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/* |
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================================================================== |
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Parameters for photon map generation; used by MKPMAP |
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For inclusion in mkpmap.c |
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|
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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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|
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$Id: pmapparm.c,v 2.3 2015/05/26 12:32:21 rschregle Exp $ |
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*/ |
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|
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|
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#include "pmapparm.h" |
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#include "pmapdata.h" |
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#include "standard.h" |
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#include <ctype.h> |
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|
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|
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float pdfSamples = 1000, /* PDF samples per steradian */ |
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finalGather = 0.25, /* fraction of global photons for |
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irradiance precomputation */ |
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preDistrib = 0.25, /* fraction of num photons for |
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distribution prepass */ |
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gatherTolerance = 0.5, /* Photon map lookup tolerance; |
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lookups returning fewer than this |
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fraction of minGather/maxGather |
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are restarted with a larger |
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search radius */ |
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maxDistFix = 0; /* Static maximum photon search |
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radius (radius is adaptive if |
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this is zero) */ |
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|
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#ifdef PMAP_ROI |
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/* Region of interest bbox: {xmin, xmax, ymin, ymax, zmin, zmax} */ |
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float pmapROI [6] = {-FHUGE, FHUGE, -FHUGE, FHUGE, -FHUGE, FHUGE}; |
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#endif |
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|
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unsigned long photonHeapSizeInc = 1000, /* Photon heap size increment */ |
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photonMaxBounce = 5000; /* Runaway photon bounce limit */ |
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|
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unsigned photonRepTime = 0, /* Seconds between reports */ |
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maxPreDistrib = 4, /* Max predistrib passes */ |
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defaultGather = 40; /* Default num photons for lookup */ |
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|
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/* Per photon map params */ |
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PhotonMapParams pmapParams [NUM_PMAP_TYPES] = { |
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{NULL, 0, 0, 0}, {NULL, 0, 0, 0}, {NULL, 0, 0, 0}, {NULL, 0, 0, 0}, |
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{NULL, 0, 0, 0}, {NULL, 0, 0, 0} |
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}; |
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|
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|
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int setPmapParam (PhotonMap** pm, const PhotonMapParams* parm) |
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{ |
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if (parm && parm -> fileName) { |
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if (!(*pm = (PhotonMap*)malloc(sizeof(PhotonMap)))) |
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error(INTERNAL, "failed to allocate photon map"); |
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|
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(*pm) -> fileName = parm -> fileName; |
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(*pm) -> minGather = parm -> minGather; |
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(*pm) -> maxGather = parm -> maxGather; |
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(*pm) -> distribTarget = parm -> distribTarget; |
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(*pm) -> heapSizeInc = photonHeapSizeInc; |
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(*pm) -> maxDist0 = FHUGE; |
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(*pm) -> srcContrib = NULL; |
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|
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return 1; |
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} |
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|
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return 0; |
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} |
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|
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|
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unsigned long parseMultiplier (const char *num) |
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{ |
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unsigned long mult = 1; |
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const int strEnd = strlen(num) - 1; |
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|
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if (strEnd <= 0) |
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return 0; |
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|
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if (!isdigit(num [strEnd])) |
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switch (toupper(num [strEnd])) { |
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case 'G': mult *= 1000; |
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case 'M': mult *= 1000; |
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case 'K': mult *= 1000; |
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break; |
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default : error(USER, "unknown multiplier"); |
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} |
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|
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return (unsigned long)(mult * atof(num)); |
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} |
