main repo

node_modules/react-remove-scroll/dist/es2019/pinchAndZoom.js

@@ -0,0 +1,33 @@
+const ds = (ab) => (ab[0] <= 0 && ab[1] >= 0) || (ab[0] >= 0 && ab[1] <= 0);
+const sign = (x) => (x < 0 ? -1 : 1);
+export const pinchOrZoom = (event, cache) => {
+    if (!event.changedTouches) {
+        return false;
+    }
+    if (event.touches.length === 2) {
+        const oldPoints = [cache[event.touches[0].identifier], cache[event.touches[1].identifier]];
+        const newPoints = [event.touches[0], event.touches[1]];
+        if (oldPoints[0] && oldPoints[1]) {
+            // Calculate the difference between the start and move coordinates
+            const diffx = [oldPoints[0].clientX - newPoints[0].clientX, oldPoints[1].clientX - newPoints[1].clientX];
+            const diffy = [oldPoints[0].clientY - newPoints[0].clientY, oldPoints[1].clientY - newPoints[1].clientY];
+            console.log(diffx, diffy);
+            if (ds(diffx) || ds(diffy)) {
+                return {
+                    action: 'zoom',
+                };
+            }
+            const mx = Math.max(Math.abs(diffx[0]), Math.abs(diffx[1]));
+            const my = Math.max(Math.abs(diffy[0]), Math.abs(diffy[1]));
+            return {
+                action: 'pinch',
+                coords: [mx * sign(diffx[0]), my * sign(diffx[1])],
+            };
+        }
+    }
+    Array.from(event.changedTouches).forEach((touch) => (cache[touch.identifier] = touch));
+    return {
+        action: 'move',
+        coords: [event.changedTouches[0].clientX, event.changedTouches[0].clientY],
+    };
+};