#include <LayeredGrid.h>

Inheritance diagram for VAPoR::LayeredGrid:

Public Member Functions
	LayeredGrid (const size_t bs[3], const size_t min[3], const size_t max[3], const double extents[6], const bool periodic[3], float blks, float coords, int varying_dim)

	LayeredGrid (const size_t bs[3], const size_t min[3], const size_t max[3], const double extents[6], const bool periodic[3], float blks, float coords, int varying_dim, float missing_value)

virtual	~LayeredGrid ()

float	GetValue (double x, double y, double z) const

virtual void	GetUserExtents (double extents[6]) const

virtual void	GetBoundingBox (const size_t min[3], const size_t max[3], double extents[6]) const

virtual void	GetEnclosingRegion (const double minu[3], const double maxu[3], size_t min[3], size_t max[3]) const

int	GetUserCoordinates (size_t i, size_t j, size_t k, double x, double y, double *z) const

void	GetIJKIndex (double x, double y, double z, size_t i, size_t j, size_t *k) const

void	GetIJKIndexFloor (double x, double y, double z, size_t i, size_t j, size_t *k) const

int	Reshape (const size_t min[3], const size_t max[3], const bool periodic[3])

bool	InsideGrid (double x, double y, double z) const

virtual void	SetPeriodic (const bool periodic[3])

virtual void	GetMinCellExtents (double x, double y, double *z) const

float **	GetCoordBlks () const

Public Member Functions inherited from VAPoR::RegularGrid
	RegularGrid (const size_t bs[3], const size_t min[3], const size_t max[3], const double extents[6], const bool periodic[3], float **blks)

	RegularGrid (const size_t bs[3], const size_t min[3], const size_t max[3], const double extents[6], const bool periodic[3], float **blks, float missing_value)

virtual	~RegularGrid ()

float &	AccessIJK (size_t i, size_t j, size_t k) const

virtual void	GetBoundingBox (const std::vector< size_t > &min, const std::vector< size_t > &max, std::vector< double > &minu, std::vector< double > &maxu) const

virtual void	GetIJKMinMax (size_t min[3], size_t max[3]) const

virtual void	GetIJKOrigin (size_t min[3]) const

void	GetDimensions (size_t dims[3]) const

float	GetMissingValue () const

void	SetMissingValue (float missing_value)

bool	HasMissingData () const

virtual int	GetInterpolationOrder () const

virtual void	SetInterpolationOrder (int order)

void	getBilinearWeights (double x, double y, double z, double &iwgt, double &jwgt) const

double	bilinearElevation (size_t i0, size_t i1, size_t j0, size_t j1, size_t k0, double iwgt, double jwgt) const

double	bilinearInterpolation (size_t i0, size_t i1, size_t j0, size_t j1, size_t k0, double iwgt, double jwgt) const

double	quadraticInterpolation (double x, double y, double z) const

double	verticalLinearInterpolation (double x, double y, double z) const

virtual void	GetRange (float range[2]) const

virtual void	HasPeriodic (bool idim, bool jdim, bool *kdim) const

void	GetBlockSize (size_t bs[3]) const

virtual int	GetRank ()

float **	GetBlks () const

size_t	GetNumBlks () const

float	Next ()

void	ResetItr ()

Iterator	begin ()

Iterator	end ()

ConstIterator	begin () const

ConstIterator	end () const

Additional Inherited Members
Protected Member Functions inherited from VAPoR::RegularGrid
float &	_AccessIJK (float **blks, size_t i, size_t j, size_t k) const

void	_ClampCoord (double &x, double &y, double &z) const

void	_SetExtents (const double extents[6])

Protected Attributes inherited from VAPoR::RegularGrid
size_t	_min [3]

size_t	_max [3]

Detailed Description

Definition at line 25 of file LayeredGrid.h.

Constructor & Destructor Documentation

VAPoR::LayeredGrid::LayeredGrid	(	const size_t	bs[3],
		const size_t	min[3],
		const size_t	max[3],
		const double	extents[6],
		const bool	periodic[3],
		float **	blks,
		float **	coords,
		int	varying_dim
	)

Construct a layered grid sampling a 3D or 2D scalar function

Parameters

[in]	bs	A three-element vector specifying the dimensions of each block storing the sampled scalar function.
[in]	min	A three-element vector specifying the ijk index of the first point in the grid. The first grid point need not coincide with block boundaries. I.e. the indecies need not be (0,0,0)
[in]	max	A three-element vector specifying the ijk index of the last point in the grid
[in]	extents	A six-element vector specifying the user coordinates of the first (first three elements) and last (last three elements) of the grid points indicated by `min` and `max`, respectively. The elements of the `extents` parameter corresponding to the varying dimension are ignored. The varying dimension extents are provided by the `coords` parameter.
[in]	periodic	A three-element boolean vector indicating which i,j,k indecies, respectively, are periodic. The varying dimension may not be periodic.
[in]	blks	An array of blocks containing the sampled function. The dimensions of each block is given by `bs`. The number of blocks is given by the product of the terms:

(max[i]/bs[i] - min[i]/bs[i] + 1)

over i = 0..2.

