/* RCSid: $Id: data.h,v 2.4 2003/02/22 02:07:28 greg Exp $ */
/*
 * Header for data file loading and computation routines.
 */

/* ====================================================================
 * The Radiance Software License, Version 1.0
 *
 * Copyright (c) 1990 - 2002 The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory.   All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *         notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *       the documentation and/or other materials provided with the
 *       distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *           if any, must include the following acknowledgment:
 *             "This product includes Radiance software
 *                 (http://radsite.lbl.gov/)
 *                 developed by the Lawrence Berkeley National Laboratory
 *               (http://www.lbl.gov/)."
 *       Alternately, this acknowledgment may appear in the software itself,
 *       if and wherever such third-party acknowledgments normally appear.
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 * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
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 * 5. Products derived from this software may not be called "Radiance",
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
 * information on Lawrence Berkeley National Laboratory, please see
 * <http://www.lbl.gov/>.
 */

#define  MAXDDIM	5		/* maximum data dimensions */

#define  DATATYPE	float		/* single precision to save space */
#define  DATATY		'f'		/* format for DATATYPE */

typedef struct datarray {
	char  *name;			/* name of our data */
	short  type;			/* DATATY, RED, GRN or BLU */
	short  nd;			/* number of dimensions */
	struct {
		DATATYPE  org, siz;		/* coordinate domain */
		int  ne;			/* number of elements */
		DATATYPE  *p;			/* point locations */
	} dim[MAXDDIM];			/* dimension specifications */
	union {
		DATATYPE  *d;			/* float data */
		COLR  *c;			/* RGB data */
	}  arr;				/* the data */
	struct datarray  *next;		/* next array in list */
} DATARRAY;			/* a data array */

#ifdef NOPROTO

extern DATARRAY	*getdata();
extern DATARRAY	*getpict();
extern void	freedata();
extern double	datavalue();

#else

extern DATARRAY	*getdata(char *dname);
extern DATARRAY	*getpict(char *pname);
extern void	freedata(DATARRAY *dta);
extern double	datavalue(DATARRAY *dp, double *pt);

#endif