A fancy ArrayHandle that turns a vector array into a scalar array by slicing out a single component of each vector. More...

#include <ArrayHandleExtractComponent.h>

Inheritance diagram for vtkm::cont::ArrayHandleExtractComponent< ArrayHandleType >:

Public Types
using	Thisclass = typename vtkm::cont::detail::GetTypeInParentheses< void(ArrayHandleExtractComponent< ArrayHandleType >) >::type

using	Superclass = typename vtkm::cont::detail::GetTypeInParentheses< void(vtkm::cont::ArrayHandle< typename vtkm::VecTraits< typename ArrayHandleType::ValueType >::ComponentType, StorageTagExtractComponent< ArrayHandleType > >) >::type

using	ValueType = typename Superclass::ValueType

using	StorageTag = typename Superclass::StorageTag

using	StorageType = typename Superclass::StorageType

using	ReadPortalType = typename Superclass::ReadPortalType

using	WritePortalType = typename Superclass::WritePortalType

Public Types inherited from vtkm::cont::ArrayHandle< vtkm::VecTraits< ArrayHandleType::ValueType >::ComponentType, StorageTagExtractComponent< ArrayHandleType > >
using	ValueType = vtkm::VecTraits< ArrayHandleType::ValueType >::ComponentType

using	StorageTag = StorageTagExtractComponent< ArrayHandleType >

using	StorageType = vtkm::cont::internal::Storage< ValueType, StorageTag >

using	ReadPortalType = typename StorageType::ReadPortalType

using	WritePortalType = typename StorageType::WritePortalType

Public Member Functions
	ArrayHandleExtractComponent ()

VTKM_CONT	ArrayHandleExtractComponent (const Thisclass &src)

VTKM_CONT	ArrayHandleExtractComponent (Thisclass &&src) noexcept

VTKM_CONT	ArrayHandleExtractComponent (const vtkm::cont::ArrayHandle< typename Superclass::ValueType, typename Superclass::StorageTag > &src)

VTKM_CONT	ArrayHandleExtractComponent (vtkm::cont::ArrayHandle< typename Superclass::ValueType, typename Superclass::StorageTag > &&src) noexcept

VTKM_CONT	ArrayHandleExtractComponent (const std::vector< vtkm::cont::internal::Buffer > &buffers)

VTKM_CONT	ArrayHandleExtractComponent (std::vector< vtkm::cont::internal::Buffer > &&buffers) noexcept

VTKM_CONT Thisclass &	operator= (const Thisclass &src)

VTKM_CONT Thisclass &	operator= (Thisclass &&src) noexcept

	ArrayHandleExtractComponent (const ArrayHandleType &array, vtkm::IdComponent component)

vtkm::IdComponent	GetComponent () const

ArrayHandleType	GetArray () const

Public Member Functions inherited from vtkm::cont::ArrayHandle< vtkm::VecTraits< ArrayHandleType::ValueType >::ComponentType, StorageTagExtractComponent< ArrayHandleType > >
	ArrayHandle ()
	Constructs an empty ArrayHandle. More...

	ArrayHandle (const vtkm::cont::ArrayHandle< ValueType, StorageTag > &src)
	Copy constructor. More...

	ArrayHandle (vtkm::cont::ArrayHandle< ValueType, StorageTag > &&src) noexcept
	Move constructor. More...

	ArrayHandle (const std::vector< vtkm::cont::internal::Buffer > &buffers)
	Special constructor for subclass specializations that need to set the initial state array. More...

	ArrayHandle (std::vector< vtkm::cont::internal::Buffer > &&buffers) noexcept
	Special constructor for subclass specializations that need to set the initial state array. More...

	~ArrayHandle ()
	Destructs an empty ArrayHandle. More...

vtkm::cont::ArrayHandle< ValueType, StorageTag > &	operator= (const vtkm::cont::ArrayHandle< ValueType, StorageTag > &src)
	Shallow copies an ArrayHandle. More...

vtkm::cont::ArrayHandle< ValueType, StorageTag > &	operator= (vtkm::cont::ArrayHandle< ValueType, StorageTag > &&src) noexcept
	Move and Assignment of an ArrayHandle. More...

bool	operator== (const ArrayHandle< ValueType, StorageTag > &rhs) const
	Like a pointer, two `ArrayHandle`s are considered equal if they point to the same location in memory. More...

bool	operator== (const ArrayHandle< VT, ST > &) const

bool	operator!= (const ArrayHandle< ValueType, StorageTag > &rhs) const

bool	operator!= (const ArrayHandle< VT, ST > &) const

StorageType	GetStorage () const
	Get the storage. More...

