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#ifndef lint |
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static const char RCSid[] = "$Id: pmaprand.c,v 2.3 2015/08/18 18:45:55 greg Exp $"; |
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#endif |
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|
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/* |
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================================================================== |
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Random number generators for photon distribution |
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|
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Roland Schregle (roland.schregle@{hslu.ch, gmail.com}) |
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(c) Fraunhofer Institute for Solar Energy Systems, |
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(c) Lucerne University of Applied Sciences and Arts, |
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supported by the Swiss National Science Foundation (SNSF, #147053) |
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================================================================== |
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|
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$Id: pmaprand.c,v 2.2 2015/05/08 13:20:23 rschregle Exp $ |
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*/ |
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|
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|
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|
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/* |
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Separate RNG states are used for the following variates during photon |
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distribution: |
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|
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- source partition |
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- emission direction |
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- emission counter fraction |
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- mean free distance in medium |
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- scattering direction |
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- russian roulette. |
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|
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Each photon map also has a local state randState used for distribRatio |
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during distribution and for bias compensation during gathering. |
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|
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The random seed randSeed can added to each initial state with pmapSeed() |
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so the RNGs can be externally seeded if necessary. |
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*/ |
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|
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unsigned short partState [3] = {47717, 5519, 21521}, |
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emitState [3] = {33997, 59693, 11003}, |
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cntState [3] = {17077, 4111, 48907}, |
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mediumState [3] = {25247, 7507, 33797}, |
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scatterState [3] = {21863, 45191, 5099}, |
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rouletteState [3] = {10243, 39829, 9433}, |
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randSeed = 0; |
