add debug output for alignment of dut

src/algorithms/Alignment.cpp

@@ -123,15 +123,22 @@ void Alignment::MinimiseResiduals(Int_t& npar, Double_t* grad, Double_t& result,
 
     // Apply new alignment conditions
     globalDetector->update();
+  LOG(DEBUG) << "Updated parameters for "<<detectorToAlign;
 
     // The chi2 value to be returned
     result = 0.;
 
+  LOG(DEBUG) << "Looping over "<<globalTracks.size()<<" tracks";
+
     // Loop over all tracks
     for(auto& track : globalTracks) {
         // Get all clusters on the track
         Clusters associatedClusters = track->associatedClusters();
 
+      LOG(DEBUG) << "- track has chi2 "<<track->chi2();
+      LOG(DEBUG) << "- track has gradient x "<<track->m_direction.X();
+      LOG(DEBUG) << "- track has gradient y "<<track->m_direction.Y();
+
         // Find the cluster that needs to have its position recalculated
         for(auto& associatedCluster : associatedClusters) {
             string detectorID = associatedCluster->detectorID();
@@ -147,8 +154,13 @@ void Alignment::MinimiseResiduals(Int_t& npar, Double_t* grad, Double_t& result,
             double residualX = intercept.X() - positionGlobal.X();
             double residualY = intercept.Y() - positionGlobal.Y();
             double error = associatedCluster->error();
+          LOG(DEBUG) << "- track has intercept ("<<intercept.X()<<","<<intercept.Y()<<")";
+          LOG(DEBUG) << "- cluster has position ("<<positionGlobal.X()<<","<<positionGlobal.Y()<<")";
+          double deltachi2 = ((residualX * residualX + residualY * residualY) / (error * error));
+          LOG(DEBUG) << "- delta chi2 = "<<deltachi2;
             // Add the new residual2
-            result += ((residualX * residualX + residualY * residualY) / (error * error));
+            result += deltachi2;
+          LOG(DEBUG) << "- result is now "<<result;
         }
     }
 }