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/* RCSid $Id$ */
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/*
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* Header for data file loading and computation routines.
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*/
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#include "copyright.h"
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#define MAXDDIM 5 /* 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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typedef struct datarray {
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char *name; /* name of our data */
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short type; /* DATATY, RED, GRN or BLU */
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short nd; /* number of dimensions */
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struct {
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DATATYPE org, siz; /* coordinate domain */
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int ne; /* number of elements */
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DATATYPE *p; /* point locations */
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} dim[MAXDDIM]; /* dimension specifications */
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union {
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DATATYPE *d; /* float data */
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COLR *c; /* RGB data */
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} arr; /* the data */
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struct datarray *next; /* next array in list */
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} DATARRAY; /* a data array */
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#ifdef NOPROTO
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extern DATARRAY *getdata();
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extern DATARRAY *getpict();
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extern void freedata();
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extern double datavalue();
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#else
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extern DATARRAY *getdata(char *dname);
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extern DATARRAY *getpict(char *pname);
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extern void freedata(DATARRAY *dta);
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extern double datavalue(DATARRAY *dp, double *pt);
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#endif
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