IndexingSettings: Figure out max extra lattices in StartMessage + make it changeable

common/DiffractionExperiment.cpp

@@ -667,6 +667,7 @@ void DiffractionExperiment::FillMessage(StartMessage &message) const {
     message.pixel_signed = IsPixelSigned();
     message.sample_name = GetSampleName();
     message.max_spot_count = GetMaxSpotCount();
+    message.max_extra_lattices = indexing.GetMaxExtraLattices();
     message.pixel_mask_enabled = IsApplyPixelMask();
     message.detector_description = GetDetectorDescription();
     message.space_group_number = GetSpaceGroupNumber();

common/IndexingSettings.cpp

@@ -215,5 +215,12 @@ IndexingSettings &IndexingSettings::BlockingBehavior(bool input) {
 }
 
 int64_t IndexingSettings::GetMaxExtraLattices() const {
-    return 3;
+    return max_extra_lattices;
+}
+
+IndexingSettings &IndexingSettings::MaxExtraLattices(int64_t input) {
+    check_min("Max extra lattices", input, 0);
+    check_max("Max extra lattices", input, 10);
+    max_extra_lattices = input;
+    return *this;
 }

common/IndexingSettings.h

@@ -23,6 +23,8 @@ class IndexingSettings {
     int64_t indexing_threads = 4;
     int64_t viable_cell_min_spots = 9;
 
+    int64_t max_extra_lattices = 2;
+
     bool blocking_behavior = true;
     bool index_ice_rings = false;
 
@@ -51,6 +53,7 @@ public:
     IndexingSettings& RotationIndexingMinAngularRange_deg(float input);
     IndexingSettings& RotationIndexingAngularStride_deg(float input);
     IndexingSettings& BlockingBehavior(bool input);
+    IndexingSettings& MaxExtraLattices(int64_t input);
 
     [[nodiscard]] int64_t GetViableCellMinSpots() const;
     [[nodiscard]] IndexingAlgorithmEnum GetAlgorithm() const;