Rhumba-flappy LOD 8 issue

M

merlin2

Charter Member
Hi everyone; I was just flying around Isle of Wight, came upon this: Its the first time I have had an issue with the LOD8, which I have been very happily using since it first came out; any ideas anyone? I don't think I have any other scenery loaded that would interfere. Maybe someone else would go for a flight and have a look. This is the western tip of the Isle of Wight.

thanks
merlin2
 
I'll have to check it out, but you're going to find this occasionally. I found this to be the case for the Murmansk area of Russia. It made placing ports a bit tricky, but I was able to fix it.
 
Looks like a Tsunami.Are you sure that s not the coast of Indonesia.

Sorry in advance,I couldn,t resist:pop4:
 
Hi merlin2.

Post a latitude and longitude, and I may be able to provide a fix. Actually, this looks like what happens when you use any SRTM-bassed mesh with the default land-water masking.

Dick
 
Hi merlin2.

First, I'm surprised no one else ( myself included ) has seen this. I was right that the default LandWaterMask is showing. But, it should not. Your replacement masks are activated. It works the same on my system. The new mask for CST4l00d_m.bgl should overwrite the original, but it doesn't.

CST4l00b_m.bgl is also not showing.

The problem is not the mesh.

But here's the odd part... the BGLs are written correctly. You have found a CFS2 terrain bug we've never seen before.

I suspect the bug is in the reading of the header of the file. The header tells the sim quickly where it is located, so the sim loads it on demand. It doesn't affect the display... a wrong header location doesn't prevent the sim from displaying it correctly.

We are supposed to make the file header a bit larger than the area it covers N,S,E,W, and the masks I made do this, just as the originals do this. The masks I made are quarters of the original LOD3 areas. The NW and SW quarters prevent the display of the NE and SE quarters when they are all lumped together in a single scenery folder. As a result, some of the new masks show, and some don't.

It doesn't do any good the deactivate the original masks... the new masks will still not all show.

And this might take a while to find a reliable work-around.

If CST4l00a_m.bgl and CST4l00b_m.bgl are in their own scenery folder, with no other masks, they work just fine. So I can put the masks in separate folders and they should all work ( haven't tried it yet ). But that's a lot of folders. What's happening is the sim isn't loading those masks if the others in the set are present. Very odd.

I have tried a small test, made the headers all for 0.0*... N,S,E,W And then the masks seem to show correctly... But why? They shouldn't even load if the headers are used at all, because we are nowhere near N0.0,E0.0

And the defaults do use headers.

I'l try a test with really mixed up headers, and see what happens.

Dick
 
It appears that a header bounds set to the entire LOD3 for each quarter section ( a,b,c,or d ) will also display correctly, if all 4 quarters are set that way.

So there may be an assumation that the quarters should cover the same LOD3 area....

I've looked for other areas, but I can't see them. Also, all the watermasks in the set look OK in both LWMViewer and in TMFViewer... which are the toools we'd usually use to check files.

The only good news is that the BGL header does affect this problem, so the final solution should rest there.

Dick
 
Thanks Rhumbaflappy.

let us know if you can come up with a solution!

BTW I love your LOD 8; any chance of doin North America? (I am sure it is a lot of work)

best wishes
 
The quick fix is to take CST4l00b_m.bgl and CST4l00d_m.bgl and move them into a new scenery folder and add that via the Scenery Library... then they should show OK.

This is a bug in the sim, not in the BGLs. Eventually, I'm going to write a program to alter the headers and that will help solve the problem.

But meanwhile, I cannot even get the DEM8_18.zip fixed in the SOH Library... Douglas and I just can't seem to get on the same page with it. The crash of a few weeks ago corrupted that zip file, and I've sent 2 good copies to the Library, and contacted Douglas, and I still can't get a good zip file inserted for the download.

So until the Library at SOH is OK, I don't want to send in any corrections to files that should have been OK in the first place... meaning the bug in the sim forcing yet another work-around in scenery.

The problem files are the land-water mask files, not the mesh files, if anyone is confused. They are England and Scotland. I've never run into this problem before ( nor has anyone else ). I think it might be CFS2 specific.

Good detailed mesh that should work in CFS2 can be bought at FSGenesis, by Justin Tyme. If the mesh works in FS2002, it will work in CFS2. Justin's work is very reliable.

Dick
 
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