fix: the ParticleSystem's localPosition drifts at certain scales due …

…to floating-point precision issues close #299, close #312
mob-sakai · May 24, 2024 · a9c2b19 · a9c2b19
1 parent fc3fbdd
commit a9c2b19
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/Packages/src/Runtime/UIParticleRenderer.cs b/Packages/src/Runtime/UIParticleRenderer.cs
@@ -614,6 +614,8 @@ private void Simulate(Vector3 scale, bool paused)
             // get world position.
             var isLocalSpace = _particleSystem.IsLocalSpace();
             var psTransform = _particleSystem.transform;
+            var originLocalPosition = psTransform.localPosition;
+            var originLocalRotation = psTransform.localRotation;
             var originWorldPosition = psTransform.position;
             var originWorldRotation = psTransform.rotation;
             var emission = _particleSystem.emission;
@@ -636,7 +638,8 @@ private void Simulate(Vector3 scale, bool paused)
                 : originWorldPosition.GetScaled(scale.Inverse());
             psTransform.SetPositionAndRotation(scaledPos, originWorldRotation);
             _particleSystem.Simulate(deltaTime, false, false, false);
-            psTransform.SetPositionAndRotation(originWorldPosition, originWorldRotation);
+            psTransform.localPosition = originLocalPosition;
+            psTransform.localRotation = originLocalRotation;
         }
 
 #if UNITY_EDITOR