src/rt/pmapio.c

#ifndef lint
static const char RCSid[] = "$Id: pmapio.c,v 2.6 2015/08/18 18:45:55 greg Exp $";
#endif
/* 
   ==================================================================
   Photon map file I/O

   Roland Schregle (roland.schregle@{hslu.ch, gmail.com})
   (c) Fraunhofer Institute for Solar Energy Systems,
   (c) Lucerne University of Applied Sciences and Arts,
   supported by the Swiss National Science Foundation (SNSF, #147053)
   ==================================================================
   
*/


#include "pmapio.h"
#include "pmapdiag.h"
#include "resolu.h"


void savePhotonMap (const PhotonMap *pmap, const char *fname,
                    int argc, char **argv)
{
   unsigned long i, j;
   const Photon* p;
   FILE* file;

   if (!pmap || !pmap -> heap || !pmap -> heapSize || 
       !validPmapType(pmap -> type)) {
      error(INTERNAL, "attempt to save empty or invalid photon map");
      return;
   }
      
   if (photonRepTime) {
      sprintf(errmsg, "Saving %s (%ld photons)...\n", 
              fname, pmap -> heapSize);
      eputs(errmsg);
      fflush(stderr);
   }
   
   if (!(file = fopen(fname, "wb"))) {
      sprintf(errmsg, "can't open photon map file %s", fname);
      error(SYSTEM, errmsg);
   }
      
   /* Write header */
   newheader("RADIANCE", file);
   
   /* Write command line */
   printargs(argc, argv, file);
   
   /* Include statistics in info text */
   fprintf(file, "%ld photons @ (%.2e, %.2e, %.2e) avg watts\n"
           "Extent [%.3f, %.3f, %.3f] [%.3f, %.3f, %.3f]\n",
           pmap -> heapSize, pmap -> photonFlux [0], 
           pmap -> photonFlux [1], pmap -> photonFlux [2],
           pmap -> minPos [0], pmap -> minPos [1], pmap -> minPos [2],
           pmap -> maxPos [0], pmap -> maxPos [1], pmap -> maxPos [2]);
   if (pmap -> primary)
      fprintf(file, "%d primary rays\n", pmap -> primaryEnd + 1);
   
   /* Write format */
   fputformat((char*)pmapFormat [pmap -> type], file);
   fprintf(file, "VERSION=%d\n", PMAP_FILEVER);
   
   /* Empty line = end of header */
   putc('\n', file);
   
   /* Write file format version */
   putint(PMAP_FILEVER, sizeof(PMAP_FILEVER), file); 
   
   /* Write number of photons */
   putint(pmap -> heapSize, sizeof(pmap -> heapSize), file);
   
   /* Write average photon flux */
   for (j = 0; j < 3; j++) 
      putflt(pmap -> photonFlux [j], file);

   /* Write max and min photon positions */
   for (j = 0; j < 3; j++) {
      putflt(pmap -> minPos [j], file);
      putflt(pmap -> maxPos [j], file);
   }

   /* Write centre of gravity */
   for (j = 0; j < 3; j++)
      putflt(pmap -> CoG [j], file);
      
   /* Write avg distance to centre of gravity */
   putflt(pmap -> CoGdist, file);
         
   for (i = 0, p = pmap -> heap; i < pmap -> heapSize; i++, p++) {
      /* Write photon attributes */
      for (j = 0; j < 3; j++)
         putflt(p -> pos [j], file);
         
      /* Bytewise dump otherwise we have portability probs */
      for (j = 0; j < 3; j++) 
         putint(p -> norm [j], 1, file);
         
      #ifdef PMAP_FLOAT_FLUX
         for (j = 0; j < 3; j++) 
            putflt(p -> flux [j], file);
      #else
         for (j = 0; j < 4; j++) 
            putint(p -> flux [j], 1, file);
      #endif

      putint(p -> primary, sizeof(p -> primary), file);
      putint(p -> flags, 1, file);
            
      if (ferror(file)) {
         sprintf(errmsg, "error writing photon map file %s", fname);
         error(SYSTEM, errmsg);
      }
   }
   
   /* Write out primary photon rays (or just zero count if none) */
   if (pmap -> primary) {
      /* primaryEnd points to last primary ray in array, so increment for
       * number of entries */
      putint(pmap -> primaryEnd + 1, sizeof(pmap -> primaryEnd), file);
      
      for (i = 0; i <= pmap -> primaryEnd; i++) {
         PhotonPrimary *prim = pmap -> primary + i;      
         
         putint(prim -> srcIdx, sizeof(prim -> srcIdx), file);

         putint(prim -> dir, sizeof(prim -> dir), file);
            
         for (j = 0; j < 3; j++)
            putflt(prim -> pos [j], file);
         
         if (ferror(file))
            error(SYSTEM, "error writing primary photon rays");
      }
   }
   else putint(0, sizeof(pmap -> primaryEnd), file);

   fclose(file);
}


PhotonMapType loadPhotonMap (PhotonMap *pmap, const char *fname)
{
   Photon* p;
   PhotonMapType ptype = PMAP_TYPE_NONE;
   char format [128];
   unsigned long i, j;
   FILE *file;

   if (!pmap)
      return PMAP_TYPE_NONE;
   
   if ((file = fopen(fname, "rb")) == NULL) {
      sprintf(errmsg, "can't open photon map file %s", fname);
      error(SYSTEM, errmsg);
   }

