From 3074c1f6ab26c540eb7e181e4da4237854df63df Mon Sep 17 00:00:00 2001
From: muwan <wanrumu@gmail.com>
Date: Fri, 22 Jul 2016 20:34:05 +0800
Subject: [PATCH 1/2] =?UTF-8?q?=E9=87=8A=E6=94=BE=E5=90=8E=E9=87=8D?=
 =?UTF-8?q?=E6=96=B0=E8=AE=A1=E7=AE=97r1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

修改了一下下，在第一次拖拽结束后，没有计算r1，导致第二次拖拽释放没有路线现实
---
 KYCuteViewDemo/KYCuteView.m | 37 ++++++++++++++++++++++---------------
 1 file changed, 22 insertions(+), 15 deletions(-)

diff --git a/KYCuteViewDemo/KYCuteView.m b/KYCuteViewDemo/KYCuteView.m
index 5044c1f..943d1dc 100755
--- a/KYCuteViewDemo/KYCuteView.m
+++ b/KYCuteViewDemo/KYCuteView.m
@@ -59,21 +59,7 @@ - (id)initWithFrame:(CGRect)frame {
 }
 
 - (void)displayLinkAction {
-    x1 = backView.center.x;
-    y1 = backView.center.y;
-    x2 = self.frontView.center.x;
-    y2 = self.frontView.center.y;
-    
-    centerDistance = sqrtf((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
-    if (centerDistance == 0) {
-        cosDigree = 1;
-        sinDigree = 0;
-    } else {
-        cosDigree = (y2 - y1) / centerDistance;
-        sinDigree = (x2 - x1) / centerDistance;
-    }
-    
-    r1 = oldBackViewFrame.size.width / 2 - centerDistance / self.viscosity;
+    [self countDistance];
     
     pointA = CGPointMake(x1 - r1 * cosDigree, y1 + r1 * sinDigree); // A
     pointB = CGPointMake(x1 + r1 * cosDigree, y1 - r1 * sinDigree); // B
@@ -158,6 +144,25 @@ - (void)setUp {
     [self.frontView addGestureRecognizer:pan];
 }
 
+- (void)countDistance
+{
+    x1 = backView.center.x;
+    y1 = backView.center.y;
+    x2 = self.frontView.center.x;
+    y2 = self.frontView.center.y;
+    
+    centerDistance = sqrtf((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
+    if (centerDistance == 0) {
+        cosDigree = 1;
+        sinDigree = 0;
+    } else {
+        cosDigree = (y2 - y1) / centerDistance;
+        sinDigree = (x2 - x1) / centerDistance;
+    }
+    
+    r1 = oldBackViewFrame.size.width / 2 - centerDistance / self.viscosity;
+}
+
 - (void)handleDragGesture:(UIPanGestureRecognizer *)ges {
     CGPoint dragPoint = [ges locationInView:self.containerView];
     
@@ -190,6 +195,8 @@ - (void)handleDragGesture:(UIPanGestureRecognizer *)ges {
                              }
                              completion:^(BOOL finished) {
                                  if (finished) {
+                                     [self countDistance];
+                                     
                                      [self.frontView reset];
                                      
                                      backView.hidden = YES;

From db9ebfd2c68a53c024b21ffc340d684f6894b91c Mon Sep 17 00:00:00 2001
From: muwan <wanrumu@gmail.com>
Date: Sat, 23 Jul 2016 19:00:57 +0800
Subject: [PATCH 2/2] =?UTF-8?q?=E5=9C=A8=E9=87=8A=E6=94=BE=E5=90=8E?=
 =?UTF-8?q?=E9=87=8D=E6=96=B0=E8=AE=A1=E7=AE=97=E8=B7=9D=E7=A6=BB?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

在释放后重新计算距离
---
 KYCuteViewDemo/KYCuteView.m | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/KYCuteViewDemo/KYCuteView.m b/KYCuteViewDemo/KYCuteView.m
index 943d1dc..c637c1d 100755
--- a/KYCuteViewDemo/KYCuteView.m
+++ b/KYCuteViewDemo/KYCuteView.m
@@ -195,8 +195,6 @@ - (void)handleDragGesture:(UIPanGestureRecognizer *)ges {
                              }
                              completion:^(BOOL finished) {
                                  if (finished) {
-                                     [self countDistance];
-                                     
                                      [self.frontView reset];
                                      
                                      backView.hidden = YES;
@@ -204,6 +202,7 @@ - (void)handleDragGesture:(UIPanGestureRecognizer *)ges {
                                      [shapeLayer removeFromSuperlayer];
                                      
                                      self.frontView.center = oldBackViewCenter;
+                                     [self countDistance];
                                      [self AddAniamtionLikeGameCenterBubble];
                                  }
                              }];