CarrierWave + RMagick Square Crop？ [英] CarrierWave + RMagick Square Crop?

问题描述

我正在尝试使用Ruby on Rails，CarrierWave和RMagick进行固定的方形图像裁剪。

I am trying to make a fixed square image crop with Ruby on Rails, CarrierWave, and RMagick.

我已经尝试了以下两种情况但没有运气。 。

I have tried both of the following with no luck...

version :thumb do
  process :resize_to_fit => [200, 200]
end

和

version :thumb do
  process :resize_to_limit => [200, 200]
end

resize_to_limit显然调整图像大小以适应指定的尺寸同时保留原始宽高比。所以这不对，但resize_to_fit也没有这样做。我正在查看所有可用的实例方法此处。

resize_to_limit obviously resizes the image to fit within the specified dimensions while retaining the original aspect ratio. So that's not right, but resize_to_fit doesn't do it either. I am looking at all of the available of the instance methods here.

我希望能够上传任何宽高比和尺寸的图片，它将以200x200的形式出现。

I want to be able to upload a picture of any aspect ratio and dimensions and it will come out at 200x200.

推荐答案

终于搞定了！在尝试了一系列不同的自定义图像处理功能和手动裁剪之后，它实际上就像我希望的那样简单......

Finally got this! After trying a bunch of different custom image manipulation functions and manual cropping it's actually as simple as I had hoped for...

process :resize_to_fill => [400, 400]

从原始图像的直接中心将其裁剪为400x400平方。

Crops it into a 400x400 square from the direct center of the original image.

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