mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-21 11:35:43 +00:00
06a06b529d
The previous version of the bounds code required once less pass across the data, but significantly increase the size of the resulting library: Data for VTK-VTK-m interop: - 7k more symbol table entries - 1.5MB larger library Because of the significant savings we need to use a less efficient implementation that minimized the code size.
521 lines
14 KiB
C++
521 lines
14 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_cont_Field_h
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#define vtk_m_cont_Field_h
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#include <vtkm/Types.h>
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#include <vtkm/Math.h>
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#include <vtkm/VecTraits.h>
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#include <vtkm/cont/ArrayHandle.h>
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#include <vtkm/cont/ArrayHandleTransform.h>
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#include <vtkm/cont/ArrayHandleUniformPointCoordinates.h>
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#include <vtkm/cont/DeviceAdapterAlgorithm.h>
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#include <vtkm/cont/DynamicArrayHandle.h>
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#include <vtkm/cont/internal/ArrayPortalFromIterators.h>
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namespace vtkm {
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namespace cont {
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namespace internal {
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struct BoundsMin
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{
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template<typename T>
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T operator()(const T& a, const T& b)const { return vtkm::Min(a,b); }
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};
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struct BoundsMax
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{
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template<typename T>
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T operator()(const T& a, const T& b)const { return vtkm::Max(a,b); }
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};
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template<typename DeviceAdapterTag>
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class ComputeBounds
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{
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public:
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ComputeBounds(ArrayHandle<vtkm::Float64>& bounds) : Bounds(&bounds) {}
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template<typename ArrayHandleType>
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void operator()(const ArrayHandleType &input) const
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{
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typedef typename ArrayHandleType::ValueType ValueType;
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typedef vtkm::VecTraits<ValueType> VecType;
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const vtkm::IdComponent NumberOfComponents = VecType::NUM_COMPONENTS;
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typedef vtkm::cont::DeviceAdapterAlgorithm<DeviceAdapterTag> Algorithm;
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//not the greatest way of doing this for performance reasons. But
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//this implementation should generate the smallest amount of code
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ValueType initialMin = input.GetPortalConstControl().Get(0);
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ValueType initialMax = initialMin;
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ValueType minResult = Algorithm::Reduce(input, initialMin, BoundsMin());
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ValueType maxResult = Algorithm::Reduce(input, initialMax, BoundsMax());
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this->Bounds->Allocate(NumberOfComponents * 2);
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for (vtkm::IdComponent i = 0; i < NumberOfComponents; ++i)
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{
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this->Bounds->GetPortalControl().Set(i * 2,
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static_cast<vtkm::Float64>(VecType::GetComponent(minResult, i) ) );
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this->Bounds->GetPortalControl().Set(i * 2 + 1,
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static_cast<vtkm::Float64>(VecType::GetComponent(maxResult, i) ) );
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}
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}
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// Special implementation for regular point coordinates, which are easy
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// to determine.
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void operator()(const vtkm::cont::ArrayHandle<
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vtkm::Vec<vtkm::FloatDefault,3>,
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vtkm::cont::ArrayHandleUniformPointCoordinates::StorageTag>
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&array)
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{
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vtkm::internal::ArrayPortalUniformPointCoordinates portal =
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array.GetPortalConstControl();
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// In this portal we know that the min value is the first entry and the
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// max value is the last entry.
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vtkm::Vec<vtkm::FloatDefault,3> minimum = portal.Get(0);
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vtkm::Vec<vtkm::FloatDefault,3> maximum =
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portal.Get(portal.GetNumberOfValues()-1);
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this->Bounds->Allocate(6);
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vtkm::cont::ArrayHandle<vtkm::Float64>::PortalControl outPortal =
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this->Bounds->GetPortalControl();
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outPortal.Set(0, minimum[0]);
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outPortal.Set(1, maximum[0]);
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outPortal.Set(2, minimum[1]);
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outPortal.Set(3, maximum[1]);
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outPortal.Set(4, minimum[2]);
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outPortal.Set(5, maximum[2]);
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}
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private:
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vtkm::cont::ArrayHandle<vtkm::Float64> *Bounds;
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};
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} // namespace internal
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/// A \c Field encapsulates an array on some piece of the mesh, such as
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/// the points, a cell set, a point logical dimension, or the whole mesh.
