要求RMagick向ImageMagick发送直接命令 [英] Ask RMagick to send a direct command to ImageMagick

问题描述

RMagick不支持ImageMagick的某些选项.同样有时候使用ImageMagick实际上更方便.是否有(图像对象的)方法可以让您使用命令行界面将命令直接发送到ImageMagick?

Some options of ImageMagick are not supported by RMagick. Also sometimes it is in fact more convenient to use ImageMagick. Is there a method (of the Image object) that allows you to send commands directly to ImageMagick using the command line interface?

推荐答案

您可以通过反引号(或类似符号)使用system或系统调用吗?

Would it be ok for you to use system or system call via backticks (or similar)?

您也可以扩展Magick::Image使其更容易.

You may also extend Magick::Image to do it easier.

我的示例代码添加了一种方法convert，以调用imagemagick的convert-command来获取实际图像.必须添加要执行的操作.

My example code add a method convert to call the convert-command of imagemagick for the actual image. The action to be performed must be added.

require 'rmagick'
module Magick
  class Image
      def convert( cmd )
        `convert #{self.filename} #{cmd}` 
      end
  end
end

picname = Dir['*.jpg'].first
img = Magick::Image.read(picname).first

img.convert('x.png')

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