vtkm::exec Namespace Reference

VTK-m Execution Environment. More...

Namespaces
	arg
	cuda
	CUDA implementation for Execution Environment.
	kokkos
	openmp
	CUDA implementation for Execution Environment.
	serial
	CUDA implementation for Execution Environment.
	tbb
	TBB implementation for Execution Environment.
	twolevelgrid

Classes
class	AtomicArrayExecutionObject
struct	BoundaryState
	Provides a neighborhood's placement with respect to the mesh's boundary. More...
class	CellLocatorBoundingIntervalHierarchy
struct	CellLocatorBoundingIntervalHierarchyNode
class	CellLocatorMultiplexer
class	CellLocatorPartitioned
class	CellLocatorRectilinearGrid
class	CellLocatorTwoLevel
class	CellLocatorUniformBins
class	CellLocatorUniformGrid
class	ColorTable
class	ConnectivityExplicit
class	ConnectivityExtrude
class	ConnectivityPermutedVisitCellsWithPoints
class	ConnectivityPermutedVisitPointsWithCells
class	ConnectivityStructured
struct	FieldNeighborhood
	Retrieves field values from a neighborhood. More...
struct	FieldNeighborhood< vtkm::internal::ArrayPortalUniformPointCoordinates >
	Specialization of Neighborhood for ArrayPortalUniformPointCoordinates We can use fast paths inside ArrayPortalUniformPointCoordinates to allow for very fast computation of the coordinates reachable by the neighborhood.
class	FunctorBase
	Base class for all user worklets invoked in the execution environment from a call to vtkm::cont::DeviceAdapterAlgorithm::Schedule. More...
struct	IndicesExtrude
class	PointLocatorSparseGrid
class	ReverseConnectivityExtrude
struct	ReverseIndicesExtrude
class	TaskBase
	Base class for all classes that are used to marshal data from the invocation parameters to the user worklets when invoked in the execution environment. More...

