Author: mgraham
Date: Thu Oct 30 08:16:13 2014
New Revision: 1342
Log:
Straight track fitting
Added:
java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrack2DFitter.java
java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackConfirmerExtender.java
java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackFitter.java
java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackReconDriver.java
- copied, changed from r1321, java/trunk/tracking/src/main/java/org/hps/recon/tracking/TrackerReconDriver.java
java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTracker.java
Removed:
java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/HitOnTrackChecker.java
java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrack.java
java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/TrackChecker.java
java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/TrackCollectionUtilities.java
Modified:
java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackFinder.java
Added: java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrack2DFitter.java
=============================================================================
--- java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrack2DFitter.java (added)
+++ java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrack2DFitter.java Thu Oct 30 08:16:13 2014
@@ -0,0 +1,131 @@
+package org.hps.recon.tracking.nobfield;
+
+import hep.physics.matrix.SymmetricMatrix;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import org.lcsim.fit.helicaltrack.HelicalTrackFit;
+import org.lcsim.fit.helicaltrack.HelicalTrackHit;
+import org.lcsim.fit.helicaltrack.HitUtils;
+import org.lcsim.fit.helicaltrack.MultipleScatter;
+import org.lcsim.fit.line.SlopeInterceptLineFit;
+import org.lcsim.fit.line.SlopeInterceptLineFitter;
+
+/**
+ *
+ * @author mgraham
+ */
+public class StraightTrack2DFitter {
+
+ SlopeInterceptLineFitter _lfitter = new SlopeInterceptLineFitter();
+ HelicalTrackFit _fit;
+
+ /**
+ * Status of the HelicalTrackFit.
+ */
+ public enum FitStatus {
+
+ /**
+ * Successful Fit.
+ */
+ Success,
+ /**
+ * Inconsistent seed hits
+ */
+ InconsistentSeed,
+ /**
+ * s-z line fit failed.
+ */
+ SZLineFitFailed,
+ /**
+ * ZSegmentFit failed.
+ */
+ XYLineFitFailed
+ };
+
+ public void StraightTrack2DFitter() {
+
+ }
+
+ public FitStatus fit(List<HelicalTrackHit> hits) {
+ Map<HelicalTrackHit, MultipleScatter> msmap = new HashMap<HelicalTrackHit, MultipleScatter>();
+ return fit(hits, msmap, null);
+ }
+
+ public FitStatus fit(List<HelicalTrackHit> hits, Map<HelicalTrackHit, MultipleScatter> msmap, HelicalTrackFit oldfit) {
+ // Check that we have at least 3 hits
+ boolean success = false;
+ int nhit = hits.size();
+ if (nhit < 3)
+ return FitStatus.InconsistentSeed;
+
+ // Create the objects that will hold the fit output
+ double[] chisq = new double[2];
+ int[] ndof = new int[2];
+ double[] par = new double[5];
+ SymmetricMatrix cov = new SymmetricMatrix(5);
+
+ // Setup for the line fit
+ double[] s = new double[nhit];
+ double[] z = new double[nhit];
+ double[] y = new double[nhit];
+ double[] x = new double[nhit];
+ double[] dz = new double[nhit];
+ double[] dy = new double[nhit];
+ Map<HelicalTrackHit, Double> smap = new HashMap<>();
+
+ // Store the coordinates and errors for the XY line fit
+ for (int i = 0; i < nhit; i++) {
+ HelicalTrackHit hit = hits.get(i);
+ y[i] = hit.y();
+ dy[i] = HitUtils.zres(hit, msmap, oldfit);
+ double drphi_ms = 0;
+ if (msmap.containsKey(hit))
+ drphi_ms = msmap.get(hit).drphi();
+ double dyHitSq = hit.getCorrectedCovMatrix().e(1, 1);
+ dy[i] = Math.sqrt(dyHitSq + drphi_ms * drphi_ms);
+ x[i] = hit.x();
+ }
+ // Call the line fitter and check for success
+ success = _lfitter.fit(x, y, dy, nhit);
+ if (!success)
+ return FitStatus.XYLineFitFailed;
+ SlopeInterceptLineFit xyFit = _lfitter.getFit();
+ par[0] = xyFit.intercept();
+ par[1] = xyFit.slope();
+ cov.setElement(0, 0, Math.pow(xyFit.interceptUncertainty(), 2));
+ cov.setElement(1, 1, Math.pow(xyFit.slopeUncertainty(), 2));
+ cov.setElement(0, 1, Math.pow(xyFit.covariance(), 2));
+ chisq[0] = xyFit.chisquared();
+ ndof[0] = xyFit.ndf();
+ // Store the coordinates and errors for the SZ line fit
+ for (int i = 0; i < nhit; i++) {
+ HelicalTrackHit hit = hits.get(i);
+ z[i] = hit.z();
+ dz[i] = HitUtils.zres(hit, msmap, oldfit); //MG this works even in msmap is null
+ s[i] = Math.sqrt(hit.x() * hit.x() + hit.y() * hit.y());
+ smap.put(hit, s[i]);
+ }
+ // Call the line fitter and check for success
+ success = _lfitter.fit(s, z, dz, nhit);
+ if (!success)
+ return FitStatus.SZLineFitFailed;
+ SlopeInterceptLineFit szFit = _lfitter.getFit();
+ par[3] = szFit.intercept();
+ par[4] = szFit.slope();
+ cov.setElement(3, 3, Math.pow(szFit.interceptUncertainty(), 2));
+ cov.setElement(4, 4, Math.pow(szFit.slopeUncertainty(), 2));
+ cov.setElement(3, 4, Math.pow(szFit.covariance(), 2));
+ chisq[1] = szFit.chisquared();
+ ndof[1] = szFit.ndf();
+ par[2] = 1e-50;
+ // Create the HelicalTrackFit for this helix
+ _fit = new HelicalTrackFit(par, cov, chisq, ndof, smap, msmap);
+ return FitStatus.Success;
+ }
+
+ public HelicalTrackFit getFit() {
+ return _fit;
+ }
+
+}
Added: java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackConfirmerExtender.java
=============================================================================
--- java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackConfirmerExtender.java (added)
+++ java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackConfirmerExtender.java Thu Oct 30 08:16:13 2014
@@ -0,0 +1,356 @@
+/*
+ * StraightTrackConfirmerExtender.java
+ */
+package org.hps.recon.tracking.nobfield;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import org.lcsim.fit.helicaltrack.HelicalTrackFit;
+import org.lcsim.fit.helicaltrack.HelicalTrackHit;
+import org.lcsim.recon.tracking.seedtracker.HitManager;
+import org.lcsim.recon.tracking.seedtracker.MergeSeedLists;
+import org.lcsim.recon.tracking.seedtracker.SeedCandidate;
+import org.lcsim.recon.tracking.seedtracker.SeedLayer;
+import org.lcsim.recon.tracking.seedtracker.SeedStrategy;
+import org.lcsim.recon.tracking.seedtracker.SortHits;
+import org.lcsim.recon.tracking.seedtracker.SortLayers;
+import org.lcsim.recon.tracking.seedtracker.diagnostic.ISeedTrackerDiagnostics;
+
+/**
+ * The StraightTrackConfirmerExtender class attempts to add hits to an input seed. While the
+ * algorithms used for the confirm and extend phases are identical, there are
+ * small differences in procedures when there are no more tracker layers to check.
+ * The confirm phase simply outputs a list of SeedCandidates that have at least
+ * the minimum number of confirm hits added to the track. The extend phases
+ * completes track finding and imposes the merge criteria to eliminate inferior
+ * track candidates when a pair of candidates shares more than one hit.
+ *
+ * @author cozzy, Richard Partridge
+ * Modified for HPS straight track fitting by Matt Graham 10/29/2014
+ */
+public class StraightTrackConfirmerExtender {
+
+ public enum Task {
+
+ CONFIRM,
+ EXTEND;
+ }
+ private int _nfit;
+ private int _maxfit = 1000000000; // initialize maximum number of fits to 10^9
+ private HitManager _hmanager;
+ private StraightTrackFitter _fitter;
+ private MergeSeedLists _merger;
+ private List<SeedCandidate> _result;
+ private ISeedTrackerDiagnostics _diag = null;
+
+
+ /**
+ * Constructor for the ConfirmerExtender class.
