Re: [openvrml-develop] A few Questions

[Braden M. <br...@en...>]

On Fri, 2010-04-30 at 16:10 +0200, Christian Lang wrote: 
> > > > What do you have OPENVRML_NODE_PATH set to?
>  > > >
>  > > to [blabla]\openvrml-0.18.5\openvrml-0.18.5\src\node
>  >
>  > That's probably not correct.  It needs to be set to where the DLL
>  > modules are located (i.e., vrml97.dll, x3d-core.dll, etc.).
> 
> Yep, that was the problem. But for the sake of completeness:
> 
>  > Hm... Any chance you could use the debugger to check the value of the
>  > "urn" variable right before this happens?  (In the
>  > openvrml::local::component::add_scope_entry function.)
> 
> It seems to be:
> 
> 0x00e5d000 "urn:X-openvrml:node:Anchor"
> 
> and it points to:
> 
> 117 'u'
> 
> But with the correct setting of OPENVRML_NODE_PATH this does not occur 
> any more.
> By the way, this (the setting of OPENVRML_NODE_PATH) is a point missing 
> on the wiki page.

Yup, I thought that would be it.

And you're right... the correct setting for OPENVRML_{NODE,SCRIPT}_PATH
could be made clearer to Visual Studio users.  I'll put this on the Wiki
page, and possibly augment README as well.

> > It sounds like there's probably something wrong with the program you're
>  > using to unpack the tarball.  Make sure the program supports the tar pax
>  > format.
> 
> I used 7zip for that, but i will use the svn sources from now on.

Then also note

        http://svn.openvrml.org/svnroot/openvrml/tags

... where you'll find the tagged releases that correspond to release
tarballs.

The pax format has been around for a while and is well supported on
POSIXy systems.  It's a little surprising that a modern tool wouldn't
work with it.  (Note that I started using this format precisely to
support the path lengths in the openvrml tarball.)  You might want to
try something like WinZip; at the very least, I'm sure that GNU tar
(which you could get with Cygwin) would work.

But if you're comfortable using svn, that's just fine, too.

> Now it seems to work so far (my world loads), but with the svn sources i 
> get some errors in the output about some "incorrect handle"s.

This isn't ringing any bells for me.  Can you provide more details?

> By the way, is there already a implemented way to rotate the world 
> around another point than the centre?

No.  But a patch to implement this per the X3D
Viewpoint.centerOfRotation field would be welcome.

-- 
Braden McDaniel <br...@en...>