Am using Gimp on Linux, and can run scripts from
./gimp-2.2/scripts but using the script-FU Console
and its Procedure Browser I have trouble with.
I'm assumimg operations within the Console are
interactive with the currently loaded image(s)
or xcf.
Simple commands work, using 'Apply' from the
Procedure Browser screen, like;
=> (gimp-version)
("2.2.8")
>From there on, I have difficulty understanding the
Return Values, and the requirements for the
function parameters suchs as; CHANNELS,
DRAWABLE.
Like in the following, which the Procedure Browser
says should be;
num_images INT32 The number of Images open
image_ids INT32ARRAY The list of images currently open
=> (gimp-image-list)
(1 #(2)#1"02")
so, #(2)#1"02"
is a single entry array of the image ID ?
How should I interpret this sequence ?
So I try another command;
=> (gimp-image-height image)
ERROR: unbound variable (errobj image)
=> (gimp-image-height 1)
ERROR: Procedural database execution failed:
(gimp_image_height 1)
=> (gimp-image-height 2)
(600)
So the #(2) part of (gimp-image-list) can be
used successfully for the "image" parameter.
This is not explained in the procedure Browser info.
OK, so try another command from the Procedure Browser,
=> (gimp-drawable-bpp drawable)
ERROR: unbound variable (errobj drawable)
Now how is "drawable" to be defined ?
While Scheme and discrete Script-FU scripts are covered
well in the Gimp-Manual and other documentation, I
feel that the operation of the Script-FU Procedure Browser,
and the function parameters and retrurn Vaklues in particular,
are a little under-documented.
If someone could give me an example of using the
Script-FU Console to work gimp-drawable-set-pixel
that would be great. I am presently stumped with an
explanation of 'drawable'.
But any help, comments, suggestions or references
most welcome.
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