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Changing LOD range in FSX

A

Andras Kozma

Messages
25
Country
hungary
Hi folks, I would really love to get some help from any of the x.file experts.
I need to change the range of LODs of several FSX scenery objects, all use 3 levels of LOD (_100, _50,_10).
With the old .asm file it was easy, we just had to change the IFSIZEV values according to our preference. The x.file in FS9 used the very same structure, which I didn't understand in the FS9 times either, but because of the final .asm file I didn't have to worry about that.
But now, before running an .x file through XToMdl.exe I need to modify the range values in the x.file itself.
The only thing I know is that it is done through changing the TransformMatrix values, but have no idea how to get the values that makes sense. So it looks like:

Frame frm-anything_blue_LOD_10 {
FrameTransformMatrix {
0.016934, 0.000000, -0.000000, 0.0,
0.000000, 0.016934, -0.000000, 0.0,
-0.000000, -0.000000, 0.016934, 0.0,
0.033915, -0.010673, -0.583156, 1.0;;
} // End FrameTransformMatrix

How to understand and convert these values to get the LOD ranges I prefer?
Do I need to change all of the TransformMatrix values, or there is a particular one for the purpose? How to convert them to values I can understand?

thanks for any help
Andras
 
Andras Kozma said:
The only thing I know is that it is done through changing the TransformMatrix values
Click to expand...
Sorry I don't know the answer, but I believe that you're mistaken about this matrix. The FrameTransformMatrix is for rotating/translating the object.
 
Marginal said:
Sorry I don't know the answer, but I believe that you're mistaken about this matrix. The FrameTransformMatrix is for rotating/translating the object.
Click to expand...

LODs actually mean animation in FS and all animated objects are transformed via one or more matrix.

Andras
 
Hi Andras,

I agree with the posts above. I don't think the matrix has anything to do with the LOD switching.

Looking at the FsX MDL format, I think the only parameter that can influence the distance is the value you give the LOD. So the 100, 60, 40, etc. Unlike the Fs2004 MDL format the check is not written down in the MDL anymore, only this number is stored. So I guess the switching logic is somewhere in the scenery engine.
 
Yes, references to LOD models are stored in a LOD table in a MDL and the switching is done in real time by scenery engine.
 
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