src/rt/mx_data.c

#ifndef lint
static const char       RCSid[] = "$Id$";
#endif
/*
 *  mx_data.c - routine for stored mixtures.
 */

/* ====================================================================
 * 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  "ray.h"

#include  "data.h"

#include  "func.h"

/*
 *  A stored mixture is specified:
 *
 *      modifier mixdata name
 *      6+ foremod backmod func dfname vfname v0 v1 .. xf
 *      0
 *      n A1 A2 ..
 *
 *  A picture mixture is specified as:
 *
 *      modifier mixpict name
 *      7+ foremod backmod func pfname vfname vx vy xf
 *      0
 *      n A1 A2 ..
 *
 *
 *  Vfname is the name of the file where the variable definitions
 *  can be found.  The list of real arguments can be accessed by
 *  definitions in the file.  Dfname is the data file.
 *  (Pfname is a picture file.)
 *  The dimensions of the data files and the number
 *  of variables must match.  The func is a single argument
 *  function in the case of mixdata (three argument in the case
 *  of mixpict), which returns the corrected data value given the
 *  interpolated value from the file.  The xf is a transformation
 *  to get from the original coordinates to the current coordinates.
 */


mx_data(m, r)                   /* interpolate mixture data */
register OBJREC  *m;
RAY  *r;
{
        OBJECT  obj;
        double  coef;
        double  pt[MAXDIM];
        DATARRAY  *dp;
        OBJECT  mod[2];
        register MFUNC  *mf;
        register int  i;

        if (m->oargs.nsargs < 6)
                objerror(m, USER, "bad # arguments");
        obj = objndx(m);
        for (i = 0; i < 2; i++)
                if (!strcmp(m->oargs.sarg[i], VOIDID))
                        mod[i] = OVOID;
                else if ((mod[i] = lastmod(obj, m->oargs.sarg[i])) == OVOID) {
                        sprintf(errmsg, "undefined modifier \"%s\"",
                                        m->oargs.sarg[i]);
                        objerror(m, USER, errmsg);
                }
        dp = getdata(m->oargs.sarg[3]);
        i = (1 << dp->nd) - 1;
        mf = getfunc(m, 4, i<<5, 0);
        setfunc(m, r);
        errno = 0;
        for (i = 0; i < dp->nd; i++) {
                pt[i] = evalue(mf->ep[i]);
                if (errno)
                        goto computerr;
        }
        coef = datavalue(dp, pt);
        errno = 0;
        coef = funvalue(m->oargs.sarg[2], 1, &coef);
        if (errno)
                goto computerr;
        if (raymixture(r, mod[0], mod[1], coef)) {
                if (m->omod != OVOID)
                        objerror(m, USER, "inappropriate modifier");
                return(1);
        }
        return(0);
computerr:
        objerror(m, WARNING, "compute error");
        return(0);
}


mx_pdata(m, r)                  /* interpolate mixture picture */
register OBJREC  *m;
RAY  *r;
{
        OBJECT  obj;
        double  col[3], coef;
        double  pt[MAXDIM];
        DATARRAY  *dp;
        OBJECT  mod[2];
        register MFUNC  *mf;
        register int  i;

