fix: Arrow with angle jittering

Signed-off-by: Mark Tolmacs <mark@lazycat.hu>

packages/element/src/linearElementEditor.ts

@@ -1569,7 +1569,9 @@ export class LinearElementEditor {
     const updatedOriginPoint =
       pointUpdates.get(0)?.point ?? pointFrom<LocalPoint>(0, 0);
 
-    const [offsetX, offsetY] = updatedOriginPoint;
+    // Handle non-normalized points
+    const offsetX = element.points[0][0] - updatedOriginPoint[0];
+    const offsetY = element.points[0][1] - updatedOriginPoint[1];
 
     const nextPoints = isElbowArrow(element)
       ? [
@@ -1586,7 +1588,14 @@ export class LinearElementEditor {
             idx !== points.length - 1 &&
             !pointUpdates.has(idx)
           ) {
-            return pointFrom<LocalPoint>(current[0], current[1]);
+            return current;
+          }
+
+          // Since we're subtracting the offset coming from the first point
+          // from all other points, we need to skip the first point here to avoid
+          // double-subtracting the offset.
+          if (idx === 0) {
+            return pointFrom<LocalPoint>(0, 0);
           }
 
           return pointFrom<LocalPoint>(

packages/excalidraw/components/Stats/index.tsx

@@ -4,7 +4,7 @@ import throttle from "lodash.throttle";
 import { useEffect, useMemo, useState, memo } from "react";
 
 import { STATS_PANELS } from "@excalidraw/common";
-import { getCommonBounds, isBindingElement } from "@excalidraw/element";
+import { getCommonBounds } from "@excalidraw/element";
 import { getUncroppedWidthAndHeight } from "@excalidraw/element";
 import { isImageElement } from "@excalidraw/element";
 
@@ -333,16 +333,14 @@ export const StatsInner = memo(
                           appState={appState}
                         />
                       </StatsRow>
-                      {!isBindingElement(singleElement) && (
-                        <StatsRow>
-                          <Angle
-                            property="angle"
-                            element={singleElement}
-                            scene={scene}
-                            appState={appState}
-                          />
-                        </StatsRow>
-                      )}
+                      <StatsRow>
+                        <Angle
+                          property="angle"
+                          element={singleElement}
+                          scene={scene}
+                          appState={appState}
+                        />
+                      </StatsRow>
                       <StatsRow>
                         <FontSize
                           property="fontSize"

packages/excalidraw/data/restore.ts

@@ -1,4 +1,4 @@
-import { isFiniteNumber, pointFrom, pointRotateRads } from "@excalidraw/math";
+import { isFiniteNumber, pointFrom } from "@excalidraw/math";
 
 import {
   DEFAULT_FONT_FAMILY,
@@ -20,7 +20,6 @@ import {
 } from "@excalidraw/common";
 import {
   calculateFixedPointForNonElbowArrowBinding,
-  elementCenterPoint,
   getNonDeletedElements,
   isPointInElement,
   isValidPolygon,
@@ -393,35 +392,14 @@ export const restoreElement = (
         ...getSizeFromPoints(points),
       });
     case "arrow": {
-      const {
-        startArrowhead = null,
-        endArrowhead = "arrow",
-        angle = 0,
-      } = element;
+      const { startArrowhead = null, endArrowhead = "arrow" } = element;
       const x: number | undefined = element.x;
       const y: number | undefined = element.y;
-      let points: readonly LocalPoint[] | undefined = // migrate old arrow model to new one
+      const points: readonly LocalPoint[] | undefined = // migrate old arrow model to new one
         !Array.isArray(element.points) || element.points.length < 2
           ? [pointFrom(0, 0), pointFrom(element.width, element.height)]
           : element.points;
 
-      if (angle !== 0) {
-        points = LinearElementEditor.getPointsGlobalCoordinates(
-          element,
-          elementsMap,
-        ).map((point) =>
-          LinearElementEditor.pointFromAbsoluteCoords(
-            element as ExcalidrawArrowElement,
-            pointRotateRads(
-              point,
-              elementCenterPoint(element, elementsMap),
-              angle,
-            ),
-            elementsMap,
-          ),
-        );
-      }
-
       const base = {
         type: element.type,
         startBinding: repairBinding(
@@ -443,7 +421,6 @@ export const restoreElement = (
         y,
         elbowed: (element as ExcalidrawArrowElement).elbowed,
         ...getSizeFromPoints(points),
-        angle: 0 as Radians,
       };
 
       // TODO: Separate arrow from linear element