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#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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================================================================== |
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====================================================================== |
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Dump photon maps as RADIANCE scene description to stdout |
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Roland Schregle (roland.schregle@{hslu.ch, gmail.com}) |
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(c) Fraunhofer Institute for Solar Energy Systems, |
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(c) Lucerne University of Applied Sciences and Arts, |
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supported by the Swiss National Science Foundation (SNSF, #147053) |
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================================================================== |
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supported by the Swiss National Science Foundation (SNSF, #147053) |
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====================================================================== |
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$Id$ |
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*/ |
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char *mat, *obj; |
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} RadianceDef; |
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|
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– |
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– |
static char header [] = "$Revision$"; |
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/* Colour code is as follows: global = blue |
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precomp global = cyan |
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caustic = red |
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volume = green |
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direct = magenta |
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contrib = yellow */ |
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/* We use %e for the material def to preserve precision when outputting |
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photon flux */ |
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const RadianceDef radDefs [] = { |
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{ "void plastic mat.global\n0\n0\n5 0 0 1 0 0\n", |
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{ "void glow mat.global\n0\n0\n4 %e %e %e 0\n", |
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"mat.global sphere obj.global\n0\n0\n4 %g %g %g %g\n" |
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}, |
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{ "void plastic mat.pglobal\n0\n0\n5 0 1 1 0 0\n", |
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"mat.pglobal sphere obj.global\n0\n0\n4 %g %g %g %g\n" |
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> |
{ "void glow mat.pglobal\n0\n0\n4 %e %e %e 0\n", |
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"mat.pglobal sphere obj.pglobal\n0\n0\n4 %g %g %g %g\n" |
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}, |
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{ "void plastic mat.caustic\n0\n0\n5 1 0 0 0 0\n", |
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{ "void glow mat.caustic\n0\n0\n4 %e %e %e 0\n", |
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"mat.caustic sphere obj.caustic\n0\n0\n4 %g %g %g %g\n" |
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}, |
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{ "void plastic mat.volume\n0\n0\n5 0 1 0 0 0\n", |
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{ "void glow mat.volume\n0\n0\n4 %e %e %e 0\n", |
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"mat.volume sphere obj.volume\n0\n0\n4 %g %g %g %g\n" |
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}, |
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{ "void plastic mat.direct\n0\n0\n5 1 0 1 0 0\n", |
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{ "void glow mat.direct\n0\n0\n4 %e %e %e 0\n", |
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"mat.direct sphere obj.direct\n0\n0\n4 %g %g %g %g\n" |
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}, |
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{ "void plastic mat.contrib\n0\n0\n5 1 1 0 0 0\n", |
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{ "void glow mat.contrib\n0\n0\n4 %e %e %e 0\n", |
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"mat.contrib sphere obj.contrib\n0\n0\n4 %g %g %g %g\n" |
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} |
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}; |
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/* Default colour codes are as follows: global = blue |
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precomp global = cyan |
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caustic = red |
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volume = green |
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direct = magenta |
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contrib = yellow */ |
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const COLOR colDefs [] = { |
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{0.25, 0.25, 2}, {0.1, 1, 1}, {1, 0.1, 0.1}, |
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{0.1, 1, 0.1}, {1, 0.1, 1}, {1, 1, 0.1} |
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}; |
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int main (int argc, char** argv) |
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{ |
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char format [128]; |
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RREAL rad, radScale = RADSCALE, vol, dumpRatio; |
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FVECT minPos, maxPos; |
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unsigned arg, j, ptype; |
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long numPhotons, numSpheres = NSPHERES; |
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FILE *pmapFile; |
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< |
Photon p; |
| 88 |
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|
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char format [MAXFMTLEN]; |
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RREAL rad, radScale = RADSCALE, extent, dumpRatio; |
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unsigned arg, j, ptype, dim, fluxCol = 0; |
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long numSpheres = NSPHERES; |
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COLOR customCol = {0, 0, 0}; |
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FILE *pmapFile; |
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> |
