]>
Commit | Line | Data |
---|---|---|
3010c308 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
d3da6dc4 | 18 | #include "AliHMPIDHelix.h" //class header |
19 | #include <TPolyLine3D.h> //Draw() | |
20 | ||
21 | ClassImp(AliHMPIDHelix) | |
22 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
23 | void AliHMPIDHelix::Print(Option_t *opt) const | |
24 | { | |
25 | // Debug printout | |
26 | Printf("%s helix for Q=%i in B=(0,0,%.2f) tesla",opt,fQ,fBz); | |
27 | Printf("Helix parametrised @ x0=(%6.2f,%6.2f,%6.2f) cm p0=(%6.2f,%6.2f,%6.2f) GeV P=%.2f GeV Theta=%.2f Phi=%.2f degrees", | |
28 | fX0.X(),fX0.Y(),fX0.Z(), fP0.Px(),fP0.Py(),fP0.Pz(), fP0.Mag(),fP0.Theta()*TMath::RadToDeg(),fP0.Phi()*TMath::RadToDeg()); | |
29 | } | |
30 | //++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ | |
31 | void AliHMPIDHelix::Draw(const Option_t *) | |
32 | { | |
33 | // Draw helix by a set of points seperated by 1 cm distance | |
34 | TVector3 pos,mom; | |
35 | const Int_t kNpoints=500; | |
36 | TPolyLine3D *pHelDraw = new TPolyLine3D(kNpoints); pHelDraw->SetLineColor(kGreen); | |
37 | for(Int_t i=0;i<kNpoints;i++) { | |
38 | Propagate(i,pos,mom); | |
39 | pHelDraw->SetPoint(i,pos.X(),pos.Y(),pos.Z()); | |
40 | } | |
41 | pHelDraw->Draw(); | |
42 | } |