Resize-bend-resize script

[darkfrei]

Hi all!

I know how resize, but what tool I can use for bending?

Now I need make a lot of images like that (magenta is for position):
Original image for example

image-01.png

Resize to 200x200

image-02.png (200x200 px)

Bend this image to (it's also 200x200)

image-03.png (200x200 px)

And resize it back to 20x20

image-04.png (20x20 px)

[GeeMack]

I know how resize, but what tool I can use for bending?

You can use "-distort arc" to accomplish that. This command will do the 90° bend...

Code: Select all

convert input.png -background none -virtual-pixel none -distort arc "90 45 200 0" -shave 1 result.png

Learn more about using "-distort arc" to make bends and curves at THIS link.

You may want to use "-scale" rather than "-resize" to scale up before the distort to avoid aliasing. If you're using IM version 7 use "magick" instead of "convert".

[darkfrei]

Thanks, GeeMack!

I've also found another link http://www.imagemagick.org/Usage/mapping/#circlar_arc and trying to undertand it.

[darkfrei]

This part is too complicated:

Code: Select all

magick image-02.png -background none ^
 -gravity East -extent 400x200 ^
 -virtual-pixel none -distort Arc 180 image-180.png

Here I take image-02.png (200x200 px), add another 200 pixels on the left (west) side.
But -distort makes this picture as 456x229 px


image-180.png (456x229)

[darkfrei]

Looks amazing! Exactly what I want. For 32 pixels here is distort "...320...".

Code: Select all

magick "Input/*.png" ^
 -scale 1000%% ^
 -background none ^
 -virtual-pixel none ^
 -distort arc "90 45 320 0" -shave 1 ^
 -scale 10%% ^
 Output/bend_90_%%04d.png
pause

[darkfrei]

Another question, but for the same project:
How to make from one image a lot of them but with shift? By paint dot net it calls "panelling", but it's very big work.
So I want to make from this picture 32x32:


this spritesheet with 32 elements, every sprite was shifted one pixel to the right.

[GeeMack]

this spritesheet with 32 elements, every sprite was shifted one pixel to the right.

Try this...

Code: Select all

magick sprite1.png -duplicate 31 -roll +%[fx:t]+0 -append +repage sprites32.png