SCellGrid

The SCellGrid represents the grid on which the simulation is taking place. QHG supports flat grids with 4 or 6 neighborhoods, as well as icosahedral grids.

It is also possible to use irregular grids - in principle any graph could be used.

../../images/some_grids.png

QDF files containing regular cell grids can be created with the tool Def2QDF.

Code:
SCellGrid.h
SCellGrid.cpp

Public Members

int         m_iID;

The cell grid’s ID

uint        m_iNumCells;

The number of cells in the grid.

SCell       *m_aCells;

The array of SCell objects.

int       m_iType;

The type of the grid: cartesian with 4-neighborhood (0), cartesian with 6-neighborhood (1, subdivided icosahedron(3).

int       m_iConnectivity;

The grid’s connectivity (4 or 6).

Public Methods

constructor

SCellGrid(int iID, uint iNumCells, const stringmap &smSurfaceData);
iID

ID of grid (currently nor relevant - might be used for MPI parallelization).

iNumCells

Number of cells in grid.

smSurfaceData

String data (name=>value).

Allocates the array of SCell objects, stores ID and surface data.

This constructor is only used to prepare the array of cells for later input. In QHG the GridGroupReader reads the relevant data as well as the SCells and their neighorhood relations gfrom a QDF file.

destructor

~SCellGrid();

The destructor deletes the array of SCell objects.

setGeography

void setGeography(Geography* pGeo);

Sets the Geography object.

setClimate

void setClimate(Climate* pClim);

Sets the Climate object.

setVegetation

void setVegetation(Vegetation* pVeg);

Sets the Vegetation* object.

setNavigation

void setNavigation(Navigation* pNav);

Sets the Navigation object.

isCartesian

bool isCartesian();

Returns true if the grid is not icosahedral.