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Author
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Topic: 3dsmax->opstudio missing/no shadows
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Tailslide
Pilot
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posted 01-21- 12:28 PM
   
Argh.. after applying JT's fix and working on my plane a little more, all the parts have lost their shadowing again, even the ones I haven't worked on ! I spent two evenings alone just texturing my canopy frame. I don't want to lose my rollups by exporting to .obj and back! I think we need a better fix for this, like something we can do in max to correct the problem. I've tried 'unify normals' but it doesn't seem to affect anything. What exactly causes this? Is it a problem with the normals?? Also can someone explain the convex, concave polygon thing without saying it's like a U or L that means nothing to me. I have polys that show in max but not OPStudio or SDOE I have to delete and recreate them before they show up is this why? Yes the normals are pointing the right direction. TS ------------------
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TS Aircombat
IP: Logged |
JT
Pilot
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posted 01-21- 03:46 PM
>I spent two evenings alone just texturing my canopy frame. I don't want to lose my rollups by exporting to .obj and back! I think we need a better fix for this, like something we can do in max to correct the problem. I've tried 'unify normals' but it doesn't seem to affect anything.You can keep "texture coordinates" checked in the import and export dialogue when you run it through to fix the normals. That means you won't have to redo the mapping, at least. >Also can someone explain the convex, concave polygon thing without saying it's like a U or L that means nothing to me. The following diagram illustrates the difference between concave and convex polys. With the convex polys, if you draw a straight line that starts inside the shape and continues past the shape's boundaries, there is no way the line can enter the shape again. With convex polys, the line can exit the shape and enter it again.  [This message has been edited by JT (edited 01-21-2000).] IP: Logged |
Tailslide
Pilot
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posted 01-21- 03:52 PM
There must be some way to fix it from inside of max (or OPStudio?) if we knew what the problem is.. Great diagrams! Very clear. I have problems with some of my faces not showing up unless I go in and delete and recreate them but they are not concave they're triangles. odd. Thanks for the explanation JT ! TS ------------------
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TS Aircombat
[This message has been edited by Tailslide (edited 01-21-2000).] IP: Logged |
Bryan Russell
Pilot
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posted 01-21- 04:40 PM
I don't exaclty know what you mean by lost the shadowing. Do you mean shading? I haven't had any problems with exporting and maintaining textures and shading, not since I found the normal problem anyway, so I guess its possible with the tools that are there. IP: Logged |
JT
Pilot
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posted 01-21- 05:26 PM
TS,
I doubt there's any other way to fix it. Max doesn't use vertex normals, as far as I know. It uses smoothing groups, which have something to do with vertex normals, but aren't the same thing exactly.
Either way, if all your pieces are in the same scene, then exporting and importing and exporting only takes a few seconds.
Look at the bright side... we're dragging files kicking and screaming through 4 different formats.... it's a miracle that it works at all :-)IP: Logged |
Tailslide
Pilot
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posted 01-21- 05:27 PM
You know when you roll your plane against the light and the side away from the light turns dark? Thats what I mean. JT and I both had problems with this I'm glad you haven't. TS
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Tailslide
Pilot
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posted 01-21- 05:30 PM
JT, thx for the tip I'll play around with the smoothing features see what happens. Maybe I'll have to try to come up with some way of automating .obj export/import. It's too much hassle to do every time I want to check out my plane in SDOE. The problem is, even though the texture maps are still there I lose the material assignments and pivot point locations when I export/import to .obj do you have this problem too? TS
[This message has been edited by Tailslide (edited 01-21-2000).] IP: Logged |
Tailslide
Pilot
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posted 01-22- 06:47 PM
I tried automating the export/import but there's no way I can find to programmatically turn normals on/off for the export and import. JT, do your pivot points get fouled up when you do this? I have to reassign textures, reassign pivot points, and re-position my plane pieces every time I fix the shading. Gak. TS IP: Logged |
JT
Pilot
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posted 01-23- 12:20 AM
Sorry, TS... I haven't gotten that far yet. I'm still working on texture mapping.IP: Logged |
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