upspring woes - Page 3

upspring woes

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smoth
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Post by smoth »

maestro wrote:Hi, speak about topics :
Ive got new problem again, namely smoothing....
How the upspring handle smoothing ? any principle ?
Coz I found upSpring will NEVER smooth my object properly...
Ive try weld and unwelding but Upspring never smooth my mesh in the same way I smooth it in the modeler :x Ogh *(DESPERATE)* :cry:
can you explain what you mean by smoothing? are you talking about the way they handle normals? are you talking about mesh smoothing ??
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Argh
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Post by Argh »

Maestro, Spring smooths based on a shader that looks for > 6 facets around a common point. In short, if you want to have things that look "true round", use 6 or more sides. The smaller the angular disparity between the facets (i.e., the flatter the angle), the smoother this gets- which is why my cone-like Spire Rook, which has 16 sides, looks almost perfectly round in the game engine:

Image

Now, this was with welding ON.

For a counter-example, check out the Lord. To make sure that it was not smoothed, I used a tool that can completely remove all smoothing from the mesh (in short, it seperates all the facets from each other and un-welds everything).

See how many sides the Lord's arms have? Clearly, more than 6. Yet, it's nice and faceted (which, again, was on purpose, not a modeling error).

Image
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smoth
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Post by smoth »

that should sooo be in the wiki.
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FLOZi
MC: Legacy & Spring 1944 Developer
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Post by FLOZi »

Maestro is having the same problem as me that Upspring doesn't always interpret welding correctly.
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smoth
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Post by smoth »

are you importing a 3ds or obj? I find 3ds files tend to get unwelded in some progies.
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FLOZi
MC: Legacy & Spring 1944 Developer
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Post by FLOZi »

obj
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smoth
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Post by smoth »

hmm. I can upload one of my maped objs. If you want look at it.

Maybe it is something the with the uvmapping prog. I know 3ds max would unweld things.
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Argh
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Post by Argh »

Um, I always use 3DS, and import the entire model (with subgroups) in one file. Dunno if that's vital or not, but it may be. Remember... S3O is really almost exactly the same as 3DS... Zaphod was originally intending to fully support 3DS animation timelines and stuff, too, I believe (although, as I've said before, I'd prefer an UpSpring-based animation solution using BOS/COB and a previewer, myself).
maestro
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Post by maestro »

FLOZi wrote:obj
same here, quad obj... coz I hatez tris :(
ill post pics of object example soon
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smoth
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Post by smoth »

maestro wrote:
FLOZi wrote:obj
same here, quad obj... coz I hatez tris :(
ill post pics of object example soon
objs can have tris.
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Argh
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Post by Argh »

... and Spring is a trimesh rendering world. Quads are split into tris on each rendering pass.
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FLOZi
MC: Legacy & Spring 1944 Developer
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Post by FLOZi »

my objs were triangulated
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smoth
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Post by smoth »

FLOZi wrote:my objs were triangulated
yeah, dude something odd is happening on export. I have always kept my quads on export. That is really odd, what program were you using?
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Zenka
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Post by Zenka »

I always triangulate my obj before exproting. It works fine.
You won't have to do it though. you can let upsporing handle that. very, very rarly it goes wrong. (with an object where I removed to many edges of, but I could fix that back in maya).
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FLOZi
MC: Legacy & Spring 1944 Developer
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Post by FLOZi »

smoth wrote:
FLOZi wrote:my objs were triangulated
yeah, dude something odd is happening on export. I have always kept my quads on export. That is really odd, what program were you using?
Tried with Ultimate Unwrap and Milkshape, eventually got it to work by messing around with both but I don't have a solid, certain way to get it to work. :|
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smoth
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Post by smoth »

wow, that is odd. I wonder, have you did a check on milkshape's site? there may be something about unweilding.. that is really odd.

The thing is when making a texturemap if you do the unwrap wrong in a way that sepperates all of your verts it does do some level of unweilding. I always try to avoid it by putting my maping in a way where it is closer to cylindrical mapping. Argh, you are more familiar with this, any ideas?
maestro
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Post by maestro »

OK ill try cylinder map...
I dont use Unwrap or anything, just my beloved Lightwave :)
maestro
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Post by maestro »

Image
here is the smoothing problem I got...
surface that separated in the UV became unsmoothed in Upspring
(it is a perfect sphere in the modeler :( )
Any way /freeware to solve this or I got to do extra careful work with object separation ?[/img]
maestro
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Post by maestro »

Awww... can anyone tell me how tosolve this ? or at least tell me some free UV mapping or converter tool that solve this ?
Ive tried biturn but it mess my UV structure everytime I convert the lwo to obj
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smoth
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Post by smoth »

no idea. I have yet to have this issue in wings. I used 3ds max and got the same thing.

Ask ender, he may know.
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