SectionTemlate was added

Windows/ViewModels/Forces/ForceCombinationViewModel.cs

@@ -21,6 +21,40 @@ namespace StructureHelper.Windows.ViewModels.Forces
                 combinationList.Name = value;
             }
         }
+
+        public bool SetInGravityCenter
+        {
+            get => combinationList.SetInGravityCenter;
+            set
+            {
+                combinationList.SetInGravityCenter = value;
+                OnPropertyChanged(nameof(SetInGravityCenter));
+                OnPropertyChanged(nameof(CoordEnable));
+            }
+        }
+
+        public bool CoordEnable => !SetInGravityCenter;
+
+        public double CenterX
+        {
+            get => combinationList.ForcePoint.X;
+            set
+            {
+                combinationList.ForcePoint.X = value;
+                OnPropertyChanged(nameof(CenterX));
+            }
+        }
+
+        public double CenterY
+        {
+            get => combinationList.ForcePoint.Y;
+            set
+            {
+                combinationList.ForcePoint.Y = value;
+                OnPropertyChanged(nameof(CenterY));
+            }
+        }
+
         public IEnumerable<IDesignForceTuple>  ForceTuples { get => combinationList.DesignForces; }
 
         public ForceCombinationViewModel(IForceCombinationList combinationList)