+ *
+ * @param hitmanager hit manager that provides access to hits sorted by layer / sector
+ * @param helixfitter helix fitter
+ */
+ public StraightTrackConfirmerExtender(HitManager hitmanager, StraightTrackFitter helixfitter) {
+
+ _hmanager = hitmanager;
+ _fitter = helixfitter;
+ _merger = new MergeSeedLists();
+ }
+
+ /**
+ * Retrieves the result of the confirmation or extension.
+ *
+ * @return result The list of confirmed/extended seeds..
+ */
+ public List<SeedCandidate> getResult() {
+
+ return _result;
+ }
+ /**
+ * Set the maximum number of fit trials for a given seed to be confirmed/extended.
+ *
+ * @param maxfit maximum number of trials
+ */
+ public void setMaxFit(int maxfit) {
+ _maxfit = maxfit;
+ }
+
+ /**
+ * Get the number of fit trials for the last confirm/extend.
+ *
+ * @return number of helix fits
+ */
+ public int getNFit() {
+ return _nfit;
+ }
+
+ /**
+ * Set the diagnostic class to be used (null for no diagnostics).
+ *
+ * @param d diagnostic class
+ */
+ public void setDiagnostics(ISeedTrackerDiagnostics d) {
+ _diag = d;
+ _merger.setDiagnostic(_diag);
+ }
+
+ /**
+ * Try to confirm a seed using a specified strategy. The strategy specifies
+ * the layers to use in trying to confirm the seed as well as the minimum number
+ * of confirm layers that were added to the seed. Typically, there will be a
+ * single confirm layer that is required for a seed to be confirmed. Confirmed
+ * seeds must also pass the chisq cut and other constraints specified in the strategy.
+ *
+ * @param seed seed to be confirmed
+ * @param strategy strategy to use for confirming this seed
+ * @param bfield magnetic field
+ * @return true if seed was confirmed
+ */
+ public boolean Confirm(SeedCandidate seed, SeedStrategy strategy, double bfield) {
+
+ // Create a list to hold the confirmed / extended seeds
+ _result = new ArrayList<SeedCandidate>();
+
+ // Establish which layers are to be checked
+ seed.setUncheckedLayers(strategy.getLayers(SeedLayer.SeedType.Confirm));
+
+ // Process the seed
+ doTask(seed, Task.CONFIRM, strategy, bfield);
+
+ // Return true if we found at least one confirming seed candidate
+ return _result.size() > 0;
+ }
+
+ /**
+ * Try to extend a seed using a specified strategy. The strategy specifies
+ * the layers to use in extending the seed as well as the minimum number of
+ * layers required for a seed to be a track candidate. Any track candidates
+ * found as a result of the extend operation are merged with the list of
+ * track candidates found so far to eliminate inferior fits when a pair of
+ * track candidates shares more than one hit.
+ *
+ * @param seed seed to be extended
+ * @param strategy strategy to use
+ * @param bfield magnetic field
+ * @param foundseeds list of track candidates found so far
+ */
+ public void Extend(SeedCandidate seed, SeedStrategy strategy, double bfield,
+ List<SeedCandidate> foundseeds) {
+
+ // Initialize the list of extended seed candidates to those already found
+ _result = foundseeds;
+
+ // Establish which layers are to be checked
+ seed.setUncheckedLayers(strategy.getLayers(SeedLayer.SeedType.Extend));
+
+ // Extend the seed and return
+ doTask(seed, Task.EXTEND, strategy, bfield);
+ return;
+ }
+
+ /**
+ * Perform the confirm or extend step.
+ *
+ * @param inputseed seed to be confirmed/extended
+ * @param task confirm or extend (enum)
+ * @param strategy strategy to use
+ * @param bfield magnetic field
+ */
+ private void doTask(SeedCandidate inputseed, Task task, SeedStrategy strategy, double bfield) {
+
+ // Initialize the counter for the number of fits performed on this seed
+ _nfit = 0;
+
+// // Instantiate the fast hit checker
+// FastCheck checker = new FastCheck(strategy, bfield, _diag);
+// if(this._applySectorBinning) checker.setDoSectorBinCheck(this._hmanager.getSectorManager());
+
+ // Calculate the minimum number of hits to succeed, retrieve the chisq cuts
+ int minhits = strategy.getMinHits();
+ if (task == Task.CONFIRM) minhits = strategy.getMinConfirm() + 3;
+ double badhitchisq = strategy.getBadHitChisq();
+ double maxchisq = strategy.getMaxChisq();
+
+ // Create a LIFO queue of seeds to be searched for a confirmation/extension
+ // hit (note that a LIFO queue is used to minimize memory usage)
+ LinkedList<SeedCandidate> seedlist = new LinkedList<SeedCandidate>();
+
+ // The bestseed is a SeedCandidate the meets the requirements for becoming
+ // a track, shares at least one hit with the inputseed, and has been deemed
+ // the best such seed by the track merging criteria
+ //
+ // Initialize the best seed to null
+ SeedCandidate bestseed = null;
+
+ // If we have already found track candidates, check for duplicates
+ // that share hits with the seed, finding the best such duplicate candidate.
+ for (SeedCandidate trkcand : _result) {
+ if (_merger.isDuplicate(inputseed, trkcand))
+ bestseed = findBestCandidate(trkcand, bestseed, strategy);
+ }
+
+ // Create a map between the SeedLayers to be checked and a list of hits on the layer to check
+ Map<SeedLayer, List<HelicalTrackHit>> hitmap = new HashMap<SeedLayer, List<HelicalTrackHit>>();
+
+ // Loop over the layers to be checked
+ for (SeedLayer lyr : inputseed.getUncheckedLayers()) {
+
+ hitmap.put(lyr, _hmanager.getTrackerHits(lyr));
+ }
+
+ // Create a list of layers that have hits to check
+ List<SeedLayer> lyrlist = new ArrayList<SeedLayer>();
+ lyrlist.addAll(hitmap.keySet());
+
+ // Sort the layers in order of increasing number of hits
+ SortLayers lyrsort = new SortLayers(hitmap);
+ Collections.sort(lyrlist, lyrsort);
+
+ // Store the layers to check in the seed
+ inputseed.setUncheckedLayers(lyrlist);
+
+ // Start with the input seed
+ seedlist.add(inputseed);
+
+ // Keep looping until we have fully processed all seed candidates
+ while (seedlist.size() > 0) {
+
+ // If we have exceeded the maximum number of fits, print warning and stop processing seed candidates
+ if (_nfit > _maxfit) {
+ System.out.println("Maximum number of fits exceeded in "+task.toString()+" step");
+ if (bestseed == null) {
+ System.out.println("No track candidates are associated with the seed hits");
+ } else {
+ System.out.println("Track candidate with "+bestseed.getHits().size()+
+ " hits and chisq of "+bestseed.getHelix().chisqtot()+
+ " associated with the seed hits");
+ }
+ break;
+ }
+
+ // Pull the last seed off the queue (use a LIFO queue to minimize queue length)
+ SeedCandidate seed = seedlist.poll();
+
+ // Check if there are enough unchecked layers to meet the minimum number of hits
+ int lyrsleft = seed.getUncheckedLayers().size();
+ int possiblehits = lyrsleft + seed.getHits().size();
+ if (possiblehits < minhits) continue;
+
+ // If there is a best fit candidate, see if there is still a chance of beating it
+ if (bestseed != null) {
+
+ // If the maximimum hits we can achieve is >1 fewer than the best fit, skip this candidate
+ int besthits = bestseed.getHits().size();
+ if (possiblehits < besthits - 1) continue;
+
+ // If the maximum hits we can achieve equals the best fit, skip if we have a worse chi2
+ double chisq = seed.getHelix().chisqtot();
+ double bestchisq = seed.getHelix().chisqtot();
+ if ((possiblehits == besthits) && chisq > bestchisq) continue;
+
+ // If the maximum hits we can achieve is 1 fewer than the best fit, skip if the bad hit criteria can't be met
+ if ((possiblehits == besthits - 1) && (chisq > bestchisq - badhitchisq)) continue;
+ }
+
+ // See if there are any layers left for confirm/extend
+ if (lyrsleft == 0) {
+
+ // Take final action on this seed
+ if (task == Task.CONFIRM) {
+
+ // No more layers and min hit requirement is met, seed is confirmed
+ _result.add(seed);
+
+ } else if (task == Task.EXTEND) {
+
+ // Merge the seed into the list of extended seeds
+ boolean merged = _merger.Merge(_result, seed, strategy);
+
+ // If the seed survived the merge, make it our new best candidate
+ if (merged) bestseed = findBestCandidate(seed, bestseed, strategy);
+ }
+
+ // Done with this seed
+ continue;
+ }
+
+ // Pull the next layer off the queue
+ SeedLayer lyr = seed.getNextLayer();
+ HelicalTrackFit helix = seed.getHelix();
+
+ // Retrieve the chisq for the last fit and initialize the best fit chisq for this layer
+ double oldchisq = helix.chisqtot();
+ double oldcirclechisq = helix.chisq()[0];
+ double chisqbest = 1.e99;
+
+ // Get the list of hits to check for this layer and sort them by x-y distance from current helix
+ List<HelicalTrackHit> hitlist = hitmap.get(lyr);
+ SortHits comp = new SortHits(helix);
+ Collections.sort(hitlist, comp);
+
+ // Loop over the sorted hits in this layer
+ for (HelicalTrackHit hit : hitlist) {
+
+ // Make a test seed including the new hit
+ SeedCandidate test = new SeedCandidate(seed);
+ test.addHit(hit);
+
+// // Check that this hit is potentially viable
+// if (!checker.CheckHitSeed(hit, seed)) {
+// if (_diag != null) _diag.fireCheckHitFailed(hit, test);
+// continue;
+// }
+
+ // Fit the test seed
+ boolean success = _fitter.FitCandidate(test, strategy);
+ _nfit++;
+
+
+ // Check if the fit was successful
+ if (success) {
+
+ // Success - attach the fit to the test seed
+ HelicalTrackFit newhelix = _fitter.getHelix();
+ test.setHelix(newhelix);
+
+ // Add the seed to the LIFO queue of seed candidates and update the best chisq
+ seedlist.addFirst(test);
+ chisqbest = Math.min(chisqbest, newhelix.chisqtot());
+
+ }
+ }
+
+ // Finished checking hits in the current layer. If all the fit trials for
+ // this layer are potentially bad hits, include the starting seed (less the
+ // current layer, which was popped off the layer queue) in the seed list.
