Kim, This is to some extent what already happens with the mipmapping LOD that osgOcean currently uses.
The problem is that the multi-res surface is dependant on the position of the camera and not on local features. The code to recompute the surface primitives is already pretty complicated, to do it based on both camera position and local features would be a nightmare (if at all possible). One way to address this would be to increase the resolution of the highest level of detail and only apply the iwave algorithm to tiles in close proximity to the camera. K. 2010/1/5 Trajce Nikolov <nikolov.tra...@gmail.com> > ok. I will have a look > > It is however a pretty expensive effect and the resolution of the ocean > has to be increased > > How about having multi-res ocean, what I mean to have it tiled with > different res on each tile > > Nick > > http://www.linkedin.com/in/tnick > Sent from Devlet, Ankara, Turkey > > On Tue, Jan 5, 2010 at 12:10 PM, Kim Bale <kcb...@googlemail.com> wrote: > >> Hi Nick, >> >> It isn't support in osgOcean at the moment. However, Tessendorf discusses >> a technique called iwave which can be used to create localised wave >> deformation in conjunction with the FFT ocean technique. You can read about >> it here: >> >> http://graphics.ucsd.edu/courses/rendering/2005/jdewall/tessendorf.pdf >> >> I had a student implement it in an ogl app a while back and the effect was >> quite good. It is however a pretty expensive effect and the resolution of >> the ocean has to be increased rather a lot otherwise its very chunky. >> >> <http://graphics.ucsd.edu/courses/rendering/2005/jdewall/tessendorf.pdf> >> K. >> >> >> 2010/1/5 Trajce Nikolov <nikolov.tra...@gmail.com> >> >>> Hi gurus, >>> >>> Is it possible to have a wave generator at specific position in the >>> ocean? Like the rear or front of the boat, rain drops .. etc ..? >>> Nick >>> >>> http://www.linkedin.com/in/tnick >>> Sent from Izmit, 41, Turkey >>> >>> _______________________________________________ >>> osg-users mailing list >>> osg-users@lists.openscenegraph.org >>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>> >>> >> >> _______________________________________________ >> osg-users mailing list >> osg-users@lists.openscenegraph.org >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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