1 package org.lcsim.recon.tracking.trfbase;
2 // SimInteractorTest
3 // A file to test the abstract SimInteractor class.
4 import org.lcsim.recon.tracking.trfbase.SimInteractor;
5 import org.lcsim.recon.tracking.trfbase.TrackVector;
6 import org.lcsim.recon.tracking.trfbase.VTrack;
7
8 public class SimInteractorTest extends SimInteractor
9 {
10
11 private double _radLength;
12 private double _mult;
13
14 // constructor
15 public SimInteractorTest( double radLength, double mult )
16 {
17 _radLength = radLength;
18 _mult = mult;
19 }
20
21 // method for changing the track:
22 public void interact( VTrack vtrk)
23 {
24 // the real test is statistical... so here, just change the
25 // track vector by a prescribed amount, and let a large data
26 // set determine whether the track modifications are in line
27 // with the covariance matrix modifications.
28 TrackVector trv = ( vtrk.vector() );
29 trv.set(0, trv.get(0) * _mult);
30 trv.set(1, trv.get(1) * _mult);
31 vtrk.setVectorAndKeepDirection( trv );
32 }
33
34 //return the number of radiation lengths:
35 public double get_rad_length()
36 {
37 return _radLength;
38 }
39
40 //make a clone
41 public SimInteractor newCopy()
42 {
43 return new SimInteractorTest(this._radLength, this._mult);
44 }
45
46 public String toString()
47 {
48 return "SimInteractorTest radlength= "+_radLength+" mult= "+_mult+"\n";
49 }
50
51 }
52
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58