23.0-refactor-PixelConditionsData

Addressing stage 1 of ATLASRECTS-7683, this introduces structs of parameters which are habitually used together (such as all the fit parameters for the pixel ToT/charge calibration) and uses these types for setters and getters in the PixelChargeCondData interface. In this initial stage, it makes the interface busier; eventually these will replace the legacy methods and the interface will be cleaner (as well as cleaning up PixelChargeCalibAlgs). unit tests of these new interfaces are also given.

InnerDetector/InDetConditions/PixelConditionsData/PixelConditionsData/ChargeCalibParameters.h

+/*
+  Copyright (C) 2002-2023 CERN for the benefit of the ATLAS collaboration
+*/
+
+/**
+ * @file PixelChargeCalibParameters.h
+ * @author Shaun Roe
+ * @date June, 2023
+ * @brief Structs for holding charge calibration parameterisation and data
+ */
+ 
+namespace PixelChargeCalib{
+  
+  struct LegacyFitParameters{
+    float A = 0.f;
+    float E = 0.f;
+    float C = 0.f;
+    ///Return Time-over-threshold given charge Q
+    float ToT(float Q) const{
+      if ((C + Q) != 0.0) {
+        return A * (E + Q) / (C + Q);
+      }
+      return 0.f;
+    }
+    //return Charge, given time-over-Threshold
+    float Q(float tot) const{
+      if (std::fabs(A) != 0.0 && std::fabs(tot / A - 1.0) != 0.0) {
+        return  (C * tot / A - E) / (1.0 - tot / A);
+      }
+      return 0.f;
+    }
+    
+  };
+ 
+  struct LinearFitParameters{
+    float F = 0.f;
+    float G = 0.f;
+    float ToT(float Q) const{
+      if (F != 0.0f){
+        return (Q - G) / F;
+      }
+      return 0.f;
+    }
+    float Q(float tot) const {
+     return  F * tot + G;
+    }
+  };
+ 
+  struct Thresholds{
+    int value = 0;
+    int sigma = 0;
+    int noise = 0;
+    int inTimeValue = 0;
+  };
+  
+  struct Resolutions{
+    float res1 = 0.f;
+    float res2 = 0.f;
+    float total(float Q) const {
+      return res1 + res2 * Q;
+    }
+  };
+}