case 301://旋转90度——顺时针
        {
            _rorateNum++;
            
            [UIView animateWithDuration:0.5 animations:^{
                self.shaView.isSetShadow = NO;
            }];
            self.clipAreaLayer.hidden = YES;
            CGFloat dura = 1.0f;
            
            //旋转前：记录imgView与clipAreaLayer左边和底边的距离
            CGFloat preRoOffsetX = fabs(CGRectGetMaxY(self.imgView.frame)-self.clipAreaLayer.bottomEdge);
            CGFloat preRoOffsetY = fabs(CGRectGetMinX(self.imgView.frame)-self.clipAreaLayer.leftEdge);
            
            //旋转
            [UIView animateWithDuration:dura animations:^{
                CGAffineTransform trans = CGAffineTransformMakeRotation(_valueOffset);
                self.imgView.transform = trans;
            }];
            
            _valueOffset += M_PI_2;
            if (_rorateNum == kRotateNumMax) {
                _valueOffset = M_PI_2;
                _rorateNum = 0;
            }
            
            //切换坐标——imgView的frame自动修正
            [self changeXYWithRotation:_valueOffset];
            UIImage *agerImage = [self getRotatedImg];
            self.targetImg = agerImage;
            
            CGFloat temp = self.clipAreaWidth;
            self.clipAreaWidth = self.clipAreaHeight;
            self.clipAreaHeight = temp;
            CGFloat scale = [self drawClipArea];
//            [self setUpClipLayer:YES];
            
            //旋转后：调整imgView的位置——左变上，底变左
            self.imgView.frame = CGRectMake(self.clipAreaLayer.leftEdge-preRoOffsetX, self.clipAreaLayer.topEdge-preRoOffsetY, CGRectGetWidth(self.imgView.frame), CGRectGetHeight(self.imgView.frame));
            
            //缩放
            CABasicAnimation *baAniScale = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
            baAniScale.beginTime = dura;
            baAniScale.duration = dura;
            baAniScale.fromValue = @1;
            baAniScale.toValue = @(scale);
            [self.imgView.layer addAnimation:baAniScale forKey:nil