187 lines
4.9 KiB
C++
187 lines
4.9 KiB
C++
//============================================================================
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// Copyright (c) Kitware, Inc.
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// All rights reserved.
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// See LICENSE.txt for details.
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//
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// This software is distributed WITHOUT ANY WARRANTY; without even
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// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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// PURPOSE. See the above copyright notice for more information.
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//============================================================================
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#ifndef vtk_m_cont_ArrayHandleCounting_h
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#define vtk_m_cont_ArrayHandleCounting_h
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#include <vtkm/cont/ArrayHandleImplicit.h>
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#include <vtkm/VecTraits.h>
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namespace vtkm
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{
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namespace cont
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{
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struct VTKM_ALWAYS_EXPORT StorageTagCounting
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{
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};
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namespace internal
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{
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/// \brief An implicit array portal that returns an counting value.
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template <class CountingValueType>
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class VTKM_ALWAYS_EXPORT ArrayPortalCounting
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{
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using ComponentType = typename vtkm::VecTraits<CountingValueType>::ComponentType;
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public:
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using ValueType = CountingValueType;
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VTKM_EXEC_CONT
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ArrayPortalCounting()
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: Start(0)
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, Step(1)
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, NumberOfValues(0)
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{
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}
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VTKM_EXEC_CONT
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ArrayPortalCounting(ValueType start, ValueType step, vtkm::Id numValues)
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: Start(start)
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, Step(step)
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, NumberOfValues(numValues)
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{
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}
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VTKM_EXEC_CONT
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ValueType GetStart() const { return this->Start; }
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VTKM_EXEC_CONT
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ValueType GetStep() const { return this->Step; }
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VTKM_EXEC_CONT
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vtkm::Id GetNumberOfValues() const { return this->NumberOfValues; }
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VTKM_EXEC_CONT
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ValueType Get(vtkm::Id index) const
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{
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return ValueType(this->Start + this->Step * ValueType(static_cast<ComponentType>(index)));
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}
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private:
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ValueType Start;
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ValueType Step;
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vtkm::Id NumberOfValues;
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};
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template <typename T>
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using StorageTagCountingSuperclass =
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vtkm::cont::StorageTagImplicit<internal::ArrayPortalCounting<T>>;
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template <typename T>
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struct Storage<T, vtkm::cont::StorageTagCounting> : Storage<T, StorageTagCountingSuperclass<T>>
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{
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};
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} // namespace internal
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template <typename T>
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VTKM_ARRAY_HANDLE_NEW_STYLE(T, vtkm::cont::StorageTagCounting);
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/// ArrayHandleCounting is a specialization of ArrayHandle. By default it
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/// contains a increment value, that is increment for each step between zero
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/// and the passed in length
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template <typename CountingValueType>
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class ArrayHandleCounting
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: public vtkm::cont::ArrayHandle<CountingValueType, vtkm::cont::StorageTagCounting>
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{
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public:
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VTKM_ARRAY_HANDLE_SUBCLASS(ArrayHandleCounting,
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(ArrayHandleCounting<CountingValueType>),
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(vtkm::cont::ArrayHandle<CountingValueType, StorageTagCounting>));
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VTKM_CONT
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ArrayHandleCounting(CountingValueType start, CountingValueType step, vtkm::Id length)
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: Superclass(internal::PortalToArrayHandleImplicitBuffers(
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internal::ArrayPortalCounting<CountingValueType>(start, step, length)))
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{
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}
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};
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/// A convenience function for creating an ArrayHandleCounting. It takes the
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/// value to start counting from and and the number of times to increment.
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template <typename CountingValueType>
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VTKM_CONT vtkm::cont::ArrayHandleCounting<CountingValueType>
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make_ArrayHandleCounting(CountingValueType start, CountingValueType step, vtkm::Id length)
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{
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return vtkm::cont::ArrayHandleCounting<CountingValueType>(start, step, length);
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}
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}
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} // namespace vtkm::cont
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//=============================================================================
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// Specializations of serialization related classes
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/// @cond SERIALIZATION
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namespace vtkm
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{
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namespace cont
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{
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template <typename T>
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struct SerializableTypeString<vtkm::cont::ArrayHandleCounting<T>>
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{
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static VTKM_CONT const std::string& Get()
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{
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static std::string name = "AH_Counting<" + SerializableTypeString<T>::Get() + ">";
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return name;
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}
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};
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template <typename T>
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struct SerializableTypeString<vtkm::cont::ArrayHandle<T, vtkm::cont::StorageTagCounting>>
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: SerializableTypeString<vtkm::cont::ArrayHandleCounting<T>>
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{
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};
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}
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} // vtkm::cont
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namespace mangled_diy_namespace
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{
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template <typename T>
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struct Serialization<vtkm::cont::ArrayHandleCounting<T>>
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{
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private:
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using Type = vtkm::cont::ArrayHandleCounting<T>;
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using BaseType = vtkm::cont::ArrayHandle<typename Type::ValueType, typename Type::StorageTag>;
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public:
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static VTKM_CONT void save(BinaryBuffer& bb, const BaseType& obj)
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{
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auto portal = obj.ReadPortal();
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vtkmdiy::save(bb, portal.GetStart());
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vtkmdiy::save(bb, portal.GetStep());
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vtkmdiy::save(bb, portal.GetNumberOfValues());
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}
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static VTKM_CONT void load(BinaryBuffer& bb, BaseType& obj)
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{
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T start{}, step{};
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vtkm::Id count = 0;
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vtkmdiy::load(bb, start);
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vtkmdiy::load(bb, step);
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vtkmdiy::load(bb, count);
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obj = vtkm::cont::make_ArrayHandleCounting(start, step, count);
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}
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};
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template <typename T>
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struct Serialization<vtkm::cont::ArrayHandle<T, vtkm::cont::StorageTagCounting>>
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: Serialization<vtkm::cont::ArrayHandleCounting<T>>
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{
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};
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} // diy
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/// @endcond SERIALIZATION
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#endif //vtk_m_cont_ArrayHandleCounting_h
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