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///
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class Field
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{
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public:
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enum AssociationEnum
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{
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ASSOC_ANY,
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ASSOC_WHOLE_MESH,
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ASSOC_POINTS,
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ASSOC_CELL_SET,
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ASSOC_LOGICAL_DIM
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};
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/// constructors for points / whole mesh
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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const vtkm::cont::DynamicArrayHandle &data)
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: Name(name),
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Association(association),
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AssocCellSetName(),
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AssocLogicalDim(-1),
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Data(data),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT(this->Association == ASSOC_WHOLE_MESH ||
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this->Association == ASSOC_POINTS);
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}
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template<typename T, typename Storage>
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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const ArrayHandle<T, Storage> &data)
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: Name(name),
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Association(association),
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AssocCellSetName(),
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AssocLogicalDim(-1),
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Data(data),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT((this->Association == ASSOC_WHOLE_MESH) ||
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(this->Association == ASSOC_POINTS));
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}
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template <typename T>
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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const std::vector<T> &data)
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: Name(name),
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Association(association),
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AssocCellSetName(),
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AssocLogicalDim(-1),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT((this->Association == ASSOC_WHOLE_MESH) ||
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(this->Association == ASSOC_POINTS));
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this->CopyData(&data[0], static_cast<vtkm::Id>(data.size()));
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}
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template <typename T>
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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const T *data,
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vtkm::Id nvals)
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: Name(name),
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Association(association),
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AssocCellSetName(),
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AssocLogicalDim(-1),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT((this->Association == ASSOC_WHOLE_MESH) ||
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(this->Association == ASSOC_POINTS));
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this->CopyData(data, nvals);
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}
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/// constructors for cell set associations
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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const std::string& cellSetName,
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const vtkm::cont::DynamicArrayHandle &data)
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: Name(name),
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Association(association),
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AssocCellSetName(cellSetName),
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AssocLogicalDim(-1),
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Data(data),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT(this->Association == ASSOC_CELL_SET);
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}
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template <typename T, typename Storage>
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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const std::string& cellSetName,
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const vtkm::cont::ArrayHandle<T, Storage> &data)
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: Name(name),
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Association(association),
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AssocCellSetName(cellSetName),
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AssocLogicalDim(-1),
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Data(data),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT(this->Association == ASSOC_CELL_SET);
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}
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template <typename T>
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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const std::string& cellSetName,
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const std::vector<T> &data)
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: Name(name),
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Association(association),
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AssocCellSetName(cellSetName),
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AssocLogicalDim(-1),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT(this->Association == ASSOC_CELL_SET);
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this->CopyData(&data[0], static_cast<vtkm::Id>(data.size()));
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}
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template <typename T>
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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const std::string& cellSetName,
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const T *data,
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vtkm::Id nvals)
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: Name(name),
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Association(association),
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AssocCellSetName(cellSetName),
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AssocLogicalDim(-1),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT(this->Association == ASSOC_CELL_SET);
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this->CopyData(data, nvals);
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}
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/// constructors for logical dimension associations
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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vtkm::IdComponent logicalDim,
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const vtkm::cont::DynamicArrayHandle &data)
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: Name(name),
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Association(association),
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AssocCellSetName(),
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AssocLogicalDim(logicalDim),
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Data(data),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT(this->Association == ASSOC_LOGICAL_DIM);
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}
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template <typename T, typename Storage>
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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vtkm::IdComponent logicalDim,
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const vtkm::cont::ArrayHandle<T, Storage> &data)
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: Name(name),
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Association(association),
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AssocLogicalDim(logicalDim),
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Data(data),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT(this->Association == ASSOC_LOGICAL_DIM);
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}
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template <typename T>
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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vtkm::IdComponent logicalDim,
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const std::vector<T> &data)
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: Name(name),
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Association(association),
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AssocLogicalDim(logicalDim),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT(this->Association == ASSOC_LOGICAL_DIM);
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this->CopyData(&data[0], static_cast<vtkm::Id>(data.size()));
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}
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template <typename T>
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VTKM_CONT_EXPORT
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Field(std::string name,
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AssociationEnum association,
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vtkm::IdComponent logicalDim,
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const T *data, vtkm::Id nvals)
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: Name(name),
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Association(association),
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AssocLogicalDim(logicalDim),
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Bounds(),
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ModifiedFlag(true)
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{
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VTKM_ASSERT(this->Association == ASSOC_LOGICAL_DIM);
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CopyData(data, nvals);
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}
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VTKM_CONT_EXPORT
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Field()
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: Name(),
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Association(ASSOC_ANY),
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AssocCellSetName(),
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AssocLogicalDim(),
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Data(),
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Bounds(),
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ModifiedFlag(true)
