added breaking of tangent handle lines by holding 'Alt' key when moving

1 files changed, 3 insertions, 3 deletions

diff --git a/src/client/views/InkStrokeProperties.ts b/src/client/views/InkStrokeProperties.ts
index a5c028730..812e8ff6e 100644
--- a/src/client/views/InkStrokeProperties.ts
+++ b/src/client/views/InkStrokeProperties.ts
@@ -220,15 +220,15 @@ export class InkStrokeProperties {
      */
     @undoBatch
     @action
-    moveHandle = (deltaX: number, deltaY: number, handleIndex: number) =>
+    moveHandle = (deltaX: number, deltaY: number, handleIndex: number, brokenIndices: number[]) =>
         this.applyFunction((doc: Doc, ink: InkData, xScale: number, yScale: number) => {
             const order = handleIndex % 4;
             const oldHandlePoint = ink[handleIndex];
             const newHandlePoint = { X: ink[handleIndex].X - deltaX / xScale, Y: ink[handleIndex].Y - deltaY / yScale };
             ink[handleIndex] = newHandlePoint;
             
-            // Rotating opposite handle (first and final control point only have one handle).
-            if (handleIndex !== 1 && handleIndex !== ink.length - 2) {
+            // Rotate opposite handle if user hasn't held 'Alt' key or not first/final control (which have only 1 handle).
+            if (!brokenIndices.includes(handleIndex) && handleIndex !== 1 && handleIndex !== ink.length - 2) {
                 let oppositeHandlePoint = order === 1 ? ink[handleIndex - 3] : ink[handleIndex + 3];
                 const controlPoint = order === 1 ? ink[handleIndex - 1] : ink[handleIndex + 1];
                 const angle = this.angleChange(oldHandlePoint, newHandlePoint, controlPoint);