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/* RCSid $Id: pmapparm.h,v 2.10 2021/04/14 11:26:25 rschregle Exp $ */
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/*
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======================================================================
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Parameters for photon map generation and rendering; used by mkpmap
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and rpict/rvu/rtrace.
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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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supported by the German Research Foundation
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(DFG LU-204/10-2, "Fassadenintegrierte Regelsysteme" (FARESYS))
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(c) Lucerne University of Applied Sciences and Arts,
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supported by the Swiss National Science Foundation
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(SNSF #147053, "Daylight Redirecting Components")
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======================================================================
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$Id: pmapparm.h,v 2.10 2021/04/14 11:26:25 rschregle Exp $
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*/
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#ifndef PMAPPARAMS_H
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#define PMAPPARAMS_H
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#include "pmaptype.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Struct for passing params per photon map from rpict/rtrace/rvu */
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typedef struct {
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char *fileName; /* Photon map file */
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unsigned minGather, maxGather; /* Num photons to gather */
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unsigned long distribTarget; /* Num photons to store */
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} PhotonMapParams;
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/* Region of interest */
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typedef struct {
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/* siz [1], siz [2] <= 0 --> sphere, else rectangle */
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float pos [3], siz [3];
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} PhotonMapROI;
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#define PMAP_ROI_ISSPHERE(roi) ((roi)->siz[1] <= 0 && (roi)->siz[2] <= 0)
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#define PMAP_ROI_SETSPHERE(roi) ((roi)->siz[1] = (roi)->siz[2] = -1)
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extern PhotonMapParams pmapParams [NUM_PMAP_TYPES];
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/* Macros for type specific photon map parameters */
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#define globalPmapParams (pmapParams [PMAP_TYPE_GLOBAL])
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#define preCompPmapParams (pmapParams [PMAP_TYPE_PRECOMP])
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#define causticPmapParams (pmapParams [PMAP_TYPE_CAUSTIC])
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#define volumePmapParams (pmapParams [PMAP_TYPE_VOLUME])
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#define directPmapParams (pmapParams [PMAP_TYPE_DIRECT])
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#define contribPmapParams (pmapParams [PMAP_TYPE_CONTRIB])
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extern float pdfSamples, preDistrib, finalGather,
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gatherTolerance, maxDistFix, pmapMaxDist,
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photonMaxDist;
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extern unsigned long photonHeapSizeInc, photonMaxBounce;
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extern unsigned photonRepTime, maxPreDistrib, defaultGather,
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verbose;
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extern unsigned pmapNumROI;
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extern PhotonMapROI *pmapROI;
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#ifdef PMAP_OOC
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extern float pmapCachePageSize;
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extern unsigned long pmapCacheSize;
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#endif
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struct PhotonMap;
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int setPmapParam (struct PhotonMap **pm, const PhotonMapParams *parm);
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/* Allocate photon map and set its parameters from parm */
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unsigned long parseMultiplier (const char *num);
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/* Evaluate numeric parameter string with optional multiplier suffix
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(G = 10^9, M = 10^6, K = 10^3). Returns 0 if parsing fails. */
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#ifdef __cplusplus
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}
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#endif
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#endif
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