+ if (chisqbest - oldchisq > strategy.getBadHitChisq()) seedlist.addFirst(seed);
+ }
+
+ // Finished looping over the seeds in the LIFO candidate queue - we are done!
+ return;
+ }
+
+ /**
+ * Check two track candidates and return the best one subject to the merging criteria.
+ *
+ * @param trial new candidate to try
+ * @param oldbest previous best candidate (or null if no best candidate has been found)
+ * @param strategy strategy in use
+ * @return best track candidate
+ */
+ private SeedCandidate findBestCandidate(SeedCandidate trial, SeedCandidate oldbest, SeedStrategy strategy) {
+
+ // If the old best candidate is null, return the trial candidate
+ if (oldbest == null) return trial;
+
+ // If the trial candidate is better, return it
+ if (_merger.isBetter(trial, oldbest, strategy)) return trial;
+
+ // If no improvement, return the old candidate
+ return oldbest;
+ }
+}
Modified: java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackFinder.java
=============================================================================
--- java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackFinder.java (original)
+++ java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackFinder.java Thu Oct 30 08:16:13 2014
@@ -1,272 +1,252 @@
+/*
+ * SeedTrackFinder.java
+ *
+ * Created on January 22, 2008, 9:39 AM
+ *
+ */
package org.hps.recon.tracking.nobfield;
import java.util.ArrayList;
+import java.util.HashSet;
import java.util.List;
-import org.hps.recon.tracking.HitCollectionUtilites;
-import org.hps.recon.tracking.nobfield.TrackCollectionUtilities;
-import org.lcsim.event.EventHeader;
-import org.lcsim.event.Track;
-import org.lcsim.event.TrackerHit;
+import java.util.Set;
+import org.lcsim.event.MCParticle;
import org.lcsim.fit.helicaltrack.HelicalTrackHit;
-import org.lcsim.fit.line.SlopeInterceptLineFit;
-import org.lcsim.fit.line.SlopeInterceptLineFitter;
-import org.lcsim.geometry.Detector;
-import org.lcsim.util.Driver;
+import org.lcsim.recon.tracking.seedtracker.HitManager;
+import org.lcsim.recon.tracking.seedtracker.SeedCandidate;
+import org.lcsim.recon.tracking.seedtracker.SeedLayer;
+import org.lcsim.recon.tracking.seedtracker.SeedStrategy;
+import org.lcsim.recon.tracking.seedtracker.TrackCheck;
+import org.lcsim.recon.tracking.seedtracker.diagnostic.ISeedTrackerDiagnostics;
/**
*
- * @author mgraham
+ * @author Richard Partridge
+ * @version 1.0
*/
-public class StraightTrackFinder extends Driver {
-
- // Debug flag.
- private boolean debug = true;
- // Tracks found across all events.
- int ntracks = 0;
- // Number of events processed.
- int nevents = 0;
- // Cache detector object.
- Detector detector = null;
- // Tracking strategies resource path.
- private String strategyResource = "HPS-Test-4pt1.xml";
- // Output track collection.
- private String trackCollectionName = "StraightTracks";
- // HelicalTrackHit input collection.
- private String stInputCollectionName = "HelicalTrackHits";
- // Include MS (done by removing XPlanes from the material manager results)
- private boolean includeMS = true;
- // number of repetitive fits on confirmed/extended tracks
- private int _iterativeConfirmed = 3;
- // use HPS implementation of material manager
- private boolean _useHPSMaterialManager = true;
-
- private TrackChecker checkerTrack = new TrackChecker();
- private HitOnTrackChecker checkerHOT = new HitOnTrackChecker();
-
- private SlopeInterceptLineFitter _lfitter = new SlopeInterceptLineFitter();
-
- public void setDebug(boolean debug) {
- this.debug = debug;
- }
-
- /**
- * Set the tracking strategy resource.
- *
- * @param strategyResource The absolute path to the strategy resource in the
- * hps-java jar.
- */
- public void setStrategyResource(String strategyResource) {
- this.strategyResource = strategyResource;
- }
-
- public void setInputHitCollectionName(String inputHitCollectionName) {
- this.stInputCollectionName = inputHitCollectionName;
- }
-
- public void setTrackCollectionName(String trackCollectionName) {
- this.trackCollectionName = trackCollectionName;
- }
-
- public void setIncludeMS(boolean incMS) {
- this.includeMS = incMS;
- }
-
- /**
- * Set to enable the use of the HPS material manager implementation
- *
- * @param useHPSMaterialManager switch
- */
- public void setUseHPSMaterialManager(boolean useHPSMaterialManager) {
- this._useHPSMaterialManager = useHPSMaterialManager;
- }
-
- @Override
- public void detectorChanged(Detector detector) {
- // Cache Detector object.
- this.detector = detector;
-// initialize();
- super.detectorChanged(detector);
- }
-
- @Override
- public void process(EventHeader event) {
- if (!event.hasCollection(HelicalTrackHit.class, stInputCollectionName))
- return;
-
- List<HelicalTrackHit> allHits = event.get(HelicalTrackHit.class, stInputCollectionName);
-
- List<List<HelicalTrackHit>> splitTopBot = HitCollectionUtilites.SplitTopBottomHits(allHits);
- // will always have top(=0) and bottom(=1) lists (though they may be empty)
- List<HelicalTrackHit> topHits = splitTopBot.get(0);
- List<HelicalTrackHit> bottomHits = splitTopBot.get(1);
- //a simple strategy...eventually implement SeedTracker strategies?
- int nTotLayers = 6;
- int nSeed = 3;
- int nExtra = nTotLayers - nSeed;
- int[] seedStrategy = {1, 3, 5};
- int[] extendStrategy = {7, 9, 11};
- int minHits = 4;
-
- TrackChecker checkerTrack = new TrackChecker();
- HitOnTrackChecker checkerHOT = new HitOnTrackChecker();
-
-// List<StraightTrack> seeds = getSeeds(seedStrategy, topHits);
- List<StraightTrack> seeds = getSeeds(seedStrategy, allHits);
- System.out.println("Found " + seeds.size() + " seeds");
-
- List<StraightTrack> extendedSeeds = new ArrayList<>();
- for (StraightTrack seed : seeds)
- extendTrack(extendStrategy, 0, seed, allHits, extendedSeeds);
-// extendTrack(extendStrategy, 0, seed, topHits, extendedSeeds);
-
- System.out.println("Prepruning :Found " + extendedSeeds.size() + " extended seeds");
-
- //remove tracks with more than m overlaping hits...pick best chi2
- //...
