Sebastian, it was too early to be happy. Changing it to traverse first then
update didn't helped actually. On the windshield model I have attached
ParticleSystem that is actually delayed with the windshield. Any other
ideas?
I also tried to attach this directly to parts of the model but same results.
It is about rain effect. This particle system is firing rain drops on the
windshield geometry and it suppose to move with the car model, however it
is delayed as it moves.
Thanks
Nick
On Thu, Dec 19, 2013 at 12:02 PM, Sebastian Messerschmidt <
sebastian.messerschm...@gmx.de> wrote:
> You're welcome
>
> Thanks Sebastian. That was it. It did helped!
>
> Nick
>
>
> On Thu, Dec 19, 2013 at 11:53 AM, Trajce Nikolov NICK <
> trajce.nikolov.n...@gmail.com> wrote:
>
>> Hi Sebastian,
>>
>> that is actually a good idea to do the traversal first. Let me try it
>> first. Thanks !
>>
>> Nick
>>
>>
>> On Thu, Dec 19, 2013 at 11:51 AM, Sebastian Messerschmidt <
>> sebastian.messerschm...@gmx.de> wrote:
>>
>>> Am 19.12.2013 09:26, schrieb Trajce Nikolov NICK:
>>>
>>> Hi Nick,
>>>
>>> My first question would be: Why don't you simply attach the windshield
>>> to the model ;-)
>>> No seriously, I had those effects too, when retrieving e.g. the
>>> ModelView matrix in callbacks. The problem usually was gone whe doing the
>>> traverse first and the get the matrices.
>>> Maybe you can give it a try, or paste some of your update-callback code
>>> here, so we can help.
>>>
>>> So basically this:
>>> void CameraUpdateCallback::operator()( osg::Node* node,
>>> osg::NodeVisitor* nv )
>>> {
>>> osgUtil::CullVisitor* cv = dynamic_cast<osgUtil::CullVisitor*>(nv);
>>> if (!cv)
>>> {
>>> return;
>>> }
>>> traverse(node,nv);
>>>
>>> osg::Camera& camera = *cv->getRenderInfo().getView()->getCamera();
>>> camera.getViewMatrix() ....
>>> }
>>>
>>> will yield different results than this:
>>>
>>> void CameraUpdateCallback::operator()( osg::Node* node,
>>> osg::NodeVisitor* nv )
>>> {
>>> osgUtil::CullVisitor* cv = dynamic_cast<osgUtil::CullVisitor*>(nv);
>>> if (!cv)
>>> {
>>> return;
>>> }
>>>
>>>
>>> osg::Camera& camera = *cv->getRenderInfo().getView()->getCamera();
>>> camera.getViewMatrix() ....
>>>
>>> traverse(node,nv);
>>> }
>>>
>>> This at least solved problems in multipass-rendering, where multiple
>>> cameras had to be synced relative to each other.
>>>
>>> Hope this helps.
>>>
>>> cheers
>>> Sebastian
>>>
>>> Hi Community,
>>>
>>> I have a simple scene of a car model with a windshield (two separate
>>> models combined in runtime). There is osg::MatrixTransform node on top of
>>> the car that moves it around, and the windshield is attached to the scene
>>> that also has osg::MatrixTransform on top of it with an UpdateCallback that
>>> copies the car's matrix.
>>>
>>> ( the real scene is a bit different but this is the concept)
>>>
>>> I am seeing the windshild has some delay in following the car model
>>> while moving and at lower framerates. I think I just tried everything but
>>> always this is the same case
>>>
>>> Any clue and hints?
>>>
>>> Thanks a bunch!
>>>
>>> Nick
>>>
>>> --
>>> trajce nikolov nick
>>>
>>>
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>>
>>
>> --
>> trajce nikolov nick
>>
>
>
>
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> trajce nikolov nick
>
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