[Sidefx-houdini-list] HDK: op:/ magic

Mark Elendt mark at sidefx.com
Wed Jan 19 08:48:26 EST 2011


For mantra, even Houdini's VEX doesn't support the op: syntax :)

For VEX functions in OPs, you should be able to access the SOP by
grabbing the OP director and finding the SOP.

On Wednesday Jan 19 at 13:39, Szymon Kapeniak wrote:
> thanks Mark,
> but how about custom vex dso? My func() opens file from disk, but
> doesn't handle op: syntax. Is it doable in custom code?
> 
> thanks,
> skk.
> 
> 2011/1/19 Mark Elendt <mark at sidefx.com>:
> > Unfortunately, at the current time op: is handled as a special case,
> > so it's not part of the generalized loader.
> >
> > You'll have to reference the geometry directly (i.e. cook the SOP).
> > If you need your own copy, you'll have to merge it.
> >
> > On the other hand, opdef: is handled properly.
> >
> > On Wednesday Jan 19 at 12:11, Olex P wrote:
> >> Maybe you right Szymon. Most of the usage of op: syntax for me was sampling
> >> from point clouds/volumes/textures and I have never tries to load geometry
> >> using op: syntax. File SOP doesn't work with it and I think it's because of
> >> the fact that load() expects a proper file format. Would be great to hear
> >> about this from SESI.
> >>
> >> On Wed, Jan 19, 2011 at 11:58 AM, Szymon Kapeniak <szymon.kapeniak at gmail.com
> >> > wrote:
> >>
> >> > hi Olex,
> >> > thanks for fast response. Well, I must be doing something stupid,
> >> > because it doesn't.
> >> >
> >> > GU_Detail gdp;
> >> > const char *file   = (const char *) argv[1];
> >> > if (gdp.load(file, 0) < 0) return ;
> >> > ...
> >> >
> >> > while works fine with disk paths, doesn't work with op:/'ed one.
> >> >
> >> >
> >> > 2011/1/19 Olex P <hoknamahn at gmail.com>:
> >> > > Hi Szymon,
> >> > >
> >> > > I don't think that you need any magic. op: syntax has to be handled
> >> > > automagically when you using
> >> > >
> >> > > [code]virtual int          load(const char *, const UT_Options
> >> > > *options);[/code]
> >> > >
> >> > > method.
> >> > >
> >> > > On Wed, Jan 19, 2011 at 11:41 AM, Szymon Kapeniak <
> >> > szymon.kapeniak at gmail.com
> >> > >> wrote:
> >> > >
> >> > >> greetings!
> >> > >>
> >> > >> what is a magic to let  my GU_Detail class to ::load() both files from
> >> > >> disk as operator's streams with op:/path syntax? I can see load()
> >> > >> with an UT_IStream as argument, but I have no idea how to use it. Does
> >> > >> any of UT_Stream versions handle both files and steams or the logic is
> >> > >> on my side?
> >> > >>
> >> > >> thanks,
> >> > >> skk.
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> > --
> > Mark Elendt
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-- 
Mark Elendt



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