src/rt/pmapio.c

#ifndef lint
static const char RCSid[] = "$Id$";
#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)
   ==================================================================
   
   $Id: pmapio.c,v 2.5 2015/05/22 14:09:01 greg Exp $    
*/


#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:	2.6
Committed:	Tue Aug 18 18:45:55 2015 UTC (10 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.5:	+4 -1 lines
Log Message:	Added missing RCSid forgotten during initial check-in
#	User	Rev	Content
1	greg	2.6	#ifndef lint
2			static const char RCSid[] = "$Id$";
3			#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	greg	2.6	$Id: pmapio.c,v 2.5 2015/05/22 14:09:01 greg Exp $
15	greg	2.1	*/
16
17
18
19			#include "pmapio.h"
20			#include "pmapdiag.h"
21			#include "resolu.h"
22
23
24
25			void savePhotonMap (const PhotonMap pmap, const char fname,
26	greg	2.5	int argc, char **argv)
27	greg	2.1	{
28			unsigned long i, j;
29			const Photon* p;
30			FILE* file;
31
32			if (!pmap \|\| !pmap -> heap \|\| !pmap -> heapSize \|\|
33	greg	2.5	!validPmapType(pmap -> type)) {
34	greg	2.1	error(INTERNAL, "attempt to save empty or invalid photon map");
35			return;
36			}
37
38			if (photonRepTime) {
39			sprintf(errmsg, "Saving %s (%ld photons)...\n",
40			fname, pmap -> heapSize);
41			eputs(errmsg);
42			fflush(stderr);
43			}
44
45			if (!(file = fopen(fname, "wb"))) {
46			sprintf(errmsg, "can't open photon map file %s", fname);
47			error(SYSTEM, errmsg);
48			}
49
50			/* Write header */
51			newheader("RADIANCE", file);
52
53			/* Write command line */
54			printargs(argc, argv, file);
55
56			/* Include statistics in info text */
57			fprintf(file, "%ld photons @ (%.2e, %.2e, %.2e) avg watts\n"
58			"Extent [%.3f, %.3f, %.3f] [%.3f, %.3f, %.3f]\n",
59			pmap -> heapSize, pmap -> photonFlux [0],
60			pmap -> photonFlux [1], pmap -> photonFlux [2],
61			pmap -> minPos [0], pmap -> minPos [1], pmap -> minPos [2],
62			pmap -> maxPos [0], pmap -> maxPos [1], pmap -> maxPos [2]);
63			if (pmap -> primary)
64			fprintf(file, "%d primary rays\n", pmap -> primaryEnd + 1);
65
66			/* Write format */
67	greg	2.5	fputformat((char*)pmapFormat [pmap -> type], file);
68	greg	2.1	fprintf(file, "VERSION=%d\n", PMAP_FILEVER);
69
70			/* Empty line = end of header */
71			putc('\n', file);
72
73			/* Write file format version */
74			putint(PMAP_FILEVER, sizeof(PMAP_FILEVER), file);
75
76			/* Write number of photons */
77			putint(pmap -> heapSize, sizeof(pmap -> heapSize), file);
78
79			/* Write average photon flux */
80			for (j = 0; j < 3; j++)
81			putflt(pmap -> photonFlux [j], file);
82
83			/* Write max and min photon positions */
84			for (j = 0; j < 3; j++) {
85			putflt(pmap -> minPos [j], file);
86			putflt(pmap -> maxPos [j], file);
87			}
88
89			/* Write centre of gravity */
90			for (j = 0; j < 3; j++)
91			putflt(pmap -> CoG [j], file);
92
93			/* Write avg distance to centre of gravity */
94			putflt(pmap -> CoGdist, file);
95
96			for (i = 0, p = pmap -> heap; i < pmap -> heapSize; i++, p++) {
97			/* Write photon attributes */
98			for (j = 0; j < 3; j++)
99			putflt(p -> pos [j], file);
100
101			/* Bytewise dump otherwise we have portability probs */
102			for (j = 0; j < 3; j++)
103			putint(p -> norm [j], 1, file);
104
105			#ifdef PMAP_FLOAT_FLUX
106			for (j = 0; j < 3; j++)
107			putflt(p -> flux [j], file);
108			#else
109			for (j = 0; j < 4; j++)
110			putint(p -> flux [j], 1, file);
111			#endif
112
113			putint(p -> primary, sizeof(p -> primary), file);
114			putint(p -> flags, 1, file);
115
116			if (ferror(file)) {
117			sprintf(errmsg, "error writing photon map file %s", fname);
118			error(SYSTEM, errmsg);
119			}
120			}
121
122			/* Write out primary photon rays (or just zero count if none) */
123			if (pmap -> primary) {
124			/* primaryEnd points to last primary ray in array, so increment for
125			* number of entries */
126			putint(pmap -> primaryEnd + 1, sizeof(pmap -> primaryEnd), file);
127
128			for (i = 0; i <= pmap -> primaryEnd; i++) {
