Hi Wojciech,
Thanks for clarifying. I was looking into it yesterday but didn't find
the right spots.
Maybe this could be integrated into the current implementation. I'm
pretty sure it might be usefull for other users too.
> Hi,
>
> ShadowMap::cull invokes culls traversal for both main camera
> (ShadowReceiving) graph & shadow camera (ShadowCasting) graphs. So if you
> block whole cull on ShadowMap level - it won't draw the scene as well. The
> trick is to block only the portion that culls ShadowCasting graph.
>
> See the osgShadow::ShadowMap::cull method (src/ osgShadow / ShadowMap.cpp)
>
> Line 330: _shadowedScene->osg::Group::traverse(cv);
> Thats the line where Scene traversal is invoked
>
> &
>
> Line 469 : _camera->accept(cv);
> Thats the line which calls cull traversal on Shadow Map camera.
>
>
> Cheers,
> Wojtek Lewandowski
>
>
> ----- Original Message -----
> From: "Jean-Sébastien Guay" <[EMAIL PROTECTED]>
> To: "OpenSceneGraph Users" <osg-users@lists.openscenegraph.org>
> Sent: Monday, February 11, 2008 4:20 PM
> Subject: Re: [osg-users] osgShadow one shot shadow map
>
>
>
>> Hello Sebastian,
>>
>>
>>> I'm quite confused regarding the osgShadow implementation.
>>> My scene and my light-positions are static. My idea was to capture the
>>> shadow-map only once
>>> and apply it consecutively in all frames. I'm a bit lost where to start.
>>> Neither update nor cull seems to be the right place.
>>> Any hints?
>>>
>> As you have seen, it was not designed to do that. It's designed to
>> recalculate the shadow map each frame. I guess you could add a boolean
>> to it to say that it has been calculated, and then not redo it again...
>> Maybe just something like:
>>
>> class myShadowMap : public osgShadow::ShadowMap
>> {
>> public:
>> myShadowMap() : _done(false) {}
>>
>> virtual void update(osg::NodeVisitor& nv)
>> {
>> if (!_done)
>> osgShadow::ShadowMap::update(nv);
>> }
>>
>> virtual void cull(osgUtil::CullVisitor& cv)
>> {
>> if (!_done)
>> {
>> osgShadow::ShadowMap::cull(cv);
>> _done = true;
>> }
>> }
>>
>> private:
>> bool _done;
>> };
>>
>> Note that I didn't try this, but it might give you something to start
>> with? Let us know how it goes.
>>
>> Hope this helps,
>>
>> J-S
>> --
>> ______________________________________________________
>> Jean-Sebastien Guay [EMAIL PROTECTED]
>> http://www.cm-labs.com/
>> http://whitestar02.webhop.org/
>> _______________________________________________
>> osg-users mailing list
>> osg-users@lists.openscenegraph.org
>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>>
>>
>
>
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