first commit

app/src/modules/builder/point/helpers/usePointSnapping.tsx

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+import { useCallback } from 'react';
+import { useAisleStore } from '../../../../store/builder/useAisleStore';
+import * as THREE from 'three';
+import { useWallStore } from '../../../../store/builder/useWallStore';
+
+const SNAP_THRESHOLD = 0.5; // Distance threshold for snapping in meters
+
+const CAN_SNAP = true; // Whether snapping is enabled or not
+
+export const usePointSnapping = (currentPoint: { uuid: string, pointType: string, position: [number, number, number] } | null) => {
+    const { aisles } = useAisleStore();
+    const { walls } = useWallStore();
+
+    const getAllOtherAislePoints = useCallback(() => {
+        if (!currentPoint) return [];
+
+        return aisles.flatMap(aisle =>
+            aisle.points.filter(point => point.pointUuid !== currentPoint.uuid)
+        );
+    }, [aisles, currentPoint]);
+
+    const getAllOtherWallPoints = useCallback(() => {
+        if (!currentPoint) return [];
+        return walls.flatMap(wall =>
+            wall.points.filter(point => point.pointUuid !== currentPoint.uuid)
+        );
+    }, [walls, currentPoint]);
+
+    const checkSnapForAisle = useCallback((position: [number, number, number]) => {
+        if (!currentPoint || !CAN_SNAP) return { position: position, isSnapped: false, snappedPoint: null };
+
+        const otherPoints = getAllOtherAislePoints();
+        const currentVec = new THREE.Vector3(...position);
+
+        for (const point of otherPoints) {
+            const pointVec = new THREE.Vector3(...point.position);
+            const distance = currentVec.distanceTo(pointVec);
+
+            if (distance <= SNAP_THRESHOLD && currentPoint.pointType === 'Aisle') {
+                return { position: point.position, isSnapped: true, snappedPoint: point };
+            }
+        }
+
+        return { position: position, isSnapped: false, snappedPoint: null };
+    }, [currentPoint, getAllOtherAislePoints]);
+
+    const checkSnapForWall = useCallback((position: [number, number, number]) => {
+        if (!currentPoint || !CAN_SNAP) return { position: position, isSnapped: false, snappedPoint: null };
+
+        const otherPoints = getAllOtherWallPoints();
+        const currentVec = new THREE.Vector3(...position);
+        for (const point of otherPoints) {
+            const pointVec = new THREE.Vector3(...point.position);
+            const distance = currentVec.distanceTo(pointVec);
+            if (distance <= SNAP_THRESHOLD && currentPoint.pointType === 'Wall') {
+                return { position: point.position, isSnapped: true, snappedPoint: point };
+            }
+        }
+        return { position: position, isSnapped: false, snappedPoint: null };
+    }, [currentPoint, getAllOtherWallPoints]);
+
+    return {
+        checkSnapForAisle,
+        checkSnapForWall,
+    };
+};