CODEWITHSUNDEEP
image-processingimagemagick
Auh
Auh

Reputation: 145

Imagemagick: compose 2 images where 1 wraps the other

I want to make a wrapping image or gif that when composed with a different image will wrap it like the wrapping image.

For example combining these two images:

enter image description here

enter image description here

Would yield this image

enter image description here

I don't want an imagemagick command that does this specific movement of pixels because then it wouldn't be modular.

Upvotes: 0

Views: 88

Answers (1)

fmw42
fmw42

Reputation: 53081

Here is one way in Imagemagick using the -roll function. But unfortunately it does not use percent. So I have to do a separate computation in IM 6 to convert percent to pixels. In IM 7 it could be done in one command apart from setting the pct overlap and split.

Here I cut the image into 3 sections (33% each, though different amounts could be used). And then roll the middle sections by 33% to the right with wrap around.

IM 6

pct=33
rollx=`convert palmtree.png -format "%[fx:round($pct*w/100)]" info:`
convert palmtree.png \( -clone 0 -gravity north -crop 100%x$pct%+0+0 +repage \) \( -clone 0 -gravity center -crop 100%x$pct%+0+0 +repage -roll +${rollx}+0 \) \( -clone 0 -gravity south -crop 100%x$pct%+0+0 +repage \) -delete 0 -append result.png

IM 7

pct=33
magick palmtree.png -set option:rollx "%[fx:round($pct*w/100)]" \( -clone 0 -gravity north -crop 100%x$pct%+0+0 +repage \) \( -clone 0 -gravity center -crop 100%x$pct%+0+0 +repage -roll +[rollx]+0 \) \( -clone 0 -gravity south -crop 100%x$pct%+0+0 +repage \) -delete 0 -append result.png

enter image description here

If you do not want 33% for all, then change the pct to whatever percent you want for each part and for the roll as desired. If you want to use multiple images, then replace each -clone with the actual image you want.

Upvotes: 1

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