| 25 |
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#include "random.h" |
| 26 |
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#include "math.h" |
| 27 |
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|
| 28 |
– |
#define PMAPDUMP_REC "$Revision$" |
| 28 |
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|
| 30 |
– |
|
| 29 |
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/* Defaults */ |
| 30 |
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/* Sphere radius as fraction of avg. intersphere dist */ |
| 31 |
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/* Relative scale for sphere radius (fudge factor) */ |
| 40 |
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char *mat, *obj; |
| 41 |
|
} RadianceDef; |
| 42 |
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|
| 45 |
– |
|
| 43 |
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|
| 44 |
< |
/* Colour code is as follows: global = blue |
| 45 |
< |
precomp global = cyan |
| 49 |
< |
caustic = red |
| 50 |
< |
volume = green |
| 51 |
< |
direct = magenta |
| 52 |
< |
contrib = yellow */ |
| 44 |
> |
/* We use %e for the material def to preserve precision when outputting |
| 45 |
> |
photon flux */ |
| 46 |
|
const RadianceDef radDefs [] = { |
| 47 |
< |
{ "void plastic mat.global\n0\n0\n5 0 0 1 0 0\n", |
| 47 |
> |
{ "void glow mat.global\n0\n0\n4 %e %e %e 0\n", |
| 48 |
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"mat.global sphere obj.global\n0\n0\n4 %g %g %g %g\n" |
| 49 |
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}, |
| 50 |
< |
{ "void plastic mat.pglobal\n0\n0\n5 0 1 1 0 0\n", |
| 51 |
< |
"mat.pglobal sphere obj.global\n0\n0\n4 %g %g %g %g\n" |
| 50 |
> |
{ "void glow mat.pglobal\n0\n0\n4 %e %e %e 0\n", |
| 51 |
> |
"mat.pglobal sphere obj.pglobal\n0\n0\n4 %g %g %g %g\n" |
| 52 |
|
}, |
| 53 |
< |
{ "void plastic mat.caustic\n0\n0\n5 1 0 0 0 0\n", |
| 53 |
> |
{ "void glow mat.caustic\n0\n0\n4 %e %e %e 0\n", |
| 54 |
|
"mat.caustic sphere obj.caustic\n0\n0\n4 %g %g %g %g\n" |
| 55 |
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}, |
| 56 |
< |
{ "void plastic mat.volume\n0\n0\n5 0 1 0 0 0\n", |
| 56 |
> |
{ "void glow mat.volume\n0\n0\n4 %e %e %e 0\n", |
| 57 |
|
"mat.volume sphere obj.volume\n0\n0\n4 %g %g %g %g\n" |
| 58 |
|
}, |
| 59 |
< |
{ "void plastic mat.direct\n0\n0\n5 1 0 1 0 0\n", |
| 59 |
> |
{ "void glow mat.direct\n0\n0\n4 %e %e %e 0\n", |
| 60 |
|
"mat.direct sphere obj.direct\n0\n0\n4 %g %g %g %g\n" |
| 61 |
|
}, |
| 62 |
< |
{ "void plastic mat.contrib\n0\n0\n5 1 1 0 0 0\n", |
| 62 |
> |
{ "void glow mat.contrib\n0\n0\n4 %e %e %e 0\n", |
| 63 |
|
"mat.contrib sphere obj.contrib\n0\n0\n4 %g %g %g %g\n" |
| 64 |
|
} |
| 65 |
|
}; |
| 66 |
|
|
| 67 |
+ |
/* Default colour codes are as follows: global = blue |
| 68 |
+ |
precomp global = cyan |
| 69 |
+ |
caustic = red |
| 70 |
+ |
volume = green |
| 71 |
+ |
direct = magenta |
| 72 |
+ |
contrib = yellow */ |
| 73 |
+ |
const COLOR colDefs [] = { |
| 74 |
+ |
{0.25, 0.25, 2}, {0.1, 1, 1}, {1, 0.1, 0.1}, |
| 75 |
+ |
{0.1, 1, 0.1}, {1, 0.1, 1}, {1, 1, 0.1} |
| 76 |
+ |
}; |
| 77 |
|
|
| 78 |
|
|
| 79 |
|
int main (int argc, char** argv) |