Functions
template<typename FieldVecType , typename WorldCoordType , typename ParametricCoordType , typename CellShapeTag >
vtkm::ErrorCode	CellDerivative (const FieldVecType &field, const WorldCoordType &wCoords, const vtkm::Vec< ParametricCoordType, 3 > &pcoords, CellShapeTag shape, vtkm::Vec< typename FieldVecType::ComponentType, 3 > &result)
template<typename FieldVecType , typename WorldCoordType , typename ParametricCoordType >
vtkm::ErrorCode	CellDerivative (const FieldVecType &, const WorldCoordType &, const vtkm::Vec< ParametricCoordType, 3 > &, vtkm::CellShapeTagEmpty, vtkm::Vec< typename FieldVecType::ComponentType, 3 > &result)
template<typename FieldVecType , typename WorldCoordType , typename ParametricCoordType >
vtkm::ErrorCode	CellDerivative (const FieldVecType &field, const WorldCoordType &wCoords, const vtkm::Vec< ParametricCoordType, 3 > &pcoords, vtkm::CellShapeTagPolyLine, vtkm::Vec< typename FieldVecType::ComponentType, 3 > &result)
template<typename FieldVecType , typename WorldCoordType , typename ParametricCoordType >
vtkm::ErrorCode	CellDerivative (const FieldVecType &field, const WorldCoordType &wCoords, const vtkm::Vec< ParametricCoordType, 3 > &pcoords, vtkm::CellShapeTagPolygon, vtkm::Vec< typename FieldVecType::ComponentType, 3 > &result)
template<typename FieldVecType , typename ParametricCoordType >
vtkm::ErrorCode	CellDerivative (const FieldVecType &field, const vtkm::VecAxisAlignedPointCoordinates< 2 > &wCoords, const vtkm::Vec< ParametricCoordType, 3 > &pcoords, vtkm::CellShapeTagQuad, vtkm::Vec< typename FieldVecType::ComponentType, 3 > &result)
template<typename FieldVecType , typename ParametricCoordType >
vtkm::ErrorCode	CellDerivative (const FieldVecType &field, const vtkm::VecAxisAlignedPointCoordinates< 3 > &wCoords, const vtkm::Vec< ParametricCoordType, 3 > &pcoords, vtkm::CellShapeTagHexahedron, vtkm::Vec< typename FieldVecType::ComponentType, 3 > &result)
template<typename FieldVecType , typename WorldCoordType , typename ParametricCoordType >
vtkm::ErrorCode	CellDerivative (const FieldVecType &pointFieldValues, const WorldCoordType &worldCoordinateValues, const vtkm::Vec< ParametricCoordType, 3 > &parametricCoords, vtkm::CellShapeTagGeneric shape, vtkm::Vec< typename FieldVecType::ComponentType, 3 > &result)
	Take the derivative (get the gradient) of a point field in a cell. More...
template<typename FieldVecType , typename ParametricCoordType , typename CellShapeTag >
vtkm::ErrorCode	CellInterpolate (const FieldVecType &pointFieldValues, const vtkm::Vec< ParametricCoordType, 3 > &pcoords, CellShapeTag tag, typename FieldVecType::ComponentType &result)
template<typename FieldVecType , typename ParametricCoordType >
vtkm::ErrorCode	CellInterpolate (const FieldVecType &, const vtkm::Vec< ParametricCoordType, 3 > &, vtkm::CellShapeTagEmpty, typename FieldVecType::ComponentType &result)
template<typename FieldVecType , typename ParametricCoordType >
vtkm::ErrorCode	CellInterpolate (const FieldVecType &field, const vtkm::Vec< ParametricCoordType, 3 > &pcoords, vtkm::CellShapeTagPolyLine, typename FieldVecType::ComponentType &result)
template<typename FieldVecType , typename ParametricCoordType >
vtkm::ErrorCode	CellInterpolate (const FieldVecType &field, const vtkm::Vec< ParametricCoordType, 3 > &pcoords, vtkm::CellShapeTagPolygon, typename FieldVecType::ComponentType &result)
template<typename ParametricCoordType >
vtkm::ErrorCode	CellInterpolate (const vtkm::VecAxisAlignedPointCoordinates< 2 > &field, const vtkm::Vec< ParametricCoordType, 3 > &pcoords, vtkm::CellShapeTagQuad, vtkm::Vec3f &result)
template<typename ParametricCoordType >
vtkm::ErrorCode	CellInterpolate (const vtkm::VecAxisAlignedPointCoordinates< 3 > &field, const vtkm::Vec< ParametricCoordType, 3 > &pcoords, vtkm::CellShapeTagHexahedron, vtkm::Vec3f &result)
template<typename FieldVecType , typename ParametricCoordType >
vtkm::ErrorCode	CellInterpolate (const FieldVecType &pointFieldValues, const vtkm::Vec< ParametricCoordType, 3 > &parametricCoords, vtkm::CellShapeTagGeneric shape, typename FieldVecType::ComponentType &result)
	Interpolate a point field in a cell. More...
template<typename OutType , typename PointCoordVecType , typename CellShapeType >
OutType	CellMeasure (const vtkm::IdComponent &numPts, const PointCoordVecType &pts, CellShapeType shape, vtkm::ErrorCode &)
	By default, cells have zero measure unless this template is specialized below. More...
template<typename OutType , typename PointCoordVecType >
OutType	CellMeasure (const vtkm::IdComponent &numPts, const PointCoordVecType &pts, vtkm::CellShapeTagLine, vtkm::ErrorCode &ec)
	Compute the arc length of a poly-line cell. More...
template<typename OutType , typename PointCoordVecType >
OutType	CellMeasure (const vtkm::IdComponent &numPts, const PointCoordVecType &pts, vtkm::CellShapeTagTriangle, vtkm::ErrorCode &ec)
	Compute the area of a triangular cell. More...
template<typename OutType , typename PointCoordVecType >
OutType	CellMeasure (const vtkm::IdComponent &numPts, const PointCoordVecType &pts, vtkm::CellShapeTagQuad, vtkm::ErrorCode &ec)
	Compute the area of a quadrilateral cell. More...
template<typename OutType , typename PointCoordVecType >
OutType	ComputeMeasure (const vtkm::IdComponent &, const PointCoordVecType &, vtkm::CellShapeTagPolygon, vtkm::ErrorCode &ec)
template<typename OutType , typename PointCoordVecType >
OutType	CellMeasure (const vtkm::IdComponent &numPts, const PointCoordVecType &pts, vtkm::CellShapeTagTetra, vtkm::ErrorCode &ec)
	Compute the volume of a tetrahedron. More...
template<typename OutType , typename PointCoordVecType >
OutType	CellMeasure (const vtkm::IdComponent &numPts, const PointCoordVecType &pts, vtkm::CellShapeTagHexahedron, vtkm::ErrorCode &ec)
	Compute the volume of a hexahedral cell (approximated via triple product of average edge along each parametric axis). More...
template<typename OutType , typename PointCoordVecType >
OutType	CellMeasure (const vtkm::IdComponent &numPts, const PointCoordVecType &pts, vtkm::CellShapeTagWedge, vtkm::ErrorCode &ec)
	Compute the volume of a wedge cell (approximated as 3 tetrahedra). More...
template<typename OutType , typename PointCoordVecType >
OutType	CellMeasure (const vtkm::IdComponent &numPts, const PointCoordVecType &pts, vtkm::CellShapeTagPyramid, vtkm::ErrorCode &ec)
	Compute the volume of a pyramid (approximated as 2 tetrahedra) More...

