RadiancePmap/pmutil.h
6748897025c7fixSpecular

pmutil.h
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			/* RCSid $Id$ */

			/*
			======================================================================
			Auxiliary photon map utilities; stuff that doesn't fit anywhere else!

			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")
			======================================================================

			$Id$
			*/


			#ifndef _PMAP_UTIL_H
			#define _PMAP_UTIL_H

			#include "pmapdata.h"


			#ifndef min
			#define min(a, b) ((a) < (b) ? (a) : (b))
			#endif

			#ifndef max
			#define max(a, b) ((a) > (b) ? (a) : (b))
			#endif

			#define sqr(a) ((a) * (a))

			/* Average over colour channels */
			#define colorAvg(col) (((col) [0] + (col) [1] + (col) [2]) / 3)

			/* Photon distribution counter update interval expressed as bitmask;
			counters shared among subling subprocesses will only be updated
			in multiples of PMAP_CNTUPDATE in order to reduce contention */
			#define PMAP_CNTUPDATE 0xffL


			void colorNorm (COLOR c);
			/* Normalise colour channels to average of 1 */

			void cleanUpPmaps (PhotonMap **pmaps);
			/* Wrapper to delete all photon maps */
			#endif