   /* Get format string */
   strcpy(format, PMAP_FORMAT_GLOB);
   if (checkheader(file, format, NULL) != 1) {
      sprintf(errmsg, "photon map file %s has unknown format %s", 
              fname, format);
      error(USER, errmsg);
   }
   
   /* Identify photon map type from format string */
   for (ptype = 0; 
        strcmp(pmapFormat [ptype], format) && ptype < NUM_PMAP_TYPES;
        ptype++);
      
   if (!validPmapType(ptype)) {
      sprintf(errmsg, "file %s contains an unknown photon map type", fname);
      error(USER, errmsg);
   }

   initPhotonMap(pmap, ptype);
   
   /* Get file format version and check for compatibility */
   if (getint(sizeof(PMAP_FILEVER), file) != PMAP_FILEVER)
      error(USER, "incompatible photon map file format");
      
   /* Get number of photons */
   pmap -> heapSize = pmap -> heapEnd = 
      getint(sizeof(pmap -> heapSize), file);
   pmap -> heap = (Photon *)malloc(pmap -> heapSize * sizeof(Photon));
   if (!pmap -> heap) 
      error(INTERNAL, "can't allocate photon heap from file");
      
   /* Get average photon flux */
   for (j = 0; j < 3; j++) 
      pmap -> photonFlux [j] = getflt(file);
   
   /* Get max and min photon positions */
   for (j = 0; j < 3; j++) {
      pmap -> minPos [j] = getflt(file);
      pmap -> maxPos [j] = getflt(file);
   }
   
   /* Get centre of gravity */
   for (j = 0; j < 3; j++)
      pmap -> CoG [j] = getflt(file);
      
   /* Get avg distance to centre of gravity */
   pmap -> CoGdist = getflt(file);
      
   /* Get photon attributes */   
   for (i = 0, p = pmap -> heap; i < pmap -> heapSize; i++, p++) {
      for (j = 0; j < 3; j++) 
         p -> pos [j] = getflt(file);
         
      /* Bytewise grab otherwise we have portability probs */
      for (j = 0; j < 3; j++) 
         p -> norm [j] = getint(1, file);
         
      #ifdef PMAP_FLOAT_FLUX
         for (j = 0; j < 3; j++) 
            p -> flux [j] = getflt(file);
      #else      
         for (j = 0; j < 4; j++) 
            p -> flux [j] = getint(1, file);
      #endif

      p -> primary = getint(sizeof(p -> primary), file);
      p -> flags = getint(1, file);
      
      if (feof(file)) {
         sprintf(errmsg, "error reading photon map file %s", fname);
         error(SYSTEM, errmsg);
      }
   }
      
   /* Get primary photon rays */
   pmap -> primarySize = getint(sizeof(pmap -> primarySize), file);
   
   if (pmap -> primarySize) {
      pmap -> primaryEnd = pmap -> primarySize - 1;
      pmap -> primary = (PhotonPrimary*)malloc(pmap -> primarySize *
                                               sizeof(PhotonPrimary));
      if (!pmap -> primary)
         error(INTERNAL, "can't allocate primary photon rays");
         
      for (i = 0; i < pmap -> primarySize; i++) {
         PhotonPrimary *prim = pmap -> primary + i;
         
         prim -> srcIdx = getint(sizeof(prim -> srcIdx), file);
         
         prim -> dir = getint(sizeof(prim -> dir), file);
            
         for (j = 0; j < 3; j++)
            prim -> pos [j] = getflt(file);
            
         if (feof(file))
            error(SYSTEM, "error reading primary photon rays");
      }
   }
   
   fclose(file);
   