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{
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//Generate an empty field
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}
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VTKM_CONT_EXPORT
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const std::string &GetName() const
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{
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return this->Name;
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}
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VTKM_CONT_EXPORT
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AssociationEnum GetAssociation() const
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{
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return this->Association;
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}
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VTKM_CONT_EXPORT
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std::string GetAssocCellSet() const
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{
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return this->AssocCellSetName;
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}
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VTKM_CONT_EXPORT
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vtkm::IdComponent GetAssocLogicalDim() const
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{
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return this->AssocLogicalDim;
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}
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template<typename DeviceAdapterTag, typename TypeList, typename StorageList>
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VTKM_CONT_EXPORT
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const vtkm::cont::ArrayHandle<vtkm::Float64>& GetBounds(DeviceAdapterTag,
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TypeList,
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StorageList) const
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{
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if (this->ModifiedFlag)
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{
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internal::ComputeBounds<DeviceAdapterTag> computeBounds(this->Bounds);
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this->Data.ResetTypeAndStorageLists(TypeList(),StorageList()).CastAndCall(computeBounds);
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this->ModifiedFlag = false;
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}
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return this->Bounds;
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}
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template<typename DeviceAdapterTag, typename TypeList, typename StorageList>
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VTKM_CONT_EXPORT
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void GetBounds(vtkm::Float64 *bounds,
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DeviceAdapterTag,
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TypeList,
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StorageList) const
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{
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this->GetBounds(DeviceAdapterTag(), TypeList(), StorageList());
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vtkm::Id length = this->Bounds.GetNumberOfValues();
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for (vtkm::Id i = 0; i < length; ++i)
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{
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bounds[i] = this->Bounds.GetPortalConstControl().Get(i);
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}
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}
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template<typename DeviceAdapterTag, typename TypeList>
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VTKM_CONT_EXPORT
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const vtkm::cont::ArrayHandle<vtkm::Float64>& GetBounds(DeviceAdapterTag,
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TypeList) const
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{
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return this->GetBounds(DeviceAdapterTag(), TypeList(),
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VTKM_DEFAULT_STORAGE_LIST_TAG());
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}
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template<typename DeviceAdapterTag, typename TypeList>
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VTKM_CONT_EXPORT
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void GetBounds(vtkm::Float64 *bounds, DeviceAdapterTag, TypeList) const
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{
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this->GetBounds(bounds, DeviceAdapterTag(), TypeList(),
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VTKM_DEFAULT_STORAGE_LIST_TAG());
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}
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template<typename DeviceAdapterTag>
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VTKM_CONT_EXPORT
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const vtkm::cont::ArrayHandle<vtkm::Float64>& GetBounds(DeviceAdapterTag) const
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{
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return this->GetBounds(DeviceAdapterTag(), VTKM_DEFAULT_TYPE_LIST_TAG(),
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VTKM_DEFAULT_STORAGE_LIST_TAG());
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}
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template<typename DeviceAdapterTag>
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VTKM_CONT_EXPORT
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void GetBounds(vtkm::Float64 *bounds, DeviceAdapterTag) const
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{
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this->GetBounds(bounds, DeviceAdapterTag(), VTKM_DEFAULT_TYPE_LIST_TAG(),
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VTKM_DEFAULT_STORAGE_LIST_TAG());
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}
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VTKM_CONT_EXPORT
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const vtkm::cont::DynamicArrayHandle &GetData() const
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{
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return this->Data;
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}
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VTKM_CONT_EXPORT
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vtkm::cont::DynamicArrayHandle &GetData()
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{
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this->ModifiedFlag = true;
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return this->Data;
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}
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template <typename T>
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VTKM_CONT_EXPORT
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void SetData(const vtkm::cont::ArrayHandle<T> &newdata)
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{
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this->Data = newdata;
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this->ModifiedFlag = true;
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}
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VTKM_CONT_EXPORT
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void SetData(const vtkm::cont::DynamicArrayHandle &newdata)
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{
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this->Data = newdata;
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this->ModifiedFlag = true;
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}
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template <typename T>
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VTKM_CONT_EXPORT
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void CopyData(const T *ptr, vtkm::Id nvals)
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{
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//allocate main memory using an array handle
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vtkm::cont::ArrayHandle<T> tmp;
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tmp.Allocate(nvals);
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//copy into the memory owned by the array handle
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std::copy(ptr,
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ptr + static_cast<std::size_t>(nvals),
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vtkm::cont::ArrayPortalToIteratorBegin(tmp.GetPortalControl()));
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//assign to the dynamic array handle
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this->Data = tmp;
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this->ModifiedFlag = true;
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}
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VTKM_CONT_EXPORT
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virtual void PrintSummary(std::ostream &out) const
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{
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out<<" "<<this->Name;
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out<<" assoc= ";
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switch (this->GetAssociation())
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{
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case ASSOC_ANY: out<<"Any "; break;
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case ASSOC_WHOLE_MESH: out<<"Mesh "; break;
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case ASSOC_POINTS: out<<"Points "; break;
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case ASSOC_CELL_SET: out<<"Cells "; break;
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case ASSOC_LOGICAL_DIM: out<<"LogicalDim "; break;
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}
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this->Data.PrintSummary(out);
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out<<"\n";
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}
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private:
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std::string Name; ///< name of field
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AssociationEnum Association;
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std::string AssocCellSetName; ///< only populate if assoc is cells
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vtkm::IdComponent AssocLogicalDim; ///< only populate if assoc is logical dim
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vtkm::cont::DynamicArrayHandle Data;
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mutable vtkm::cont::ArrayHandle<vtkm::Float64> Bounds;
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mutable bool ModifiedFlag;
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};
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} // namespace cont
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} // namespace vtkm
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#endif //vtk_m_cont_Field_h
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