Just thought I should follow up on all this. I'm going to have to call it quits on the Metaflight loader. Currently there doesn't appear to be proper infrastructure in OSG to build just a loader; I will also need to build runtime terrain paging logic. I've tried to do this by subclassing existing OSG classes but I can't make it work.... -- Terry Welsh - mogumbo 'at' gmail.com www.reallyslick.com | www.mogumbo.com
On 12/19/06, Terry Welsh <[EMAIL PROTECTED]> wrote:
Doh. Looks like I solved this one already by setting the switch-in distances on my filenames to infinity. Guess I should have thought of that before. Thanks anyway.... - Terry > Message: 26 > Date: Tue, 19 Dec 2006 11:15:47 -0800 > From: "Terry Welsh" <[EMAIL PROTECTED]> > Subject: Re: [osg-users] Metaflight loader > To: [email protected] > Message-ID: > <[EMAIL PROTECTED]> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Thanks Murray. I'll be sure you get you a copy when the loader is > ready for stress-testing. > > Now I have a little logic question for anyone who has done terrain > paging. I want terrain tiles at level 1 to be replaced by multiple > tiles level 2 simultaneously. But if each tile has its own LOD center > then level 2 tiles pop in at different times as you approach them, and > this causes holes to appear in the terrain. > > I can fix this problem between levels 1 and 2 by setting the same > center on all these tiles. However, this center is inappropriate for > the level 3 children of a level 2 tile. What I really need is for > each tile to have have a separate switch-in center and switch-out > center. > > My scene graph is set up in units that look like this. A PagedLOD has > multiple child PagedLODs and one filename representing the tile at > that level. Each of those child PagedLODs contains multiple PagedLODs > and a filename just like this one. > > PagedLOD --- PagedLOD > PagedLOD > PagedLOD > PagedLOD > FileName > > Does this explanation of my problem make sense? Is there a better way > to set up the graph to solve this problem? > - Terry > > > Hi Terry, > > > > I'd be interested in supporting your effort to create a (partial) MetaFlight > > loader in any way that I can. My lab uses both OSG and Vega Prime (w/ > > LADBM) on a regular basis and would welcome the addition of this capability > > to OSG. I can't promise months of programming support, but we have several > > bright programming sparks in the lab and would be happy to support testing, > > etc., if it would be of help. > > > > Cheers, > > > > Murray
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