iOS图像处理之裁剪
两行代码而已
CGRect cutRect = CGRectMake(originImage.size.width/2, originImage.size.height/2, originImage.size.width/2, originImage.size.height/2);
UIImage *cutImage = [UIImage p_w_picpathWithCGImage:CGImageCreateWithImageInRect([originImage CGImage], cutRect)];