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LOD's

J

jorritvandommelen

Messages
91
Just a question,
I was just trying something with LOD's etc. I looked also in the tutorial of the microsoft gamepack SDK (after I tried somethings). That says all parts of the building has to be linked to a dummy object with the same name as the file, and they also said that the object must have the following name: [filename]_LOD_XXX. I didn't linked all object to the dummy object and didn't give the dummy object the same name as the file, but it seamed to work. Did microsoft put those information there just for fun or am I wrong??

Jorrit
 
And a second question:
Where can I find a document or table or something, which tell when each LOD load: Example: LODXXX load when XXX meters away.
 
I always tried it as given in the manual, so I don't know if the other method also works. I should try that to know.

About the distances, I have no idea how they calculate them. If you look in the source you see the values, but I don't know if they are fixed or depending on the object. In general it is a certain amount of pixels used for your object, that is what is used to determine which LOD is shown.
 
Basically, the bigger the object, the bigger the distance before the next LOD level is shown.

To create the LOD's, the best way I have found is as follows:

Dummy object - nameoffile
Get all your objects, group them, call the group - nameoffile_LOD_100

that is your high level model done...

then, copy that group, and call it nameoffile_LOD_50 (the group)

Hide nameoffile_LOD_100, and ungroup the LOD_50 set and work away on the lower model. When you are done, regroup that and give it the nameoffile_LOD_50 name again.

Same for the other levels.

Cheers,
 
I had to run some experiments to get a feel for it myself. I put wacky objects in place of subtle model changes so that it was easy to see when they changed.

I do that often with scenery design....make simple objects with simple textures to demonstrate concepts.

Interesting that you say the method prescribed is not necessarily required...I've always just done what they've written in the sdk.

Bob B
 
I came across by accident, was just trying something without reading the tutorial. I turn by whole building, but I had hidden the other LOD. When I was in the sim and going away from the building it turned, because the other LOD loaded, it was strange to see, but then I realized that it worked what I did, I read the ms tutorial about LOD's and it was very different from my method. Maybe they did it only to keep it organized, but I think it is not necessary, to give those things a special name.
 
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