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Fixed TGeoPGon::GetPhiCrossList for point on the Z axis. #484

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Fixed TGeoPGon::GetPhiCrossList for point on the Z axis. #484

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18ecdbd
Fixed TGeoPGon::GetPhiCrossList for point on the Z axis.
agheata Apr 6, 2017
b073643
Merge remote-tracking branch 'upstream/master'
agheata Apr 6, 2017
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Fixed TGeoPGon::GetPhiCrossList for point on the Z axis.
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@agheata
agheata committed Apr 6, 2017
commit 18ecdbdf8f1fb87415e508609f287bcba8cf9987
23 changes: 11 additions & 12 deletions geom/geom/src/TGeoPgon.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -540,24 +540,23 @@ Int_t TGeoPgon::GetPhiCrossList(const Double_t *point, const Double_t *dir, Int_
if (shootorig) {
Double_t rdotn = point[0]*dir[0]+point[1]*dir[1];
if (rdotn>0) {
sphi[icrossed] = stepmax;
iphi[icrossed++] = istart;
return icrossed;
sphi[0] = stepmax;
iphi[0] = istart;
return 1;
}
sphi[icrossed] = TMath::Sqrt((point[0]*point[0]+point[1]*point[1])/(1.-dir[2]*dir[2]));
iphi[icrossed++] = istart;
if (sphi[icrossed-1]>stepmax) {
sphi[icrossed-1] = stepmax;
return icrossed;
sphi[0] = TMath::Sqrt((point[0]*point[0]+point[1]*point[1])/(1.-dir[2]*dir[2]));
iphi[0] = istart;
if (sphi[0]>stepmax) {
sphi[0] = stepmax;
return 1;
}
phi = TMath::ATan2(dir[1], dir[0])*TMath::RadToDeg();
while (phi<fPhi1) phi+=360.;
istart = Int_t((phi-fPhi1)/divphi);
if (istart>fNedges-1) istart=-1;
iphi[icrossed] = istart;
sphi[icrossed] = stepmax;
icrossed++;
return icrossed;
iphi[0] = istart;
sphi[0] = stepmax;
return 1;
}
Int_t incsec = Int_t(TMath::Sign(1., point[0]*dir[1]-point[1]*dir[0]));
Int_t ist;
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