src/common/resolu.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 * Read and write image resolutions.
 *
 * Externals declared in resolu.h
 */

/* ====================================================================
 * 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.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       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.
 *
 * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
 *       and "The Regents of the University of California" must
 *       not be used to endorse or promote products derived from this
 *       software without prior written permission. For written
 *       permission, please contact [email protected].
 *
 * 5. Products derived from this software may not be called "Radiance",
 *       nor may "Radiance" appear in their name, without prior written
 *       permission of Lawrence Berkeley National Laboratory.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * 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/>.
 */

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#include "resolu.h"


char  resolu_buf[RESOLU_BUFLEN];        /* resolution line buffer */


void
fputresolu(ord, sl, ns, fp)             /* put out picture dimensions */
int  ord;                       /* scanline ordering */
int  sl, ns;                    /* scanline length and number */
FILE  *fp;
{
        RESOLU  rs;

        if ((rs.rt = ord) & YMAJOR) {
                rs.xr = sl;
                rs.yr = ns;
        } else {
                rs.xr = ns;
                rs.yr = sl;
        }
        fputsresolu(&rs, fp);
}


int
fgetresolu(sl, ns, fp)                  /* get picture dimensions */
int  *sl, *ns;                  /* scanline length and number */
FILE  *fp;
{
        RESOLU  rs;

        if (!fgetsresolu(&rs, fp))
                return(-1);
        if (rs.rt & YMAJOR) {
                *sl = rs.xr;
                *ns = rs.yr;
        } else {
                *sl = rs.yr;
                *ns = rs.xr;
        }
        return(rs.rt);
}


char *
resolu2str(buf, rp)             /* convert resolution struct to line */
char  *buf;
register RESOLU  *rp;
{
        if (rp->rt&YMAJOR)
                sprintf(buf, "%cY %d %cX %d\n",
                                rp->rt&YDECR ? '-' : '+', rp->yr,
                                rp->rt&XDECR ? '-' : '+', rp->xr);
        else
                sprintf(buf, "%cX %d %cY %d\n",
                                rp->rt&XDECR ? '-' : '+', rp->xr,
                                rp->rt&YDECR ? '-' : '+', rp->yr);
        return(buf);
}


int
str2resolu(rp, buf)             /* convert resolution line to struct */
register RESOLU  *rp;
char  *buf;
{
        register char  *xndx, *yndx;
        register char  *cp;