        if (m->oargs.nsargs < 7)
                objerror(m, USER, "bad # arguments");
        obj = objndx(m);
        for (i = 0; i < 2; i++)
                if (!strcmp(m->oargs.sarg[i], VOIDID))
                        mod[i] = OVOID;
                else if ((mod[i] = lastmod(obj, m->oargs.sarg[i])) == OVOID) {
                        sprintf(errmsg, "undefined modifier \"%s\"",
                                        m->oargs.sarg[i]);
                        objerror(m, USER, errmsg);
                }
        dp = getpict(m->oargs.sarg[3]);
        mf = getfunc(m, 4, 0x3<<5, 0);
        setfunc(m, r);
        errno = 0;
        pt[1] = evalue(mf->ep[0]);      /* y major ordering */
        pt[0] = evalue(mf->ep[1]);
        if (errno)
                goto computerr;
        for (i = 0; i < 3; i++)         /* get pixel from picture */
                col[i] = datavalue(dp+i, pt);
        errno = 0;                      /* evaluate function on pixel */
        coef = funvalue(m->oargs.sarg[2], 3, col);
        if (errno)
                goto computerr;
        if (raymixture(r, mod[0], mod[1], coef)) {
                if (m->omod != OVOID)
                        objerror(m, USER, "inappropriate modifier");
                return(1);
        }
        return(0);
computerr:
        objerror(m, WARNING, "compute error");
        return(0);
}
Revision:	2.6
Committed:	Sat Feb 22 02:07:28 2003 UTC (22 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.5:	+57 -5 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
#	User	Rev	Content
1	greg	1.1	#ifndef lint
2	greg	2.6	static const char RCSid[] = "$Id$";
3	greg	1.1	#endif
4			/*
5			* mx_data.c - routine for stored mixtures.
6	greg	2.6	*/
7
8			/* ====================================================================
9			* The Radiance Software License, Version 1.0
10			*
11			* Copyright (c) 1990 - 2002 The Regents of the University of California,
12			* through Lawrence Berkeley National Laboratory. All rights reserved.
13			*
14			* Redistribution and use in source and binary forms, with or without
15			* modification, are permitted provided that the following conditions
16			* are met:
17			*
18			* 1. Redistributions of source code must retain the above copyright
19			* notice, this list of conditions and the following disclaimer.
20			*
21			* 2. Redistributions in binary form must reproduce the above copyright
22			* notice, this list of conditions and the following disclaimer in
23			* the documentation and/or other materials provided with the
24			* distribution.
25			*
26			* 3. The end-user documentation included with the redistribution,
27			* if any, must include the following acknowledgment:
28			* "This product includes Radiance software
29			* (http://radsite.lbl.gov/)
30			* developed by the Lawrence Berkeley National Laboratory
31			* (http://www.lbl.gov/)."
32			* Alternately, this acknowledgment may appear in the software itself,
33			* if and wherever such third-party acknowledgments normally appear.
34			*
35			* 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
36			* and "The Regents of the University of California" must
37			* not be used to endorse or promote products derived from this
38			* software without prior written permission. For written
39			* permission, please contact [email protected].
40			*
41			* 5. Products derived from this software may not be called "Radiance",
42			* nor may "Radiance" appear in their name, without prior written
43			* permission of Lawrence Berkeley National Laboratory.
44			*
45			* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
46			* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
47			* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
48			* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
49			* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
50			* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
51			* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
52			* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
53			* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
54			* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
55			* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56			* SUCH DAMAGE.
57			* ====================================================================
