Template Class Grid¶

Defined in File Grid.h

Inheritance Relationships¶

Base Type¶

public Referenced (Class Referenced)

Derived Types¶

public ScalarGrid (Class ScalarGrid)
public VectorGrid (Class VectorGrid)

Class Documentation¶

template <typename T> class Grid : public Referenced ¶

Template class for fields on a periodic grid with trilinear interpolation.

The grid spacing is constant with diffrent resulution along all three axes. Values are calculated by trilinear interpolation of the surrounding 8 grid points. The grid is periodically (default) or reflectively extended. The grid sample positions are at 1/2 * size/N, 3/2 * size/N … (2N-1)/2 * size/N.

Subclassed by ScalarGrid, VectorGrid

Public Functions

Grid(Vector3d origin, size_t N, double spacing)¶

Constructor for cubic grid

Parameters

origin: Position of the lower left front corner of the volume
N: Number of grid points in one direction
spacing: Spacing between grid points

Grid(Vector3d origin, size_t Nx, size_t Ny, size_t Nz, double spacing)¶

Constructor for non-cubic grid

Parameters

origin: Position of the lower left front corner of the volume
Nx: Number of grid points in x-direction
Ny: Number of grid points in y-direction
Nz: Number of grid points in z-direction
spacing: Spacing between grid points

Grid(Vector3d origin, size_t Nx, size_t Ny, size_t Nz, Vector3d spacing)¶

Constructor for non-cubic grid with spacing vector

Parameters

origin: Position of the lower left front corner of the volume
Nx: Number of grid points in x-direction
Ny: Number of grid points in y-direction
Nz: Number of grid points in z-direction
spacing: Spacing vector between grid points

void setOrigin(Vector3d origin)¶

void setGridSize(size_t Nx, size_t Ny, size_t Nz)¶: Resize grid, also enlarges the volume as the spacing stays constant

void setSpacing(Vector3d spacing)¶

void setReflective(bool b)¶

Vector3d getOrigin() const

size_t getNx() const¶

size_t getNy() const¶

size_t getNz() const¶

size_t getSizeOf() const¶: Calculates the total size of the grid in bytes

Vector3d getSpacing() const¶

bool isReflective() const¶

T &get(size_t ix, size_t iy, size_t iz)¶: Inspector & Mutator

const T &get(size_t ix, size_t iy, size_t iz) const¶: Inspector

T getValue(size_t ix, size_t iy, size_t iz)¶

void setValue(size_t ix, size_t iy, size_t iz, T value)¶

std::vector<T> &getGrid()¶: Return a reference to the grid values

Vector3d positionFromIndex(int index) const¶: Position of the grid point of a given index

T closestValue(const Vector3d &position) const¶: Value of a grid point that is closest to a given position

T interpolate(const Vector3d &position) const¶: Interpolate the grid at a given position

size_t addReference() const

size_t removeReference() const

int removeReferenceNoDelete() const

size_t getReferenceCount() const

Protected Attributes

size_t _referenceCount