| 80 |
|
{ |
| 81 |
< |
char format [128]; |
| 82 |
< |
RREAL rad, radScale = RADSCALE, vol, dumpRatio; |
| 83 |
< |
unsigned arg, j, ptype; |
| 81 |
> |
char format [MAXFMTLEN]; |
| 82 |
> |
RREAL rad, radScale = RADSCALE, extent, dumpRatio; |
| 83 |
> |
unsigned arg, j, ptype, dim, fluxCol = 0; |
| 84 |
|
long numSpheres = NSPHERES; |
| 85 |
+ |
COLOR customCol = {0, 0, 0}; |
| 86 |
|
FILE *pmapFile; |
| 87 |
|
PhotonMap pm; |
| 88 |
|
PhotonPrimary pri; |
| 90 |
|
#ifdef PMAP_OOC |
| 91 |
|
char leafFname [1024]; |
| 92 |
|
#endif |
| 93 |
< |
|
| 93 |
> |
|
| 94 |
> |
int setBool(char *str, int pos, int *var) |
| 95 |
> |
{ |
| 96 |
> |
switch ((str) [pos]) { |
| 97 |
> |
case '\0': |
| 98 |
> |
*var = !*var; |
| 99 |
> |
break; |
| 100 |
> |
case 'y': case 'Y': case 't': case 'T': case '+': case '1': |
| 101 |
> |
*var = 1; |
| 102 |
> |
break; |
| 103 |
> |
case 'n': case 'N': case 'f': case 'F': case '-': case '0': |
| 104 |
> |
*var = 0; |
| 105 |
> |
break; |
| 106 |
> |
default: |
| 107 |
> |
return 0; |
| 108 |
> |
} |
| 109 |
> |
|
| 110 |
> |
return 1; |
| 111 |
> |
} |
| 112 |
> |
|
| 113 |
|
if (argc < 2) { |
| 114 |
|
puts("Dump photon maps as RADIANCE scene description\n"); |
| 115 |
< |
printf("Usage: %s [-r radscale1] [-n nspheres1] pmap1 " |
| 116 |
< |
"[-r radscale2] [-n nspheres2] pmap2 ...\n", argv [0]); |
| 115 |
> |
printf("Usage: %s " |
| 116 |
> |
"[-r radscale1] [-n nspheres1] [-f | -c rcol1 gcol1 bcol1] pmap1 " |
| 117 |
> |
"[-r radscale2] [-n nspheres2] [-f | -c rcol2 gcol2 bcol2] pmap2 " |
| 118 |
> |
"...\n", argv [0]); |
| 119 |
|
return 1; |
| 120 |
|
} |
| 121 |
|
|
| 133 |
|
error(USER, "invalid number of spheres"); |
| 134 |
|
break; |
| 135 |
|
|
| 136 |
+ |
case 'c': |
| 137 |
+ |
if (fluxCol) |
| 138 |
+ |
error(USER, "-f and -c are mutually exclusive"); |
| 139 |
+ |
|
| 140 |
+ |
if (badarg(argc - arg - 1, &argv [arg + 1], "fff")) |
| 141 |
+ |
error(USER, "invalid RGB colour"); |
| 142 |
+ |
|
| 143 |
+ |
for (j = 0; j < 3; j++) |
| 144 |
+ |
customCol [j] = atof(argv [++arg]); |
| 145 |
+ |
break; |
| 146 |
+ |
|
| 147 |
+ |
case 'f': |
| 148 |
+ |
if (intens(customCol) > 0) |
| 149 |
+ |
error(USER, "-f and -c are mutually exclusive"); |
| 150 |
+ |
|
| 151 |
+ |
if (!setBool(argv [arg], 2, &fluxCol)) |
| 152 |
+ |
error(USER, "invalid option syntax at -f"); |
| 153 |
+ |
break; |
| 154 |
+ |
|
| 155 |
|
default: |
| 156 |
|
sprintf(errmsg, "unknown option %s", argv [arg]); |
| 157 |
|
error(USER, errmsg); |
| 160 |
|
|
| 161 |
|
continue; |
| 162 |
|
} |
| 163 |
< |
|
| 163 |
> |
|
| 164 |
|
/* Dump photon map */ |
| 165 |
|
if (!(pmapFile = fopen(argv [arg], "rb"))) { |
| 166 |
|
sprintf(errmsg, "can't open %s", argv [arg]); |
| 167 |
|
error(SYSTEM, errmsg); |
| 168 |
|
} |
| 169 |
< |
|
| 169 |
> |
|
| 170 |
|
/* Get format string */ |
| 171 |
|
strcpy(format, PMAP_FORMAT_GLOB); |
| 172 |
|
if (checkheader(pmapFile, format, NULL) != 1) { |
| 174 |
|
argv [arg], format); |
| 175 |
|
error(USER, errmsg); |
| 176 |
|
} |
| 177 |
< |
|
| 177 |
> |
|
| 178 |
|
/* Identify photon map type from format string */ |
| 179 |
|
for (ptype = 0; |
| 180 |
|
