Im using the blender rc3, and when ever I export either to 3ds or wavefront (I only use those), the model is being cut apart at the seams or by different material indices. I have tried a lot of different things to stop it but nothing seams to work. Any Ideas why this is happening?? I would appreciate any ideas, thank you. Oh yeah the model is uv , mapped also.
I didn’t know they have released an RC3 version yet but anyway, what format are you exporting to? Let me know and I will try it out in XSI to see if it affects things. I will use the release candidate 2, may have different experiences if your using a later release though.
By the way, do you have a sample screen capture of the problem, and the file you are using to download and test out?
hi, probably a Python or interface q . . .
but, while we are here. . If you select “Material Groups” on the export options then the script will cut the mesh along the lines of the materials and that will give the seams. Is that what you are seeing?
Im exporting it a wavefront obj, but I only have object grouping selected. (ok whatever is the lastest dev release of blender then).
It is possible your seams are being created at the time of import. I tried again and the meshes are showing up as expected when exported from blender. No seams only materials. RC2 and a few more here.
How do I use no seams on a uv mapped object ?? I mean doesnt there have to be seams??
hmm. Well, ok. For clarity, a geometric seam is two rows of vertices running concurrently in 3D space. That is, two disjointed sets of vertices occupying the same locations. A UV seam is a division between two mapping schemes that lie on top of the geometry. As a rule, when you say ‘seam’ with regard to the export of geometric objects it’s generally assumed that you are referring to the geometric variety.
To create multiple UV mapping coordinates in blender I would enter face mode for a given mesh and unwrap only the selected faces. Then repeat for each new area I’d assign coordinates to. You don’t really need geometric seams in your mesh to do this.
Assuming your mesh has no geometric seams to begin with and that you’ve assigned multiple materials, exporting your blender mesh to obj format with the grouping options deselected will result in an obj mesh that is seamless. Exporting to obj with material groups enabled will result in separate meshes grouped together and having geometric seams.
However UV coordinates don’t create geometric seams when you export and your UV solution will remain intact and, if you do have UV seams in blender, the UV seams should still be right there when you export the obj. (I say should because I have sorry software that is dumbing down the interface for the end user.)
So the question is, which type of seam are you referring to? Also, which application are you importing to?