Document public interface of cpg-processing module.

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Bård Skaflestad 2012-07-18 11:22:43 +02:00
parent 426cb97003
commit 642eaf6c29

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#ifndef OPENRS_PREPROCESS_HEADER
#define OPENRS_PREPROCESS_HEADER
/**
* \file
* Low-level corner-point processing routines and supporting data structures.
*
* User code should typically employ higher-level routines such as
* create_grid_cornerpoint() in order to construct fully formed UnstructuredGrid
* data structures from a corner-point specification. Incidentally, the routines
* provided by this module are used to implement function
* create_grid_cornerpoint().
*/
#ifdef __cplusplus
extern "C" {
#endif
/* Input structure holding raw cornerpoint spec. */
/**
* Raw corner-point specification of a particular geological model.
*/
struct grdecl {
int dims[3];
const double *coord;
const double *zcorn;
const int *actnum;
int dims[3]; /**< Cartesian box dimensions. */
const double *coord; /**< Pillar end-points. */
const double *zcorn; /**< Explicit "active" map. May be NULL.*/
const int *actnum; /**< Corner-point depths. */
};
/* Constant: I J K */
enum face_tag { LEFT, BACK, TOP };
/**
* Connection taxonomy.
*/
enum face_tag {
LEFT, /**< Connection topologically parallel to J-K plane. */
BACK, /**< Connection topologically parallel to I-K plane. */
TOP /**< Connection topologically parallel to I-J plane. */
};
/* Output structure holding grid topology */
/**
* Result structure representing minimal derived topology and geometry of
* a geological model in corner-point format.
*/
struct processed_grid {
int m; /** Upper bound on "number_of_faces" */
int n; /** Upper bound on "number_of_nodes" */
int dimensions[3]; /* Cartesian dimension */
int number_of_faces;
int *face_nodes; /* Nodes numbers of each face sequentially. */
int *face_ptr; /* Start position for each face in face_nodes. */
int *face_neighbors; /* Global cell numbers. 2 ints per face sequentially */
enum face_tag *face_tag;
int m; /**< Upper bound on "number_of_faces". For internal use in
function process_grid()'s memory management. */
int n; /**< Upper bound on "number_of_nodes". For internal use in
function process_grid()'s memory management. */
int number_of_nodes;
int number_of_nodes_on_pillars; /** Total number of unique cell vertices that lie on pillars. */
double *node_coordinates; /* 3 doubles per node, sequentially */
int dimensions[3]; /**< Cartesian box dimensions. */
int number_of_cells; /* number of active cells */
int *local_cell_index; /* Global to local map */
int number_of_faces; /**< Total number of unique grid faces
(i.e., connections). */
int *face_nodes; /**< Node (vertex) numbers of each face,
stored sequentially. */
int *face_ptr; /**< Start position for each face's
`face_nodes'. */
int *face_neighbors; /**< Global cell numbers. Two elements per
face, stored sequentially. */
enum face_tag *face_tag; /**< Classification of grid's individual
connections (faces). */
int number_of_nodes; /**< Number of unique grid vertices. */
int number_of_nodes_on_pillars; /**< Total number of unique cell
vertices that lie on pillars. */
double *node_coordinates; /**< Vertex coordinates. Three doubles
(\f$x\f$, \f$y\f$, \f$z\f$) per vertex,
stored sequentially. */
int number_of_cells; /**< Number of active grid cells. */
int *local_cell_index; /**< Deceptively named local-to-global cell
index mapping. */
};
/**
* Construct a prototypical grid representation from a corner-point
* specification.
*
* Pinched cells will be removed irrespective of any explicit "active" map
* in the geological model input specification. On input, the result
* structure "out" must point to a valid management structure. In other
* words, the result structure must point to a region of memory that is
* typically backed by automatic or allocated (dynamic) storage duration.
*
* @param[in] g Corner-point specification. If "actnum" is NULL, then
* the specification is interpreted as if all cells are
* initially active.
* @param[in] tol Absolute tolerance of node-coincidence.
* @param[in,out] out Minimal grid representation featuring face-to-cell
* neighbourship definition, vertex geometry, face's
* constituent vertices, and local-to-global cell
* mapping.
*/
void process_grdecl(const struct grdecl *g ,
double tol,
struct processed_grid *out);
void free_processed_grid(struct processed_grid *g);
/**
* Release memory resources acquired in previous grid processing using
* function process_grdecl().
*
* Note: This function releases the resources associated to the individual
* fields of the processed_grid, but does not free() the structure itself.
*
* @param[in,out] g Prototypical grid representation obtained in an earlier
* call to function process_grdecl().
*/
void free_processed_grid(struct processed_grid *g);
#ifdef __cplusplus
}
#endif