mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-09-19 18:45:43 +00:00
51f0100b26
Originally, DynamicArrayHandle only automatically handled the default type and storage lists. There was an internal subclass that expanded that to user defined lists, but it was a bit inaccessible. This change makes DynamicArrayHandle match the structure of DynamicCellSet. There is now a templated base class named DynamicArrayHandleBase that can accept any pair of lists. DynamicArrayHandle itself is really just a typedef of DynamicArrayHandleBase with the default lists.
294 lines
9.9 KiB
C++
294 lines
9.9 KiB
C++
//============================================================================
|
|
// Copyright (c) Kitware, Inc.
|
|
// All rights reserved.
|
|
// See LICENSE.txt for details.
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
//
|
|
// Copyright 2015 Sandia Corporation.
|
|
// Copyright 2015 UT-Battelle, LLC.
|
|
// Copyright 2015 Los Alamos National Security.
|
|
//
|
|
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
|
|
// the U.S. Government retains certain rights in this software.
|
|
//
|
|
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
|
|
// Laboratory (LANL), the U.S. Government retains certain rights in
|
|
// this software.
|
|
//============================================================================
|
|
#ifndef vtk_m_cont_DynamicCellSet_h
|
|
#define vtk_m_cont_DynamicCellSet_h
|
|
|
|
#include <vtkm/cont/CellSet.h>
|
|
#include <vtkm/cont/CellSetListTag.h>
|
|
#include <vtkm/cont/ErrorControlBadValue.h>
|
|
|
|
#include <vtkm/cont/internal/DynamicTransform.h>
|
|
#include <vtkm/cont/internal/SimplePolymorphicContainer.h>
|
|
|
|
VTKM_THIRDPARTY_PRE_INCLUDE
|
|
#include <boost/smart_ptr/shared_ptr.hpp>
|
|
VTKM_THIRDPARTY_POST_INCLUDE
|
|
|
|
namespace vtkm {
|
|
namespace cont {
|
|
|
|
// Forward declaration.
|
|
template<typename CellSetList>
|
|
class DynamicCellSetBase;
|
|
|
|
namespace detail {
|
|
|
|
// One instance of a template class cannot access the private members of
|
|
// another instance of a template class. However, I want to be able to copy
|
|
// construct a DynamicCellSet from another DynamicCellSet of any other type.
|
|
// Since you cannot partially specialize friendship, use this accessor class to
|
|
// get at the internals for the copy constructor.
|
|
struct DynamicCellSetCopyHelper {
|
|
template<typename CellSetList>
|
|
VTKM_CONT_EXPORT
|
|
static
|
|
boost::shared_ptr<vtkm::cont::internal::SimplePolymorphicContainerBase>
|
|
GetCellSetContainer(const vtkm::cont::DynamicCellSetBase<CellSetList> &src)
|
|
{
|
|
return src.CellSetContainer;
|
|
}
|
|
};
|
|
|
|
} // namespace detail
|
|
|
|
/// \brief Holds a cell set without having to specify concrete type.
|
|
///
|
|
/// \c DynamicCellSet holds a \c CellSet object using runtime polymorphism to
|
|
/// manage different subclass types and template parameters of the subclasses
|
|
/// rather than compile-time templates. This adds a programming convenience
|
|
/// that helps avoid a proliferation of templates. It also provides the
|
|
/// management necessary to interface VTK-m with data sources where types will
|
|
/// not be known until runtime.
|
|
///
|
|
/// To interface between the runtime polymorphism and the templated algorithms
|
|
/// in VTK-m, \c DynamicCellSet contains a method named \c CastAndCall that
|
|
/// will determine the correct type from some known list of cell set types.
|
|
/// This mechanism is used internally by VTK-m's worklet invocation mechanism
|
|
/// to determine the type when running algorithms.
|
|
///
|
|
/// By default, \c DynamicCellSet will assume that the value type in the array
|
|
/// matches one of the types specified by \c VTKM_DEFAULT_CELL_SET_LIST_TAG.
|
|
/// This list can be changed by using the \c ResetTypeList method. It is
|
|
/// worthwhile to match these lists closely to the possible types that might be
|
|
/// used. If a type is missing you will get a runtime error. If there are more
|
|
/// types than necessary, then the template mechanism will create a lot of
|
|
/// object code that is never used, and keep in mind that the number of
|
|
/// combinations grows exponentially when using multiple \c Dynamic* objects.