58	greg	1.1	*
59	greg	2.6	* This software consists of voluntary contributions made by many
60			* individuals on behalf of Lawrence Berkeley National Laboratory. For more
61			* information on Lawrence Berkeley National Laboratory, please see
62			* <http://www.lbl.gov/>.
63	greg	1.1	*/
64
65			#include "ray.h"
66
67			#include "data.h"
68
69	greg	2.2	#include "func.h"
70
71	greg	1.1	/*
72	gwlarson	2.5	* A stored mixture is specified:
73	greg	1.1	*
74			* modifier mixdata name
75			* 6+ foremod backmod func dfname vfname v0 v1 .. xf
76			* 0
77			* n A1 A2 ..
78			*
79	gwlarson	2.5	* A picture mixture is specified as:
80			*
81			* modifier mixpict name
82			* 7+ foremod backmod func pfname vfname vx vy xf
83			* 0
84			* n A1 A2 ..
85			*
86			*
87	greg	1.1	* Vfname is the name of the file where the variable definitions
88			* can be found. The list of real arguments can be accessed by
89			* definitions in the file. Dfname is the data file.
90	gwlarson	2.5	* (Pfname is a picture file.)
91	greg	1.1	* The dimensions of the data files and the number
92			* of variables must match. The func is a single argument
93	gwlarson	2.5	* function in the case of mixdata (three argument in the case
94			* of mixpict), which returns the corrected data value given the
95	greg	1.1	* interpolated value from the file. The xf is a transformation
96			* to get from the original coordinates to the current coordinates.
97			*/
98
99
100			mx_data(m, r) /* interpolate mixture data */
101			register OBJREC *m;
102			RAY *r;
103			{
104	gwlarson	2.4	OBJECT obj;
105	greg	1.1	double coef;
106			double pt[MAXDIM];
107			DATARRAY *dp;
108			OBJECT mod[2];
109	greg	2.2	register MFUNC *mf;
110			register int i;
111	greg	1.1
112			if (m->oargs.nsargs < 6)
113			objerror(m, USER, "bad # arguments");
114	gwlarson	2.4	obj = objndx(m);
115	greg	1.1	for (i = 0; i < 2; i++)
116	greg	2.2	if (!strcmp(m->oargs.sarg[i], VOIDID))
117	greg	1.1	mod[i] = OVOID;
118	gwlarson	2.4	else if ((mod[i] = lastmod(obj, m->oargs.sarg[i])) == OVOID) {
119	greg	2.2	sprintf(errmsg, "undefined modifier \"%s\"",
120			m->oargs.sarg[i]);
121	greg	1.1	objerror(m, USER, errmsg);
122			}
123	greg	2.2	dp = getdata(m->oargs.sarg[3]);
124			i = (1 << dp->nd) - 1;
125			mf = getfunc(m, 4, i<<5, 0);
126			setfunc(m, r);
127			errno = 0;
128			for (i = 0; i < dp->nd; i++) {
129			pt[i] = evalue(mf->ep[i]);
130	greg	1.1	if (errno)
131			goto computerr;
132			}
133			coef = datavalue(dp, pt);
134			errno = 0;
135	greg	2.2	coef = funvalue(m->oargs.sarg[2], 1, &coef);
136	gwlarson	2.5	if (errno)
137			goto computerr;
138			if (raymixture(r, mod[0], mod[1], coef)) {
139			if (m->omod != OVOID)
140			objerror(m, USER, "inappropriate modifier");
141			return(1);
142			}
143			return(0);
144			computerr:
145			objerror(m, WARNING, "compute error");
146			return(0);
147			}
148
149
150			mx_pdata(m, r) /* interpolate mixture picture */
151			register OBJREC *m;
152			RAY *r;
153			{
154			OBJECT obj;
155			double col[3], coef;
156			double pt[MAXDIM];
157			DATARRAY *dp;
158			OBJECT mod[2];
159			register MFUNC *mf;
160			register int i;
161
162			if (m->oargs.nsargs < 7)
163			objerror(m, USER, "bad # arguments");
164			obj = objndx(m);
165			for (i = 0; i < 2; i++)
166			if (!strcmp(m->oargs.sarg[i], VOIDID))
167			mod[i] = OVOID;
168			else if ((mod[i] = lastmod(obj, m->oargs.sarg[i])) == OVOID) {
169			sprintf(errmsg, "undefined modifier \"%s\"",
170			m->oargs.sarg[i]);
171			objerror(m, USER, errmsg);
172			}
173			dp = getpict(m->oargs.sarg[3]);
174			mf = getfunc(m, 4, 0x3<<5, 0);
175			setfunc(m, r);
176			errno = 0;
177			pt[1] = evalue(mf->ep[0]); /* y major ordering */
178			pt[0] = evalue(mf->ep[1]);
179			if (errno)
180			goto computerr;
181			for (i = 0; i < 3; i++) /* get pixel from picture */
182			col[i] = datavalue(dp+i, pt);
183			errno = 0; /* evaluate function on pixel */
184			coef = funvalue(m->oargs.sarg[2], 3, col);
185	greg	1.1	if (errno)
186			goto computerr;
187	greg	2.3	if (raymixture(r, mod[0], mod[1], coef)) {
188			if (m->omod != OVOID)
189			objerror(m, USER, "inappropriate modifier");
190			return(1);
191			}
192			return(0);
193	greg	1.1	computerr:
194			objerror(m, WARNING, "compute error");
195	greg	2.3	return(0);
196	greg	1.1	}