- List<StraightTrack> finalTracks = new ArrayList<>();
- for (StraightTrack track : extendedSeeds) {
- boolean isbest = TrackCollectionUtilities.pruneTrackList((ArrayList<Track>) (ArrayList) extendedSeeds, track, 1);
- if (isbest)
- finalTracks.add(track);
- }
-
- System.out.println("Postpruning :Found " + finalTracks.size() + " extended seeds");
- event.put(trackCollectionName, finalTracks);
- }
-
- public SlopeInterceptLineFit FitToLine(List<HelicalTrackHit> hits, int projection) {
- SlopeInterceptLineFit _lfit;
- int npix = hits.size();
- double[] s = new double[npix];
- double[] q = new double[npix];
- double[] dq = new double[npix];
-
- // Store the coordinates and errors for the line fit
- for (int i = 0; i < npix; i++) {
- HelicalTrackHit hit = hits.get(i);
- s[i] = hit.z();//probably isn't quite right...track length is not z
- if (projection == 0) { //do x vs z;
- q[i] = hit.x();
- dq[i] = Math.sqrt(hit.getCorrectedCovMatrix().e(0, 0));
- } else {
- q[i] = hit.y();
- dq[i] = Math.sqrt(hit.getCorrectedCovMatrix().e(1, 1));
- }
- }
-
- // Call the line fitter and check for success
- boolean success = _lfitter.fit(s, q, dq, npix);
-
- if (!success)
- System.out.println("Something is broken in the line fit");
- // Save the line fit, chi^2, and DOF
- _lfit = _lfitter.getFit();
- return _lfit;
-
- }
-
- private StraightTrack makeTrack(List<HelicalTrackHit> hits, SlopeInterceptLineFit xfit, SlopeInterceptLineFit yfit) {
- StraightTrack track = new StraightTrack();
- double[] pars = {-99, -99, -99, -99, -99};//this needs to have 5 fields to implement Track
- pars[0] = xfit.intercept();
- pars[1] = xfit.slope();
- pars[2] = yfit.intercept();
- pars[3] = yfit.slope();
- track.setTrackParameters(pars);
- track.setChi2(xfit.chisquared(), yfit.chisquared());
- track.setNDF(xfit.ndf()+yfit.ndf());
- for (TrackerHit hit : hits)
- track.addHit(hit);
- // TODO: set convariance,
- return track;
- }
-
- private StraightTrack makeTrack(List<HelicalTrackHit> hits) {
- SlopeInterceptLineFit xfit = FitToLine(hits, 0);
- SlopeInterceptLineFit yfit = FitToLine(hits, 1);
- if (debug)
- System.out.println("xfit = " + xfit.toString());
- if (debug)
- System.out.println("yfit = " + yfit.toString());
- return makeTrack(hits, xfit, yfit);
- }
-
- /*
- * Get all seed combinations that make sense (pass checkSeed)
- * currently, just assume there are 3 seed layers (don't have to be first 3 though.
- */
- private List<StraightTrack> getSeeds(int[] seedLayers, List<HelicalTrackHit> hits) {
- List<StraightTrack> seeds = new ArrayList<>();
- int nseeds = seedLayers.length;
- if (nseeds == 3)//TODO ... set this up so that this works for arbitrary nseeds...use recursion
- for (HelicalTrackHit h1 : HitCollectionUtilites.GetSortedHits(hits, seedLayers[0])) {
- if (debug)
- System.out.println(h1.toString());
- for (HelicalTrackHit h2 : HitCollectionUtilites.GetSortedHits(hits, seedLayers[1])) {
- if (debug)
- System.out.println(h2.toString());
- for (HelicalTrackHit h3 : HitCollectionUtilites.GetSortedHits(hits, seedLayers[2])) {
- if (debug)
- System.out.println(h3.toString());
- //make a 3-hit test track...see if it passes CheckTrack
- List<HelicalTrackHit> testTrack = new ArrayList<HelicalTrackHit>();
- testTrack.add(h1);
- testTrack.add(h2);
- testTrack.add(h3);
- StraightTrack trk = makeTrack(testTrack);
- if (!checkerTrack.checkSeed(trk))
- break;
- seeds.add(trk);
+public class StraightTrackFinder {
+
+ private HitManager _hitmanager;
+ private StraightTrackFitter _helixfitter;
+ private StraightTrackConfirmerExtender _confirmer;
+ private List<SeedCandidate> _trackseeds;
+ private ISeedTrackerDiagnostics _diag = null;
+ private Set<MCParticle> _seededmcp;
+ private Set<MCParticle> _confirmedmcp;
+ TrackCheck _trackCheck; // set by SeedTracker
+ private boolean _debug = false;
+
+
+ /**
+ * Creates a new instance of SeedTrackFinder
+ */
+ public StraightTrackFinder(HitManager hitmanager, StraightTrackFitter helixfitter) {
+
+ // Save the pointers to the hit manager and helix fitter classes
+ _hitmanager = hitmanager;
+ _helixfitter = helixfitter;
+
+ // Instantiate the Confirmer/Extender and Seed Candidate merging classes
+ _confirmer = new StraightTrackConfirmerExtender(_hitmanager, _helixfitter);
+
+ // Create a list of track seeds that have been found
+ _trackseeds = new ArrayList<SeedCandidate>();
+
+ // Create a set of MC Particles that have been seeded, confirmed
+ _seededmcp = new HashSet<MCParticle>();
+ _confirmedmcp = new HashSet<MCParticle>();
+
+ }
+
+ public void setDiagnostic(ISeedTrackerDiagnostics d) {
+
+ // Setup the diagnostics for this class and the classes used by this class
+ _diag = d;
+ _confirmer.setDiagnostics(_diag);
+ }
+
+ public boolean FindTracks(SeedStrategy strategy, double bfield) {
+
+ // Instantiate the fast hit checker
+ // FastCheck checker = new FastCheck(strategy, bfield, _diag);
+ // if(_applySectorBinning) checker.setDoSectorBinCheck(_hitmanager.getSectorManager());
+// SeedSectoring ss = new SeedSectoring(_hitmanager, strategy, bfield, _applySectorBinning);
+ List<SeedLayer> seeds = strategy.getLayers(SeedLayer.SeedType.Seed);
+
+// List<List<Sector>> sslist = ss.SeedSectors();
+// if(_debug)
+// System.out.println(this.getClass().getSimpleName()+": number of SeedSectors="+sslist.size());
+ // Loop over the valid sector combinations
+ // for (List<Sector> slist : sslist) {
+ // Loop over the first seed layer
+ for (HelicalTrackHit hit1 : _hitmanager.getTrackerHits(seeds.get(0)))
+
+ // Loop over the second seed layer and check that we have a hit pair consistent with our strategy
+ for (HelicalTrackHit hit2 : _hitmanager.getTrackerHits(seeds.get(1))) {
+
+ // Call _trackCheck if set
+ if (_trackCheck != null) {
+ SeedCandidate tempseed = new SeedCandidate(strategy, bfield);
+ tempseed.addHit(hit1);
+ tempseed.addHit(hit2);
+ if (!_trackCheck.checkSeed(tempseed))
+ continue;
+ }
+
+// // Check if the pair of hits is consistent with the current strategy
+// if (!checker.TwoPointCircleCheck(hit1, hit2, null)) {
+// if (_diag != null) _diag.fireCheckHitPairFailed(hit1, hit2);
+// continue;
+// }
+ // Loop over the third seed layer and check that we have a hit triplet consistent with our strategy
+ for (HelicalTrackHit hit3 : _hitmanager.getTrackerHits(seeds.get(2))) {
+ // Call _trackCheck if set
+ if (_trackCheck != null) {
+ SeedCandidate tempseed2 = new SeedCandidate(strategy, bfield);
+ tempseed2.addHit(hit1);
+ tempseed2.addHit(hit3);
+ if (!_trackCheck.checkSeed(tempseed2))
+ continue;
+
+ SeedCandidate tempseed3 = new SeedCandidate(strategy, bfield);
+ tempseed3.addHit(hit2);
+ tempseed3.addHit(hit3);
+ if (!_trackCheck.checkSeed(tempseed3))
+ continue;
}
+
+ // Form a seed candidate from the seed hits
+ SeedCandidate seed = new SeedCandidate(strategy, bfield);
