Legacy ImageMagick Discussions Archive

I want to apply this code, more or less:

convert test.png -matte -virtual-pixel transparent \ -distort ScaleRotateTranslate 1 *.png

to generate a series of images, each rotated 1 degree more than the previous one. So, I start with test.png which will be at 0 degrees, test1.png will be at 1 degree and so on until a 360 degrees rotation is done.

Like it is, it will do one image and that's all. I don't know how to make it run over the newly created images or apply a bigger rotation to the original image and create a new file everytime... and I assume both are possible?

sfg wrote:I want to apply this code, more or less:
Code: Select all
convert test.png -matte -virtual-pixel transparent \ -distort ScaleRotateTranslate 1 *.png
to generate a series of images, each rotated 1 degree more than the previous one. So, I start with test.png which will be at 0 degrees, test1.png will be at 1 degree and so on until a 360 degrees rotation is done.

Like it is, it will do one image and that's all. I don't know how to make it run over the newly created images or apply a bigger rotation to the original image and create a new file everytime... and I assume both are possible?

First -- you can not output to a 'wildcard' filename! That just does not make any sense

As for the series.. try this...

Code: Select all

for i in {000..359}
do   
    convert test.png -alpha on -virtual-pixel transparent \
                -distort ScaleRotateTranslate $i \
                rotated_$i.png
done

you need to write a script loop changing the rotation and resulting filename each iteration

anthony wrote:
First -- you can not output to a 'wildcard' filename! That just does not make any sense

Yeah, I know... I wanted to show that there should be different files.

As for the series.. try this...

Code: Select all

for i in {000..359}
do   
    convert test.png -alpha on -virtual-pixel transparent \
                -distort ScaleRotateTranslate $i \
                rotated_$i.png
done

I tried, but I get a "sintax error" for each line... except the convert one where it says it can't find the file.
Am I doing something wrong?

This is the image:

might it not be able to tell 000 from 0? that is 000 causes an error? or like in my old Mac OSX Tiger, that "for" sequence does not work and you have to use another looping method.

I'm using Windows, in case it matters... and I launched that from a bat file.

I tried replacing 000 with 0, but still the same.

In windows, the \ is replaced with ^

see http://www.imagemagick.org/Usage/windows/

but perhaps you have corrected for that.

Is your IM version current enough for -distort SRT?

Translated to Windows:

Code: Select all

for /L %%i in (0,1,359) DO (
  convert test.png -alpha on -virtual-pixel transparent ^
                -distort ScaleRotateTranslate %%i ^
                rotated_%%i.png
)

Still getting Syntax Error after

Code: Select all

for /L %%i in (0,1,359) DO (

I also tried putting everything in one line, but I get the same error...

Ah, it seems to work like this

Code: Select all

FOR /L %%i IN (0,1,359) DO convert test.png -alpha on -virtual-pixel transparent -distort ScaleRotateTranslate %%i rotated_%%i.png

Thanks for the help!

I am on Windows 7, IM version 6.6.3-0. You should paste my example into a batch file, then run it.

What version of Windows and IM are you on? (Type: convert -version)

What EXACT output do you get from the command file?

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