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RadiancePmap/pmapparm.c
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pmapparm.c
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#ifndef lint
static const char RCSid[] = "$Id: pmapparm.c,v 2.9 2018/02/02 19:47:55 rschregle Exp $";
#endif
/*
======================================================================
Parameters for photon map generation and rendering; used by mkpmap
and rpict/rvu/rtrace.
Roland Schregle (roland.schregle@{hslu.ch, gmail.com}
(c) Fraunhofer Institute for Solar Energy Systems,
supported by the German Research Foundation
(DFG LU-204/10-2, "Fassadenintegrierte Regelsysteme" (FARESYS))
(c) Lucerne University of Applied Sciences and Arts,
supported by the Swiss National Science Foundation
(SNSF #147053, "Daylight Redirecting Components",
SNSF #179067, "Light Fields for Spatio-Temporal Glare Assessment")
(c) Tokyo University of Science,
supported by the JSPS Grants-in-Aid for Scientific Research
(KAKENHI JP19KK0115, "Three-Dimensional Light Flow")
======================================================================
$Id: pmapparm.c,v 2.9 2018/02/02 19:47:55 rschregle Exp $
*/
#include "pmapparm.h"
#include "pmapdata.h"
#include <ctype.h>
float pdfSamples = 1000, /* PDF samples per steradian */
finalGather = 0.25, /* fraction of global photons for
irradiance precomputation */
preDistrib = 0.25, /* fraction of num photons for
distribution prepass */
gatherTolerance = 0.5, /* Photon map lookup tolerance;
lookups returning fewer than this
fraction of minGather/maxGather
are restarted with a larger
search radius */
maxDistFix = 0, /* Static maximum photon search
radius (radius is adaptive if
this is zero) */
compressRatio = 0.9, /* Compression ratio for precomputed
contribution photon map */
photonMaxPathDist = 0; /* Maximum cumulative distance of
photon path */
double photonVelocity = 299792458.0; /* Photon velocity in units of
scene geometry (default m/s) */
#ifdef PMAP_OOC
float pmapCachePageSize = 8; /* OOC cache pagesize as multiple
* of maxGather */
unsigned long pmapCacheSize = 1e6; /* OOC cache size in photons */
#endif
#ifdef PMAP_PHOTONFLOW
int sphericalIrrad = 0, /* Toggle for spherical / planar
irrad from lightflow pmap */
hemiLightFlow = 0; /* Toggle hemispherical/spherical
lookups for lightflow pmap */
#endif
/* Regions of interest */
unsigned pmapNumROI = 0;
PhotonMapROI *pmapROI = NULL;
unsigned verbose = 0; /* Verbose console output */
unsigned long photonMaxBounce = 5000; /* Runaway photon bounce limit */
unsigned photonRepTime = 0, /* Seconds between reports */
maxPreDistrib = 4, /* Max predistrib passes */
defaultGather = 40; /* Default num photons for lookup */
/* Per photon map lookup params */
PhotonMapParams pmapParams [NUM_PMAP_TYPES] = {
{NULL, 0, 0, 0, 0.}, {NULL, 0, 0, 0, 0.}, {NULL, 0, 0, 0, 0.},
{NULL, 0, 0, 0, 0.}, {NULL, 0, 0, 0, 0.}, {NULL, 0, 0, 0, 0.},
{NULL, 0, 0, 0, 0.}
#ifdef PMAP_PHOTONFLOW
, {NULL, 0, 0, 0}, {NULL, 0, 0, 0}
#endif
};
int setPmapParam (PhotonMap** pm, const PhotonMapParams* parm)
{
if (parm && parm -> fileName) {
if (!(*pm = (PhotonMap*)malloc(sizeof(PhotonMap))))
error(INTERNAL, "failed to allocate photon map");
(*pm) -> fileName = parm -> fileName;
(*pm) -> minGather = parm -> minGather;
(*pm) -> maxGather = parm -> maxGather;
(*pm) -> distribTarget = parm -> distribTarget;
(*pm) -> maxDist0 = FHUGE;
(*pm) -> contribTab = NULL;
(*pm) -> time = parm -> time;
return 1;
}
return 0;
}
unsigned long parseMultiplier (const char *num)
{
unsigned long mult = 1;
const int strEnd = strlen(num) - 1;
if (strEnd <= 0)
return 0;
if (!isdigit(num [strEnd]))
switch (toupper(num [strEnd])) {
case 'G':
mult *= 1000;
case 'M':
mult *= 1000;
case 'K':
mult *= 1000;
break;
default :
error(USER, "unknown multiplier");
}
return (unsigned long)(mult * atof(num));
}
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