+ seed.addHit(hit1);
+ seed.addHit(hit2);
+ seed.addHit(hit3);
+
+// // Check if the triplet of hits is consistent with the current strategy
+// if (!checker.ThreePointHelixCheck(hit1, hit2, hit3)) {
+//
+// if (_diag != null) {
+// if (seed.isTrueSeed())
+// _diag.fireCheckHitTripletFailed(hit1, hit2, hit3);
+// }
+// continue;
+// }
+ // Form a seed candidate from the seed hits
+ // If it's a true seed, add the MC Particle to those that were seeded
+ if (_diag != null)
+ if (seed.isTrueSeed())
+ _seededmcp.addAll(seed.getMCParticles());
+
+ if (_debug)
+ System.out.println(this.getClass().getSimpleName() + ": fit the candidate");
+
+ // See if we can fit a helix to this seed candidate
+ boolean success = _helixfitter.FitCandidate(seed, strategy);
+
+ if (!success)
+ continue;
+
+ if (_debug)
+ System.out.println(this.getClass().getSimpleName() + ": fit success");
+
+ // Save the helix fit
+ seed.setHelix(_helixfitter.getHelix());
+
+ // Check the seed - hook for plugging in external constraint
+ if (_trackCheck != null)
+ if (!_trackCheck.checkSeed(seed))
+ continue;
+
+ // See if we can confirm this seed candidate
+ success = _confirmer.Confirm(seed, strategy, bfield);
+ if (!success)
+ continue;
+
+ if (_debug)
+ System.out.println(this.getClass().getSimpleName() + ": confirmed seed");
+
+ // Confirmed a seed - if it's a true seed, add the MC Particle to those that were confirmed
+ if (_diag != null)
+ if (seed.isTrueSeed())
+ _confirmedmcp.addAll(seed.getMCParticles());
+
+ if (_debug)
+ System.out.println(this.getClass().getSimpleName() + ": try to extend");
+
+ // Try to extend each confirmed seed candidates to make a track candidate
+ List<SeedCandidate> confirmedlist = _confirmer.getResult();
+ for (SeedCandidate confirmedseed : confirmedlist)
+
+ // See if we can extend this seed candidate
+ _confirmer.Extend(confirmedseed, strategy, bfield, _trackseeds);
}
}
- return seeds;
- }
-
- /*
- * recursively extend the seeds through all of the extend layers..
- * ...I think this should work...
- */
- private void extendTrack(int[] extendLayers, int n, StraightTrack origTrack, List<HelicalTrackHit> hits, List<StraightTrack> trackList) {
- if (n >= extendLayers.length) {
- if (debug)
- System.out.println("Done finding this track through all " + n + " extra layers");
- trackList.add(origTrack);
- return;
- }
-
- boolean cannotExtendThisLayer = true;
- if (debug)
- System.out.println("Extending to layer " + extendLayers[n]);
- for (HelicalTrackHit h : HitCollectionUtilites.GetSortedHits(hits, extendLayers[n])) {
- //let's see if this hit makes sense to add to original track
- if (!checkerHOT.checkNewHit(origTrack, h))
- continue;
-
- List<TrackerHit> origHits = origTrack.getTrackerHits();
- //make a new list and cast them as HelicalTrackHits (Track only stores TrackerHits)
- List<HelicalTrackHit> newHits = new ArrayList<>();
- for (TrackerHit oh : origHits) {
- HelicalTrackHit hoh = (HelicalTrackHit) oh;
- System.out.println(hoh.getPosition()[0]);
- newHits.add(hoh);
- }
- //add the new hit to the list & make new track
- newHits.add(h);
- StraightTrack newTrack = makeTrack(newHits);
- //check the new track after we've added this hit
- if (!checkerTrack.checkTrack(newTrack))
- continue;
- cannotExtendThisLayer = false;
- //extend again to the next layer
- extendTrack(extendLayers, n + 1, newTrack, hits, trackList);
- }
-
- //didn't find any hits in this layer that match the track...but let's try the next one
- if (cannotExtendThisLayer)
- extendTrack(extendLayers, n + 1, origTrack, hits, trackList);
-
- return;
+
+// // Done with track finding for this strategy
+// if (_diag != null)
+// _diag.fireFinderDone(_trackseeds, _seededmcp);
+ return _trackseeds.size() > 0;
+ }
+
+ /**
+ * Return the list of track candidates.
+ *
+ * @return track candidates
+ */
+ public List<SeedCandidate> getTrackSeeds() {
+ return _trackseeds;
+ }
+
+ /**
+ * Clear the list of track candidates accumulated from previous calls to
+ * SeedTrackFinder (typically done before starting a new event).
+ */
+ public void clearTrackSeedList() {
+ _trackseeds.clear();
+ _seededmcp.clear();
+ _confirmedmcp.clear();
+ }
+
+ /**
+ * Set the maximum number of fits for a given seed in a confirm or extend
+ * step.
+ *
+ * @param maxfits maximum number of fits
+ */
+ public void setMaxFit(int maxfits) {
+ _confirmer.setMaxFit(maxfits);
+ }
+
+ /**
+ * Return the list of MCParticles that formed valid 3-hit seeds.
+ *
+ * @return list of seeded MCParticles
+ */
+ public Set<MCParticle> getSeededMCParticles() {
+ return _seededmcp;
+ }
+
+ /**
+ * Return the list of confirmed MCParticles.
+ *
+ * @return confirmed MCParticles
+ */
+ public Set<MCParticle> getConfirmedMCParticles() {
+ return _confirmedmcp;
+ }
+
+ /**
+ * Return the StraightTrackConfirmerExtender
+ *
+ * @return confirmer/extender object
+ *
+ */
+ public StraightTrackConfirmerExtender getConfirmer() {
+ return _confirmer;
+ }
+
+ public void setDebug(boolean debug) {
+ System.out.println("Setting " + this.getClass().getSimpleName() + " debug to " + debug);
+ _debug = debug;
}
}
Added: java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackFitter.java
=============================================================================
--- java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackFitter.java (added)
+++ java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackFitter.java Thu Oct 30 08:16:13 2014
@@ -0,0 +1,261 @@
+/*
+ * HelixFitter.java
+ *
+ * Created on January 22, 2008, 9:25 AM
+ *
+ */
+package org.hps.recon.tracking.nobfield;
+
+import java.util.List;
+import java.util.Map;
+import org.hps.recon.tracking.MaterialManager;
+import org.hps.recon.tracking.MultipleScattering;
+import org.hps.recon.tracking.nobfield.StraightTrack2DFitter.FitStatus;
+import org.lcsim.fit.circle.CircleFit;
+import org.lcsim.fit.helicaltrack.HelicalTrackCross;
+import org.lcsim.fit.helicaltrack.HelicalTrackFit;
+import org.lcsim.fit.helicaltrack.HelicalTrackHit;
+import org.lcsim.fit.helicaltrack.MultipleScatter;
+import org.lcsim.fit.line.SlopeInterceptLineFit;
+import org.lcsim.fit.line.SlopeInterceptLineFitter;
+import org.lcsim.fit.zsegment.ZSegmentFit;
+import org.lcsim.recon.tracking.seedtracker.ConstrainHelix;
+import org.lcsim.recon.tracking.seedtracker.SeedCandidate;
+import org.lcsim.recon.tracking.seedtracker.SeedStrategy;
+import org.lcsim.recon.tracking.seedtracker.TrackCheck;
+import org.lcsim.recon.tracking.seedtracker.diagnostic.ISeedTrackerDiagnostics;
+
+/**
+ *
+ * @author Richard Partridge
+ * @version 1.0
+ */
+public class StraightTrackFitter {
+
+ private StraightTrack2DFitter _fitter = new StraightTrack2DFitter();
+ protected MultipleScattering _scattering;
+ private HelicalTrackFit _helix;//still use HelicalTrackFit...