129			PhotonPrimary *prim = pmap -> primary + i;
130
131			putint(prim -> srcIdx, sizeof(prim -> srcIdx), file);
132
133	greg	2.4	putint(prim -> dir, sizeof(prim -> dir), file);
134	greg	2.1
135			for (j = 0; j < 3; j++)
136	greg	2.3	putflt(prim -> pos [j], file);
137	greg	2.1
138			if (ferror(file))
139			error(SYSTEM, "error writing primary photon rays");
140			}
141			}
142			else putint(0, sizeof(pmap -> primaryEnd), file);
143
144			fclose(file);
145			}
146
147
148
149			PhotonMapType loadPhotonMap (PhotonMap pmap, const char fname)
150			{
151			Photon* p;
152			PhotonMapType ptype = PMAP_TYPE_NONE;
153			char format [128];
154			unsigned long i, j;
155			FILE *file;
156
157			if (!pmap)
158			return PMAP_TYPE_NONE;
159
160			if ((file = fopen(fname, "rb")) == NULL) {
161			sprintf(errmsg, "can't open photon map file %s", fname);
162			error(SYSTEM, errmsg);
163			}
164
165			/* Get format string */
166			strcpy(format, PMAP_FORMAT_GLOB);
167			if (checkheader(file, format, NULL) != 1) {
168			sprintf(errmsg, "photon map file %s has unknown format %s",
169			fname, format);
170			error(USER, errmsg);
171			}
172
173			/* Identify photon map type from format string */
174			for (ptype = 0;
175			strcmp(pmapFormat [ptype], format) && ptype < NUM_PMAP_TYPES;
176			ptype++);
177
178			if (!validPmapType(ptype)) {
179			sprintf(errmsg, "file %s contains an unknown photon map type", fname);
180			error(USER, errmsg);
181			}
182
183			initPhotonMap(pmap, ptype);
184
185			/* Get file format version and check for compatibility */
186			if (getint(sizeof(PMAP_FILEVER), file) != PMAP_FILEVER)
187			error(USER, "incompatible photon map file format");
188
189			/* Get number of photons */
190			pmap -> heapSize = pmap -> heapEnd =
191			getint(sizeof(pmap -> heapSize), file);
192			pmap -> heap = (Photon )malloc(pmap -> heapSize sizeof(Photon));
193			if (!pmap -> heap)
194			error(INTERNAL, "can't allocate photon heap from file");
195
196			/* Get average photon flux */
197			for (j = 0; j < 3; j++)
198			pmap -> photonFlux [j] = getflt(file);
199
200			/* Get max and min photon positions */
201			for (j = 0; j < 3; j++) {
202			pmap -> minPos [j] = getflt(file);
203			pmap -> maxPos [j] = getflt(file);
204			}
205
206			/* Get centre of gravity */
207			for (j = 0; j < 3; j++)
208			pmap -> CoG [j] = getflt(file);
209
210			/* Get avg distance to centre of gravity */
211			pmap -> CoGdist = getflt(file);
212
213			/* Get photon attributes */
214			for (i = 0, p = pmap -> heap; i < pmap -> heapSize; i++, p++) {
215			for (j = 0; j < 3; j++)
216			p -> pos [j] = getflt(file);
217
218			/* Bytewise grab otherwise we have portability probs */
219			for (j = 0; j < 3; j++)
220			p -> norm [j] = getint(1, file);
221
222			#ifdef PMAP_FLOAT_FLUX
223			for (j = 0; j < 3; j++)
224			p -> flux [j] = getflt(file);
225			#else
226			for (j = 0; j < 4; j++)
227			p -> flux [j] = getint(1, file);
228			#endif
229
230			p -> primary = getint(sizeof(p -> primary), file);
231			p -> flags = getint(1, file);
232
233			if (feof(file)) {
234			sprintf(errmsg, "error reading photon map file %s", fname);
235			error(SYSTEM, errmsg);
236			}
237			}
238
239			/* Get primary photon rays */
240			pmap -> primarySize = getint(sizeof(pmap -> primarySize), file);
241
242			if (pmap -> primarySize) {
243			pmap -> primaryEnd = pmap -> primarySize - 1;
244			pmap -> primary = (PhotonPrimary)malloc(pmap -> primarySize
245			sizeof(PhotonPrimary));
246			if (!pmap -> primary)
247			error(INTERNAL, "can't allocate primary photon rays");
248
249			for (i = 0; i < pmap -> primarySize; i++) {
250			PhotonPrimary *prim = pmap -> primary + i;
251
252			prim -> srcIdx = getint(sizeof(prim -> srcIdx), file);
253
254	greg	2.4	prim -> dir = getint(sizeof(prim -> dir), file);
255	greg	2.1
256			for (j = 0; j < 3; j++)
257	greg	2.3	prim -> pos [j] = getflt(file);
258	greg	2.1
259			if (feof(file))
260			error(SYSTEM, "error reading primary photon rays");
261			}
262			}
263
264			fclose(file);
265
266			return ptype;
267			}