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d44860c3cf
The tetrahedralize algorithms have been changed to use the Scatter classes to build indices rather than build them on their own. To implement this efficiently with structured grids, a new ScatterUniform class was made. I also added a new execution argument tag that allows you to get the thread indices object from within the worklet.
199 lines
7.5 KiB
C++
199 lines
7.5 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_worklet_WorkletMapTopology_h
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#define vtk_m_worklet_WorkletMapTopology_h
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#include <vtkm/worklet/internal/WorkletBase.h>
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#include <vtkm/TypeListTag.h>
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#include <vtkm/TopologyElementTag.h>
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#include <vtkm/cont/arg/ControlSignatureTagBase.h>
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#include <vtkm/cont/arg/TransportTagArrayIn.h>
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#include <vtkm/cont/arg/TransportTagArrayInOut.h>
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#include <vtkm/cont/arg/TransportTagArrayOut.h>
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#include <vtkm/cont/arg/TransportTagTopologyIn.h>
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#include <vtkm/cont/arg/TypeCheckTagArray.h>
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#include <vtkm/cont/arg/TypeCheckTagTopology.h>
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#include <vtkm/exec/arg/CellShape.h>
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#include <vtkm/exec/arg/FetchTagArrayDirectIn.h>
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#include <vtkm/exec/arg/FetchTagArrayDirectInOut.h>
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#include <vtkm/exec/arg/FetchTagArrayDirectOut.h>
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#include <vtkm/exec/arg/FetchTagTopologyIn.h>
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#include <vtkm/exec/arg/FetchTagArrayTopologyMapIn.h>
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#include <vtkm/exec/arg/FromCount.h>
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#include <vtkm/exec/arg/FromIndices.h>
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#include <vtkm/exec/arg/ThreadIndicesTopologyMap.h>
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namespace vtkm {
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namespace worklet {
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class WorkletMapTopologyBase : public vtkm::worklet::internal::WorkletBase
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{
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public:
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/// \brief A control signature tag for input fields.
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///
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/// This tag takes a template argument that is a type list tag that limits
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/// the possible value types in the array.
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///
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template<typename TypeList = AllTypes>
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struct FieldInTo : vtkm::cont::arg::ControlSignatureTagBase {
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typedef vtkm::cont::arg::TypeCheckTagArray<TypeList> TypeCheckTag;
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typedef vtkm::cont::arg::TransportTagArrayIn TransportTag;
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typedef vtkm::exec::arg::FetchTagArrayDirectIn FetchTag;
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};
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/// \brief A control signature tag for input connectivity.
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///
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/// This tag takes a template argument that is a type list tag that limits
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/// the possible value types in the array.
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///
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template<typename TypeList = AllTypes>
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struct FieldInFrom : vtkm::cont::arg::ControlSignatureTagBase {
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typedef vtkm::cont::arg::TypeCheckTagArray<TypeList> TypeCheckTag;
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typedef vtkm::cont::arg::TransportTagArrayIn TransportTag;
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typedef vtkm::exec::arg::FetchTagArrayTopologyMapIn FetchTag;
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};
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/// \brief A control signature tag for output fields.
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///
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/// This tag takes a template argument that is a type list tag that limits
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/// the possible value types in the array.
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///
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template<typename TypeList = AllTypes>
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struct FieldOut : vtkm::cont::arg::ControlSignatureTagBase {
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typedef vtkm::cont::arg::TypeCheckTagArray<TypeList> TypeCheckTag;
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typedef vtkm::cont::arg::TransportTagArrayOut TransportTag;
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typedef vtkm::exec::arg::FetchTagArrayDirectOut FetchTag;
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};
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/// \brief A control signature tag for input-output (in-place) fields.
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///
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/// This tag takes a template argument that is a type list tag that limits
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/// the possible value types in the array.
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///
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template<typename TypeList = AllTypes>
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struct FieldInOut : vtkm::cont::arg::ControlSignatureTagBase {
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typedef vtkm::cont::arg::TypeCheckTagArray<TypeList> TypeCheckTag;
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typedef vtkm::cont::arg::TransportTagArrayInOut TransportTag;
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typedef vtkm::exec::arg::FetchTagArrayDirectInOut FetchTag;
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};
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/// \brief An execution signature tag for getting the cell shape.
