Re: [OpenBabel-scripting] Ruby bindings for OBDepict

[Noel O'B. <bao...@gm...>]

After googling, I see that RMagick may be a better way to convert from
SVG to PNG from Ruby.

- Noel

On 14 May 2011 18:32, Noel O'Boyle <bao...@gm...> wrote:
> Rather than use OBPainter or OBDepict, why not convert to SVG as
> normal, and then use a cairo interface to draw as a PNG. This is what
> I am doing for the python interface, eg.
>
> import cairo
> import rsvg
>
> h = rsvg.Handle("test.svg")
> s = cairo.ImageSurface(cairo.FORMAT_ARGB32, 100, 100)
> ctx = cairo.Context(s)
> h.render_cairo(ctx)
> s.write_to_png("test.png")
>
> These are GTK libraries. Maybe you can find similar libraries in Ruby?
>
> - Noel
>
> On 11 May 2011 11:50, Christoph Helma <he...@in...> wrote:
>> I wanted to substitute CDK/JChemPaint with OBDepict in our ruby based
>> webservices, but it seems that OBDepict (and also OBPaint) do not have
>> ruby bindings (other classes like OBMol or OBConversion work fine):
>>
>> depict = OpenBabel::OBDepict.new
>> NameError: uninitialized constant OpenBabel::OBDepict
>>        from (irb):1
>>
>> It seems that OBDepict is missing from scripts/ruby/openbabel-ruby.cpp
>> which changes would I need to make to create ruby bindings for OBDepict
>> (my SWIG knowledge is rather weak)?
>>
>> Best regards,
>> Christoph
>>
>> PS: I also had to change Init_OpenBabel to Init_openbabel at line 49795
>> of openbabel-ruby.cpp. This problem has been fixed in OpenBabel 2.2.3,
>> but it reappeared in 2.3.0
>>
>> ------------------------------------------------------------------------------
>> Achieve unprecedented app performance and reliability
>> What every C/C++ and Fortran developer should know.
>> Learn how Intel has extended the reach of its next-generation tools
>> to help boost performance applications - inlcuding clusters.
>> http://p.sf.net/sfu/intel-dev2devmay
>> _______________________________________________
>> OpenBabel-scripting mailing list
>> Ope...@li...
>> https://lists.sourceforge.net/lists/listinfo/openbabel-scripting
>>
>