LLImageColor

llimageColor， get color from image's pixel or point

获取UIImage上某个点的颜色，类似与取色器...

Communication

1. If you found a bug, and can provide steps to reliably reproduce it, open an issue.
2. If you have a feature request, open an issue.
3. If you want to contribute, submit a pull request.

Usage

eg

UIImage *image = [UIImage imageNamed:@"b"];

CGFloat iwidth = CGRectGetWidth(self.view.frame);
CGFloat rota = iwidth / image.size.width;
CGFloat iheight = rota * image.size.height;

UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 100, iwidth, iheight)];
//    UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
imageView.backgroundColor = [UIColor redColor];
imageView.image = image;
[self.view addSubview:imageView];

_moveShowView = [[LLViewMoveShow alloc] initWithFrame:CGRectMake(0.0, 0.0, 100.0, 100.0)];
[_moveShowView setCircle];
[imageView addSubview:_moveShowView];

__weak LLViewMoveShow *weakMoveShow = _moveShowView;
weakMoveShow.centerPoint = ^(CGPoint point) {
    // 调整point的坐标，因为imageView，可能做了放大缩小等操作, 如果没有缩放图片，则不需要做一个rota处理
    point = CGPointMake(point.x / rota * 2, point.y / rota * 2);
    // 未缩放的模式
    //        point = CGPointMake(point.x * 2, point.y * 2);
    
    self.view.backgroundColor = [LLImageColorByPixel getImagePixelColorByCGImageRef:imageView.image.CGImage withPoint:point];
};
}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
	[_moveShowView touchesBegan:touches withEvent:event];
}

- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
	[_moveShowView touchesMoved:touches withEvent:event];
}