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///
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struct CellShape : vtkm::exec::arg::CellShape { };
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/// \brief An execution signature tag to get the number of from elements.
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///
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/// In a topology map, there are \em from and \em to topology elements
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/// specified. The scheduling occurs on the \em to elements, and for each \em
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/// to element there is some number of incident \em from elements that are
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/// accessible. This \c ExecutionSignature tag provides the number of these
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/// \em from elements that are accessible.
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///
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struct FromCount : vtkm::exec::arg::FromCount { };
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/// \brief An execution signature tag to get the indices of from elements.
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///
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/// In a topology map, there are \em from and \em to topology elements
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/// specified. The scheduling occurs on the \em to elements, and for each \em
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/// to element there is some number of incident \em from elements that are
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/// accessible. This \c ExecutionSignature tag provides the indices of these
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/// \em from elements that are accessible.
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///
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struct FromIndices : vtkm::exec::arg::FromIndices { };
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/// Topology map worklets use topology map indices.
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///
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template<typename T, typename Invocation>
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VTKM_EXEC_EXPORT
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vtkm::exec::arg::ThreadIndicesTopologyMap<typename Invocation::InputDomainType>
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GetThreadIndices(const T& threadIndex, const Invocation &invocation) const
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{
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return vtkm::exec::arg::ThreadIndicesTopologyMap<typename Invocation::InputDomainType>(
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threadIndex, invocation);
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}
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};
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/// Base class for worklets that do a simple mapping of field arrays. All
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/// inputs and outputs are on the same domain. That is, all the arrays are the
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/// same size.
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///
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/// TODO: I also suggest having convenience subclasses for common (supported?)
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/// link directions.
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///
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template<typename FromTopology, typename ToTopology>
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class WorkletMapTopology : public WorkletMapTopologyBase
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{
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public:
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typedef FromTopology FromTopologyType;
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typedef ToTopology ToTopologyType;
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/// \brief A control signature tag for input connectivity.
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///
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struct TopologyIn : vtkm::cont::arg::ControlSignatureTagBase {
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typedef vtkm::cont::arg::TypeCheckTagTopology TypeCheckTag;
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typedef vtkm::cont::arg::TransportTagTopologyIn<FromTopologyType,ToTopologyType> TransportTag;
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typedef vtkm::exec::arg::FetchTagTopologyIn FetchTag;
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};
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};
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/// Base class for worklets that map from Points to Cells.
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///
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class WorkletMapPointToCell: public WorkletMapTopologyBase
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{
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public:
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typedef vtkm::TopologyElementTagPoint FromTopologyType;
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typedef vtkm::TopologyElementTagCell ToTopologyType;
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/// \brief A control signature tag for input connectivity.
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///
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struct TopologyIn : vtkm::cont::arg::ControlSignatureTagBase {
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typedef vtkm::cont::arg::TypeCheckTagTopology TypeCheckTag;
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typedef vtkm::cont::arg::TransportTagTopologyIn<FromTopologyType,ToTopologyType> TransportTag;
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typedef vtkm::exec::arg::FetchTagTopologyIn FetchTag;
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};
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//While we would love to use templates, that feature is not possible
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//until c++11 ( alias templates), so we have to replicate that feature
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//by using inheritance.
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template<typename TypeList = AllTypes >
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struct FieldInPoint : FieldInFrom<TypeList> { };
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template<typename TypeList = AllTypes >
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struct FieldInCell : FieldInTo<TypeList> { };
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template<typename TypeList = AllTypes >
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struct FieldOutCell : FieldOut<TypeList> { };
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template<typename TypeList = AllTypes >
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struct FieldInOutCell : FieldInOut<TypeList> { };
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struct PointIndices : FromIndices { };
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};
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}
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} // namespace vtkm::worklet
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#endif //vtk_m_worklet_WorkletMapTopology_h
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