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/* RCSid $Id: data.h,v 2.9 2024/03/12 16:54:51 greg Exp $ */
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/*
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* Header for data file loading and computation routines.
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*/
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#ifndef _RAD_DATA_H_
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#define _RAD_DATA_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define MAXDDIM 6 /* maximum data dimensions */
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#define DATATYPE float /* single precision to save space */
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#define DATATY 'f' /* format for DATATYPE */
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#define SPECTY 'c' /* format for SCOLR */
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typedef struct datarray {
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struct datarray *next; /* next array in list */
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char *name; /* name of our data */
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short type; /* DATATY, SPECTY, RED, GRN or BLU */
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short nd; /* number of dimensions */
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union {
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DATATYPE *d; /* float data */
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COLR *c; /* RGBE data */
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uby8 *s; /* spectral data */
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void *p; /* generic pointer */
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} arr; /* the data */
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struct dadim { /* put this last */
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DATATYPE *p; /* point locations */
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DATATYPE org, siz; /* coordinate domain */
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int ne; /* number of elements */
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} dim[MAXDDIM]; /* dimension specifications */
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} DATARRAY; /* a data array */
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extern DATARRAY *getdata(char *dname);
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extern DATARRAY *getpict(char *pname);
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extern DATARRAY *getspec(char *sname);
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extern void freedata(DATARRAY *dta);
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extern double datavalue(DATARRAY *dp, double *pt);
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/* release datavector() pointer with free() not freedata() */
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extern DATARRAY *datavector(DATARRAY *dp, double *pt);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _RAD_DATA_H_ */
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