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88 Posts Posted -: 17:17:17 I've been trying to get a Strata 6.1.1 model directly into Unity without success. I export as a Collada file, but when I try to import the Collada file into Unity or Blender, nothing shows up. I'm able to re-import the Collada file back into Strata, but it loses all the links to the UV images, asking me to relocate each one. Right now I'm having to export to.obj, open that in Wings, and use the Separate command, then export it as an.fbx which imports then into Unity, minus the UV images. Does anyone else have a problem with files exported to Collada? Regularly Educational. USA 1436 Posts Posted -: 17:53:16 I think you need to find a Collada file that will import into Unity or Blender.
Then import that file into Strata. Then export the file to Collada again and see if Unity or Wings will open it. If Yes, go back and add UV textures and export again. If No, then submit the original Collada file and the mac export version to the engineers to see if there is a format problem in the Strata export. Of course it is always possible Unity and Blender are nit properly reading properly formated Collada files, but since both are not reading the file, it seems more likely there is a problem with the Strata file format.
If you really want to get this working, your need to do some comparison tests to isolate the problem a bit. Britt Inquisitive. 88 Posts Posted -: 19:23:03 I don't have a Collada file handy, unfortunately. I've also found that exporting to dxf gets screwy results, in Blender and Unity. I've even tried two simple cube meshes - no textures or materials applied. Export to Collada, and dxf. Collada gets no result when imported into Unity, while dxf always has 'missing' faces - whichver face(s) are closest to the viewer dissappear.
But if you rotate it, they suddenly appear when they are the farthest away. I've found a second workaround - export to obj, import into Silo, use the Break command (separates the obj into the component parts, instead of 'one' solid mesh). Export the result to.3ds file, and that imports into Unity. I still lose all the names of the parts again, and I haven't tried it with textures to see if they go through yet.
Unfortunately, Silo doesn't have Collada export or save. Edited by - Mark Sweeney on 19:26:35 A Fountain of Information. USA 4991 Posts Posted -: 19:32:38 are you absolutely sure you are not getting any collada import into unity? Some files import into some application at such an extremely large size that you cannot see them, but they are in fact there.
If you have a list of geometry names, and nothing is there, then you probably are not getting an import. If you want to post or send a file, I'll look at it, but since I don't know Unity, i don't know if I will be of any help. Jean Regularly Educational. 88 Posts Posted -: 20:22:46 The Cube imports into Unity, but I have to apply the texture. It 'imports' into strata, but you can't see it, even in wireframe mode. But if you select all, you seen an outline of it. Strata Collada imports just show nothing.
You can select it item in the menu, and zoom in (like hitting Command + '-' in strata) to fill the screen, but there's simply nothing there. And Collada export is one of the main reasons I upgraded. Unity is a free program for creating 3D games - I have the paid iPhone version, but I'm working with the free version until I figure out how to get a good workflow for getting everything into it from Strata. A Fountain of Information. USA 4991 Posts Posted -: 11:01:21 Mark, there are some problems with your file, but I don't know to what extent those problems are a part of the collada format situation. First, this doesn't really look like a Strata file. Was this built in Strata, or built in a different app an imported?
Several of you meshes need to have the faces unified. You may not have seen this yet, but if you don't fix it you will have missing surfaces in the final.
I exported the model to collada format and tried opening it in Ultimate Unwrap, which is a windows application I use for creating Ogre meshes (ogre is another real time 3D format.) When i import the model into Unwrap, whether I use collada or OBJ, the import is not right. It looks as though the triangle winding order is out of whack.
Some applications can fix this, but I don't have time right now to research this any further for you. But this is one reason I suspect this might not have been built in Strata.
I tried importing a direct export of your model for Strata in OBJ into wings, and that crashes Wings. If I fix the surface direction errors, it can be imported into Wings. So, you have some stuff going on in your file that isn't quite right, but I do not know to what extent that might be the cause of the problem in importing this. I'll submit it for the Strata engineers to look at, but it would be helpful to know if this was built in Strata, or if it was built in a different app ad imported. Jean Inquisitive.