Detailed Description

VTK-m Execution Environment.

vtkm::exec defines the publicly accessible API for the VTK-m Execution Environment. Worklets typically use classes/apis defined within this namespace alone.

Function Documentation

CellDerivative() [1/7]

template<typename FieldVecType , typename WorldCoordType , typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellDerivative	(	const FieldVecType &	,
		const WorldCoordType &	,
		const vtkm::Vec< ParametricCoordType, 3 > &	,
		vtkm::CellShapeTagEmpty	,
		vtkm::Vec< typename FieldVecType::ComponentType, 3 > &	result
	)

CellDerivative() [2/7]

template<typename FieldVecType , typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellDerivative	(	const FieldVecType &	field,
		const vtkm::VecAxisAlignedPointCoordinates< 2 > &	wCoords,
		const vtkm::Vec< ParametricCoordType, 3 > &	pcoords,
		vtkm::CellShapeTagQuad	,
		vtkm::Vec< typename FieldVecType::ComponentType, 3 > &	result
	)

CellDerivative() [3/7]

template<typename FieldVecType , typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellDerivative	(	const FieldVecType &	field,
		const vtkm::VecAxisAlignedPointCoordinates< 3 > &	wCoords,
		const vtkm::Vec< ParametricCoordType, 3 > &	pcoords,
		vtkm::CellShapeTagHexahedron	,
		vtkm::Vec< typename FieldVecType::ComponentType, 3 > &	result
	)

CellDerivative() [4/7]

template<typename FieldVecType , typename WorldCoordType , typename ParametricCoordType , typename CellShapeTag >

vtkm::ErrorCode vtkm::exec::CellDerivative	(	const FieldVecType &	field,
		const WorldCoordType &	wCoords,
		const vtkm::Vec< ParametricCoordType, 3 > &	pcoords,
		CellShapeTag	shape,
		vtkm::Vec< typename FieldVecType::ComponentType, 3 > &	result
	)

CellDerivative() [5/7]

template<typename FieldVecType , typename WorldCoordType , typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellDerivative	(	const FieldVecType &	field,
		const WorldCoordType &	wCoords,
		const vtkm::Vec< ParametricCoordType, 3 > &	pcoords,
		vtkm::CellShapeTagPolygon	,
		vtkm::Vec< typename FieldVecType::ComponentType, 3 > &	result
	)

