1 package org.lcsim.recon.tracking.trfbase;
2
3 import org.lcsim.recon.tracking.trfbase.PropDir;
4 import org.lcsim.recon.tracking.trfbase.PropDirected;
5 import org.lcsim.recon.tracking.trfbase.PropStat;
6 import org.lcsim.recon.tracking.trfbase.Propagator;
7 import org.lcsim.recon.tracking.trfbase.Surface;
8 import org.lcsim.recon.tracking.trfbase.TrackDerivative;
9 import org.lcsim.recon.tracking.trfbase.TrackVector;
10 import org.lcsim.recon.tracking.trfbase.VTrack;
11
12 // Concrete subclass for testing PropDirected.
13
14 public class PropDirectedTest extends PropDirected
15 {
16
17 // static methods
18
19 // Return the type name.
20 public static String typeName()
21 { return "PropDirectedTest"; }
22
23 // Return the type.
24 public static String get_static_type()
25 { return typeName(); }
26
27 // methods
28
29 // implementation of the propagation
30 private PropStat
31 myprop(VTrack trv, Surface srf, PropDir dir)
32 {
33 trv.setSurface( srf.newPureSurface() );
34 PropStat pst = new PropStat();
35 TrackVector vec = trv.vector();
36 if ( dir.equals(PropDir.BACKWARD) )
37 {
38 vec.set(1, vec.get(1)-1.0);
39 pst.setForward();
40 }
41 else
42 {
43 vec.set(1, vec.get(1)+1.0);
44 pst.setBackward();
45 }
46 trv.setVector(vec);
47 return pst;
48 }
49
50 // methods
51
52 // Return the type.
53 public String get_type()
54 { return get_static_type(); };
55
56 // clone
57 public Propagator newPropagator()
58 { return new PropDirectedTest(); };
59
60 // propagate a track without error
61 public PropStat vecDirProp(VTrack trv, Surface srf,
62 PropDir dir, TrackDerivative deriv)
63 {
64 if ( deriv != null )
65 {
66
67 deriv.set(0,0 , 1.1);
68 deriv.set(1,1 , 1.2);
69 deriv.set(2,2 , 1.3);
70 deriv.set(3,3 , 1.4);
71 deriv.set(4,4 , 1.5);
72 }
73 return myprop(trv,srf,dir);
74 }
75
76
77 public String toString()
78 {
79 return "Test propagator" ;
80 }
81 }