PhotonMap pm; |
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> |
PhotonPrimary pri; |
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Photon p; |
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#ifdef PMAP_OOC |
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> |
char leafFname [1024]; |
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> |
#endif |
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> |
|
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int setBool(char *str, int pos, int *var) |
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> |
{ |
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> |
switch ((str) [pos]) { |
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> |
case '\0': |
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> |
*var = !*var; |
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> |
break; |
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case 'y': case 'Y': case 't': case 'T': case '+': case '1': |
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*var = 1; |
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break; |
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case 'n': case 'N': case 'f': case 'F': case '-': case '0': |
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*var = 0; |
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> |
break; |
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default: |
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return 0; |
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} |
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|
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return 1; |
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} |
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|
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if (argc < 2) { |
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puts("Dump photon maps as RADIANCE scene description\n"); |
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printf("Usage: %s [-r radscale1] [-n nspheres1] pmap1 " |
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"[-r radscale2] [-n nspheres2] pmap2 ...\n", argv [0]); |
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printf("Usage: %s " |
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> |
"[-r radscale1] [-n nspheres1] [-f | -c rcol1 gcol1 bcol1] pmap1 " |
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"[-r radscale2] [-n nspheres2] [-f | -c rcol2 gcol2 bcol2] pmap2 " |
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"...\n", argv [0]); |
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return 1; |
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} |
| 121 |
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error(USER, "invalid number of spheres"); |
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break; |
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|
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case 'c': |
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if (fluxCol) |
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error(USER, "-f and -c are mutually exclusive"); |
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|
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if (badarg(argc - arg - 1, &argv [arg + 1], "fff")) |
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error(USER, "invalid RGB colour"); |
| 142 |
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|
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for (j = 0; j < 3; j++) |
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customCol [j] = atof(argv [++arg]); |
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break; |
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|
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case 'f': |
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if (intens(customCol) > 0) |
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error(USER, "-f and -c are mutually exclusive"); |
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|
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if (!setBool(argv [arg], 2, &fluxCol)) |
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error(USER, "invalid option syntax at -f"); |
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break; |
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+ |
|
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default: |
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sprintf(errmsg, "unknown option %s", argv [arg]); |
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error(USER, errmsg); |
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|
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continue; |
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} |
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> |
|
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/* Dump photon map */ |
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if (!(pmapFile = fopen(argv [arg], "rb"))) { |
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sprintf(errmsg, "can't open %s", argv [arg]); |
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error(SYSTEM, errmsg); |
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} |
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|
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> |
|
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/* Get format string */ |
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strcpy(format, PMAP_FORMAT_GLOB); |
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if (checkheader(pmapFile, format, NULL) != 1) { |
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argv [arg], format); |
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error(USER, errmsg); |
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} |
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|
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> |
|
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/* Identify photon map type from format string */ |
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for (ptype = 0; |
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strcmp(pmapFormat [ptype], format) && ptype < NUM_PMAP_TYPES; |
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> |
ptype < NUM_PMAP_TYPES && strcmp(pmapFormat [ptype], format); |
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ptype++); |
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> |
|
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if (!validPmapType(ptype)) { |
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sprintf(errmsg, "file %s contains an unknown photon map type", |
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argv [arg]); |
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} |
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|
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/* Get file format version and check for compatibility */ |
