Hi All,

I didn't know the older forum was closed so after reading the Pat David's blog I ran here to register myself, however I didn't get this part of your terms:

Quote:The admins do their best to keep this forum fit for all ages, but, due to their European culture, they can come across as rather laid-back on some subjects and tight-fisted on others

Quote:We try to manage this forum as sensible adults, we expect members to be the same.

Debugging python-fu scripts

As Brian Kernighan wrote, "The most effective debugging tool is still careful thought, coupled with judiciously placed print statements.".

On Linux (and likely OSX) things are easy: if you start Gimp from a terminal, all the output from print statements in Python plugins will be displayed in the terminal.

But on Windows, the output of plain print statements cannot be seen, so you have two options:

Using gimp_message()

This is a simple method which is OK to diagnose small and local problems, but it is better used on code which is known to be mostly working.

• start the Error console dialog
  
• use gimp_message() instead of print (if the Error console dialog is not up, Gimp stops with a dialog for each use of gimp_message())
  
  

• by default Python doesn't look in the directory where your code is
  
• the registration code doesn't work in the python-fu console, if fact it makes it crash.
  
• taking the new version in account with minimal effort after editing the code
  
  

• while testing the function, comment out the register() and main() call in your python
  
• make sure your file name is a valid python identifier (no dashes in the name, for instance)
  
• start the python-fu console, make sure you have one single image loaded and enter:
  

• to run the function:
  

• if you edit the file, to reload the new version of the code:
  

• if your plugin function takes more parameters you have to provide them "manually". In most cases they will just be strings (text, but also file names, fonts, brushes,...) or numbers. The semi-difficult cases are layers and other images, because the parameter is an object, so you have to retrieve it with python code (obtain the other image in gimp.image_list(), for instance, or a drawable from image.layers and checking its name).
  
• to start afresh, just close and reopen the python console
  
• when done, don't forget to:
  • uncomment the registration code
    
  • remove the print statements... in Windows they can freeze your script if the total length of output is bigger than 4KB (because there is nothing to read it)
    

Hi,

First post on this forum.

I enjoy using GIMP.

I have a question about cropping and pasting as new layer.

When cropping a select part of an image using the fuzzy select tool and pasting it into a new layer, the layer boundary exceeds the cropped image size  - there is typically extra vertical space around the top and bottom of the cropped image.

This makes resizing particularly difficult because I cannot compare the actual size of the cropped image to that of other layers pasted into the image because of the extra space.

I can confirm that nothing else has been selected below the cropped image.

I use GIMP to crop photos of coins.
So I crop and paste side A of the coin.
I then crop and paste side B as a new layer. However GIMP adds extra space  around the image which makes resizing side B really hard. It would otherwise be as simple as resizing the layer/image of side B to match side A.

Any help would be appreciated as have not been able to work out why this is happening.

Peter

I used to be a  member (knotty) of the 'OLD' forum that went under. Wondered what happened! anyway a question. I'm inbetween Internet connections. So wondering if I can download the latest GIMP at a public computer (library) onto a flashdrive and then install it to my home computer?

Thanks! Carl

Hi! I'm a gimp newbie so sorry if this was already answered. I've been trying to animate pixel art on a 64 x 64 pixel canvas. My issue is that when I try and playback the animation it is really small. Is there a way of making playback larger or is the only solution to draw with more pixels?

My name is Luigi,


I'm studying GIMP and English to learn better GIMP.

From italy,

Google Translate.

Thanks.

I am a great believer in using the basic Gimp tools wherever possible, some easy to use 'effects' scripts quickly produce a result, but getting the same 'result' as everyone else, is not very creative.

However, sometimes scripts and plugins are a boost to productivity, especially when it comes to animations and the many-many layers that are involved. If you are really into animation then go for the old Gimp Animation Plugin/Package GAP. 

I do not really want that monster cluttering up my installation just for the very occasional animation project, so here are some scripts and plugins used in the demo video that might come in useful.

This one follow-path.py might only be needed once-in-a-while but it does save a lot of manual work. There are others that do similar.

http://www.arakne.es/en/2014/04/ 
http://www.arakne.es/wp-content/uploads/...-path5.zip

Saul Goodes page.
http://chiselapp.com/user/saulgoode/repo...pt-fu/home 

Worth bookmarking, lots of useful scripts including one to manage layer-groups. You can do it by hand but for more that a few layers, it becomes very tedious.
http://chiselapp.com/user/saulgoode/repo...roup-layer

Ofnuts plugins. 
http://sourceforge.net/projects/gimp-too...s/scripts/

If you need to merge two animations or add text then interleave-layers-0.4.py is very straight forward. 
Duplicating layers, various ways by hand but ofn-reorder-copy-layers.py speeds the process up.

Finally a little tool, does not do very much, I use it mainly for dumping layers to single png's with sensible numbered names. Nice simple plugin for renaming layers, anitools.py http://registry.gimp.org/node/25029

All of those in action.

Good day! I am new to this community and would like to ask something.

I am making an image which contains a glowing symbol in the middle. The black parts are seen as transparent for the engine I am going to load it. That's why I want the values from the black areas to remain at zero after switching from RGB to indexed ( 256 ) mode. Instead black becomes a dark green color.

However when I try this with a plain black image it remains black, so my guess is that the whole picture is affected by the glowing thing I made in the middle. How can I prevent this from happening? I am using GIMP 2.8.16 if that matters.

I just installed Gimp and the program opens in three separate disconnected pieces, the main screen and two palettes, toolbox and brushes.  I will attach a screenshot.  I can't dock the palettes onto the main program.

How do I connect it?

Attached Files

Thumbnail(s)
   

I was thinking about Seano's post where he is making an animation of the moon rotating around the earth. Lots and lots of layers for Gimp.

Art Of Illusion is a well established java application for ray-tracing/3D rendering and can output all the frames required for an animation. 

   

Too many / too large for a gif so here is a couple of orbits in a video.