What's the best way of producing bitmaps/pixelmaps through Erlang.

[G.S.-2]

Hello,

What's the best way to produce/specify bitmaps/pixemaps using Erlang? Is anyone using particular modules, or projects for this?

Thanks,
-Gene

_______________________________________________
erlang-questions mailing list
[hidden email]
http://erlang.org/mailman/listinfo/erlang-questions

[Zvi]

The only one open-source I know is erl_img from jungerl:
https://github.com/gebi/jungerl/tree/master/lib/erl_img

Also look on github for erl_img for varoius forks.

See the docs here:
http://doc.erlagner.org/index.html?i=0&search=erl_img#erl_img

At the end we wrote our own image file format in erlang.

On May 5, 2:27 am, "G.S." <[hidden email]> wrote:

> Hello,
>
> What's the best way to produce/specify bitmaps/pixemaps using Erlang? Is
> anyone using particular modules, or projects for this?
>
> Thanks,
> -Gene
>
> _______________________________________________
> erlang-questions mailing list
> [hidden email]://erlang.org/mailman/listinfo/erlang-questions

_______________________________________________
erlang-questions mailing list
[hidden email]
http://erlang.org/mailman/listinfo/erlang-questions

[Vance Shipley]

Have you looked at egd?

        http://www.erlang.org/doc/man/egd.html

On May 5, 2:27 am, "G.S." <[hidden email]> wrote:
}  What's the best way to produce/specify bitmaps/pixemaps using Erlang? Is
}  anyone using particular modules, or projects for this?

--
        -Vance
_______________________________________________
erlang-questions mailing list
[hidden email]
http://erlang.org/mailman/listinfo/erlang-questions

[G.S.-2]

Thanks, I will check both.

By the way, the purpose of use is creating Fractal Art.

Regards,
-Gene

On Sat, May 7, 2011 at 10:56 AM, Vance Shipley <[hidden email]> wrote:

Have you looked at egd?

       http://www.erlang.org/doc/man/egd.html

On May 5, 2:27 am, "G.S." <[hidden email]> wrote:

}  What's the best way to produce/specify bitmaps/pixemaps using Erlang? Is
}  anyone using particular modules, or projects for this?

--
       -Vance

_______________________________________________
erlang-questions mailing list
[hidden email]
http://erlang.org/mailman/listinfo/erlang-questions

_______________________________________________
erlang-questions mailing list
[hidden email]
http://erlang.org/mailman/listinfo/erlang-questions

[Vance Shipley]

On Sat, May 07, 2011 at 12:39:33PM -0700, G.S. wrote:
}  By the way, the purpose of use is creating Fractal Art.

In that case you may want to look at this:

   lib/erlang/lib/gs-1.5.13/contribs/mandel

--
        -Vance
_______________________________________________
erlang-questions mailing list
[hidden email]
http://erlang.org/mailman/listinfo/erlang-questions

[Steve Davis]

Hi,

My personal take on this is that you should process the fractal
algorithm in a way that's separated from any particular file format,
building the image in a very generic way; e.g. perhaps using a record
like -record(image, {id, width, height, pixel_depth, rgba = []}).
where rgba are the generated 4-tuples {R, G, B, A} representing the
data points.

Then you could write transcoders (codecs) from this format to any
number of binary image file formats. The binary syntax of Erlang will
then prove its worth in spades.

It's somewhat curious to me that a comprehensive library for image
codecs hasn't emerged already, given the ease of which this can be
done in Erlang's binary/bit syntax.

HTH,
Steve

On May 7, 2:39 pm, "G.S." <[hidden email]> wrote:

> Thanks, I will check both.
>
> By the way, the purpose of use is creating Fractal Art.
>
> Regards,
> -Gene
>
>
>
>
>
>
>
> On Sat, May 7, 2011 at 10:56 AM, Vance Shipley <[hidden email]> wrote:
> > Have you looked at egd?
>
> >        http://www.erlang.org/doc/man/egd.html
>
> > On May 5, 2:27 am, "G.S." <[hidden email]> wrote:
> > }  What's the best way to produce/specify bitmaps/pixemaps using Erlang? Is
> > }  anyone using particular modules, or projects for this?
>
> > --
> >         -Vance
> > _______________________________________________
> > erlang-questions mailing list
> > [hidden email]
> >http://erlang.org/mailman/listinfo/erlang-questions
>
>
>
> _______________________________________________
> erlang-questions mailing list
> [hidden email]://erlang.org/mailman/listinfo/erlang-questions

_______________________________________________
erlang-questions mailing list
[hidden email]
http://erlang.org/mailman/listinfo/erlang-questions

[Steve Davis]

More concretely as an example, a TGA format binary could be created as
simply as this:

encode(#image{id = undefined}) ->
        encode(#image{id = <<>>});
encode(#image{id = ID, width = W, height = H, pixel_depth = BPP, rgba
= L}) ->
        Header = <<(byte_size(ID)), 0, 2, 0:40, 0:16, 0:16, W:16/little, H:16/
little, BPP, 0:2, 2:2, 0:4, ID/binary>>,
        Data = encode(L, <<>>),
        Trailer = <<0:64, "TRUEVISION-XFILE.", 0>>,
        <<Header/binary, Data/binary, Trailer/binary>>.

encode([{R, G, B, A}|T], Bin) ->
        encode(T, <<Bin/binary, B, G, R, A>>);
encode([], Bin) ->
        Bin.
_______________________________________________
erlang-questions mailing list
[hidden email]
http://erlang.org/mailman/listinfo/erlang-questions

[Richard Carlsson-3]

On 05/07/2011 09:39 PM, G.S. wrote:
> Thanks, I will check both.
>
> By the way, the purpose of use is creating Fractal Art.
>
> Regards,
> -Gene

If you just want to get started as quickly as possible, you could write
to PPM format ASCII text files
(http://en.wikipedia.org/wiki/Netpbm_format) and then use pnmtotiff,
pnmtojpeg, etc. (see http://netpbm.sourceforge.net/) to convert them to
the format you prefer. The ASCII representation makes it easy to look at
the output while you're debugging, so that right now you can focus on
generating graphics rather than getting the output format right. Some
tools, such as GIMP, can read/write PPM files directly, if you want to
quickly view the result.

     /Richard
_______________________________________________
erlang-questions mailing list
[hidden email]
http://erlang.org/mailman/listinfo/erlang-questions