New IO structure, unexpexted error in C code

源代码/StgSharp/Geometries/PlainGeometry/Arc.cs

@@ -1,9 +1,5 @@
 using StgSharp.Math;
 using System;
-using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
-using System.Runtime.CompilerServices;
-using System.Text;
 
 namespace StgSharp.Geometries
 {
@@ -30,7 +26,7 @@ namespace StgSharp.Geometries
 
         internal override void OnRender(uint tick)
         {
-            tick-= bornTick;
+            tick -= bornTick;
             center.Position = refOrigin.Position + MoveCenter(tick);
             beginPoint.Position = refOrigin.Position + MovBegin(tick);
             endPoint.Position = refOrigin.Position + MovEnd(tick);
@@ -40,7 +36,7 @@ namespace StgSharp.Geometries
 
         public override Plain GetPlain()
         {
-            return new Plain(this.center,this.beginPoint,this.endPoint);
+            return new Plain(this.center, this.beginPoint, this.endPoint);
         }
     }
 }