Hi Neil, The osgEarth project does essentially what you are looking for. Check it out at http://www.osgearth.org
Thanks, Jason On Fri, Jun 12, 2009 at 5:08 AM, <[email protected]> wrote: > Hi All, > > Has anyone come across a scenario where they wished to have PagedLOD that > instead of handling Nodes, handle images ? > > Essentially I find myself in a position where I have a model that > references a texture, but that texture is quite large, and even with > reducing the texture size with little compromise in quality, the time to > stream over the web is too large. So, what I'm considering is replacing the > image load call, with a similar concept to that of PagedLOD's whereby I > could give the "PagedImageLOD" object a list of ordered image file names > that I want it to progressively load - in much the same way that apps like > google map appears to work. The first image file could be a 2x2 pixel image, > whilst the nth image file would be the full-on image. I would want the > "PagedImageLOD" to return a valid Image node immediately - perhaps a hard > coded small default image - whilst in the background the specified image > filesnames are being downloaded, and replace the content of the created > image node. > > The reason for this sort of functionality would be that I could then > intercept all image load requests via my own callback handler, replace with > a PagedImageLOD request, and still permit most plugins to work happily on > the assumption that a model plugin that loads an image is probably only > trying to reference that image in some stateset context. > > Sorry for the thought dump, but has anyone tried/needed to do a similar > thing, and if so is there an example available ? > > Alternatively, if you can think of a better way that would be good as well. > Most obvious alternative - that of have an LOD node on the model - would be > fine if I only had one or two models. However, I have thousands of different > models, so can't really ask our modellers to redo all these. > > Many thanks for any help/thoughts. > > Kind regards > > Neil. > > > > > .to whose content was progressively replaced by the downloaded images. In > this way I could > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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