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This commit is contained in:
Gabriele Cosmo
2017-06-30 10:49:55 +02:00
parent 3a5407696b
commit 1a1316fea4
2180 changed files with 237880 additions and 59109 deletions
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source/global/HEPRandom/include/G4RandomDirection.hh
+10 -1
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@@ -24,7 +24,7 @@
// ********************************************************************
//
//
// $Id: G4RandomDirection.hh 96120 2016-03-16 20:29:21Z gcosmo $
// $Id: G4RandomDirection.hh 103484 2017-04-11 08:31:44Z gcosmo $
//
//
// ------------------------------------------------------------
@@ -39,6 +39,7 @@
// providing more performant results.
// History:
// 06.04.17 E. Tcherniaev, added G4RandomDirection(cosTheta)
// 15.03.16 E. Tcherniaev, removed unnecessary if and unit()
// 18.03.08 V. Grichine, unit radius sphere surface based algorithm
// ~ 2007 M. Kossov, algorithm based on 8 Quadrants technique
@@ -61,4 +62,12 @@ inline G4ThreeVector G4RandomDirection()
return G4ThreeVector(rho*std::cos(phi), rho*std::sin(phi), z);
}
inline G4ThreeVector G4RandomDirection(G4double cosTheta)
{
G4double z = (1. - cosTheta)*G4UniformRand() + cosTheta;
G4double rho = std::sqrt((1.+z)*(1.-z));
G4double phi = CLHEP::twopi*G4UniformRand();
return G4ThreeVector(rho*std::cos(phi), rho*std::sin(phi), z);
}
#endif /* G4RANDOMDIR_HH */