From 7b02207537d35bfa1714bf8beafc921f717d100a Mon Sep 17 00:00:00 2001
From: 单军华
Date: Wed, 11 Jul 2018 10:47:42 +0800
Subject: [PATCH] 首次上传
---
screendisplay/screendisplay/Classes/ThirdClass/JHChart/JHPieForeBGView.m | 56 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/screendisplay/screendisplay/Classes/ThirdClass/JHChart/JHPieForeBGView.m b/screendisplay/screendisplay/Classes/ThirdClass/JHChart/JHPieForeBGView.m
new file mode 100755
index 0000000..5e9337d
--- /dev/null
+++ b/screendisplay/screendisplay/Classes/ThirdClass/JHChart/JHPieForeBGView.m
@@ -0,0 +1,56 @@
+//
+// JHPieForeBGView.m
+// JHCALayer
+//
+// Created by cjatech-������ on 16/4/28.
+// Copyright �� 2016��� JH. All rights reserved.
+//
+
+#import "JHPieForeBGView.h"
+
+@implementation JHPieForeBGView
+
+-(void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
+
+ [self touchesBegan:touches withEvent:event];
+}
+
+
+-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
+
+ UITouch *touch = [touches anyObject];
+
+ CGPoint p = [touch locationInView:self];
+
+
+
+ if ((p.x-self.frame.size.width/2)*(p.x-self.frame.size.width/2) + (p.y-self.frame.size.height/2)*(p.y-self.frame.size.height/2) >self.frame.size.height*self.frame.size.height) {
+ return;
+ }
+
+
+ /* ���������������block������ */
+ CGFloat aLen2 = (p.x - self.frame.size.width/2)*(p.x - self.frame.size.width/2) + (p.y - self.frame.size.width/2)*(p.y - self.frame.size.width/2);
+ CGFloat aLen = sqrt(aLen2);
+
+ CGFloat cLen2 =self.frame.size.width/2 * self.frame.size.width/2;
+ CGFloat cLen = self.frame.size.width/2;
+
+ CGFloat bLen2 = (p.x - self.frame.size.width)*(p.x - self.frame.size.width) + (p.y - self.frame.size.width/2)*(p.y - self.frame.size.width/2);
+
+
+ CGFloat angle = acos((aLen2 + cLen2 -bLen2)/2/aLen/cLen);
+
+ if (p.y<self.frame.size.height/2) {
+ angle = M_PI*2 -angle;
+
+ }
+ if (self.select) {
+ self.select(angle,p);
+ }
+
+}
+
+
+
+@end
--
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