ptype < NUM_PMAP_TYPES && strcmp(pmapFormat [ptype], format); |
| 181 |
|
ptype++); |
| 182 |
< |
|
| 182 |
> |
|
| 183 |
|
if (!validPmapType(ptype)) { |
| 184 |
|
sprintf(errmsg, "file %s contains an unknown photon map type", |
| 185 |
|
argv [arg]); |
| 189 |
|
/* Get file format version and check for compatibility */ |
| 190 |
|
if (strcmp(getstr(format, pmapFile), PMAP_FILEVER)) |
| 191 |
|
error(USER, "incompatible photon map file format"); |
| 192 |
< |
|
| 192 |
> |
|
| 193 |
|
/* Dump command line as comment */ |
| 194 |
|
fputs("# ", stdout); |
| 195 |
|
printargs(argc, argv, stdout); |
| 196 |
|
fputc('\n', stdout); |
| 197 |
+ |
|
| 198 |
+ |
/* Dump common material def if constant for all photons, |
| 199 |
+ |
i.e. independent of individual flux */ |
| 200 |
+ |
if (!fluxCol) { |
| 201 |
+ |
if (intens(customCol) > 0) |
| 202 |
+ |
printf(radDefs [ptype].mat, |
| 203 |
+ |
customCol [0], customCol [1], customCol [2]); |
| 204 |
+ |
else |
| 205 |
+ |
printf(radDefs [ptype].mat, colDefs [ptype][0], |
| 206 |
+ |
colDefs [ptype][1], colDefs [ptype][2]); |
| 207 |
+ |
fputc('\n', stdout); |
| 208 |
+ |
} |
| 209 |
|
|
| 154 |
– |
/* Dump material def */ |
| 155 |
– |
fputs(radDefs [ptype].mat, stdout); |
| 156 |
– |
fputc('\n', stdout); |
| 157 |
– |
|
| 210 |
|
/* Get number of photons */ |
| 211 |
|
pm.numPhotons = getint(sizeof(pm.numPhotons), pmapFile); |
| 212 |
< |
|
| 212 |
> |
|
| 213 |
|
/* Skip avg photon flux */ |
| 214 |
|
for (j = 0; j < 3; j++) |
| 215 |
|
getflt(pmapFile); |
| 216 |
< |
|
| 216 |
> |
|
| 217 |
|
/* Get distribution extent (min & max photon positions) */ |
| 218 |
|
for (j = 0; j < 3; j++) { |
| 219 |
|
pm.minPos [j] = getflt(pmapFile); |
| 224 |
|
for (j = 0; j < 4; j++) |
| 225 |
|
getflt(pmapFile); |
| 226 |
|
|
| 227 |
< |
/* Sphere radius based on avg intersphere dist |
| 228 |
< |
(= sphere distrib density ^-1/3) */ |
| 229 |
< |
vol = (pm.maxPos [0] - pm.minPos [0]) * (pm.maxPos [1] - pm.minPos [1]) * |
| 230 |
< |
(pm.maxPos [2] - pm.minPos [2]); |
| 231 |
< |
rad = radScale * RADCOEFF * pow(vol / numSpheres, 1./3.); |
| 227 |
> |
/* Sphere radius based on avg intersphere dist depending on |
| 228 |
> |
whether the distribution occupies a 1D line (!), a 2D plane, |
| 229 |
> |
or 3D volume (= sphere distrib density ^-1/d, where d is the |
| 230 |
> |
dimensionality of the distribution) */ |
| 231 |
> |
for (j = 0, extent = 1.0, dim = 0; j < 3; j++) { |
| 232 |
> |
rad = pm.maxPos [j] - pm.minPos [j]; |
| 233 |
> |
|
| 234 |
> |
if (rad > FTINY) { |
| 235 |
> |
dim++; |
| 236 |
> |
extent *= rad; |
| 237 |
> |
} |
| 238 |
> |
} |
| 239 |
> |
|
| 240 |
> |
rad = radScale * RADCOEFF * pow(extent / numSpheres, 1./dim); |
| 241 |
|
|
| 242 |
|
/* Photon dump probability to satisfy target sphere count */ |
| 243 |
|
dumpRatio = numSpheres < pm.numPhotons |
| 247 |
|
pm.numPrimary = getint(sizeof(pm.numPrimary), pmapFile); |
| 248 |
|
while (pm.numPrimary-- > 0) { |
| 249 |
|
/* Skip source index & incident dir */ |
| 250 |
< |
getint(sizeof(pri.srcIdx) + sizeof(pri.dir), pmapFile); |
| 251 |
< |
#ifdef PMAP_PRIMARYPOS |
| 250 |
> |
getint(sizeof(pri.srcIdx), pmapFile); |
| 251 |
> |