+ private MaterialManager _materialmanager;
+ //private ConstrainHelix _constrain;
+ private double _bfield = 0.;
+ private CircleFit _circlefit;
+ private SlopeInterceptLineFit _linefit;
+ private ZSegmentFit _zsegmentfit;
+ private FitStatus _status;
+ private ISeedTrackerDiagnostics _diag = null;
+ TrackCheck _trackCheck; // set by SeedTracker
+ private boolean _debug = false;
+
+ /**
+ * Creates a new instance of StraightTrackFitter
+ */
+ public StraightTrackFitter(MaterialManager materialmanager) {
+ _materialmanager = materialmanager;
+
+ _scattering = new MultipleScattering(_materialmanager);
+
+ // _constrain = new ConstrainHelix();
+ }
+
+ // public boolean FitCandidate(SeedCandidate seed, SeedStrategy strategy) {
+ public boolean FitCandidate(SeedCandidate seed, SeedStrategy strategy) {// change this to something reasonable
+ if (_debug)
+ System.out.printf("%s: FitCandidate() with strategy: \"%s\"\n", this.getClass().getSimpleName(), strategy.getName());
+
+ // Initialize fit results to null objects
+ _helix = null;
+
+ // Check that we have set the magnetic field
+ if (_bfield != 0.)
+ throw new RuntimeException("B Field should be zero for the straight track fitter");
+
+ // Set the tolerance in the fitter
+ // _fitter.setTolerance(Math.sqrt(strategy.getMaxChisq()));
+ // Retrieve list of hits to be fit
+ List<HelicalTrackHit> hitlist = seed.getHits();
+
+ if (_debug) {
+ System.out.println(this.getClass().getSimpleName() + ": hitlist size " + hitlist.size() + ":");
+ double z_prev = -99999999.9;
+ for (HelicalTrackHit hit : hitlist) {
+ System.out.printf("%s: (%.2f,%.2f,%.2f) corrected %s\n",
+ this.getClass().getSimpleName(), hit.getPosition()[0], hit.getPosition()[1], hit.getPosition()[2],
+ hit.getCorrectedPosition().toString());
+ if (z_prev < -99999999.0)
+ z_prev = hit.getPosition()[2];
+ else {
+ if (Math.signum(z_prev) != Math.signum(hit.getPosition()[2]))
+ System.out.printf("%s: topBotHits in event\n", this.getClass().getSimpleName());
+ z_prev = hit.getPosition()[2];
+ }
+ }
+ }
+ // Retrieve the old helix
+ HelicalTrackFit oldhelix = seed.getHelix();
+
+ // If this is the candidate's first helix fit, first do a fit without MS errors
+ if (oldhelix == null) {
+
+ if (_debug)
+ System.out.println(this.getClass().getSimpleName() + ": no old helix do the fit without MS scattering map");
+
+ // Reset the stereo hit positions to their nominal value
+ for (HelicalTrackHit hit : hitlist)
+ if (hit instanceof HelicalTrackCross)
+ ((HelicalTrackCross) hit).resetTrackDirection();
+ // Do the fit
+ _status = _fitter.fit(hitlist);
+ SaveFit();
+
+ // Retrieve the helix parameters from this fit and save them in the seed
+ oldhelix = _fitter.getFit();
+ seed.setHelix(oldhelix);
+
+ if (_debug)
+ System.out.printf("%s: fit succeeded, will be used as seed, with chi2=%.3f and helix:\n%s \n", this.getClass().getSimpleName(), oldhelix.chisqtot(), oldhelix.toString());
+
+ // Calculate the multiple scattering angles for this helix
+ try {
+ seed.setScatterAngles(_scattering.FindScatters(oldhelix));
+ } catch (Exception e) {
+ System.err.println(e);
+ if(_debug)
+ {
+ e.printStackTrace();
+ }
+ return false;
+ }
+
+ if(_debug) {
+ System.out.printf("%s: after calculating the MS map it has %d size:\n",this.getClass().getSimpleName(),seed.getMSMap().size());
+ for(Map.Entry<HelicalTrackHit, MultipleScatter> ms : seed.getMSMap().entrySet()) {
+ System.out.printf("%s: Hit at layer %d and position %s has MS drpdhi=%f and dz=%f\n",
+ this.getClass().getSimpleName(),ms.getKey().Layer(),ms.getKey().getCorrectedPosition().toString(),ms.getValue().drphi(),ms.getValue().dz());
+ }
+ }
+
+ }
+
+ if (_debug)
+ System.out.printf("%s: update the stereo hit positions with the old helix:\n%s \n", this.getClass().getSimpleName(), oldhelix.toString());
+
+ // Update the stereo hit positions and covariance matrices
+ CorrectStereoHits(hitlist, oldhelix);
+
+ // Do a helix fit including MS errors
+ if(_debug) {
+ System.out.printf("%s: do the helix fit including MS map this time: \n",this.getClass().getSimpleName());
+ for(Map.Entry<HelicalTrackHit, MultipleScatter> ms : seed.getMSMap().entrySet()) {
+ System.out.printf("%s: Hit at layer %d and position %s has MS drpdhi=%f and dz=%f\n",
+ this.getClass().getSimpleName(),ms.getKey().Layer(),ms.getKey().getCorrectedPosition().toString(),ms.getValue().drphi(),ms.getValue().dz());
+ }
+ }
+ _status = _fitter.fit(hitlist, seed.getMSMap(), oldhelix);
+ SaveFit();
+
+ // Retrieve and save the new helix fit
+ _helix = _fitter.getFit();
+ seed.setHelix(_helix);
+ if ((_trackCheck != null) && (!_trackCheck.checkSeed(seed)))
+ return false;
+
+ // Set the non-holonomic constraint chi square...don't worry about this for now-- MG 10/29/2014
+ // _constrain.setConstraintChisq(strategy, _helix, hitlist);
+ // If the total chi square is below the cut, we have a successful fit
+ boolean success = _helix.chisqtot() <= strategy.getMaxChisq();
+ if (!success)
+ if (_diag != null)
+ _diag.fireFailedChisqCut(seed);
+
+// // If fit was successful, set the new multiple scattering angles
+ if (success) {
+ seed.setScatterAngles(_scattering.FindScatters(_helix));
+ if (_debug)
+ System.out.printf("%s: this fit was successful, chi2=%f with resulting helix paramaters:\n%s\n", this.getClass().getSimpleName(), _helix.chisqtot(), _helix.toString()); // System.out.printf("%s: updated MS map before returning from fitCandidate():\n",this.getClass().getSimpleName());
+ // for(Map.Entry<HelicalTrackHit, MultipleScatter> ms : seed.getMSMap().entrySet()) {
+ // System.out.printf("%s: Hit at layer %d and position %s has MS drpdhi=%f and dz=%f\n",
+ // this.getClass().getSimpleName(),ms.getKey().Layer(),ms.getKey().getCorrectedPosition().toString(),ms.getValue().drphi(),ms.getValue().dz());
+
+ } else if (_debug)
+ System.out.printf("%s: this fit with chi2=%f failed!\n", this.getClass().getSimpleName(), _helix.chisqtot());
+
+ return success;
+ }
+
+ public void setDiagnostics(ISeedTrackerDiagnostics d) {
+ _diag = d;
+ return;
+ }
+
+ public HelicalTrackFit getHelix() {
+ return _helix;
+ }
+
+ public FitStatus getFitStatus() {
+ return _status;
+ }
+
+ public CircleFit getCircleFit() {
+ return _circlefit;
+ }
+
+ public SlopeInterceptLineFit getLineFit() {
+ return _linefit;
+ }
+
+ public ZSegmentFit getZSegmentFit() {
+ return _zsegmentfit;
+ }
+
+ public void setBField(double bfield) {
+ _bfield = bfield;
+ _scattering.setBField(_bfield);
+ // _constrain.setBField(_bfield);
+ return;
+ }
+
+ public void setReferencePoint(double x, double y) {
+ // _fitter.setReferencePoint(x, y);
+ return;
+ }
+
+ private void SaveFit() {
+
+ // Default to no fit results when circle fit fails
+ _circlefit = null;
+ _linefit = null;
+ _zsegmentfit = null;
+
+ // If we have a circle fit, try to save the line fit / zsegment fit results
+ if (_status == FitStatus.InconsistentSeed)
+ return;
+ if (_status == FitStatus.XYLineFitFailed)
+ return;
+ if (_status == FitStatus.SZLineFitFailed)
+ return;
+ // _linefit = _fitter.getLineFit();
+// _zsegmentfit = _fitter.getZSegmentFit();
+
+ return;
+ }
+
+ private void CorrectStereoHits(List<HelicalTrackHit> hitlist, HelicalTrackFit helix) {
+
+ // Get the PathMap - used to find the track direction at the hit location
+ Map<HelicalTrackHit, Double> pathmap = helix.PathMap();
+
+ // Loop over the hits and look for stereo hits
+ for (HelicalTrackHit hit : hitlist)
+ if (hit instanceof HelicalTrackCross)
+ if (pathmap.containsKey(hit)) {
+ // Found a stereo hit - calculate the track direction and pass it to the hit
+ ((HelicalTrackCross) hit).setTrackDirection(helix);
+ }
+ return;
+ }
+
+ public void setDebug(boolean debug) {
+ this._debug = debug;
+ _scattering.setDebug(true);
+ }
+}
Copied: java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackReconDriver.java (from r1321, java/trunk/tracking/src/main/java/org/hps/recon/tracking/TrackerReconDriver.java)
=============================================================================
--- java/trunk/tracking/src/main/java/org/hps/recon/tracking/TrackerReconDriver.java (original)
+++ java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTrackReconDriver.java Thu Oct 30 08:16:13 2014
@@ -1,9 +1,9 @@
-package org.hps.recon.tracking;
+package org.hps.recon.tracking.nobfield;
import hep.physics.vec.BasicHep3Vector;
-
import java.util.List;
-
+import org.hps.recon.tracking.CoordinateTransformations;
+import org.hps.recon.tracking.nobfield.StraightTracker;
import org.lcsim.event.EventHeader;
import org.lcsim.event.Track;
import org.lcsim.event.base.BaseTrack;
@@ -21,7 +21,7 @@
*
* @author Matt Graham
*/
-public final class TrackerReconDriver extends Driver {
+public final class StraightTrackReconDriver extends Driver {
// Debug flag.
