Hi Frank
Problem:
osgText::Text and osgText::Text3D use the same font file.
The first really load the file and obtain an osgText::Font object,
the second use the cache created during the first load of the
font file, and so obtain an osgText::Font object instead of
osgText::Font3D object. To obtain an osgText::Font3D object,
osgText::Text3D call osgDB::readObjectFile(...) with an option
to specify the plugin we want an osgText::Font3D instead of
osgText::Font.
Generalised Problem:
In osgDB::Registry, loaded file cache is referenced by the name
of this file, so if I load a file with some options, and the cache
already contain object for this filename, I obtain an object
potentially not loaded with my options.
Behaviours:
Cache management is delegate to osgDB::Registry, but cache
coherence (load a file with option then reuse it, deactivate the
cache when load a specific file or don't cached the loaded file)
is user's responsibility.
Text3D case:
Delegate the cache coherence of font file in osgText to the user
is not a good idea. So to fix this I think to 2 solution:
- never use the cache when load a font for a Text3D. Just because
to load a Font3D, we use option in osgDB::readObjectFile()
- move osgText::Font3D implementation in osgText::Font,
suffix ex-Font3D method with "3D" in osgText::Font
(so osgText::Font3D::getGlyph() become osgText::Font::getGlyph3D()
)
And so Text and Text3D use the same osgText::Font object which
contain
2D and 3D glyph.
Thought, Robert, Other ?
David Callu
2009/2/19 David Callu <[email protected]>
> Hi Frank,
>
> This is a bug.
> I take a look.
>
> more in next episode.
> Cheer
>
> David Callu
>
> 2009/2/18 <[email protected]>
>
>> Greetings,
>>
>> I am experiencing problems rendering osgText::Text and osgText::Text3D
>> in the same scene. I have boiled it down to a nice bite-size chunk of
>> code which I have attached. I am running version 2.8.
>>
>> Is this a bug?
>>
>> Frank
>>
>>
>> _______________________________________________
>> osg-users mailing list
>> [email protected]
>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>>
>>
>
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