From IM Distort to GM?

Hi!

I’m trying to move a script from using IM to GM and stumbled over
“-compose Distort” not existing in GM. How could the following be
translated?

convert in.png
  -resize $template_size\! \
  -matte "distortion_map.png" \
  -compose Distort -composite "out.png"

I found -displace, but it doesn’t work with just distortion_map.png as
argument. Also, it’s relative, not absolute, rigth?

In other words, how can I distort an image with GM via a combined X/Y
absolute distortion map?


-- 
Thorsten Wilms <[email protected]>


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