private boolean debug = false;
@@ -34,9 +34,9 @@
// Default B-field value.
private double bfield = 0.5;
// Tracking strategies resource path.
- private String strategyResource = "HPS-Test-4pt1.xml";
+ private String strategyResource = "HPS-Full.xml";
// Output track collection.
- private String trackCollectionName = "MatchedTracks";
+ private String trackCollectionName = "StraightTracks";
// HelicalTrackHit input collection.
private String stInputCollectionName = "RotatedHelicalTrackHits";
// Include MS (done by removing XPlanes from the material manager results)
@@ -49,7 +49,7 @@
private boolean _applySectorBinning = true;
private double rmsTimeCut = -1;
- public TrackerReconDriver() {
+ public StraightTrackReconDriver() {
}
public void setDebug(boolean debug) {
@@ -134,15 +134,15 @@
*/
private void initialize() {
- //
+ //
// 1) Driver to run Seed Tracker.
//
if (!strategyResource.startsWith("/")) {
strategyResource = "/org/hps/recon/tracking/strategies/" + strategyResource;
}
List<SeedStrategy> sFinallist = StrategyXMLUtils.getStrategyListFromInputStream(this.getClass().getResourceAsStream(strategyResource));
- SeedTracker stFinal = new SeedTracker(sFinallist, this._useHPSMaterialManager, this.includeMS);
- stFinal.setApplySectorBinning(_applySectorBinning);
+ StraightTracker stFinal = new StraightTracker(sFinallist, this._useHPSMaterialManager, this.includeMS);
+// stFinal.setApplySectorBinning(_applySectorBinning);
stFinal.setUseDefaultXPlane(false);
stFinal.setDebug(this.debug);
stFinal.setIterativeConfirmed(_iterativeConfirmed);
@@ -156,10 +156,10 @@
// stFinal.setSectorParams(false); //this doesn't actually seem to do anything
stFinal.setSectorParams(1, 10000);
add(stFinal);
-
- if (rmsTimeCut > 0) {
- stFinal.setTrackCheck(new HitTimeTrackCheck(rmsTimeCut));
- }
+//
+// if (rmsTimeCut > 0) {
+// stFinal.setTrackCheck(new HitTimeTrackCheck(rmsTimeCut));
+// }
}
/**
Added: java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTracker.java
=============================================================================
--- java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTracker.java (added)
+++ java/trunk/tracking/src/main/java/org/hps/recon/tracking/nobfield/StraightTracker.java Thu Oct 30 08:16:13 2014
@@ -0,0 +1,328 @@
+/*
+ * SeedTracker.java
+ *
+ * Created on August 16, 2005, 8:54 AM
+ *
+ */
+package org.hps.recon.tracking.nobfield;
+
+import hep.physics.vec.BasicHep3Vector;
+import hep.physics.vec.Hep3Vector;
+
+import java.util.*;
+import org.hps.recon.tracking.MaterialManager;
+import org.hps.recon.tracking.MaterialSupervisor;
+import org.lcsim.detector.ITransform3D;
+import org.lcsim.event.EventHeader;
+import org.lcsim.event.MCParticle;
+import org.lcsim.fit.helicaltrack.HelicalTrackHit;
+import org.lcsim.geometry.Detector;
+import org.lcsim.recon.tracking.seedtracker.DefaultStrategy;
+import org.lcsim.recon.tracking.seedtracker.HitManager;
+import org.lcsim.recon.tracking.seedtracker.MakeTracks;
+import org.lcsim.recon.tracking.seedtracker.SeedCandidate;
+import org.lcsim.recon.tracking.seedtracker.SeedStrategy;
+import org.lcsim.recon.tracking.seedtracker.TrackCheck;
+import org.lcsim.recon.tracking.seedtracker.diagnostic.ISeedTrackerDiagnostics;
+import org.lcsim.util.Driver;
+import org.lcsim.util.aida.AIDA;
+
+/**
+ * Tracking algorithm based on forming track seeds from all 3-hit combinations,
+ * confirming this tentantive helix by requiring additional hits, and extending
+ * the track to additional layers. The operation of the algorithm is controlled
+ * by a list of SeedStrategy that define the tracker layers to be used and the
+ * cuts on the tracking algorithm.
+ *
+ * @author Richard Partridge
+ * @version 1.0
+ */
+public class StraightTracker extends Driver {
+
+ protected List<SeedStrategy> _strategylist;
+ protected ISeedTrackerDiagnostics _diag = null;
+ protected MaterialManager _materialmanager = new MaterialManager();
+ protected HitManager _hitmanager;
+ protected StraightTrackFitter _helixfitter;
+ protected StraightTrackFinder _finder;
+ protected MakeTracks _maketracks;
+ protected Hep3Vector _IP = new BasicHep3Vector(0., 0., 0.);
+ protected double _bfield = 0.;
+ protected boolean _forceBField = false;
+ protected double _rtrk = 1000.;
+ protected boolean _autosectoring = false;
+ protected AIDA aida = AIDA.defaultInstance();
+ protected boolean _timing = false;
+ protected String _inputCol = "HelicalTrackHits";
+ private int _iterativeConfirmedFits = 0;
+ private boolean _debug = false;
+
+ /**
+ * Creates a new instance of SeedTracker
+ */
+ public StraightTracker() {
+ this(new DefaultStrategy().getStrategyList(), true, true);
+ }
+
+ public StraightTracker(List<SeedStrategy> strategylist, boolean includeMS) {
+ initialize(strategylist, true, includeMS);
+ }
+
+ public StraightTracker(List<SeedStrategy> strategylist, boolean useHPSMaterialManager, boolean includeMS) {
+ initialize(strategylist, useHPSMaterialManager, includeMS);
+ }
+
+ private void initialize(List<SeedStrategy> strategylist, boolean useHPSMaterialManager, boolean includeMS) {
+ _strategylist = strategylist;
+ // Instantiate the hit manager
+ _hitmanager = new HitManager();
+ // Instantiate the material manager for HPS, the helix fitter and seed track finder as tey depends on the material manager
+ if (useHPSMaterialManager) {
+ MaterialSupervisor materialSupervisor = new MaterialSupervisor(includeMS);
+ _materialmanager = materialSupervisor;
+ _helixfitter = new StraightTrackFitter(materialSupervisor);
+ } else {
+ MaterialManager materialmanager = new MaterialManager(includeMS);
+ _materialmanager = materialmanager; //mess around with types here...
