From 0b424c31ec0e411fb88cb507659324d74d5d6d25 Mon Sep 17 00:00:00 2001
From: Mitchell McCaffrey <mitchemmc@gmail.com>
Date: Tue, 16 Feb 2021 08:38:40 +1100
Subject: [PATCH] Added delete shortcut to remove last point from polygon fog

---
 src/components/map/MapFog.js | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/components/map/MapFog.js b/src/components/map/MapFog.js
index 39435c5..2695dc1 100644
--- a/src/components/map/MapFog.js
+++ b/src/components/map/MapFog.js
@@ -402,6 +402,28 @@ function MapFog({
     if (key === "Escape" && drawingShape) {
       setDrawingShape(null);
     }
+    // Remove last point from polygon shape if delete pressed
+    if (
+      (key === "Backspace" || key === "Delete") &&
+      drawingShape &&
+      toolSettings.type === "polygon"
+    ) {
+      if (drawingShape.data.points.length > 2) {
+        setDrawingShape((drawingShape) => ({
+          ...drawingShape,
+          data: {
+            ...drawingShape.data,
+            points: [
+              // Shift last point to previous point
+              ...drawingShape.data.points.slice(0, -2),
+              ...drawingShape.data.points.slice(-1),
+            ],
+          },
+        }));
+      } else {
+        setDrawingShape(null);
+      }
+    }
   }
 
   useKeyboard(handleKeyDown);