1 package org.lcsim.event;
2
3 import hep.physics.matrix.SymmetricMatrix;
4 import hep.physics.vec.Hep3Vector;
5 import java.util.Map;
6
7 /**
8 * A representation of a vertex
9 * @author tonyj
10 */
11 public interface Vertex
12 {
13 /** Checks if the Vertex is the primary vertex of the event.
14 * Only one primary vertex per event is allowed
15 */
16 boolean isPrimary();
17
18 /** Type code for the algorithm that has been used to create the vertex - check/set the
19 * collection parameters AlgorithmName and AlgorithmType.
20 */
21 String getAlgorithmType();
22
23 /** Chi squared of the vertex fit.
24 */
25 double getChi2();
26
27 /** Probability of the vertex fit.
28 */
29 double getProbability();
30
31 /** Position of the vertex
32 */
33 Hep3Vector getPosition();
34
35 /** Covariance matrix of the position
36 */
37 SymmetricMatrix getCovMatrix();
38
39 /** Additional parameters related to this vertex.
40 */
41 Map<String,Double> getParameters();
42
43 /** Returns Reconstructed Particle associated to the Vertex
44 */
45 ReconstructedParticle getAssociatedParticle();
46 }