Restore random infill start

CURA-12250

Author: wawanbreton

src/feature_generation/MeshInfillGenerator.cpp

@@ -200,9 +200,6 @@ void MeshInfillGenerator::generateFeatures(
             }
 
             extruder_plan_infill->appendFeatureExtrusion(feature_extrusion);
-
-#warning Handle infill_randomize_start_location in scheduler
-            // if (settings.get<bool>("infill_randomize_start_location"))
         }
     }
 }

src/operation_transformation/FeatureExtrusionScheduler.cpp

@@ -393,11 +393,21 @@ std::shared_ptr<ZSeamConfig> FeatureExtrusionScheduler::getZSeamConfig(const Fea
     case PrintFeatureType::Roof:
     case PrintFeatureType::Support:
     case PrintFeatureType::SkirtBrim:
-    case PrintFeatureType::Infill:
     case PrintFeatureType::SupportInfill:
     case PrintFeatureType::SupportInterface:
         return std::make_shared<ZSeamConfig>(EZSeamType::SHORTEST);
 
+    case PrintFeatureType::Infill:
+    {
+        const auto mesh_feature_extrusion = std::dynamic_pointer_cast<MeshFeatureExtrusion>(feature_extrusion);
+        assert(mesh_feature_extrusion && "The infill feature extrusion is not a MeshFeatureExtrusion instance");
+        if (mesh_feature_extrusion->getMesh()->settings.get<bool>("infill_randomize_start_location"))
+        {
+            return std::make_shared<ZSeamConfig>(EZSeamType::RANDOM);
+        }
+        break;
+    }
+
     case PrintFeatureType::MoveCombing:
     case PrintFeatureType::MoveRetraction:
     case PrintFeatureType::PrimeTower: