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I'd like to call Library-Functions from SDL. Is there already an extension
to POV-Ray that enables declaration of external user-defined functions?
I think of something like the JNI, only more simple. At least support for
double-type parameters and -arrays (for return-parameters) would be useful.
Regards, Arne
ps.: no, i dont want to generate pov-scene files and i dont want to create
data files and read them with sdl
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From: Thorsten Froehlich
Subject: Re: Calling external Math functions from .dll or .so
Date: 10 Feb 2005 10:39:45
Message: <420b8041@news.povray.org>
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verjigorm wrote:
> I'd like to call Library-Functions from SDL. Is there already an extension
> to POV-Ray that enables declaration of external user-defined functions?
The source code of POV-Ray is available, so just compile it.
Thorsten
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Yes, I already downloaded the code. Just wanted to check if any extension
already exists and if a feature like library support is going to be added
some day.
Sounds like a good idea to me, you know like in MATLAB for instance.
Thanks,
Arne
Thorsten Froehlich <tho### [at] trf de> wrote:
> verjigorm wrote:
> > I'd like to call Library-Functions from SDL. Is there already an extension
> > to POV-Ray that enables declaration of external user-defined functions?
>
> The source code of POV-Ray is available, so just compile it.
>
> Thorsten
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From: Thorsten Froehlich
Subject: Re: Calling external Math functions from .dll or .so
Date: 10 Feb 2005 12:37:01
Message: <420b9bbd$1@news.povray.org>
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verjigorm wrote:
> Yes, I already downloaded the code. Just wanted to check if any extension
> already exists and if a feature like library support is going to be added
> some day.
> Sounds like a good idea to me, you know like in MATLAB for instance.
No, it is an extremely bad idea as it is not portable and all this has been
explained several times in these groups. It is never going to be added to
any official version of POV-Ray.
Thorsten
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From: Mike Raiford
Subject: Re: Calling external Math functions from .dll or .so
Date: 10 Feb 2005 13:29:13
Message: <420ba7f9$1@news.povray.org>
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Thorsten Froehlich wrote:
> No, it is an extremely bad idea as it is not portable and all this has
> been explained several times in these groups. It is never going to be
> added to any official version of POV-Ray.
Not only that, but all it would take is one badly written plugin to
corrupt POV-Ray's memory and crash POVRay with the blame on the POV-Team.
Though, I suppose you could use CORBA, COM, SOAP or any other IPC
technology... <g,duck>
--
~Mike
Things! Billions of them!
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in news:420b9bbd$1@news.povray.org Thorsten Froehlich wrote:
> No, it is an extremely bad idea as it is not portable and all this
> has been explained several times in these groups. It is never going
> to be added to any official version of POV-Ray.
>
I've seen this awnser so often to similar questions, but I'm wondering,
why does it work for other programming/scripting languages. I what way is
POV-Ray different. I can imagine that it would be complex to add a new
ray-traceable object through a module, but how about other stuff like, for
example a database interface.
http://python.active-venture.com/ext/intro.html
http://www.rubycentral.com/book/ext_ruby.html
Ingo
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in news:Xns95F9D1BD7FE35seed7@news.povray.org ingo wrote:
> but how about other stuff like, for
> example a database interface.
>
probably not the best example, her's another one: write the core of a slow
mesh-creation macro in C and use it as if it is an include file or a part
of an includefile package.
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From: Tom Melly
Subject: Re: Calling external Math functions from .dll or .so
Date: 10 Feb 2005 18:05:13
Message: <420be8a9$1@news.povray.org>
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"Thorsten Froehlich" <tho### [at] trfde> wrote in message
news:420b9bbd$1@news.povray.org...
> verjigorm wrote:
> > Sounds like a good idea to me, you know like in MATLAB for instance.
Yes, it does sound like a good idea - however, for reasons Thorsten so
vigorously defended but didn't bother to explain, it probably won't happen.
> No, it is an extremely bad idea as it is not portable and all this has
been
> explained several times in these groups. It is never going to be added to
> any official version of POV-Ray.
I've often wondered. Bearing in mind my ignorance of high-end programming,
wouldn't it be possible to run a binary with a command line switch to tell
it to take advantage of specified system-specific libaries?
Bugs would be the responsibility of the library author, unless the bug was
repeatable w/o the library being loaded.
Or would such libraries be horribly inefficient?
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From: Matthias Weißer
Subject: Re: Calling external Math functions from .dll or .so
Date: 11 Feb 2005 11:41:31
Message: <420ce03b$1@news.povray.org>
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Thorsten Froehlich schrieb:
> verjigorm wrote:
>> Yes, I already downloaded the code. Just wanted to check if any extension
>> already exists and if a feature like library support is going to be added
>> some day.
> > Sounds like a good idea to me, you know like in MATLAB for instance.
>
> No, it is an extremely bad idea as it is not portable and all this has been
> explained several times in these groups. It is never going to be added to
> any official version of POV-Ray.
I would like to ask why this would be not portable? Any platform POVRay
runs on should support dynamic loading. Or does POVRay compiles under
plain DOS?
For my self I don't have any application to use such an interface off
POVRay because my .pov's are written from another programm or by hand.
It's only a technical question.
--
mat### [at] matweide
http://www.matwei.de
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From: Mike Raiford
Subject: Re: Calling external Math functions from .dll or .so
Date: 11 Feb 2005 11:51:05
Message: <420ce279@news.povray.org>
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> Thorsten Froehlich schrieb:
>
>> verjigorm wrote:
>>
>>> Yes, I already downloaded the code. Just wanted to check if any
>>> extension
>>> already exists and if a feature like library support is going to be
>>> added
>>> some day.
>>
>> > Sounds like a good idea to me, you know like in MATLAB for instance.
>>
>> No, it is an extremely bad idea as it is not portable and all this has
>> been explained several times in these groups. It is never going to be
>> added to any official version of POV-Ray.
>
>
> I would like to ask why this would be not portable? Any platform POVRay
> runs on should support dynamic loading. Or does POVRay compiles under
> plain DOS?
>
> For my self I don't have any application to use such an interface off
> POVRay because my .pov's are written from another programm or by hand.
> It's only a technical question.
Dynamic loading and linking is not standardised across platforms. Each
OS has it's own way of loading an external module and "fixing up" the
procedure addresses.
--
~Mike
Things! Billions of them!
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