Fix MSVC warning C4512 in KdTree and D3 classes.

warning C4512: '`anonymous-namespace'::TimeLog' : assignment operator
could not be generated.

Common/DataModel/vtkKdTree.cxx

@@ -90,6 +90,11 @@ public:
       vtkTimerLog::MarkEndEvent(event);
     }
   }
+
+private:
+  // Explicit disable copy/assignment to prevent MSVC from complaining (C4512)
+  TimeLog(const TimeLog&) = delete;
+  TimeLog& operator=(const TimeLog&) = delete;
 };
 }
 

Filters/Parallel/vtkPKdTree.cxx

@@ -80,6 +80,11 @@ public:
       vtkTimerLog::MarkEndEvent(event);
     }
   }
+
+private:
+  // Explicit disable copy/assignment to prevent MSVC from complaining (C4512)
+  TimeLog(const TimeLog&) = delete;
+  TimeLog& operator=(const TimeLog&) = delete;
 };
 }
 

Filters/ParallelMPI/vtkDistributedDataFilter.cxx

@@ -123,6 +123,11 @@ public:
       vtkTimerLog::MarkEndEvent(event);
     }
   }
+
+private:
+  // Explicit disable copy/assignment to prevent MSVC from complaining (C4512)
+  TimeLog(const TimeLog&) = delete;
+  TimeLog& operator=(const TimeLog&) = delete;
 };
 }