From bf587070cccd344f5e8817e9954ba9f2e46b81bb Mon Sep 17 00:00:00 2001
From: Bez <tungluong2809@gmail.com>
Date: Mon, 20 Jan 2025 21:13:43 +0700
Subject: [PATCH] fix(rotation): support cycling rotateViewportCCW (#4533)

---
 extensions/cornerstone/src/commandsModule.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extensions/cornerstone/src/commandsModule.ts b/extensions/cornerstone/src/commandsModule.ts
index 229281ee2..cc9bee66e 100644
--- a/extensions/cornerstone/src/commandsModule.ts
+++ b/extensions/cornerstone/src/commandsModule.ts
@@ -569,7 +569,7 @@ function commandsModule({
       } else if (viewport.getRotation !== undefined) {
         const presentation = viewport.getViewPresentation();
         const { rotation: currentRotation } = presentation;
-        const newRotation = (currentRotation + rotation) % 360;
+        const newRotation = (currentRotation + rotation + 360) % 360;
         viewport.setViewPresentation({ rotation: newRotation });
         viewport.render();
       }