|
|
///
|
|
/// The actual implementation of \c DynamicCellSet is in a templated class
|
|
/// named \c DynamicCellSetBase, which is templated on the list of cell set
|
|
/// types. \c DynamicCellSet is really just a typedef of \c DynamicCellSetBase
|
|
/// with the default cell set list.
|
|
///
|
|
template<typename CellSetList>
|
|
class DynamicCellSetBase
|
|
{
|
|
VTKM_IS_LIST_TAG(CellSetList);
|
|
public:
|
|
VTKM_CONT_EXPORT
|
|
DynamicCellSetBase() { }
|
|
|
|
template<typename CellSetType>
|
|
VTKM_CONT_EXPORT
|
|
DynamicCellSetBase(const CellSetType &cellSet)
|
|
: CellSetContainer(
|
|
new vtkm::cont::internal::SimplePolymorphicContainer<CellSetType>(
|
|
cellSet))
|
|
{
|
|
VTKM_IS_CELL_SET(CellSetType);
|
|
}
|
|
|
|
VTKM_CONT_EXPORT
|
|
DynamicCellSetBase(const DynamicCellSetBase<CellSetList> &src)
|
|
: CellSetContainer(src.CellSetContainer) { }
|
|
|
|
template<typename OtherCellSetList>
|
|
VTKM_CONT_EXPORT
|
|
explicit
|
|
DynamicCellSetBase(const DynamicCellSetBase<OtherCellSetList> &src)
|
|
: CellSetContainer(
|
|
detail::DynamicCellSetCopyHelper::GetCellSetContainer(src))
|
|
{ }
|
|
|
|
/// Returns true if this cell set is of the provided type.
|
|
///
|
|
template<typename CellSetType>
|
|
VTKM_CONT_EXPORT
|
|
bool IsType(CellSetType = CellSetType()) const {
|
|
return (this->TryCast<CellSetType>() != NULL);
|
|
}
|
|
|
|
/// Returns the contained cell set as the abstract \c CellSet type.
|
|
///
|
|
VTKM_CONT_EXPORT
|
|
const vtkm::cont::CellSet &GetCellSet() const {
|
|
return *reinterpret_cast<const vtkm::cont::CellSet *>(
|
|
this->CellSetContainer->GetVoidPointer());
|
|
}
|
|
|
|
/// Returns this cell set cast to a concrete \c CellSet object of the given
|
|
/// type. Throws ErrorControlBadValue if the cast does not work. Use
|
|
/// IsTypeAndStorage to check if the cast can happen.
|
|
///
|
|
template<typename CellSetType>
|
|
VTKM_CONT_EXPORT
|
|
const CellSetType &CastTo(CellSetType = CellSetType()) const {
|
|
const vtkm::cont::internal::SimplePolymorphicContainer<CellSetType> *
|
|
container = this->TryCast<CellSetType>();
|
|
if (container == NULL)
|
|
{
|
|
throw vtkm::cont::ErrorControlBadValue("Bad cast of dynamic cell set.");
|
|
}
|
|
return container->Item;
|
|
}
|
|
template<typename CellSetType>
|
|
VTKM_CONT_EXPORT
|
|
CellSetType &CastTo(CellSetType = CellSetType()) {
|
|
vtkm::cont::internal::SimplePolymorphicContainer<CellSetType> *
|
|
container = this->TryCast<CellSetType>();
|
|
if (container == NULL)
|
|
{
|
|
throw vtkm::cont::ErrorControlBadValue("Bad cast of dynamic cell set.");
|
|
}
|
|
return container->Item;
|
|
}
|
|
|
|
/// Changes the cell set types to try casting to when resolving this dynamic
|
|
/// cell set, which is specified with a list tag like those in
|
|
/// CellSetListTag.h. Since C++ does not allow you to actually change the
|
|
/// template arguments, this method returns a new dynamic cell setobject.
|
|
/// This method is particularly useful to narrow down (or expand) the types
|
|
/// when using a cell set of particular constraints.
|
|
///
|
|
template<typename NewCellSetList>
|
|
VTKM_CONT_EXPORT
|
|
DynamicCellSetBase<NewCellSetList>
|
|
ResetCellSetList(NewCellSetList = NewCellSetList()) const {
|
|
VTKM_IS_LIST_TAG(NewCellSetList);
|
|
return DynamicCellSetBase<NewCellSetList>(*this);
|
|
}
|
|
|
|
/// Attempts to cast the held cell set to a specific concrete type, then call
|
|
/// the given functor with the cast cell set. The cell sets tried in the cast
|
|
/// are those in the \c CellSetList template argument of the \c
|
|
/// DynamicCellSetBase class (or \c VTKM_DEFAULT_CELL_SET_LIST_TAG for \c
|
|
/// DynamicCellSet). You can use \c ResetCellSetList to get different
|
|
/// behavior from \c CastAndCall.
