
|
|
// compute the parametric coordinates for the current point
|
|
const auto wCoords = this->GetValues(cellIndices, pointCoordinates);
|
|
const auto field = this->GetValues(cellIndices, inputField);
|
|
|
|
const vtkm::IdComponent pointIndexForCell = this->GetPointIndexForCell(cellIndices, pointId);
|
|
|
|
this->ComputeGradient(cellShape, pointIndexForCell, wCoords, field, gradient);
|
|
}
|
|
|
|
using BaseGradientType = typename vtkm::BaseComponent<ValueType>::Type;
|
|
const BaseGradientType invNumCells =
|
|
static_cast<BaseGradientType>(1.) / static_cast<BaseGradientType>(numCells);
|
|
using OutValueType = typename FieldOutType::ComponentType;
|
|
outputField[0] = static_cast<OutValueType>(gradient[0] * invNumCells);
|
|
outputField[1] = static_cast<OutValueType>(gradient[1] * invNumCells);
|
|
outputField[2] = static_cast<OutValueType>(gradient[2] * invNumCells);
|
|
}
|
|
|
|
template <typename FromIndexType, typename CellSetInType, typename WholeCoordinatesIn,
|
|
typename WholeFieldIn, typename FieldOutType>
|
|
VTKM_EXEC void Compute(const vtkm::IdComponent&, const FromIndexType&, const vtkm::Id&,
|
|
const CellSetInType&, const WholeCoordinatesIn&, const WholeFieldIn&,
|
|
FieldOutType&, std::false_type) const
|
|
{
|
|
//this is invalid, as the input and output types don't match.
|
|
//e.g input is float => output is vtkm::Vec< vtkm::Vec< float > >
|
|
}
|
|
|
|
private:
|
|
template <typename CellShapeTag, typename PointCoordVecType, typename FieldInVecType,
|
|
typename OutValueType>
|
|
inline VTKM_EXEC void ComputeGradient(CellShapeTag cellShape,
|
|
const vtkm::IdComponent& pointIndexForCell,
|
|
const PointCoordVecType& wCoords,
|
|
const FieldInVecType& field,
|
|
vtkm::Vec<OutValueType, 3>& gradient) const
|
|
{
|
|
vtkm::Vec<vtkm::FloatDefault, 3> pCoords;
|
|
vtkm::exec::ParametricCoordinatesPoint(wCoords.GetNumberOfComponents(), pointIndexForCell,
|
|
pCoords, cellShape, *this);
|
|
|
|
//we need to add this to a return value
|
|
gradient += vtkm::exec::CellDerivative(field, wCoords, pCoords, cellShape, *this);
|
|
}
|
|
|
|
template <typename CellSetInType>
|
|
VTKM_EXEC vtkm::IdComponent GetPointIndexForCell(
|
|
const vtkm::exec::arg::ThreadIndicesTopologyMap<CellSetInType>& indices, vtkm::Id pointId) const
|
|
{
|
|
vtkm::IdComponent result = 0;
|
|
const auto& topo = indices.GetIndicesFrom();
|
|
for (vtkm::IdComponent i = 0; i < topo.GetNumberOfComponents(); ++i)
|
|
{
|
|
if (topo[i] == pointId)
|
|
{
|
|
result = i;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
//This is fairly complex so that we can trigger code to extract
|
|
//VecRectilinearPointCoordinates when using structured connectivity, and
|
|
//uniform point coordinates.
|
|
//c++14 would make the return type simply auto
|
|
template <typename CellSetInType, typename WholeFieldIn>
|
|
VTKM_EXEC
|
|
typename vtkm::exec::arg::Fetch<vtkm::exec::arg::FetchTagArrayTopologyMapIn,
|
|
vtkm::exec::arg::AspectTagDefault,
|
|
vtkm::exec::arg::ThreadIndicesTopologyMap<CellSetInType>,
|
|
typename WholeFieldIn::PortalType>::ValueType
|
|
GetValues(const vtkm::exec::arg::ThreadIndicesTopologyMap<CellSetInType>& indices,
|
|
const WholeFieldIn& in) const
|
|
{
|
|
//the current problem is that when the topology is structured
|
|
//we are passing in an vtkm::Id when it wants a Id2 or an Id3 that
|
|
//represents the flat index of the topology
|
|
using ExecObjectType = typename WholeFieldIn::PortalType;
|
|
using Fetch = vtkm::exec::arg::Fetch<
|
|
vtkm::exec::arg::FetchTagArrayTopologyMapIn, vtkm::exec::arg::AspectTagDefault,
|
|
vtkm::exec::arg::ThreadIndicesTopologyMap<CellSetInType>, ExecObjectType>;
|
|
Fetch fetch;
|
|
return fetch.Load(indices, in.GetPortal());
|
|
}
|
|
};
|
|
|
|
struct Divergence : public vtkm::worklet::WorkletMapField
|
|
{
|
|
typedef void ControlSignature(FieldIn<GradientVecOutTypes> input, FieldOut<Scalar> output);
|
|
typedef void ExecutionSignature(_1, _2);
|
|
typedef _1 InputDomain;
|
|
|
|
template <typename InputType, typename OutputType>
|
|
VTKM_EXEC void operator()(const InputType& input, OutputType& divergence) const
|
|
{
|
|
divergence = input[0][0] + input[1][1] + input[2][2];
|
|
}
|
|
};
|
|
|
|
struct Vorticity : public vtkm::worklet::WorkletMapField
|
|
{
|
|
typedef void ControlSignature(FieldIn<GradientVecOutTypes> input, FieldOut<Vec3> output);
|
|
typedef void ExecutionSignature(_1, _2);
|
|
typedef _1 InputDomain;
|
|
|
|
template <typename InputType, typename OutputType>
|
|
VTKM_EXEC void operator()(const InputType& input, OutputType& vorticity) const
|
|
{
|
|
vorticity[0] = input[2][1] - input[1][2];
|
|
vorticity[1] = input[0][2] - input[2][0];
|
|
vorticity[2] = input[1][0] - input[0][1];
|
|
}
|
|
};
|
|
|
|
struct QCriterion : public vtkm::worklet::WorkletMapField
|
|
{
|
|
typedef void ControlSignature(FieldIn<GradientVecOutTypes> input, FieldOut<Scalar> output);
|
|
typedef void ExecutionSignature(_1, _2);
|
|
typedef _1 InputDomain;
|
|
|
|
template <typename InputType, typename OutputType>
|
|
VTKM_EXEC void operator()(const InputType& input, OutputType& qcriterion) const
|
|
{
|
|
OutputType t1 = ((input[2][1] - input[1][2]) * (input[2][1] - input[1][2]) +
|
|
(input[1][0] - input[0][1]) * (input[1][0] - input[0][1]) +
|
|
(input[0][2] - input[2][0]) * (input[0][2] - input[2][0])) /
|
|
2.0f;
|
|
OutputType t2 = input[0][0] * input[0][0] + input[1][1] * input[1][1] +
|
|
input[2][2] * input[2][2] +
|
|
((input[1][0] + input[0][1]) * (input[1][0] + input[0][1]) +
|
|
(input[2][0] + input[0][2]) * (input[2][0] + input[0][2]) +
|
|
(input[2][1] + input[1][2]) * (input[2][1] + input[1][2])) /
|
|
2.0f;
|
|
|
|
qcriterion = (t1 - t2) / 2.0f;
|
|
}
|
|
};
|
|
}
|
|
} // namespace vtkm::worklet
|
|
|
|
#endif
|