        if (buf == NULL)
                return(0);
        xndx = yndx = NULL;
        for (cp = buf; *cp; cp++)
                if (*cp == 'X')
                        xndx = cp;
                else if (*cp == 'Y')
                        yndx = cp;
        if (xndx == NULL || yndx == NULL)
                return(0);
        rp->rt = 0;
        if (xndx > yndx) rp->rt |= YMAJOR;
        if (xndx[-1] == '-') rp->rt |= XDECR;
        if (yndx[-1] == '-') rp->rt |= YDECR;
        if ((rp->xr = atoi(xndx+1)) <= 0)
                return(0);
        if ((rp->yr = atoi(yndx+1)) <= 0)
                return(0);
        return(1);
}
Revision:	2.3
Committed:	Sat Feb 22 02:07:22 2003 UTC (21 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.2:	+76 -16 lines
Log Message:	Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id$";
3	#endif
4	/*
5	* Read and write image resolutions.
6	*
7	* Externals declared in resolu.h
8	*/
9
10	/* ====================================================================
11	* The Radiance Software License, Version 1.0
12	*
13	* Copyright (c) 1990 - 2002 The Regents of the University of California,
14	* through Lawrence Berkeley National Laboratory. All rights reserved.
15	*
16	* Redistribution and use in source and binary forms, with or without
17	* modification, are permitted provided that the following conditions
18	* are met:
19	*
20	* 1. Redistributions of source code must retain the above copyright
21	* notice, this list of conditions and the following disclaimer.
22	*
23	* 2. Redistributions in binary form must reproduce the above copyright
24	* notice, this list of conditions and the following disclaimer in
25	* the documentation and/or other materials provided with the
26	* distribution.
27	*
28	* 3. The end-user documentation included with the redistribution,
29	* if any, must include the following acknowledgment:
30	* "This product includes Radiance software
31	* (http://radsite.lbl.gov/)
32	* developed by the Lawrence Berkeley National Laboratory
33	* (http://www.lbl.gov/)."
34	* Alternately, this acknowledgment may appear in the software itself,
35	* if and wherever such third-party acknowledgments normally appear.
36	*
37	* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
38	* and "The Regents of the University of California" must
39	* not be used to endorse or promote products derived from this
40	* software without prior written permission. For written
41	* permission, please contact [email protected].
42	*
43	* 5. Products derived from this software may not be called "Radiance",
44	* nor may "Radiance" appear in their name, without prior written
45	* permission of Lawrence Berkeley National Laboratory.
46	*
47	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
48	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
50	* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
51	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
53	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
54	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
55	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
56	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
57	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58	* SUCH DAMAGE.
59	* ====================================================================
60	*
61	* This software consists of voluntary contributions made by many
62	* individuals on behalf of Lawrence Berkeley National Laboratory. For more
63	* information on Lawrence Berkeley National Laboratory, please see
64	* <http://www.lbl.gov/>.
65	*/
66
67	#include <stdio.h>
68	#include <stdlib.h>
69	#include <time.h>
70
71	#include "resolu.h"
72
73
74	char resolu_buf[RESOLU_BUFLEN]; /* resolution line buffer */
75
76
77	void
78	fputresolu(ord, sl, ns, fp) /* put out picture dimensions */
79	int ord; /* scanline ordering */
80	int sl, ns; /* scanline length and number */
81	FILE *fp;
82	{
83	RESOLU rs;
84
85	if ((rs.rt = ord) & YMAJOR) {
86	rs.xr = sl;
87	rs.yr = ns;
88	} else {
89	rs.xr = ns;
90	rs.yr = sl;
91	}
92	fputsresolu(&rs, fp);
93	}
94
95
96	int
97	fgetresolu(sl, ns, fp) /* get picture dimensions */
98	int sl, ns; /* scanline length and number */
99	FILE *fp;
100	{
101	RESOLU rs;
102
103	if (!fgetsresolu(&rs, fp))
104	return(-1);
105	if (rs.rt & YMAJOR) {
106	*sl = rs.xr;
107	*ns = rs.yr;
108	} else {
109	*sl = rs.yr;
110	*ns = rs.xr;
111	}
112	return(rs.rt);
113	}
114
115
116	char *
117	resolu2str(buf, rp) /* convert resolution struct to line */
118	char *buf;
119	register RESOLU *rp;
120	{
121	if (rp->rt&YMAJOR)
122	sprintf(buf, "%cY %d %cX %d\n",
123	rp->rt&YDECR ? '-' : '+', rp->yr,
124	rp->rt&XDECR ? '-' : '+', rp->xr);
125	else
126	sprintf(buf, "%cX %d %cY %d\n",
127	rp->rt&XDECR ? '-' : '+', rp->xr,
128	rp->rt&YDECR ? '-' : '+', rp->yr);
129	return(buf);
130	}
131
132
133	int
134	str2resolu(rp, buf) /* convert resolution line to struct */
135	register RESOLU *rp;
136	char *buf;
137	{
138	register char xndx, yndx;
139	register char *cp;
140
141	if (buf == NULL)
142	return(0);
143	xndx = yndx = NULL;
144	for (cp = buf; *cp; cp++)
145	if (*cp == 'X')
146	xndx = cp;
147	else if (*cp == 'Y')
148	yndx = cp;
149	if (xndx == NULL \|\| yndx == NULL)
150	return(0);
151	rp->rt = 0;
152	if (xndx > yndx) rp->rt \|= YMAJOR;
153	if (xndx[-1] == '-') rp->rt \|= XDECR;
154	if (yndx[-1] == '-') rp->rt \|= YDECR;
155	if ((rp->xr = atoi(xndx+1)) <= 0)
156	return(0);
157	if ((rp->yr = atoi(yndx+1)) <= 0)
158	return(0);
159	return(1);
160	}