To fix distortion on the poles, XSI has a special mapping feature called 'implicit' (Clusters/…Texture Projection Def), but this is actually a mental ray feature and doesn't deal with UVs at all. So when exporting meshes you cannot use it, I think. I'm not familiar with Unity unfortunatly, maybe there is a similar feature for spherical projections not using UVs but instead a special projection method (perfect spherical) ?
Otherwise, since a sphere always has poles/singularities you will get distortions on them. Workaround could get rid of the poles by deleting the inmost polygons on each pole, duplicating the resulting (open) edge loop, and scale it to zero. Resulting in many point on the same spot. Then relaxing them in the texture editor. Results could be ok, not sure. Maybe I'm overcomplicating it. Matt Lind needs to chime in :) Can't you use cubic mapping? That should avoid the problem in the first place. sven From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Francisco Criado Sent: Saturday, May 14, 2016 4:30 PM To: softimage@listproc.autodesk.com Subject: Re: equirectangular uv Hi Sven, Tried to use spherical projection for mapping but get usual distortion on the poles, and since i need to export the sphere to unity for mapping 360 it has to be perfect. Cheers, Francisco 2016-05-14 10:49 GMT-03:00 Sven Constable <sixsi_l...@imagefront.de>: Sorry, if I'm misunderstanding your question, but don't you need just a spherical projection using a equirectangular image? sven From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Francisco Criado Sent: Saturday, May 14, 2016 3:17 PM To: softimage@listproc.autodesk.com Subject: equirectangular uv Hi guys, i have a modified sphere on the poles, and tried using unfold to get a uv equirectangular projection. Its been a while since using softimage for uv work so maybe i have the answer just in front of me without notice. Any tips for achieving this? Thanks in advance! Francisco. -- <https://docs.google.com/uc?export=download&id=0BwaBYuN-wyXqdEtjOFEyRlVUTm8&revid=0BwaBYuN-wyXqakNjc3BJWEM1ZlpBRXoyaEVuNHFESGcyVDQ4PQ> ------ Softimage Mailing List. To unsubscribe, send a mail to softimage-requ...@listproc.autodesk.com with "unsubscribe" in the subject, and reply to confirm. -- <https://docs.google.com/uc?export=download&id=0BwaBYuN-wyXqdEtjOFEyRlVUTm8&revid=0BwaBYuN-wyXqakNjc3BJWEM1ZlpBRXoyaEVuNHFESGcyVDQ4PQ>
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