| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: pmapio.c,v 4.18 2015/10/20 15:50:35 taschreg Exp taschreg $"; |
| 3 |
#endif |
| 4 |
/* |
| 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 |
(c) Lucerne University of Applied Sciences and Arts, |
| 11 |
supported by the Swiss National Science Foundation (SNSF, #147053) |
| 12 |
================================================================== |
| 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 |
int argc, char **argv) |
| 26 |
{ |
| 27 |
unsigned long i, j; |
| 28 |
const Photon* p; |
| 29 |
FILE* file; |
| 30 |
|
| 31 |
if (!pmap || !pmap -> heap || !pmap -> heapSize || |
| 32 |
!validPmapType(pmap -> type)) { |
| 33 |
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 |
fputformat((char*)pmapFormat [pmap -> type], file); |
| 67 |
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 |
putint(prim -> dir, sizeof(prim -> dir), file); |
| 133 |
|
| 134 |
for (j = 0; j < 3; j++) |
| 135 |
putflt(prim -> pos [j], file); |
| 136 |
|
| 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 |
ptype < NUM_PMAP_TYPES && strcmp(pmapFormat [ptype], format); |
| 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 |
prim -> dir = getint(sizeof(prim -> dir), file); |
| 254 |
|
| 255 |
for (j = 0; j < 3; j++) |
| 256 |
prim -> pos [j] = getflt(file); |
| 257 |
|
| 258 |
if (feof(file)) |
| 259 |
error(SYSTEM, "error reading primary photon rays"); |
| 260 |
} |
| 261 |
} |
| 262 |
|
| 263 |
fclose(file); |
| 264 |
|
| 265 |
return ptype; |
| 266 |
} |
