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In article <3c7e5652@news.povray.org>, "Gleb" <gk1### [at] soton acuk> wrote:
> Same question: :is graphic portability more complex thing? Sorry, if
> the question looks stupid and/or has well-known answer. I just want
> to get the real reason.
Graphics are completely platform dependant...the only standard interface
is for unstyled text. There is no standard way of drawing a pixel on the
screen, these facilities are provided by the operating system.
There *are* standard interfaces for writing binary files, but there is
no guarantee that a binary file will be readable on platforms other than
the one it was created on. The only way to guarantee that is to write
things byte by byte, so the exact order and format of the data is known.
The POV language isn't really capable of handling this right now...it'd
probably require reworking the file I/O syntax, and because of the
simplifications required by the POV language, it probably wouldn't be
useful for interacting with other programs.
--
Christopher James Huff <chr### [at] maccom>
POV-Ray TAG e-mail: chr### [at] tagpovrayorg
TAG web site: http://tag.povray.org/
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"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3C7E6052.BB0F78AB@gmx.de...
>
>
> Gleb wrote:
> >
> > > There is no graphics output in Povray, only some versions call API
> > > functions of the OS to display the render in the platform specific
code.
> > > This has nothing to do with the rendering program itself.
> > >
> > This is exactly what I mean: there is no graphics in Povray, but there
is
> > somehow binary images output
> > and and input, isn't it?
>
> Yes, but this is platform independant due to precautions in the image file
> format definitions. Simply writing your floats and vectors to a file as
> binary with some IO functions would be different.
>
OK, thank you, the reason is much clear now. Format of floats is really
platform dependent,
but byte strings i/o would be enough in this case, and it is almost there
already.
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"Christoph Hormann" <chr### [at] gmxde> wrote in message
news:3C7E6052.BB0F78AB@gmx.de...
<snip>
Am I right that this issue is about limiting the portability of scripts, rather
than the pov-application?
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"Tom Melly" <tom### [at] tomandlucouk> wrote in message
news:3c7e640c@news.povray.org...
> Am I right that this issue is about limiting the portability of scripts,
rather
> than the pov-application?
or, more accurately, the portability of the binary output of scripts...
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