Hi, sorry for the large number of posts.. we figured out the problem...
Everything works fine.... ;)
Thanks!!
On Thu, Mar 11, 2010 at 2:35 PM, Pablo Carneiro Elias
<pablo.c...@gmail.com>wrote:
> Hi all,
>
> Dirk, thanks for your replies on this subject. But it is still not clear
> how to use this decorator. I'll explain my questions:
>
> We found some docs telling that both user node and screen corners are
> defined within tracker space, which makes sense for me ;). I've analysed
> ProjectionCameraDecorator source code, and, in fact, planes are stored in
> tracker space. (::updateData()). But ::getViewing() method uses the user
> node to place the camera (user->getToWorld()). So, the user node must be a
> child of camera beacon, otherwise camera transform will not be taken into
> account in order to calculate
> view matrix... ;-/ . That means that user position will change camera
> position... I can't understand that..
> Why should user alter camera view matrix?
>
> We have a dynamic camera, that moves around the world, so it does have a
> changing world position. If user node is equivalent to the tracker device
> pose (which means, of course, that user is in tracker space),
> and it must be child of camera's beacon, it means that tracker must to be
> in the same metric system of my world... In fact it means that user is
> placed in world position relative to camera world position. Why can't user
> be in tracker space only (if user does not uses camera position it will
> always implicit be related to the camera current position, i.e moves with
> the camera implicitly).
>
> Thanks in advance and sorry for any missing concept of my part! ;)
>
>
> Pablo
>
>
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