if crop the image with width and aspect ration, how to define from the center/top/down as the position to crop? Thanks.

[hanweifish]

Subject of the issue

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Your environment

• Operating system
  • [ ] Mac
  • [ ] Windows
  • [ ] Linux
• Node.js version (node --version)
  • [ ] Node.js v4.x
  • [ ] Node.js v6.x
• ImageMagick version (identify -version)
  • [ ] ImageMagick v6.9.x
  • [ ] ImageMagick v7.0.x
• s3-uploader version
  • [ ] v0.x
  • [ ] v1.x
  • [ ] v2.x

Steps to reproduce

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Expected behaviour

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Actual behaviour

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// log outoput or error messages here

[Starefossen]

This is not currently possible. s3-uploader chooses the best centered crop. Pull Requests are welcome, though 👍🏼