- gMC->TrackPosition(pos);
- gMC->TrackMomentum(mom);
- gMC->CurrentMaterial(a,z,dens,radl,absl);
-
- if (z < 1) return;
-
-// --- See if we have to stop now
- if (TMath::Abs(pos[2]) > fZMax ||
- pos[0]*pos[0] +pos[1]*pos[1] > fRadMax*fRadMax) {
- gMC->StopEvent();
- return;
- }
+
+ if (z < 1) return;
+
+ // --- See if we have to stop now
+ if (TMath::Abs(pos[2]) > fGener->ZMax() ||
+ pos[0]*pos[0] +pos[1]*pos[1] > fGener->RadMax()*fGener->RadMax()) {
+ if (!gMC->IsNewTrack()) {
+ // Not the first step, add past contribution
+ if (!fStopped) {
+ if (absl) fTotAbso += t/absl;
+ if (radl) fTotRadl += t/radl;
+ fTotGcm2 += t*dens;
+ }
+
+// printf("We will stop now %5d %13.3f !\n", fStopped, t);
+// printf("%13.3f %13.3f %13.3f %13.3f %13.3f %13.3f %13.3f %s %13.3f\n",
+// pos[2], TMath::Sqrt(pos[0] * pos[0] + pos[1] * pos[1]), step, a, z, radl, absl, gMC->CurrentVolName(), fTotRadl);
+ if (fDebug) {
+ //
+ // generate "mirror" particle flying back
+ //
+ fStepsBackward = fStepsForward;
+
+ Float_t pmom[3], orig[3];
+ Float_t polar[3] = {0.,0.,0.};
+ Int_t ntr;
+ pmom[0] = -dir[0];
+ pmom[1] = -dir[1];
+ pmom[2] = -dir[2];
+ orig[0] = vect[0];
+ orig[1] = vect[1];
+ orig[2] = vect[2];
+
+ gAlice->GetMCApp()->PushTrack(1, gAlice->GetMCApp()->GetCurrentTrackNumber(),
+ 0, pmom, orig, polar, 0., kPNoProcess, ntr);
+ } // debug
+
+ } // not a new track !
+
+ if (fDebug) fStepBack = 1;
+ fStopped = kTRUE;
+ gMC->StopTrack();
+ return;
+ } // outside scoring region ?
+
+ // --- See how long we have to go
+ for(i=0;i<3;++i) {
+ vect[i]=pos[i];
+ dir[i]=mom[i];
+ }
+
+ t = fGener->PropagateCylinder(vect,dir,fGener->RadMax(),fGener->ZMax());
+
+ if(step) {
+
+ if (absl) fTotAbso += step/absl;
+ if (radl) fTotRadl += step/radl;
+ fTotGcm2 += step*dens;
+// printf("%13.3f %13.3f %13.3f %13.3f %13.3f %13.3f %13.3f %s %13.3f\n",
+// pos[2], TMath::Sqrt(pos[0] * pos[0] + pos[1] * pos[1]), step, a, z, radl, absl, gMC->CurrentVolName(), fTotRadl);
+ }