#import "JKZhuanPanTopBtnsView.h"
CGFloat const topBtnsHeight = 400.0f;
@interface JKZhuanPanTopBtnsView ()
/**<#condition#>*/
@property (nonatomic,strong)UIView * tempView;
@property (nonatomic,assign) float angle;
@end
@implementation JKZhuanPanTopBtnsView
CGAffineTransform GetCGAffineTransformRotateAroundPoint(float centerX, float centerY ,float x ,float y ,float angle)
{
x = x - centerX; //计算(x,y)从(0,0)为原点的坐标系变换到(CenterX ，CenterY)为原点的坐标系下的坐标
y = y - centerY; //(0，0)坐标系的右横轴、下竖轴是正轴,(CenterX,CenterY)坐标系的正轴也一样
CGAffineTransform trans = CGAffineTransformMakeTranslation(x, y);
trans = CGAffineTransformRotate(trans,angle);
trans = CGAffineTransformTranslate(trans,-x, -y);
return trans;
}
- (instancetype)initWithFrame:(CGRect)frame {
if (self == [super initWithFrame:frame]) {
self.backgroundColor = [UIColor redColor];
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0,0 , 50, 50)];
view.center = self.center;
view.backgroundColor = [UIColor greenColor];
[self addSubview:view];
self.tempView = view;
self.angle = 45.0/180.0*M_PI;
}
return self;
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
float centerX = self.tempView.bounds.size.width/2;
float centerY = self.tempView.bounds.size.height/2;
// float centerX = self.bounds.size.width/2;
// float centerY = self.bounds.size.height/2;
// float x = self.tempView.bounds.size.width/2;
// float y = self.tempView.bounds.size.height;
float x = 50;
float y = 50;
CGAffineTransform trans = GetCGAffineTransformRotateAroundPoint(centerX,centerY ,x ,y ,self.angle);
self.angle += 45.0/180.0*M_PI;
self.tempView.transform = CGAffineTransformIdentity;
self.tempView.transform = trans;
}
/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
// Drawing code
}
*/
@end