CellDerivative() [6/7]

template<typename FieldVecType , typename WorldCoordType , typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellDerivative	(	const FieldVecType &	field,
		const WorldCoordType &	wCoords,
		const vtkm::Vec< ParametricCoordType, 3 > &	pcoords,
		vtkm::CellShapeTagPolyLine	,
		vtkm::Vec< typename FieldVecType::ComponentType, 3 > &	result
	)

CellDerivative() [7/7]

template<typename FieldVecType , typename WorldCoordType , typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellDerivative	(	const FieldVecType &	pointFieldValues,
		const WorldCoordType &	worldCoordinateValues,
		const vtkm::Vec< ParametricCoordType, 3 > &	parametricCoords,
		vtkm::CellShapeTagGeneric	shape,
		vtkm::Vec< typename FieldVecType::ComponentType, 3 > &	result
	)

Take the derivative (get the gradient) of a point field in a cell.

Given the point field values for each node and the parametric coordinates of a point within the cell, finds the derivative with respect to each coordinate (i.e. the gradient) at that point. The derivative is not always constant in some "linear" cells.

Parameters

[in]	pointFieldValues	A list of field values for each point in the cell. This usually comes from a FieldInPoint argument in a vtkm::worklet::WorkletVisitCellsWithPoints.
[in]	worldCoordinateValues	A list of world coordinates for each point in the cell. This usually comes from a FieldInPoint argument in a vtkm::worklet::WorkletVisitCellsWithPoints where the coordinate system is passed into that argument.
[in]	parametricCoords	The parametric coordinates where you want to find the derivative.
[in]	shape	A tag of type CellShapeTag* to identify the shape of the cell. This method is overloaded for different shape types.
[out]	result	Value to store the derivative/gradient. Because the derivative is taken partially in the x, y, and z directions, the result is a vtkm::Vec of size 3 with the component type the same as the field. If the field is itself a vector, you get a Vec of Vecs.

CellInterpolate() [1/7]

template<typename FieldVecType , typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellInterpolate	(	const FieldVecType &	,
		const vtkm::Vec< ParametricCoordType, 3 > &	,
		vtkm::CellShapeTagEmpty	,
		typename FieldVecType::ComponentType &	result
	)

CellInterpolate() [2/7]

template<typename FieldVecType , typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellInterpolate	(	const FieldVecType &	field,
		const vtkm::Vec< ParametricCoordType, 3 > &	pcoords,
		vtkm::CellShapeTagPolygon	,
		typename FieldVecType::ComponentType &	result
	)

CellInterpolate() [3/7]

template<typename FieldVecType , typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellInterpolate	(	const FieldVecType &	field,
		const vtkm::Vec< ParametricCoordType, 3 > &	pcoords,
		vtkm::CellShapeTagPolyLine	,
		typename FieldVecType::ComponentType &	result
	)

CellInterpolate() [4/7]

template<typename FieldVecType , typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellInterpolate	(	const FieldVecType &	pointFieldValues,
		const vtkm::Vec< ParametricCoordType, 3 > &	parametricCoords,
		vtkm::CellShapeTagGeneric	shape,
		typename FieldVecType::ComponentType &	result
	)

Interpolate a point field in a cell.

Given the point field values for each node and the parametric coordinates of a point within the cell, interpolates the field to that point.

Parameters

[in]	pointFieldValues	A list of field values for each point in the cell. This usually comes from a FieldInPoint argument in a vtkm::worklet::WorkletVisitCellsWithPoints.
[in]	parametricCoords	The parametric coordinates where you want to get the interpolated field value for.
[in]	shape	A tag of type CellShapeTag* to identify the shape of the cell. This method is overloaded for different shape types.
[out]	result	Value to store the interpolated field.

