Add possible reflection and completeness to MergeStatistics

common/UnitCell.cpp

@@ -69,3 +69,6 @@ std::optional<UnitCell> MeanUnitCell(const std::vector<UnitCell> &cells) {
     return ret;
 }
 
+UnitCell::operator gemmi::UnitCell() const {
+    return {a, b, c, alpha, beta, gamma};
+}

common/UnitCell.h

@@ -6,6 +6,7 @@
 #include <ostream>
 #include <optional>
 #include <vector>
+#include <gemmi/unitcell.hpp>
 
 struct UnitCell {
     float a;
@@ -15,8 +16,10 @@ struct UnitCell {
     float beta;
     float gamma;
 
-    bool is_finite() const;
-    bool is_close(const UnitCell &ref, float dist_tolerance, float angle_tolerance_deg) const;
+    operator gemmi::UnitCell() const;
+
+    [[nodiscard]] bool is_finite() const;
+    [[nodiscard]] bool is_close(const UnitCell &ref, float dist_tolerance, float angle_tolerance_deg) const;
 };
 
 std::ostream &operator<<(std::ostream &output, const UnitCell &in);