+ _helixfitter = new StraightTrackFitter(materialmanager);
+ }
+ // Instantiate the Seed Finder
+ _finder = new StraightTrackFinder(_hitmanager, _helixfitter);
+ // Instantiate the Track Maker
+ _maketracks = new MakeTracks();
+ }
+
+ /**
+ * Set to enable debug output
+ *
+ * @param debug switch
+ */
+ public void setDebug(boolean debug) {
+ _debug = true;
+ _materialmanager.setDebug(debug);
+ _helixfitter.setDebug(debug);
+ _finder.setDebug(debug);
+ }
+
+ @Override
+ protected void process(EventHeader event) {
+
+// System.out.println("New event");
+ // Pass the event to the diagnostics package
+ if (_diag != null)
+ _diag.setEvent(event);
+
+ // Initialize timing
+ long last_time = System.currentTimeMillis();
+
+ // Get the hit collection from the event
+ List<HelicalTrackHit> hitcol = event.get(HelicalTrackHit.class, _inputCol);
+ if (_debug)
+ System.out.println("In " + this.getClass().getSimpleName() + ": Number of HelicalTrackHits=" + hitcol.size());
+ // Sort the hits for this event
+ _hitmanager.OrganizeHits(hitcol);
+
+ // Make the timing plots if requested
+ long start_time = System.currentTimeMillis();
+ double dtime = ((double) (start_time - last_time)) / 1000.;
+ last_time = start_time;
+ if (_timing)
+ aida.cloud1D("Organize Hits").fill(dtime);
+
+ // Make sure that we have cleared the list of track seeds in the finder
+ _finder.clearTrackSeedList();
+
+ // Loop over strategies and perform track finding
+ for (SeedStrategy strategy : _strategylist) {
+
+ // Set the strategy for the diagnostics
+ if (_diag != null)
+ _diag.fireStrategyChanged(strategy);
+
+ // Perform track finding under this strategy
+ _finder.FindTracks(strategy, _bfield);
+ if (_debug)
+ System.out.println("In " + this.getClass().getSimpleName() + ": Number of Tracks Found=" + _finder.getTrackSeeds().size());
+ // Make the timing plots if requested
+ long time = System.currentTimeMillis();
+ dtime = ((double) (time - last_time)) / 1000.;
+ last_time = time;
+ if (_timing)
+ aida.cloud1D("Tracking time for strategy " + strategy.getName()).fill(dtime);
+ }
+
+ // Get the list of final list of SeedCandidates
+ List<SeedCandidate> trackseeds = _finder.getTrackSeeds();
+
+ if (_iterativeConfirmedFits > 0) {
+ // Iteratively re-fit tracks to take into account helix and hit position correlations
+ if (_debug)
+ System.out.printf("%s: Iteratively improve %d seeds\n", this.getClass().getSimpleName(), trackseeds.size());
+ List<SeedCandidate> seedsToRemove = new ArrayList<SeedCandidate>();
+ for (SeedCandidate seed : trackseeds) {
+ SeedStrategy strategy = seed.getSeedStrategy();
+ boolean success = false;
+ for (int iterFit = 0; iterFit < _iterativeConfirmedFits; ++iterFit)
+ success = _helixfitter.FitCandidate(seed, strategy);
+ if (!success)
+ seedsToRemove.add(seed);
+// else if (_debug)
+// System.out.printf("%s: done iterating, this seed will be added to event:\n%s\n", this.getClass().getSimpleName(), seed.toString());
+ }
+ for (SeedCandidate badseed : seedsToRemove)
+ trackseeds.remove(badseed);
+ }
+
+ // Make tracks from the final list of track seeds
+ _maketracks.Process(event, trackseeds, _bfield);
+
+ // Save the MC Particles that have been seeded / confirmed if diagnostics are enabled
+ if (_diag != null) {
+ Set<MCParticle> seededmcpset = _finder.getSeededMCParticles();
+ List<MCParticle> seededmcp = new ArrayList<MCParticle>(seededmcpset);
+ event.put("SeededMCParticles", seededmcp, MCParticle.class, 0);
+ Set<MCParticle> confirmedmcpset = _finder.getConfirmedMCParticles();
+ List<MCParticle> confirmedmcp = new ArrayList<MCParticle>(confirmedmcpset);
+ event.put("ConfirmedMCParticles", confirmedmcp, MCParticle.class, 0);
+ }
+
+ // Clear the list of track seeds accumulated in the track finder
+ _finder.clearTrackSeedList();
+
+ // Make the total time plot if requested
+ long end_time = System.currentTimeMillis();
+ dtime = ((double) (end_time - start_time)) / 1000.;
+ if (_timing)
+ aida.cloud1D("Total tracking time").fill(dtime);
+
+ return;
+ }
+
+ @Override
+ protected void detectorChanged(Detector detector) {
+
+ // Only build the model when the detector is changed
+ _materialmanager.buildModel(detector);
+
+ // Find the bfield and pass it to the helix fitter and diagnostic package
+ if (!_forceBField)
+ _bfield = detector.getFieldMap().getField(_IP).z();
+
+ if (_diag != null)
+ _diag.setBField(_bfield);
+ _helixfitter.setBField(_bfield);
+
+ // Get the tracking radius
+ _rtrk = _materialmanager.getRMax();
+
+ // Set the sectoring parameters
+ if (_autosectoring)
+ _hitmanager.setSectorParams(_strategylist, _bfield, _rtrk);
+ }
+
+ /**
+ * Specifiy the strategies to be used by the SeedTracker algorithm. Invoking
+ * this
+ * method will override the default strategies defined by the
+ * DefaultStrategy
+ * class.
+ *
+ * @param strategylist List of strategies to be used
+ */
+ public void putStrategyList(List<SeedStrategy> strategylist) {
+
+ // Save the strategy list
+ _strategylist = strategylist;
+
+ // Set the sectoring parameters
+ if (_autosectoring)
+ _hitmanager.setSectorParams(strategylist, _bfield, _rtrk);
+
+ return;
+ }
+
+ public void setSectorParams(int nphi, double dz) {
+ _hitmanager.setSectorParams(nphi, dz);
+ _autosectoring = false;
+ return;
+ }
+
+ public void setDiagnostics(ISeedTrackerDiagnostics d) {
+
+ // Set the diagnostic package
+ _diag = d;
+ _helixfitter.setDiagnostics(_diag);
+ _finder.setDiagnostic(_diag);
+
+ // Pass the hit manager, material manager, and bfield to the diagnostic package
+ if (_diag != null) {
+ _diag.setMaterialManager(_materialmanager);
+ _diag.setHitManager(_hitmanager);
+ _diag.setBField(_bfield);
+ }
+ }
+
+ public void setTimingPlots(boolean timing) {
+ _timing = timing;
+ }
+
+ public void setTrkCollectionName(String name) {
+ _maketracks.setTrkCollectionName(name);
+ }
+
+ public void setInputCollectionName(String name) {
+ _inputCol = name;
+ }
+
+ public void setMaterialManagerTransform(ITransform3D _detToTrk) {
+ _materialmanager.setTransform(_detToTrk);
+ }
+
+ /**
+ * Set the maximum number of fits used to confirm or extend a seed.
+ *
+ * @param maxfit maximum number of fits
+ */
+ public void setMaxFit(int maxfit) {
+ _finder.setMaxFit(maxfit);
+ }
+
+ public void setBField(double bfield) {
+ _forceBField = true;
+ _bfield = bfield;
+ }
+
+ public void setReferencePoint(double xref, double yref) {
+ _helixfitter.setReferencePoint(xref, yref);
+ }
+
+ public void setSectorParams(boolean sector) {
+ _hitmanager.setDoSectoring(sector);
+ }
+
+ /**
+ * Set {@link TrackCheck} object to be used by the track finding algorithm.
+ * If this method is never called, no external checking of seeds and tracks
+ * is performed.
+ */
+ public void setTrackCheck(TrackCheck trackCheck) {
+ _finder._trackCheck = trackCheck;
+ _maketracks._trackCheck = trackCheck;
+ }
+
+ /**
+ * Set the maximum number of iterative fits on a confirmed/extended
+ * candidate.
+ *
+ * @param maxfits maximum number of fits
+ */
+ public void setIterativeConfirmed(int maxfits) {
+ this._iterativeConfirmedFits = maxfits;
+ }
+
+ public void setUseDefaultXPlane(boolean useDefault) {
+ _materialmanager.setDefaultXPlaneUsage(useDefault);
+
+ }
+
+}
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