   return ptype;
}
Revision:	2.7
Committed:	Tue Sep 1 16:27:52 2015 UTC (10 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad5R0
Changes since 2.6:	+1 -2 lines
Log Message:	Removed redundant $Id: in file
#	User	Rev	Content
1	greg	2.6	#ifndef lint
2	greg	2.7	static const char RCSid[] = "$Id: pmapio.c,v 2.6 2015/08/18 18:45:55 greg Exp $";
3	greg	2.6	#endif
4	greg	2.1	/*
5			==================================================================
6			Photon map file I/O
7
8			Roland Schregle (roland.schregle@{hslu.ch, gmail.com})
9			(c) Fraunhofer Institute for Solar Energy Systems,
10	rschregle	2.2	(c) Lucerne University of Applied Sciences and Arts,
11			supported by the Swiss National Science Foundation (SNSF, #147053)
12	greg	2.1	==================================================================
13
14			*/
15
16
17
18			#include "pmapio.h"
19			#include "pmapdiag.h"
20			#include "resolu.h"
21
22
23
24			void savePhotonMap (const PhotonMap pmap, const char fname,
25	greg	2.5	int argc, char **argv)
26	greg	2.1	{
27			unsigned long i, j;
28			const Photon* p;
29			FILE* file;
30
31			if (!pmap \|\| !pmap -> heap \|\| !pmap -> heapSize \|\|
32	greg	2.5	!validPmapType(pmap -> type)) {
33	greg	2.1	error(INTERNAL, "attempt to save empty or invalid photon map");
34			return;
35			}
36
37			if (photonRepTime) {
38			sprintf(errmsg, "Saving %s (%ld photons)...\n",
39			fname, pmap -> heapSize);
40			eputs(errmsg);
41			fflush(stderr);
42			}
43
44			if (!(file = fopen(fname, "wb"))) {
45			sprintf(errmsg, "can't open photon map file %s", fname);
46			error(SYSTEM, errmsg);
47			}
48
49			/* Write header */
50			newheader("RADIANCE", file);
51
52			/* Write command line */
53			printargs(argc, argv, file);
54
55			/* Include statistics in info text */
56			fprintf(file, "%ld photons @ (%.2e, %.2e, %.2e) avg watts\n"
57			"Extent [%.3f, %.3f, %.3f] [%.3f, %.3f, %.3f]\n",
58			pmap -> heapSize, pmap -> photonFlux [0],
59			pmap -> photonFlux [1], pmap -> photonFlux [2],
60			pmap -> minPos [0], pmap -> minPos [1], pmap -> minPos [2],
61			pmap -> maxPos [0], pmap -> maxPos [1], pmap -> maxPos [2]);
62			if (pmap -> primary)
63			fprintf(file, "%d primary rays\n", pmap -> primaryEnd + 1);
64
65			/* Write format */
66	greg	2.5	fputformat((char*)pmapFormat [pmap -> type], file);
67	greg	2.1	fprintf(file, "VERSION=%d\n", PMAP_FILEVER);
68
69			/* Empty line = end of header */
70			putc('\n', file);
71
72			/* Write file format version */
73			putint(PMAP_FILEVER, sizeof(PMAP_FILEVER), file);
74
75			/* Write number of photons */
76			putint(pmap -> heapSize, sizeof(pmap -> heapSize), file);
77
78			/* Write average photon flux */
79			for (j = 0; j < 3; j++)
80			putflt(pmap -> photonFlux [j], file);
81
82			/* Write max and min photon positions */
83			for (j = 0; j < 3; j++) {
84			putflt(pmap -> minPos [j], file);
85			putflt(pmap -> maxPos [j], file);
86			}
87
88			/* Write centre of gravity */
89			for (j = 0; j < 3; j++)
90			putflt(pmap -> CoG [j], file);
91
92			/* Write avg distance to centre of gravity */
93			putflt(pmap -> CoGdist, file);
94
95			for (i = 0, p = pmap -> heap; i < pmap -> heapSize; i++, p++) {
96			/* Write photon attributes */
97			for (j = 0; j < 3; j++)
98			putflt(p -> pos [j], file);
99
100			/* Bytewise dump otherwise we have portability probs */
101			for (j = 0; j < 3; j++)
102			putint(p -> norm [j], 1, file);
103
104			#ifdef PMAP_FLOAT_FLUX
105			for (j = 0; j < 3; j++)
106			putflt(p -> flux [j], file);
107			#else
108			for (j = 0; j < 4; j++)
109			putint(p -> flux [j], 1, file);
110			#endif
111
112			putint(p -> primary, sizeof(p -> primary), file);
113			putint(p -> flags, 1, file);
114
115			if (ferror(file)) {
116			sprintf(errmsg, "error writing photon map file %s", fname);
117			error(SYSTEM, errmsg);
118			}
119			}
120
121			/* Write out primary photon rays (or just zero count if none) */
122			if (pmap -> primary) {
123			/* primaryEnd points to last primary ray in array, so increment for
124			* number of entries */
125			putint(pmap -> primaryEnd + 1, sizeof(pmap -> primaryEnd), file);
