Hi, I still have a question about PagedLod.
I set a pagedLod with 2 children on a 600k face models. Using the StatsHandler on osgViewer with this model, I saw that the number of face decrease when I mode the camera far from it. The problem is that there is no "step" but a regular decrease... so I'm not sure of the moment when the LOD switch if child... Why can't I see this change ? A second question, I set pLod->setNumChildrenThatCannotBeExpired(1); The goal is to save memory as much as possible ... but I didn't see a real change in the used memory... Do this call is sufficient to ensure the memory saving ? Are there some delays or other things to know about the PagedLod way of managing memory ? Thanks. Regards, Vincent. 2009/9/7 Chris 'Xenon' Hanson <xe...@alphapixel.com> > Björn Blissing wrote: > > I remember I wondered the same thing my self. The method I (and I guess > Vincent) wonders about is the: > > addChild (Node *child, float min, float max, const std::string &filename, > float priorityOffset=0.0f, float priorityScale=1.0f) > > Here you have to supply both a Node* and a filename. I didn't quite get > why, so I skipped this and used the setFilename approach instead. > > I think this is used when creating a PagedLOD scenegraph that you will > then write to disk > for later realtime use, the way VirtualPlanetBuilder/OSGDEM does. > > > Related question: > > What do the values "priorityOffset" and "priorityScale" control? The > documentation is quite sparse when it comes to this... > > From memory, these are used to tweak the criteria used to determine when > each node is > loaded form disk, but I can't recall the details. > > > Best regards > > Björn > > -- > Chris 'Xenon' Hanson, omo sanza lettere Xenon > AlphaPixel.com > PixelSense Landsat processing now available! > http://www.alphapixel.com/demos/ > "There is no Truth. There is only Perception. To Perceive is to Exist." - > Xen > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >
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