round scroll event offset

squarenotsquare/src/components/ScrollingPicker.js

@@ -14,9 +14,10 @@ function ScrollingPicker(props) {
   const scrollX = useRef(new Animated.Value(0)).current;
 
   function onScroll(event){
-    if (event.nativeEvent.contentOffset.x === 0) {
+    let rounded = Math.round(event.nativeEvent.contentOffset.x);
+    if (rounded === 0) {
       props.modeSetter('square');
-    } else if (event.nativeEvent.contentOffset.x === (Metrics.icons.buttonIcon * 2)) {
+    } else if (rounded === (Metrics.icons.buttonIcon * 2)) {
       props.modeSetter('addition');
     }
     Animated.event([