Added a grid snapping sensitivity accessibility option

src/hooks/useGridSnapping.js

@@ -9,13 +9,20 @@ import {
   getCellCorners,
 } from "../helpers/grid";
 
+import useSetting from "./useSetting";
+
 import { useGrid } from "../contexts/GridContext";
 
 /**
  * Returns a function that when called will snap a node to the current grid
- * @param {number} snappingThreshold 1 = Always snap, 0 = never snap
+ * @param {number=} snappingSensitivity 1 = Always snap, 0 = never snap if undefined the default user setting will be used
  */
-function useGridSnapping(snappingThreshold) {
+function useGridSnapping(snappingSensitivity) {
+  const [defaultSnappingSensitivity] = useSetting(
+    "map.gridSnappingSensitivity"
+  );
+  snappingSensitivity = snappingSensitivity || defaultSnappingSensitivity;
+
   const { grid, gridOffset, gridCellPixelSize } = useGrid();
 
   /**
@@ -57,7 +64,7 @@ function useGridSnapping(snappingThreshold) {
       const distanceToSnapPoint = Vector2.distance(offsetPosition, snapPoint);
       if (
         distanceToSnapPoint <
-        Vector2.min(gridCellPixelSize) * snappingThreshold
+        Vector2.min(gridCellPixelSize) * snappingSensitivity
       ) {
         // Reverse grid offset
         let offsetSnapPoint = Vector2.add(snapPoint, gridOffset);