diff --git a/app/src/main/java/io/legado/app/ui/book/read/page/delegate/SimulationPageDelegate.kt b/app/src/main/java/io/legado/app/ui/book/read/page/delegate/SimulationPageDelegate.kt
index cdffc0457..ca4048c8d 100644
--- a/app/src/main/java/io/legado/app/ui/book/read/page/delegate/SimulationPageDelegate.kt
+++ b/app/src/main/java/io/legado/app/ui/book/read/page/delegate/SimulationPageDelegate.kt
@@ -484,8 +484,10 @@ class SimulationPageDelegate(pageView: PageView) : HorizontalPageDelegate(pageVi
     private fun calcPoints() {
         mTouchX = touchX
         mTouchY = touchY
+
         mMiddleX = (mTouchX + mCornerX) / 2
         mMiddleY = (mTouchY + mCornerY) / 2
+
         mBezierControl1.x =
             mMiddleX - (mCornerY - mMiddleY) * (mCornerY - mMiddleY) / (mCornerX - mMiddleX)
         mBezierControl1.y = mCornerY.toFloat()
@@ -496,6 +498,7 @@ class SimulationPageDelegate(pageView: PageView) : HorizontalPageDelegate(pageVi
         } else {
             mMiddleY - (mCornerX - mMiddleX) * (mCornerX - mMiddleX) / (mCornerY - mMiddleY)
         }
+
         mBezierStart1.x = mBezierControl1.x - (mCornerX - mBezierControl1.x) / 2
         mBezierStart1.y = mCornerY.toFloat()
         //固定左边上下两个点
@@ -504,24 +507,27 @@ class SimulationPageDelegate(pageView: PageView) : HorizontalPageDelegate(pageVi
                 if (mBezierStart1.x < 0)
                     mBezierStart1.x = viewWidth - mBezierStart1.x
 
-                val f1: Float = abs(mCornerX - mTouchX)
-                val f2: Float = viewWidth * f1 / mBezierStart1.x
+                val f1 = abs(mCornerX - mTouchX)
+                val f2 = viewWidth * f1 / mBezierStart1.x
                 mTouchX = abs(mCornerX - f2)
-                val f3: Float = abs(mCornerX - mTouchX) * abs(mCornerY - mTouchY) / f1
+                val f3 = abs(mCornerX - mTouchX) * abs(mCornerY - mTouchY) / f1
                 mTouchY = abs(mCornerY - f3)
 
                 mMiddleX = (mTouchX + mCornerX) / 2
                 mMiddleY = (mTouchY + mCornerY) / 2
+
                 mBezierControl1.x =
                     mMiddleX - (mCornerY - mMiddleY) * (mCornerY - mMiddleY) / (mCornerX - mMiddleX)
                 mBezierControl1.y = mCornerY.toFloat()
+
                 mBezierControl2.x = mCornerX.toFloat()
                 mBezierControl2.y = if ((mCornerY - mMiddleY).toInt() == 0) {
                     mMiddleY - (mCornerX - mMiddleX) * (mCornerX - mMiddleX) / 0.1f
                 } else {
                     mMiddleY - (mCornerX - mMiddleX) * (mCornerX - mMiddleX) / (mCornerY - mMiddleY)
                 }
-                mBezierStart1.x = (mBezierControl1.x - (mCornerX - mBezierControl1.x) / 2)
+
+                mBezierStart1.x = mBezierControl1.x - (mCornerX - mBezierControl1.x) / 2
             }
         }
         mBezierStart2.x = mCornerX.toFloat()