88 Posts Posted -: 11:10:57 quote: Originally posted by jpro Mark, there are some problems with your file, but I don't know to what extent those problems are a part of the collada format situation. First, this doesn't really look like a Strata file. Was this built in Strata, or built in a different app an imported?
Strata Foto 1936892 3d Cx 2j For Mac Free
I can't even get a simple strata cube mesh to import into Unity - so I'm not surprised this has some problems. This was built in Strata, UV'd in Silo.
Unity triangulates meshes on import, so rather than relying on it to do that, I did some of the areas myself in Strata, and let Silo triangulate the rest (flat planes). Essentially, I took the final model in Strata, exported each part separately as an obj, imported into Silo for UV mapping, did the triangulation, exported it back out from Silo as an obj. Then I'd open the Strata file, copy and past the new obj into place and add the UV texture.
I'll double check the Unify faces on the meshes. A Fountain of Information. USA 4991 Posts Posted -: 13:46:38 well, you said above that you triangulated part of the items in Strata. Strata used to discard the UVs when it triangulated a mesh, but that is no longer so. I am guessing that whatever triangulation you did, wherever you did it, caused the winding order problem.
I have always done my triangulation in Strata by applying triangle subdivision and setting the subdivision level to zero before export. That way you get non-destructive triangulation, and it has never caused any UV problems.
I have also never seen any winding order problems when i did it this way. All that said, I still wonder if Unity is able to import Collada well. I was going to give you a Collada export from Unwrap Pro, but since your file is too flawed to get a good mesh into Unwrap Pro, I didn't get that far. Jean Inquisitive. 88 Posts Posted -: 15:19:24 quote: Originally posted by jpro well, you said above that you triangulated part of the items in Strata. Strata used to discard the UVs when it triangulated a mesh, but that is no longer so. Jean I could have sworn I saw the UV go wrong when I triangulated on in Strata, but that could just be hallucinations of frustration.
I've rebuilt the model, reimporting each piece, one at a time, Unifying each part, etc. Turns out the coin tray was what gives Wings the fits, so I deleted and rebuilt it from scratch. The whole shebang imports into Wings now, textures and all - I just lose all the names of the parts. Since the obj export gets into wings with no problems now, I'll try another Collada export. 88 Posts Posted -: 15:32:20 After Getting it all into Wings, then exporting as a Collada file from there, it imports into Unity almost perfectly - a couple textures need to be fixed.
However, if I try to open the.dae exported from Wings with Strata, Strata crashes. The file I exported from Strata (same one used to export obj into Wings) as a collada file - won't import properly. It will open in Strata, but it's lost its texture links - it wants me to find them all. Edited by - Mark Sweeney on 15:52:11 A Fountain of Information. USA 4991 Posts Posted -: 16:06:03 Hi Mark, I should be really clear that the triangulation and UVs situation has very very recently been as you said.
They just fixed this for version 6.1.1, which was just released, so this fix is very, very new. So you are right, it used to do this, but has just been fixed. Your reports are going to be very helpful. If you could get the dae export that crashes to the Strata engineers, I am sure they would like to fix this. I'm also sure they are interested in this thread as a whole. Any files you want them to look at can be sent to the support address, or you can post them as you did the earlier one, and I'll pass them on. I have already passed your first model on.
The collada format is very new, and the different software companies are still working out the kinks in getting all the apps to work with it, so send in your files and keep reporting your results, it will get better as more reports are made. Jean Inquisitive. USA 18 Posts Posted -: 02:42:23 It looks like the FBX sdk that Unity uses makes ass-umptions about the order of the sections in a collada file. This is bad on their part, but its something we should be able to work around. I will try to get the work around into the next release. For now if you are familiar with editing xml files you can re-arrange the sections using a text editor. It appears to want them in the following order.
Regularly Educational.
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