Hi Jean-Sebastien, what i do at the moment is, i walk trought the drawables and collect all triangles, so i don't care about material, ... nor transformations. what i should do is to transform the triangles before insertion. but i don't like this way. another possibility is: for each geometry (hard) we can attache a kd-tree object, and then the intersection visitor transforms the objects when a transformation node is used, this is the way it works with the current intersection visitor (if i am not wrong), so i like just to replace a small part of code in OSG core, to check a ray (line) against the kd-tree and not against the list of triangles in the geometry. so we can speed up the intersection testing. but what we need is to implement this into osg core.
/adegli 2007/10/29, Jean-Sébastien Guay <[EMAIL PROTECTED]>: > > Hello Adrian, > > > The code as it stands does not currently support transforms. Can you > >> help with that? I have never personally implemented a kd-tree > >> algorithm, so I do not know where this support of transforms needs to > >> be put in. > > > > correct, but when we have integrated it into the core of osg, then it > should > > work as expected. > > I still don't understand why the code would > a) not support transformations if it isn't integrated into core OSG > b) support them once it is. > > It's the same code, it won't "magically" support transforms, you need > to write the code for that... Please explain, because there's > something I'm missing here. > > J-S > -- > ______________________________________________________ > Jean-Sebastien Guay [EMAIL PROTECTED] > http://whitestar02.webhop.org/ > > ---------------------------------------------------------------- > This message was sent using IMP, the Internet Messaging Program. > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > -- ******************************************** Adrian Egli
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