CellInterpolate() [5/7]

template<typename FieldVecType , typename ParametricCoordType , typename CellShapeTag >

vtkm::ErrorCode vtkm::exec::CellInterpolate	(	const FieldVecType &	pointFieldValues,
		const vtkm::Vec< ParametricCoordType, 3 > &	pcoords,
		CellShapeTag	tag,
		typename FieldVecType::ComponentType &	result
	)

CellInterpolate() [6/7]

template<typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellInterpolate	(	const vtkm::VecAxisAlignedPointCoordinates< 2 > &	field,
		const vtkm::Vec< ParametricCoordType, 3 > &	pcoords,
		vtkm::CellShapeTagQuad	,
		vtkm::Vec3f &	result
	)

CellInterpolate() [7/7]

template<typename ParametricCoordType >

vtkm::ErrorCode vtkm::exec::CellInterpolate	(	const vtkm::VecAxisAlignedPointCoordinates< 3 > &	field,
		const vtkm::Vec< ParametricCoordType, 3 > &	pcoords,
		vtkm::CellShapeTagHexahedron	,
		vtkm::Vec3f &	result
	)

CellMeasure() [1/8]

template<typename OutType , typename PointCoordVecType , typename CellShapeType >

OutType vtkm::exec::CellMeasure	(	const vtkm::IdComponent &	numPts,
		const PointCoordVecType &	pts,
		CellShapeType	shape,
		vtkm::ErrorCode &
	)

By default, cells have zero measure unless this template is specialized below.

CellMeasure() [2/8]

template<typename OutType , typename PointCoordVecType >

OutType vtkm::exec::CellMeasure	(	const vtkm::IdComponent &	numPts,
		const PointCoordVecType &	pts,
		vtkm::CellShapeTagHexahedron	,
		vtkm::ErrorCode &	ec
	)

Compute the volume of a hexahedral cell (approximated via triple product of average edge along each parametric axis).

CellMeasure() [3/8]

template<typename OutType , typename PointCoordVecType >

OutType vtkm::exec::CellMeasure	(	const vtkm::IdComponent &	numPts,
		const PointCoordVecType &	pts,
		vtkm::CellShapeTagLine	,
		vtkm::ErrorCode &	ec
	)

Compute the arc length of a poly-line cell.

CellMeasure() [4/8]

template<typename OutType , typename PointCoordVecType >

OutType vtkm::exec::CellMeasure	(	const vtkm::IdComponent &	numPts,
		const PointCoordVecType &	pts,
		vtkm::CellShapeTagPyramid	,
		vtkm::ErrorCode &	ec
	)

Compute the volume of a pyramid (approximated as 2 tetrahedra)

CellMeasure() [5/8]

template<typename OutType , typename PointCoordVecType >

OutType vtkm::exec::CellMeasure	(	const vtkm::IdComponent &	numPts,
		const PointCoordVecType &	pts,
		vtkm::CellShapeTagQuad	,
		vtkm::ErrorCode &	ec
	)

Compute the area of a quadrilateral cell.

CellMeasure() [6/8]

template<typename OutType , typename PointCoordVecType >

OutType vtkm::exec::CellMeasure	(	const vtkm::IdComponent &	numPts,
		const PointCoordVecType &	pts,
		vtkm::CellShapeTagTetra	,
		vtkm::ErrorCode &	ec
	)

Compute the volume of a tetrahedron.

CellMeasure() [7/8]

template<typename OutType , typename PointCoordVecType >

OutType vtkm::exec::CellMeasure	(	const vtkm::IdComponent &	numPts,
		const PointCoordVecType &	pts,
		vtkm::CellShapeTagTriangle	,
		vtkm::ErrorCode &	ec
	)

Compute the area of a triangular cell.

CellMeasure() [8/8]

template<typename OutType , typename PointCoordVecType >

OutType vtkm::exec::CellMeasure	(	const vtkm::IdComponent &	numPts,
		const PointCoordVecType &	pts,
		vtkm::CellShapeTagWedge	,
		vtkm::ErrorCode &	ec
	)

Compute the volume of a wedge cell (approximated as 3 tetrahedra).

ComputeMeasure()

template<typename OutType , typename PointCoordVecType >

OutType vtkm::exec::ComputeMeasure	(	const vtkm::IdComponent &	,
		const PointCoordVecType &	,
		vtkm::CellShapeTagPolygon	,
		vtkm::ErrorCode &	ec
	)