Parameters

[in]	coords	An array of blocks with dimension and number the same as `blks` specifying the varying dimension grid point coordinates.
[in]	varying_dim	An enumerant indicating which axis is the varying dimension: 0 for I, 1 for J, 2 for K

VAPoR::LayeredGrid::LayeredGrid	(	const size_t	bs[3],
		const size_t	min[3],
		const size_t	max[3],
		const double	extents[6],
		const bool	periodic[3],
		float **	blks,
		float **	coords,
		int	varying_dim,
		float	missing_value
	)

Construct a layered grid sampling a 3D or 2D scalar function that contains missing values.

This constructor adds a parameter, missing_value, that specifies the value of missing values in the sampled function. When reconstructing the function at arbitrary coordinates special consideration is given to grid points with missing values that are used in the reconstruction.

See also: GetValue()

virtual VAPoR::LayeredGrid::~LayeredGrid ( )

virtual

Member Function Documentation

virtual void VAPoR::LayeredGrid::GetBoundingBox	(	const size_t	min[3],
		const size_t	max[3],
		double	extents[6]
	)		const

virtual

Return the extents of the axis-aligned bounding box enclosign a region

This method returns min and max extents, in user coordinates, of the smallest axis-aligned box enclosing the region defined by the corner grid points, min and max.

Note: The results are undefined if any coordinate of min is greater than the coresponding coordinate of max.

Parameters

[out] extents A six-element array, the first three values will contain the minimum coordinate, and the last three values the maximum coordinate

See also: GetDimensions(), RegularGrid()

Reimplemented from VAPoR::RegularGrid.

float** VAPoR::LayeredGrid::GetCoordBlks ( ) const

inline

Return the internal data structure containing a copy of the coordinate blocks passed in by the constructor

Definition at line 180 of file LayeredGrid.h.

virtual void VAPoR::LayeredGrid::GetEnclosingRegion	(	const double	minu[3],
		const double	maxu[3],
		size_t	min[3],
		size_t	max[3]
	)		const

virtual

Get voxel coordinates of grid containing a region

Calculates the starting and ending IJK voxel coordinates of the smallest grid completely containing the rectangular region defined by the user coordinates minu and maxu If rectangluar region defined by minu and maxu can not be contained the minimum and maximum IJK coordinates are returned in min and max, respectively

Parameters

[in]	minu	User coordinates of minimum coorner
[in]	maxu	User coordinates of maximum coorner
[out]	min	Integer coordinates of minimum coorner
[out]	max	Integer coordinates of maximum coorner

Reimplemented from VAPoR::RegularGrid.

void VAPoR::LayeredGrid::GetIJKIndex	(	double	x,
		double	y,
		double	z,
		size_t *	i,
		size_t *	j,
		size_t *	k
	)		const

virtual

Return the closest grid point to the specified user coordinates

This method returns the ijk index of the grid point closest to the specified user coordinates based on Euclidean distance. If any of the input coordinates correspond to periodic dimensions the the coordinate(s) are first re-mapped to lie inside the grid extents as returned by GetUserExtents()

Parameters

[in]	x	coordinate along fastest varying dimension
[in]	y	coordinate along second fastest varying dimension
[in]	z	coordinate along third fastest varying dimension
[out]	i	index of grid point along fastest varying dimension
[out]	j	index of grid point along second fastest varying dimension
[out]	k	index of grid point along third fastest varying dimension

Reimplemented from VAPoR::RegularGrid.

void VAPoR::LayeredGrid::GetIJKIndexFloor	(	double	x,
		double	y,
		double	z,
		size_t *	i,
		size_t *	j,
		size_t *	k
	)		const

virtual

Return the corner grid point of the cell containing the specified user coordinates

This method returns the smallest ijk index of the grid point of associated with the cell containing the specified user coordinates. If any of the input coordinates correspond to periodic dimensions the the coordinate(s) are first re-mapped to lie inside the grid extents as returned by GetUserExtents()

If the specified coordinates lie outside of the grid (are not contained by any cell) the lowest valued ijk index of the grid points defining the boundary cell closest to the point are returned.

Parameters

[in]	x	coordinate along fastest varying dimension
[in]	y	coordinate along second fastest varying dimension
[in]	z	coordinate along third fastest varying dimension
[out]	i	index of grid point along fastest varying dimension
[out]	j	index of grid point along second fastest varying dimension
[out]	k	index of grid point along third fastest varying dimension

Reimplemented from VAPoR::RegularGrid.

virtual void VAPoR::LayeredGrid::GetMinCellExtents	(	double *	x,
		double *	y,
		double *	z
	)		const

virtual

Return the minimum grid spacing between all grid points

This method returns the minimum distance, in user coordinates, between adjacent grid points for all cells in the grid.