#ifdef PMAP_PRIMARYDIR |
| 252 |
> |
/* Skip primary incident dir */ |
| 253 |
> |
getint(sizeof(pri.dir), pmapFile); |
| 254 |
> |
#endif |
| 255 |
> |
#ifdef PMAP_PRIMARYPOS |
| 256 |
|
/* Skip primary hitpoint */ |
| 257 |
|
for (j = 0; j < 3; j++) |
| 258 |
|
getflt(pmapFile); |
| 274 |
|
/* Load photons */ |
| 275 |
|
while (pm.numPhotons-- > 0) { |
| 276 |
|
#ifdef PMAP_OOC |
| 277 |
< |
/* Get entire photon record |
| 277 |
> |
/* Get entire photon record from ooC octree leaf file |
| 278 |
|
!!! OOC PMAP FILES CURRENTLY DON'T USE PORTABLE I/O !!! */ |
| 279 |
|
if (!fread(&p, sizeof(p), 1, pmapFile)) { |
| 280 |
|
sprintf(errmsg, "error reading OOC leaf file %s", leafFname); |
| 281 |
|
error(SYSTEM, errmsg); |
| 282 |
|
} |
| 283 |
< |
#else |
| 284 |
< |
/* Get photon position */ |
| 283 |
> |
#else /* kd-tree */ |
| 284 |
> |
/* Get photon position */ |
| 285 |
|
for (j = 0; j < 3; j++) |
| 286 |
|
p.pos [j] = getflt(pmapFile); |
| 287 |
< |
#endif |
| 288 |
< |
/* Dump photon probabilistically acc. to target sphere count */ |
| 224 |
< |
if (frandom() <= dumpRatio) { |
| 225 |
< |
printf(radDefs [ptype].obj, p.pos [0], p.pos [1], p.pos [2], rad); |
| 226 |
< |
fputc('\n', stdout); |
| 227 |
< |
} |
| 228 |
< |
|
| 229 |
< |
#ifndef PMAP_OOC |
| 230 |
< |
/* Skip photon normal and flux */ |
| 287 |
> |
|
| 288 |
> |
/* Get photon normal (currently not used) */ |
| 289 |
|
for (j = 0; j < 3; j++) |
| 290 |
< |
getint(sizeof(p.norm [j]), pmapFile); |
| 291 |
< |
|
| 292 |
< |
#ifdef PMAP_FLOAT_FLUX |
| 290 |
> |
p.norm [j] = getint(1, pmapFile); |
| 291 |
> |
|
| 292 |
> |
/* Get photon flux */ |
| 293 |
> |
#ifdef PMAP_FLOAT_FLUX |
| 294 |
|
for (j = 0; j < 3; j++) |
| 295 |
< |
getflt(pmapFile); |
| 296 |
< |
#else |
| 295 |
> |
p.flux [j] = getflt(pmapFile); |
| 296 |
> |
#else |
| 297 |
|
for (j = 0; j < 4; j++) |
| 298 |
< |
getint(1, pmapFile); |
| 299 |
< |
#endif |
| 298 |
> |
p.flux [j] = getint(1, pmapFile); |
| 299 |
> |
#endif |
| 300 |
|
|
| 301 |
|
/* Skip primary ray index */ |
| 302 |
|
getint(sizeof(p.primary), pmapFile); |
| 304 |
|
/* Skip flags */ |
| 305 |
|
getint(sizeof(p.flags), pmapFile); |
| 306 |
|
#endif |
| 307 |
< |
|
| 307 |
> |
|
| 308 |
> |
/* Dump photon probabilistically acc. to target sphere count */ |
| 309 |
> |
if (frandom() <= dumpRatio) { |
| 310 |
> |
if (fluxCol) { |
| 311 |
> |
/* Dump individual material def per photon acc. to flux */ |
| 312 |
> |
getPhotonFlux(&p, customCol); |
| 313 |
> |
printf(radDefs [ptype].mat, |
| 314 |
> |
customCol [0], customCol [1], customCol [2]); |
| 315 |
> |
fputc('\n', stdout); |
| 316 |
> |
} |
| 317 |
> |
|
| 318 |
> |
printf(radDefs [ptype].obj, p.pos [0], p.pos [1], p.pos [2], rad); |
| 319 |
> |
fputc('\n', stdout); |
| 320 |
> |
} |
| 321 |
> |
|
| 322 |
|
if (ferror(pmapFile) || feof(pmapFile)) { |
| 323 |
|
sprintf(errmsg, "error reading %s", argv [arg]); |
| 324 |
|
error(USER, errmsg); |
| 330 |
|
/* Reset defaults for next dump */ |
| 331 |
|
radScale = RADSCALE; |
| 332 |
|
numSpheres = NSPHERES; |
| 333 |
+ |
customCol [0] = customCol [1] = customCol [2] = 0; |
| 334 |
+ |
fluxCol = 0; |
| 335 |
|
} |
| 336 |
|
|
| 337 |
|
return 0; |
