Re: [Gimp-developer] Gimp - prolog interface
Thanks, I believe Python is the solution I was looking for. But if you really wanted to use Prolog, surely Python is quite far from that? Or is there some extension or whatever to Python that allows one to write Prolog-like clauses, a Python-hosted Prolog in a way? (Apparently, yes, there are several, see for instance http://code.activestate.com/recipes/303057/ , http://christophe.delord.free.fr/pylog/index.html and and http://codespeak.net/pypy/extradoc/paper/prolog-in-python.pdf ) --tml ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] Gimp - prolog interface
js, Thanks, I believe Python is the solution I was looking for. - Ryan --- On Thu, 12/3/09, Joao S. O. Bueno gwid...@mpc.com.br wrote: From: Joao S. O. Bueno gwid...@mpc.com.br Subject: Re: [Gimp-developer] Gimp - prolog interface To: Ryan Eisele ryaneisele...@yahoo.com Cc: gimp-developer@lists.xcf.berkeley.edu Date: Thursday, December 3, 2009, 1:15 PM Hi Ryan - I strongly suggest you learn python instead, and us it for your scripts, instead. It attends eveeryone of yoru requisites: - no dealing with pointers or memory allocation/deallocation - gimp data structures are provided as high level objects - the language syntax even allows for a funciotnal-like programing if you prefer that. (for example to interact through layers, you just do: image = gimp.list_images()[0] for layer in image.layers: #your code dealing with the layer object When you get to the pixels you have then as a byte sequence, you then convert to a bytearray (python 2.6) - to get all the green bytes for the pixels from such an array on a separate array, I could do: green =[1::4] Follow the tutorial in www.python.org docs, you could get proficient in the language in less than 1 hour - then check the pythons cripts that come with gimp for examples of the API use and pixel access. js -- ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] Gimp - prolog interface
Hi Ryan, I want to write some plug-ins in Prolog. [...] I want to be able to deal with the input and output in the form of a Prolog [...] Preferring to work in Prolog I need some help from a C programmer to write this plug-in. I'd appreciate any help from someone who has written a plug-in before. You want quite a lot and you will probably also need to do quite a lot of stuff you do not want. :-) But your idea seems interesting (at least to me, although I'm not very fond of functional languages such as Prolog - I'm more the imperative type). Some thoughts you should deal with in the first place: - Are the plug-ins you want to do in Prolog to be compiled or interpreted ? - Which would be the Prolog compiler / interpreter to use for that project ? If the plug-ins are to be compiled, you would only need to write an interface library that provides the binding to the gimp / gtk+ libraries. In this case, the plug-in template which you can find at the gimp developer's site will probably point you in the right direction (together with the documentation of the compiler, which should be able to interface to the C language, e.g. gprolog). If it is going to stay in script form (i.e. will be interpreted), the thing would more or less go into the direction of python-fu / perl-fu (which also should give you an idea of what you need to do with the Prolog interpreter you want to use for the project; just have a look at the sources for these two plug-ins). Torsten signature.asc Description: This is a digitally signed message part. ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
Re: [Gimp-developer] Gimp - prolog interface
Hi Ryan - I strongly suggest you learn python instead, and us it for your scripts, instead. It attends eveeryone of yoru requisites: - no dealing with pointers or memory allocation/deallocation - gimp data structures are provided as high level objects - the language syntax even allows for a funciotnal-like programing if you prefer that. (for example to interact through layers, you just do: image = gimp.list_images()[0] for layer in image.layers: #your code dealing with the layer object When you get to the pixels you have then as a byte sequence, you then convert to a bytearray (python 2.6) - to get all the green bytes for the pixels from such an array on a separate array, I could do: green =[1::4] Follow the tutorial in www.python.org docs, you could get proficient in the language in less than 1 hour - then check the pythons cripts that come with gimp for examples of the API use and pixel access. js -- ___ Gimp-developer mailing list Gimp-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer
