feat(control): opt code

galacean · Jun 8, 2021 · 6f11a70 · 6f11a70
1 parent 47c8267
commit 6f11a70
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/packages/controls/src/OrthoControl.ts b/packages/controls/src/OrthoControl.ts
@@ -47,7 +47,11 @@ export class OrthoControl extends Script {
 
     if (this._isPanStart) {
       const { _panStart: panStart, _panEnd: panEnd } = this;
-      Vector2.subtract(panEnd, panStart, this._panDelta);
+      const panDelta = this._panDelta;
+      Vector2.subtract(panEnd, panStart, panDelta);
+      if (panDelta.x === 0 && panDelta.y === 0) {
+        return ;
+      }
       this._handlePan();
       panEnd.cloneTo(panStart);
     }