Parameters

[out]	x	Minimum distance between grid points along X axis
[out]	y	Minimum distance between grid points along Y axis
[out]	z	Minimum distance between grid points along Z axis

Note: For a regular grid all cells have the same dimensions

Reimplemented from VAPoR::RegularGrid.

int VAPoR::LayeredGrid::GetUserCoordinates	(	size_t	i,
		size_t	j,
		size_t	k,
		double *	x,
		double *	y,
		double *	z
	)		const

virtual

Return the user coordinates of a grid point

This method returns the user coordinates of the grid point specified by index(i,j,k)

Parameters

[in]	i	index of grid point along fastest varying dimension
[in]	j	index of grid point along second fastest varying dimension
[in]	k	index of grid point along third fastest varying dimension
[out]	x	coordinate of grid point along fastest varying dimension
[out]	y	coordinate of grid point along second fastest varying dimension
[out]	z	coordinate of grid point along third fastest varying dimension

Return values

status A negative int is returned if index(i,j,k) is out out of bounds

Reimplemented from VAPoR::RegularGrid.

virtual void VAPoR::LayeredGrid::GetUserExtents ( double extents[6] ) const

inlinevirtual

Return the extents of the user coordinate system

This method returns min and max extents of the user coordinate system defined on the grid. The minimum extent is the coordinate of the grid point with index(0,0,0). The maximum extent is the coordinate of the grid point with index(nx-1, ny-1, nz-1), where nx, ny, and nz are the I, J, K dimensions, respectively.

Parameters

[out] extents A six-element array, the first three values will contain the minimum coordinate, and the last three values the maximum coordinate

See also: GetDimensions(), RegularGrid()

Reimplemented from VAPoR::RegularGrid.

Definition at line 106 of file LayeredGrid.h.

float VAPoR::LayeredGrid::GetValue	(	double	x,
		double	y,
		double	z
	)		const

virtual

Get the reconstructed value of the sampled scalar function

This method reconstructs the scalar field at an arbitrary point in space. If the point's coordinates are outside of the grid's coordinate extents as returned by GetUserExtents(), and the grid is not periodic along the out-of-bounds axis, the value returned will be the missing_value.

If the value of any of the grid point samples used in the reconstruction is the missing_value then the result returned is the missing_value.

The reconstruction method used is determined by interpolation order returned by GetInterpolationOrder()

Parameters

[in]	x	coordinate along fastest varying dimension
[in]	y	coordinate along second fastest varying dimension
[in]	z	coordinate along third fastest varying dimension

See also: GetInterpolationOrder(), HasPeriodic(), GetMissingValue(); GetUserExtents()

Reimplemented from VAPoR::RegularGrid.

bool VAPoR::LayeredGrid::InsideGrid	(	double	x,
		double	y,
		double	z
	)		const

virtual

Return true if the specified point lies inside the grid

This method can be used to determine if a point expressed in user coordinates reside inside or outside the grid

Parameters

[in]	x	coordinate along fastest varying dimension
[in]	y	coordinate along second fastest varying dimension
[in]	z	coordinate along third fastest varying dimension

Return values

bool	True if point is inside the grid

Reimplemented from VAPoR::RegularGrid.

int VAPoR::LayeredGrid::Reshape	(	const size_t	min[3],
		const size_t	max[3],
		const bool	periodic[3]
	)

virtual

Change the voxel exents specified by the constructor

This method permits the grid to be reshaped under the constraints that: 1) the number of blocks does not change, and 2) the grid can only get smaller, not larger. I.e. min can only increase and max can only decrease.

Parameters

[in]	min	A three-element vector specifying the ijk index of the first point in the grid. The first grid point need not coincide with block boundaries. I.e. the indecies need not be (0,0,0): the first grid point is not required to be the first element of the array
[in]	max	A three-element vector specifying the ijk index of the last point in the grid.
[in]	periodic	A three-element boolean vector indicating which i,j,k indecies, respectively, are periodic

Reimplemented from VAPoR::RegularGrid.

virtual void VAPoR::LayeredGrid::SetPeriodic ( const bool periodic[3] )

virtual

Set periodic boundaries

This method changes the periodicity of boundaries set by the class constructor. It overides the base class method to ensure the varying dimension is not periodic.

Parameters

[in] periodic A three-element boolean vector indicating which i,j,k indecies, respectively, are periodic. The varying dimension may not be periodic.

Reimplemented from VAPoR::RegularGrid.

The documentation for this class was generated from the following file:

/Users/clyne/src/vapor/lib/vdf/LayeredGrid.h

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation