Opm::WachspressCoord Class Reference

Class capable of computing Wachspress coordinates in 2d and 3d. More...

#include <WachspressCoord.hpp>

Classes
struct	CornerInfo

Public Member Functions
	WachspressCoord (const UnstructuredGrid &grid)
	Constructor.
int	numCorners (const int cell) const
	Count of vertices adjacent to a call.
void	cartToBary (const int cell, const double *x, double *xb) const
	Compute generalized barycentric coordinates for some point x with respect to the vertices of a grid cell.
const SparseTable< CornerInfo > &	cornerInfo () const
	The class stores some info for each corner, made accessible for user convenience.
const std::vector< int > &	adjacentFaces () const
	The class stores adjacent faces for each corner, made accessible for user convenience.

Detailed Description

Class capable of computing Wachspress coordinates in 2d and 3d.

The formula used is a modification of the formula given in: M. Meyer, A. Barr, H. Lee, and M. Desbrun. Generalized barycentric coordinates on irregular poly- gons. Journal of Graphics Tools, 7(1):13–22, 2002.

Constructor & Destructor Documentation

WachspressCoord()

Opm::WachspressCoord::WachspressCoord ( const UnstructuredGrid & grid )

explicit

Constructor.

prod_{all j} n_j * (c_j - x), resulting in the formula:

Parameters

[in]

grid

A grid.

Constructor.

Parameters

[in]

grid

A grid.

Member Function Documentation

adjacentFaces()

const std::vector< int > & Opm::WachspressCoord::adjacentFaces

(

)

const

The class stores adjacent faces for each corner, made accessible for user convenience.

The class stores some info for each corner.

Returns

The vector of adjacent faces. Size = dim * #corners.

The corner info container.

cartToBary()

void Opm::WachspressCoord::cartToBary	(	const int	cell,
		const double *	x,
		double *	xb ) const

Compute generalized barycentric coordinates for some point x with respect to the vertices of a grid cell.

Parameters

[in]	cell	Cell in which to compute coordinates.
[in]	x	Coordinates of point in cartesian coordinates. Must be array of length grid.dimensions.
[out]	xb	Coordinates of point in barycentric coordinates. Must be array of length numCorners(cell).

cornerInfo()

const SparseTable< WachspressCoord::CornerInfo > & Opm::WachspressCoord::cornerInfo

(

)

const

The class stores some info for each corner, made accessible for user convenience.

The class stores some info for each corner.

Returns

The corner info container.

numCorners()

int Opm::WachspressCoord::numCorners

(

const int

cell

)

const

Count of vertices adjacent to a call.

Parameters

[in]

cell

A cell index.

Returns

Number of corners of cell.

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

• opm/grid/utility/WachspressCoord.hpp
• opm/grid/utility/WachspressCoord.cpp