ReadPortalType	ReadPortal () const
	Get an array portal that can be used in the control environment. More...

ReadPortalType	ReadPortal (vtkm::cont::Token &token) const

WritePortalType	WritePortal () const
	Get an array portal that can be used in the control environment. More...

WritePortalType	WritePortal (vtkm::cont::Token &token) const
	Get an array portal that can be used in the control environment. More...

vtkm::Id	GetNumberOfValues () const
	Returns the number of entries in the array. More...

vtkm::IdComponent	GetNumberOfComponentsFlat () const
	Returns the total number of components for each value in the array. More...

void	Allocate (vtkm::Id numberOfValues, vtkm::CopyFlag preserve, vtkm::cont::Token &token) const
	Allocates an array large enough to hold the given number of values. More...

void	Allocate (vtkm::Id numberOfValues, vtkm::CopyFlag preserve=vtkm::CopyFlag::Off) const
	Allocates an array large enough to hold the given number of values. More...

void	AllocateAndFill (vtkm::Id numberOfValues, const ValueType &fillValue, vtkm::CopyFlag preserve, vtkm::cont::Token &token) const
	Allocates an array and fills it with an initial value. More...

void	AllocateAndFill (vtkm::Id numberOfValues, const ValueType &fillValue, vtkm::CopyFlag preserve=vtkm::CopyFlag::Off) const
	Allocates an array and fills it with an initial value. More...

void	Fill (const ValueType &fillValue, vtkm::Id startIndex, vtkm::Id endIndex, vtkm::cont::Token &token) const
	Fills the array with a given value. More...

void	Fill (const ValueType &fillValue, vtkm::Id startIndex, vtkm::Id endIndex) const
	Fills the array with a given value. More...

void	Fill (const ValueType &fillValue, vtkm::Id startIndex=0) const
	Fills the array with a given value. More...

void	ReleaseResourcesExecution () const
	Releases any resources being used in the execution environment (that are not being shared by the control environment). More...

void	ReleaseResources () const
	Releases all resources in both the control and execution environments. More...

ReadPortalType	PrepareForInput (vtkm::cont::DeviceAdapterId device, vtkm::cont::Token &token) const
	Prepares this array to be used as an input to an operation in the execution environment. More...

WritePortalType	PrepareForInPlace (vtkm::cont::DeviceAdapterId device, vtkm::cont::Token &token) const
	Prepares this array to be used in an in-place operation (both as input and output) in the execution environment. More...

WritePortalType	PrepareForOutput (vtkm::Id numberOfValues, vtkm::cont::DeviceAdapterId device, vtkm::cont::Token &token) const
	Prepares (allocates) this array to be used as an output from an operation in the execution environment. More...

bool	IsOnDevice (vtkm::cont::DeviceAdapterId device) const
	Returns true if the ArrayHandle's data is on the given device. More...

bool	IsOnHost () const
	Returns true if the ArrayHandle's data is on the host. More...

void	SyncControlArray () const
	Synchronizes the control array with the execution array. More...

void	Enqueue (const vtkm::cont::Token &token) const
	Enqueue a token for access to this ArrayHandle. More...

void	DeepCopyFrom (const vtkm::cont::ArrayHandle< ValueType, StorageTag > &source) const
	Deep copies the data in the array. More...

const std::vector< vtkm::cont::internal::Buffer > &	GetBuffers () const
	Returns the internal `Buffer` structures that hold the data. More...

std::vector< vtkm::cont::internal::Buffer > &	GetBuffers ()

Additional Inherited Members
Protected Member Functions inherited from vtkm::cont::ArrayHandle< vtkm::VecTraits< ArrayHandleType::ValueType >::ComponentType, StorageTagExtractComponent< ArrayHandleType > >
void	SetBuffer (vtkm::IdComponent index, const vtkm::cont::internal::Buffer &buffer)

void	SetBuffers (const std::vector< vtkm::cont::internal::Buffer > &buffers)

void	SetBuffers (std::vector< vtkm::cont::internal::Buffer > &&buffers)

Detailed Description

template<typename ArrayHandleType>
class vtkm::cont::ArrayHandleExtractComponent< ArrayHandleType >

A fancy ArrayHandle that turns a vector array into a scalar array by slicing out a single component of each vector.

ArrayHandleExtractComponent is a specialization of ArrayHandle. It takes an input ArrayHandle with a vtkm::Vec ValueType and a component index and uses this information to expose a scalar array consisting of the specified component across all vectors in the input ArrayHandle. So for a given index i, ArrayHandleExtractComponent looks up the i-th vtkm::Vec in the index array and reads or writes to the specified component, leave all other components unmodified. This is done on the fly rather than creating a copy of the array.