|
|
///
|
|
template<typename Functor>
|
|
VTKM_CONT_EXPORT
|
|
void CastAndCall(const Functor &f) const;
|
|
|
|
/// \brief Create a new cell set of the same type as this cell set.
|
|
///
|
|
/// This method creates a new cell setthat is the same type as this one and
|
|
/// returns a new dynamic cell set for it. This method is convenient when
|
|
/// creating output data sets that should be the same type as some input cell
|
|
/// set.
|
|
///
|
|
VTKM_CONT_EXPORT
|
|
DynamicCellSetBase<CellSetList> NewInstance() const
|
|
{
|
|
DynamicCellSetBase<CellSetList> newCellSet;
|
|
newCellSet.CellSetContainer = this->CellSetContainer->NewInstance();
|
|
return newCellSet;
|
|
}
|
|
|
|
private:
|
|
boost::shared_ptr<vtkm::cont::internal::SimplePolymorphicContainerBase>
|
|
CellSetContainer;
|
|
|
|
friend struct detail::DynamicCellSetCopyHelper;
|
|
|
|
template<typename CellSetType>
|
|
VTKM_CONT_EXPORT
|
|
vtkm::cont::internal::SimplePolymorphicContainer<CellSetType> *
|
|
TryCast() const {
|
|
return
|
|
dynamic_cast<
|
|
vtkm::cont::internal::SimplePolymorphicContainer<CellSetType> *>(
|
|
this->CellSetContainer.get());
|
|
}
|
|
};
|
|
|
|
namespace detail {
|
|
|
|
template<typename Functor>
|
|
struct DynamicCellSetTryCellSet
|
|
{
|
|
const vtkm::cont::CellSet *AbstractCellSet;
|
|
const Functor &Function;
|
|
bool FoundCast;
|
|
|
|
VTKM_CONT_EXPORT
|
|
DynamicCellSetTryCellSet(const vtkm::cont::CellSet &cellSet,
|
|
const Functor &f)
|
|
: AbstractCellSet(&cellSet), Function(f), FoundCast(false) { }
|
|
|
|
template<typename CellSetType>
|
|
VTKM_CONT_EXPORT
|
|
void operator()(CellSetType) {
|
|
if (!this->FoundCast)
|
|
{
|
|
const CellSetType *cellSet =
|
|
dynamic_cast<const CellSetType *>(this->AbstractCellSet);
|
|
if (cellSet != NULL)
|
|
{
|
|
this->Function(*cellSet);
|
|
this->FoundCast = true;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
template<typename Functor, typename CellSetTypeList>
|
|
VTKM_CONT_EXPORT
|
|
void CastAndCallCellSet(
|
|
const Functor &f,
|
|
const vtkm::cont::DynamicCellSetBase<CellSetTypeList> &cellSet)
|
|
{
|
|
typedef detail::DynamicCellSetTryCellSet<Functor> TryCellSetType;
|
|
TryCellSetType tryCellSet = TryCellSetType(cellSet.GetCellSet(), f);
|
|
vtkm::ListForEach(tryCellSet, CellSetTypeList());
|
|
if (!tryCellSet.FoundCast)
|
|
{
|
|
throw vtkm::cont::ErrorControlBadValue(
|
|
"Could not find appropriate cast for cell set.");
|
|
}
|
|
}
|
|
|
|
} // namespace detail
|
|
|
|
template<typename CellSetList>
|
|
template<typename Functor>
|
|
VTKM_CONT_EXPORT
|
|
void DynamicCellSetBase<CellSetList>::CastAndCall(const Functor &f) const
|
|
{
|
|
detail::CastAndCallCellSet(f, *this);
|
|
}
|
|
|
|
typedef DynamicCellSetBase<vtkm::cont::CellSetListTagCommon> DynamicCellSet;
|
|
|
|
namespace internal {
|
|
|
|
template<typename CellSetList>
|
|
struct DynamicTransformTraits<
|
|
vtkm::cont::DynamicCellSetBase<CellSetList> >
|
|
{
|
|
typedef vtkm::cont::internal::DynamicTransformTagCastAndCall DynamicTag;
|
|
};
|
|
|
|
} // namespace internal
|
|
|
|
}
|
|
} // namespace vtkm::cont
|
|
|
|
#endif //vtk_m_cont_DynamicCellSet_h
|