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Meshing::AreaGridTemplate< T > Class Template Reference
Meshing

A 2D array over an axis-aligned 2D box, containing Real values. More...

#include <AreaGrid.h>

Public Types

typedef AreaGridTemplate< T > MyT
 
typedef AreaGridIterator< T > iterator
 

Public Member Functions

bool IsEmpty () const
 
void Resize (int m, int n)
 
void ResizeByResolution (const Vector2 &res)
 
template<class T2 >
void MakeSimilar (const AreaGridTemplate< T2 > &grid)
 
template<class T2 >
bool IsSimilar (const AreaGridTemplate< T2 > &grid) const
 
void GetCell (int i, int j, AABB2D &cell) const
 
void GetCellCenter (int i, int j, Vector2 &center) const
 
Vector2 GetCellSize () const
 
void GetIndex (const Vector2 &pt, int &i, int &j) const
 
void GetIndexAndParams (const Vector2 &pt, IntPair &index, Vector2 &params) const
 
void GetIndexRange (const AABB2D &range, IntPair &imin, IntPair &imax) const
 
void GetCell (const IntPair &index, AABB2D &cell) const
 
void GetCenter (const IntPair &index, Vector2 &center) const
 
void GetIndex (const Vector2 &pt, IntPair &index) const
 
void SetValue (int i, int j, const T &v)
 
void SetValue (const Vector2 &pt, const T &v)
 
T GetValue (int i, int j) const
 
T GetValue (const Vector2 &pt) const
 
T BilinearInterpolate (const Vector2 &pt) const
 Computes the trilinear interpolation of the field at pt, assuming values are sampled exactly at cell centers.
 
T Average (const AABB2D &range) const
 Average value of the range. Each cell's value is weighted by the volume overlap with range.
 
void ResampleBilinear (const MyT &grid)
 Resamples the given volume grid onto the current grid, taking trilinear interpolation at cell centers.
 
void ResampleAverage (const MyT &grid)
 Resamples the given volume grid onto the current grid, taking averages over grid cells.
 
void Gradient_ForwardDifference (const IntPair &index, Vector2 &grad) const
 Returns the gradient estimated using forward differencing.
 
void Gradient_CenteredDifference (const IntPair &index, Vector2 &grad) const
 Returns the gradient estimated using centered differencing.
 
void Gradient (const Vector2 &pt, Vector2 &grad) const
 
void Add (const MyT &grid)
 
void Subtract (const MyT &grid)
 
void Multiply (const MyT &grid)
 
void Max (const MyT &grid)
 
void Min (const MyT &grid)
 
void Add (T val)
 
void Multiply (T val)
 
void Max (T val)
 
void Min (T val)
 
iterator getIterator () const
 

Public Attributes

Array2D< T > value
 
AABB2D bb
 

Detailed Description

template<class T>
class Meshing::AreaGridTemplate< T >

A 2D array over an axis-aligned 2D box, containing Real values.

GetIndex returns the cell containing a 2D point. GetIndexAndParams returns the cell containing a 2D point, and its coordinates within that cell.

Cells can be quickly iterated over using the iterator class.

Values are interpreted so they are defined over an entire cell, not the vertices.

Most methods just clamp their arguments to the domain rather than doing bounds checks.

Member Function Documentation

template<class T >
void Meshing::AreaGridTemplate< T >::Gradient ( const Vector2 &  pt,
Vector2 &  grad 
) const

Returns the trilinear interpolated gradient. If any element of pt is on a cell boundary the gradient estimated using centered differencing

NOTE: THIS CALCULATION IS SUSPECT

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