{"action":"created","issue":{"url":"https://api.github.com/repos/unity3d-jp/AlembicImporter/issues/5","repository_url":"https://api.github.com/repos/unity3d-jp/AlembicImporter","labels_url":"https://api.github.com/repos/unity3d-jp/AlembicImporter/issues/5/labels{/name}","comments_url":"https://api.github.com/repos/unity3d-jp/AlembicImporter/issues/5/comments","events_url":"https://api.github.com/repos/unity3d-jp/AlembicImporter/issues/5/events","html_url":"https://github.com/unity3d-jp/AlembicImporter/issues/5","id":180396655,"number":5,"title":"Bug with tangents?","user":{"login":"dariopixmo","id":22551374,"avatar_url":"https://avatars.githubusercontent.com/u/22551374?v=3","gravatar_id":"","url":"https://api.github.com/users/dariopixmo","html_url":"https://github.com/dariopixmo","followers_url":"https://api.github.com/users/dariopixmo/followers","following_url":"https://api.github.com/users/dariopixmo/following{/other_user}","gists_url":"https://api.github.com/users/dariopixmo/gists{/gist_id}","starred_url":"https://api.github.com/users/dariopixmo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dariopixmo/subscriptions","organizations_url":"https://api.github.com/users/dariopixmo/orgs","repos_url":"https://api.github.com/users/dariopixmo/repos","events_url":"https://api.github.com/users/dariopixmo/events{/privacy}","received_events_url":"https://api.github.com/users/dariopixmo/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-09-30T20:35:37Z","updated_at":"2016-11-17T18:29:08Z","closed_at":null,"body":"When I turn Tangents Mode to 'Smooth', some triangles of the imported Alembic meshes turn black when using a normal & height map.\n\nSetting Tangents Mode to 'Split' also has the same problem - the meshes only look correct if the type is set to 'None' or when I remove the normal / height map from the material. Seems some tangents are just set to zero..\n\n![tangents](https://cloud.githubusercontent.com/assets/22551374/19006084/2e863e12-875e-11e6-8efc-b9176d32d4d1.jpg)\n\nEdit: I am using Unity 5.3.4f1 on Windows 10.\n\nEdit2: After having done some further research, it seems that some of the tangents are indeed set to 0 (actually (0,0,0,-1) or (0,0,0,1)). I tried recalculating all tangents manually for each frame and that fixed the issue, but that is obviously not an ideal solution :)\n"},"comment":{"url":"https://api.github.com/repos/unity3d-jp/AlembicImporter/issues/comments/261328194","html_url":"https://github.com/unity3d-jp/AlembicImporter/issues/5#issuecomment-261328194","issue_url":"https://api.github.com/repos/unity3d-jp/AlembicImporter/issues/5","id":261328194,"user":{"login":"dariopixmo","id":22551374,"avatar_url":"https://avatars.githubusercontent.com/u/22551374?v=3","gravatar_id":"","url":"https://api.github.com/users/dariopixmo","html_url":"https://github.com/dariopixmo","followers_url":"https://api.github.com/users/dariopixmo/followers","following_url":"https://api.github.com/users/dariopixmo/following{/other_user}","gists_url":"https://api.github.com/users/dariopixmo/gists{/gist_id}","starred_url":"https://api.github.com/users/dariopixmo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dariopixmo/subscriptions","organizations_url":"https://api.github.com/users/dariopixmo/orgs","repos_url":"https://api.github.com/users/dariopixmo/repos","events_url":"https://api.github.com/users/dariopixmo/events{/privacy}","received_events_url":"https://api.github.com/users/dariopixmo/received_events","type":"User","site_admin":false},"created_at":"2016-11-17T18:29:08Z","updated_at":"2016-11-17T18:29:08Z","body":"Hey there, I just wanted to check if there is any news regarding this issue? The importer otherwise is really great, and I would gladly help testing if that would help.."}}
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