mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 13:23:51 +00:00
199 lines
6.3 KiB
C++
199 lines
6.3 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_CoordinateSystem_h
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#define vtk_m_cont_CoordinateSystem_h
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#include <vtkm/Bounds.h>
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#include <vtkm/cont/ArrayHandleCast.h>
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#include <vtkm/cont/CastAndCall.h>
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#include <vtkm/cont/Field.h>
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#include <vtkm/cont/UncertainArrayHandle.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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/// @brief Manages a coordinate system for a `DataSet`.
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///
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/// A coordinate system is really a field with a special meaning, so `CoordinateSystem`
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/// class inherits from the `Field` class. `CoordinateSystem` constrains the field to
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/// be associated with points and typically has 3D floating point vectors for values.
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class VTKM_CONT_EXPORT CoordinateSystem : public vtkm::cont::Field
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{
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using Superclass = vtkm::cont::Field;
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public:
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VTKM_CONT
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CoordinateSystem();
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// It's OK for regular _point_ fields to become a CoordinateSystem object.
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VTKM_CONT CoordinateSystem(const vtkm::cont::Field& src);
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VTKM_CONT CoordinateSystem(std::string name, const vtkm::cont::UnknownArrayHandle& data);
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template <typename T, typename Storage>
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VTKM_CONT CoordinateSystem(std::string name, const ArrayHandle<T, Storage>& data)
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: Superclass(name, Association::Points, data)
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{
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}
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/// This constructor of coordinate system sets up a regular grid of points.
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///
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VTKM_CONT
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CoordinateSystem(std::string name,
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vtkm::Id3 dimensions,
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vtkm::Vec3f origin = vtkm::Vec3f(0.0f, 0.0f, 0.0f),
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vtkm::Vec3f spacing = vtkm::Vec3f(1.0f, 1.0f, 1.0f));
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VTKM_CONT
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vtkm::Id GetNumberOfPoints() const { return this->GetNumberOfValues(); }
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VTKM_CONT vtkm::cont::UncertainArrayHandle<vtkm::TypeListFieldVec3, VTKM_DEFAULT_STORAGE_LIST>
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GetData() const;
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private:
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#ifdef VTKM_USE_DOUBLE_PRECISION
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using FloatNonDefault = vtkm::Float32;
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#else
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using FloatNonDefault = vtkm::Float64;
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#endif
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using Vec3f_nd = vtkm::Vec<FloatNonDefault, 3>;
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struct StorageToArrayDefault
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{
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template <typename S>
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using IsInvalid = vtkm::cont::internal::IsInvalidArrayHandle<vtkm::Vec3f, S>;
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template <typename S>
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using Transform = vtkm::cont::ArrayHandle<vtkm::Vec3f, S>;
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};
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struct StorageToArrayNonDefault
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{
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template <typename S>
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using IsInvalid = vtkm::cont::internal::IsInvalidArrayHandle<Vec3f_nd, S>;
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template <typename S>
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using Transform =
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vtkm::cont::ArrayHandleCast<vtkm::Vec3f, vtkm::cont::ArrayHandle<Vec3f_nd, S>>;
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};
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using ArraysFloatDefault = vtkm::ListTransform<
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vtkm::ListRemoveIf<VTKM_DEFAULT_STORAGE_LIST, StorageToArrayDefault::IsInvalid>,
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StorageToArrayDefault::Transform>;
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using ArraysFloatNonDefault = vtkm::ListTransform<
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vtkm::ListRemoveIf<VTKM_DEFAULT_STORAGE_LIST, StorageToArrayNonDefault::IsInvalid>,
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StorageToArrayNonDefault::Transform>;
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public:
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using MultiplexerArrayType = //
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vtkm::cont::ArrayHandleMultiplexerFromList<
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vtkm::ListAppend<ArraysFloatDefault, ArraysFloatNonDefault>>;
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/// \brief Returns the data for the coordinate system as an `ArrayHandleMultiplexer`.
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///
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/// This array will handle all potential types supported by CoordinateSystem, so all types can be
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/// handled with one compile pass. However, using this precludes specialization for special
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/// arrays such as `ArrayHandleUniformPointCoordinates` that could have optimized code paths
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///
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VTKM_CONT MultiplexerArrayType GetDataAsMultiplexer() const;
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VTKM_CONT
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void GetRange(vtkm::Range* range) const { this->Superclass::GetRange(range); }
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VTKM_CONT
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vtkm::Vec<vtkm::Range, 3> GetRange() const
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{
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vtkm::Vec<vtkm::Range, 3> range;
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this->GetRange(&range[0]);
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return range;
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}
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VTKM_CONT
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vtkm::cont::ArrayHandle<vtkm::Range> GetRangeAsArrayHandle() const
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{
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return this->Superclass::GetRange();
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}
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VTKM_CONT
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vtkm::Bounds GetBounds() const
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{
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vtkm::Range ranges[3];
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this->GetRange(ranges);
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return vtkm::Bounds(ranges[0], ranges[1], ranges[2]);
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}
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void PrintSummary(std::ostream& out) const override;
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/// Releases any resources being used in the execution environment (that are
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/// not being shared by the control environment).
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VTKM_CONT void ReleaseResourcesExecution() override
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{
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this->Superclass::ReleaseResourcesExecution();
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this->GetData().ReleaseResourcesExecution();
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}
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};
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template <typename Functor, typename... Args>
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void CastAndCall(const vtkm::cont::CoordinateSystem& coords, Functor&& f, Args&&... args)
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{
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CastAndCall(coords.GetData(), std::forward<Functor>(f), std::forward<Args>(args)...);
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}
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template <typename T>
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vtkm::cont::CoordinateSystem make_CoordinateSystem(std::string name,
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const std::vector<T>& data,
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vtkm::CopyFlag copy = vtkm::CopyFlag::Off)
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{
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return vtkm::cont::CoordinateSystem(name, vtkm::cont::make_ArrayHandle(data, copy));
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}
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template <typename T>
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vtkm::cont::CoordinateSystem make_CoordinateSystem(std::string name,
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const T* data,
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vtkm::Id numberOfValues,
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vtkm::CopyFlag copy = vtkm::CopyFlag::Off)
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{
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return vtkm::cont::CoordinateSystem(name,
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vtkm::cont::make_ArrayHandle(data, numberOfValues, copy));
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}
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namespace internal
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{
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template <>
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struct DynamicTransformTraits<vtkm::cont::CoordinateSystem>
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{
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using DynamicTag = vtkm::cont::internal::DynamicTransformTagCastAndCall;
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};
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} // namespace internal
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} // namespace cont
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} // namespace vtkm
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//=============================================================================
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// Specializations of serialization related classes
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/// @cond SERIALIZATION
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namespace mangled_diy_namespace
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{
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template <>
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struct Serialization<vtkm::cont::CoordinateSystem> : Serialization<vtkm::cont::Field>
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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_CoordinateSystem_h
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