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if (getint(sizeof(PMAP_FILEVER), pmapFile) != PMAP_FILEVER) |
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> |
if (strcmp(getstr(format, pmapFile), PMAP_FILEVER)) |
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error(USER, "incompatible photon map file format"); |
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|
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> |
|
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/* Dump command line as comment */ |
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fputs("# ", stdout); |
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printargs(argc, argv, stdout); |
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fputc('\n', stdout); |
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+ |
|
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/* Dump common material def if constant for all photons, |
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i.e. independent of individual flux */ |
| 200 |
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if (!fluxCol) { |
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if (intens(customCol) > 0) |
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printf(radDefs [ptype].mat, |
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customCol [0], customCol [1], customCol [2]); |
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else |
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printf(radDefs [ptype].mat, colDefs [ptype][0], |
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colDefs [ptype][1], colDefs [ptype][2]); |
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fputc('\n', stdout); |
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+ |
} |
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|
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< |
/* Dump material def */ |
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< |
fputs(radDefs [ptype].mat, stdout); |
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< |
fputc('\n', stdout); |
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< |
|
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< |
/* Get number of photons (is this sizeof() hack portable?) */ |
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< |
numPhotons = getint(sizeof(((PhotonMap*)NULL) -> heapSize), pmapFile); |
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< |
|
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> |
/* Get number of photons */ |
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> |
pm.numPhotons = getint(sizeof(pm.numPhotons), pmapFile); |
| 212 |
> |
|
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/* Skip avg photon flux */ |
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for (j = 0; j < 3; j++) |
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getflt(pmapFile); |
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< |
|
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> |
|
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/* Get distribution extent (min & max photon positions) */ |
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for (j = 0; j < 3; j++) { |
| 219 |
< |
minPos [j] = getflt(pmapFile); |
| 220 |
< |
maxPos [j] = getflt(pmapFile); |
| 219 |
> |
pm.minPos [j] = getflt(pmapFile); |
| 220 |
> |
pm.maxPos [j] = getflt(pmapFile); |
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} |
| 222 |
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|
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/* Skip centre of gravity, and avg photon dist to it */ |
| 224 |
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for (j = 0; j < 4; j++) |
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getflt(pmapFile); |
| 226 |
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|
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< |
/* Sphere radius based on avg intersphere dist |
| 228 |
< |
(= sphere distrib density ^-1/3) */ |
| 229 |
< |
vol = (maxPos [0] - minPos [0]) * (maxPos [1] - minPos [1]) * |
| 230 |
< |
(maxPos [2] - 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 |
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|
| 242 |
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/* Photon dump probability to satisfy target sphere count */ |
| 243 |
< |
dumpRatio = numSpheres < numPhotons ? (float)numSpheres / numPhotons |
| 244 |
< |
: 1; |
| 243 |
> |
dumpRatio = numSpheres < pm.numPhotons |
| 244 |
> |
? (float)numSpheres / pm.numPhotons : 1; |
| 245 |
|
|
| 246 |
< |
while (numPhotons-- > 0) { |
| 247 |
< |
/* Get photon position */ |
| 246 |
> |
/* Skip primary rays */ |
| 247 |
> |
pm.numPrimary = getint(sizeof(pm.numPrimary), pmapFile); |
| 248 |
> |
while (pm.numPrimary-- > 0) { |
| 249 |
> |
/* Skip source index & incident dir */ |
| 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); |
| 259 |
> |
#endif |
| 260 |
> |
} |
| 261 |
> |
|
| 262 |
> |
#ifdef PMAP_OOC |
| 263 |
> |
/* Open leaf file with filename derived from pmap, replace pmapFile |
| 264 |
> |
* (which is currently the node file) */ |
| 265 |
> |
strncpy(leafFname, argv [arg], 1024); |
| 266 |
> |
strncat(leafFname, PMAP_OOC_LEAFSUFFIX, 1024); |
| 267 |
> |
fclose(pmapFile); |
| 268 |
> |
if (!(pmapFile = fopen(leafFname, "rb"))) { |
| 269 |
> |
sprintf(errmsg, "cannot open leaf file %s", leafFname); |
| 270 |
> |
error(SYSTEM, errmsg); |
| 271 |
> |
} |
| 272 |
> |
#endif |
| 273 |
> |
|
| 274 |
> |
/* Load photons */ |
| 275 |
> |
while (pm.numPhotons-- > 0) { |
| 276 |
> |
#ifdef PMAP_OOC |
| 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 /* kd-tree */ |
| 284 |
> |
/* Get photon position */ |
| 285 |
|
for (j = 0; j < 3; j++) |
| 286 |
|
p.pos [j] = getflt(pmapFile); |
| 287 |
|
|
| 288 |
< |
/* Dump photon probabilistically acc. to target sphere count */ |
| 186 |
< |
if (frandom() <= dumpRatio) { |
| 187 |
< |
printf(radDefs [ptype].obj, p.pos [0], p.pos [1], p.pos [2], rad); |
| 188 |
< |
fputc('\n', stdout); |
| 189 |
< |
} |
| 190 |
< |
|
| 191 |
< |
/* Skip photon normal and flux */ |
| 288 |
> |
/* Get photon normal (currently not used) */ |
| 289 |
|
for (j = 0; j < 3; j++) |
| 290 |
< |
getint(sizeof(p.norm [j]), pmapFile); |
| 194 |
< |
|
| 195 |
< |
#ifdef PMAP_FLOAT_FLUX |
| 196 |
< |
for (j = 0; j < 3; j++) |
| 197 |
< |
getflt(pmapFile); |
| 198 |
< |
#else |
| 199 |
< |
for (j = 0; j < 4; j++) |
| 200 |
< |
getint(1, pmapFile); |
| 201 |
< |
#endif |
| 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 |
+ |
p.flux [j] = getflt(pmapFile); |
| 296 |
+ |
#else |
| 297 |
+ |
for (j = 0; j < 4; j++) |
| 298 |
+ |
p.flux [j] = getint(1, pmapFile); |
| 299 |
+ |
#endif |
| 300 |
+ |
|
| 301 |
|
/* Skip primary ray index */ |
| 302 |
|
getint(sizeof(p.primary), pmapFile); |
| 303 |
|
|
| 304 |
|
/* Skip flags */ |
| 305 |
|
getint(sizeof(p.flags), pmapFile); |
| 306 |
< |
|
| 307 |
< |
if (feof(pmapFile)) { |
| 306 |
> |
#endif |
| 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); |
| 325 |
|
} |
| 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; |