126
127			for (i = 0; i <= pmap -> primaryEnd; i++) {
128			PhotonPrimary *prim = pmap -> primary + i;
129
130			putint(prim -> srcIdx, sizeof(prim -> srcIdx), file);
131
132	greg	2.4	putint(prim -> dir, sizeof(prim -> dir), file);
133	greg	2.1
134			for (j = 0; j < 3; j++)
135	greg	2.3	putflt(prim -> pos [j], file);
136	greg	2.1
137			if (ferror(file))
138			error(SYSTEM, "error writing primary photon rays");
139			}
140			}
141			else putint(0, sizeof(pmap -> primaryEnd), file);
142
143			fclose(file);
144			}
145
146
147
148			PhotonMapType loadPhotonMap (PhotonMap pmap, const char fname)
149			{
150			Photon* p;
151			PhotonMapType ptype = PMAP_TYPE_NONE;
152			char format [128];
153			unsigned long i, j;
154			FILE *file;
155
156			if (!pmap)
157			return PMAP_TYPE_NONE;
158
159			if ((file = fopen(fname, "rb")) == NULL) {
160			sprintf(errmsg, "can't open photon map file %s", fname);
161			error(SYSTEM, errmsg);
162			}
163
164			/* Get format string */
165			strcpy(format, PMAP_FORMAT_GLOB);
166			if (checkheader(file, format, NULL) != 1) {
167			sprintf(errmsg, "photon map file %s has unknown format %s",
168			fname, format);
169			error(USER, errmsg);
170			}
171
172			/* Identify photon map type from format string */
173			for (ptype = 0;
174			strcmp(pmapFormat [ptype], format) && ptype < NUM_PMAP_TYPES;
175			ptype++);
176
177			if (!validPmapType(ptype)) {
178			sprintf(errmsg, "file %s contains an unknown photon map type", fname);
179			error(USER, errmsg);
180			}
181
182			initPhotonMap(pmap, ptype);
183
184			/* Get file format version and check for compatibility */
185			if (getint(sizeof(PMAP_FILEVER), file) != PMAP_FILEVER)
186			error(USER, "incompatible photon map file format");
187
188			/* Get number of photons */
189			pmap -> heapSize = pmap -> heapEnd =
190			getint(sizeof(pmap -> heapSize), file);
191			pmap -> heap = (Photon )malloc(pmap -> heapSize sizeof(Photon));
192			if (!pmap -> heap)
193			error(INTERNAL, "can't allocate photon heap from file");
194
195			/* Get average photon flux */
196			for (j = 0; j < 3; j++)
197			pmap -> photonFlux [j] = getflt(file);
198
199			/* Get max and min photon positions */
200			for (j = 0; j < 3; j++) {
201			pmap -> minPos [j] = getflt(file);
202			pmap -> maxPos [j] = getflt(file);
203			}
204
205			/* Get centre of gravity */
206			for (j = 0; j < 3; j++)
207			pmap -> CoG [j] = getflt(file);
208
209			/* Get avg distance to centre of gravity */
210			pmap -> CoGdist = getflt(file);
211
212			/* Get photon attributes */
213			for (i = 0, p = pmap -> heap; i < pmap -> heapSize; i++, p++) {
214			for (j = 0; j < 3; j++)
215			p -> pos [j] = getflt(file);
216
217			/* Bytewise grab otherwise we have portability probs */
218			for (j = 0; j < 3; j++)
219			p -> norm [j] = getint(1, file);
220
221			#ifdef PMAP_FLOAT_FLUX
222			for (j = 0; j < 3; j++)
223			p -> flux [j] = getflt(file);
224			#else
225			for (j = 0; j < 4; j++)
226			p -> flux [j] = getint(1, file);
227			#endif
228
229			p -> primary = getint(sizeof(p -> primary), file);
230			p -> flags = getint(1, file);
231
232			if (feof(file)) {
233			sprintf(errmsg, "error reading photon map file %s", fname);
234			error(SYSTEM, errmsg);
235			}
236			}
237
238			/* Get primary photon rays */
239			pmap -> primarySize = getint(sizeof(pmap -> primarySize), file);
240
241			if (pmap -> primarySize) {
242			pmap -> primaryEnd = pmap -> primarySize - 1;
243			pmap -> primary = (PhotonPrimary)malloc(pmap -> primarySize
244			sizeof(PhotonPrimary));
245			if (!pmap -> primary)
246			error(INTERNAL, "can't allocate primary photon rays");
247
248			for (i = 0; i < pmap -> primarySize; i++) {
249			PhotonPrimary *prim = pmap -> primary + i;
250
251			prim -> srcIdx = getint(sizeof(prim -> srcIdx), file);
252
253	greg	2.4	prim -> dir = getint(sizeof(prim -> dir), file);
254	greg	2.1
255			for (j = 0; j < 3; j++)
256	greg	2.3	prim -> pos [j] = getflt(file);
257	greg	2.1
258			if (feof(file))
259			error(SYSTEM, "error reading primary photon rays");
260			}
261			}
262
263			fclose(file);
264
265			return ptype;
266			}