Align: Add PV DCA to debug out

Author: f3sch

Detectors/Align/src/Controller.cxx

@@ -300,9 +300,23 @@ void Controller::process()
             dcov[i] = trcIn.getCov()[i];
           }
           trackParam_t trcOrig(trcIn.getX(), trcIn.getAlpha(), dpar, dcov, trcIn.getCharge());
-          if (PropagatorD::Instance()->propagateToAlphaX(trcOrig, trcAlgRef.getAlpha(), trcAlgRef.getX(), true)) {
+          auto prop = PropagatorD::Instance();
+          if (prop->propagateToAlphaX(trcOrig, trcAlgRef.getAlpha(), trcAlgRef.getX(), true)) {
             (*mDBGOut) << "trcomp"
-                       << "orig=" << trcOrig << "fit=" << trcAlgRef << "\n";
+                       << "orig=" << trcOrig
+                       << "fit=" << trcAlgRef
+                       << "\n";
+          }
+          o2::dataformats::DCA origDCA, fitDCA;
+          const auto& conf = AlignConfig::Instance();
+          if (prop->propagateToDCABxByBz(*vtx, trcOrig, conf.maxStep, MatCorrType(conf.matCorType), &origDCA) &&
+              prop->propagateToDCABxByBz(*vtx, trcAlgRef, conf.maxStep, MatCorrType(conf.matCorType), &origDCA)) {
+            (*mDBGOut) << "trcompatpv"
+                       << "orig=" << trcOrig
+                       << "origDCA=" << origDCA
+                       << "fit=" << trcAlgRef
+                       << "fitDCA=" << fitDCA
+                       << "\n";
           }
         }
         // RS: this is to substitute the refitter track by MC truth, just for debugging