#+title: ImageMagick Snippets
#+pubdate: <2020-08-03>

*NB:* The convert command is deprecated in IMv7, use "magick" instead of "convert" or "magick convert"

inspo sites:

- http://www.fmwconcepts.com/imagemagick/index.php
- http://im.snibgo.com/

** Rotate a tiled image 45 degrees

Better results with square images, of course. The ~45~ is the degree amount.

#+begin_src sh
magick in.png -matte -virtual-pixel tile +distort ScaleRotateTranslate '1  1  45' out.png
#+end_src

** Stack images vertically

#+begin_src sh
magick 1.jpg 2.jpg 3.jpg -gravity center -append out.jpg
#+end_src

** Create a solid color image

#+begin_src sh
magick -size 100x100 "xc:#cccccc" out.png
#+end_src

** Rotate a tiled image an arbitrary degree

see also: [[https://github.com/neeasade/dotfiles/blob/master/bin/bin/tiletilt][tiletilt]]

#+begin_src sh
tile="some_file.png"
angle=$((RANDOM % 360))
w=1920
h=1080

magick "$tile" -set option:distort:viewport "${w}x${h}" \
    -virtual-pixel tile -filter point \
    -distort SRT "$angle" \
    -gravity center -crop "${w}x${h}+0+0" +repage \
    "result.png"
    #+end_src
#+RESULTS: