From e21e3896a2f510a47e47d0cfa751c9cab1af7fac Mon Sep 17 00:00:00 2001
From: Your Name <your.email@example.com>
Date: Mon, 6 Apr 2026 02:15:12 +0800
Subject: [PATCH] fix: smooth world splat camera dragging

---
 components/canvas/world3d/World3DViewer.tsx | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/components/canvas/world3d/World3DViewer.tsx b/components/canvas/world3d/World3DViewer.tsx
index 53643bda3..472772bbb 100644
--- a/components/canvas/world3d/World3DViewer.tsx
+++ b/components/canvas/world3d/World3DViewer.tsx
@@ -716,6 +716,11 @@ function WorldSplatScene({
         renderer,
         blurAmount: 0.18,
         maxStdDev: Math.sqrt(7),
+        originDistance: 0.85,
+        view: {
+          sortRadial: true,
+          sortDistance: 0.04,
+        },
       }),
     [renderer]
   );
@@ -728,7 +733,6 @@ function WorldSplatScene({
   useEffect(() => {
     sparkRenderer.frustumCulled = false;
     sparkRenderer.renderOrder = 10;
-    sparkRenderer.originDistance = 0.12;
     applySparkRevealProfile(sparkRenderer, splatMesh, SPLAT_NORMAL_PROFILE);
     return () => {
       sparkRenderer.removeFromParent();
@@ -780,9 +784,6 @@ function WorldSplatScene({
   }, [camera, groundPlaneOffset, onLoadStateChange, sparkRenderer, splatMesh]);
 
   useFrame(() => {
-    sparkRenderer.position.copy(camera.position);
-    sparkRenderer.updateMatrixWorld();
-
     const phase = revealPhaseRef.current;
     const revealElapsed =
       phase === "revealing"