add 2d selection and delete

app/src/store/simulation/useSimulationStore.ts

@@ -276,4 +276,40 @@ export const useComparisonProduct = create<ComparisonProductState>()(
             });
         },
     }))
+);
+
+interface SelectedPointsState {
+    selectedPoints: THREE.Object3D[];
+    setSelectedPoints: (points: THREE.Object3D[]) => void;
+    addSelectedPoint: (point: THREE.Object3D) => void;
+    removeSelectedPoint: (uuid: string) => void;
+    clearSelectedPoints: () => void;
+}
+
+export const useSelectedPoints = create<SelectedPointsState>()(
+    immer((set) => ({
+        selectedPoints: [],
+        setSelectedPoints: (points) => {
+            set((state) => {
+                state.selectedPoints = points;
+            });
+        },
+        addSelectedPoint: (point) => {
+            set((state) => {
+                if (!state.selectedPoints.find(p => p.uuid === point.uuid)) {
+                    state.selectedPoints.push(point);
+                }
+            });
+        },
+        removeSelectedPoint: (uuid) => {
+            set((state) => {
+                state.selectedPoints = state.selectedPoints.filter(p => p.uuid !== uuid);
+            });
+        },
+        clearSelectedPoints: () => {
+            set((state) => {
+                state.selectedPoints = [];
+            });
+        },
+    }))
 );