mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-08 13:23:51 +00:00
5d78780f6e
Rather than try to collect all `LastCell` types inside of a single header and make an uber type, have each cell locator define its own cell locator type and use that.
97 lines
3.1 KiB
C++
97 lines
3.1 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_exec_CellLocatorMultiplexer_h
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#define vtk_m_exec_CellLocatorMultiplexer_h
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#include <vtkm/ErrorCode.h>
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#include <vtkm/TypeList.h>
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#include <vtkm/exec/internal/Variant.h>
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namespace vtkm
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{
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namespace exec
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{
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namespace detail
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{
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struct FindCellFunctor
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{
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template <typename Locator>
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VTKM_EXEC vtkm::ErrorCode operator()(Locator&& locator,
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const vtkm::Vec3f& point,
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vtkm::Id& cellId,
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vtkm::Vec3f& parametric) const
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{
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return locator.FindCell(point, cellId, parametric);
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}
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template <typename Locator, typename LastCell>
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VTKM_EXEC vtkm::ErrorCode operator()(Locator&& locator,
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const vtkm::Vec3f& point,
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vtkm::Id& cellId,
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vtkm::Vec3f& parametric,
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LastCell& lastCell) const
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{
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using ConcreteLastCell = typename std::decay_t<Locator>::LastCell;
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if (!lastCell.template IsType<ConcreteLastCell>())
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{
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lastCell = ConcreteLastCell{};
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}
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return locator.FindCell(point, cellId, parametric, lastCell.template Get<ConcreteLastCell>());
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}
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};
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} // namespace detail
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template <typename... LocatorTypes>
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class VTKM_ALWAYS_EXPORT CellLocatorMultiplexer
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{
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vtkm::exec::internal::Variant<LocatorTypes...> Locators;
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public:
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CellLocatorMultiplexer() = default;
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using LastCell = vtkm::exec::internal::Variant<typename LocatorTypes::LastCell...>;
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template <typename Locator>
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VTKM_CONT CellLocatorMultiplexer(const Locator& locator)
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: Locators(locator)
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{
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}
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VTKM_EXEC vtkm::ErrorCode FindCell(const vtkm::Vec3f& point,
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vtkm::Id& cellId,
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vtkm::Vec3f& parametric) const
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{
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return this->Locators.CastAndCall(detail::FindCellFunctor{}, point, cellId, parametric);
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}
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VTKM_EXEC vtkm::ErrorCode FindCell(const vtkm::Vec3f& point,
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vtkm::Id& cellId,
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vtkm::Vec3f& parametric,
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LastCell& lastCell) const
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{
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return this->Locators.CastAndCall(
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detail::FindCellFunctor{}, point, cellId, parametric, lastCell);
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}
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VTKM_DEPRECATED(1.6, "Locators are no longer pointers. Use . operator.")
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VTKM_EXEC CellLocatorMultiplexer* operator->() { return this; }
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VTKM_DEPRECATED(1.6, "Locators are no longer pointers. Use . operator.")
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VTKM_EXEC const CellLocatorMultiplexer* operator->() const { return this; }
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};
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}
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} // namespace vtkm::exec
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#endif //vtk_m_exec_CellLocatorMultiplexer_h
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