{"action":"created","issue":{"url":"https://api.github.com/repos/NASAWorldWind/WebWorldWind/issues/631","repository_url":"https://api.github.com/repos/NASAWorldWind/WebWorldWind","labels_url":"https://api.github.com/repos/NASAWorldWind/WebWorldWind/issues/631/labels{/name}","comments_url":"https://api.github.com/repos/NASAWorldWind/WebWorldWind/issues/631/comments","events_url":"https://api.github.com/repos/NASAWorldWind/WebWorldWind/issues/631/events","html_url":"https://github.com/NASAWorldWind/WebWorldWind/issues/631","id":313698937,"number":631,"title":"Collada shape model limitations","user":{"login":"angelozinzi","id":14196558,"avatar_url":"https://avatars2.githubusercontent.com/u/14196558?v=4","gravatar_id":"","url":"https://api.github.com/users/angelozinzi","html_url":"https://github.com/angelozinzi","followers_url":"https://api.github.com/users/angelozinzi/followers","following_url":"https://api.github.com/users/angelozinzi/following{/other_user}","gists_url":"https://api.github.com/users/angelozinzi/gists{/gist_id}","starred_url":"https://api.github.com/users/angelozinzi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/angelozinzi/subscriptions","organizations_url":"https://api.github.com/users/angelozinzi/orgs","repos_url":"https://api.github.com/users/angelozinzi/repos","events_url":"https://api.github.com/users/angelozinzi/events{/privacy}","received_events_url":"https://api.github.com/users/angelozinzi/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":3,"created_at":"2018-04-12T12:09:22Z","updated_at":"2018-04-17T13:04:18Z","closed_at":null,"author_association":"NONE","body":"Hi, I am trying to figure out if World Wind Web could be used as a novel visualization system for MATISSE (http://openplanetary.co/blog/tools/matisse.html).\r\nEven if it should be easily adapted for larger objects (such planets and moons), for small, irregular objects (comets, asteroid) a 3D shape model needs to be used.\r\nI therefore tried to use a shape model in collada format for the comet 67P (target of the ESA Rosetta mission) and I found out that large shape models (i.e., larger than 100000 facets) are not correctly visualized (only in World Wind Web, whereas they are well displayed with normal collada viewers).\r\nTo be precise, the object is visualized up to facet number 100000 (more or less, I don't know exactly the value, but I noted differences when using files with more than 100000 facets).\r\n\r\nIs there a limiting keyword somewhere in the World Wind Web code? Could this be easily disabled if not needed?\r\n\r\nFurthermore, if I try to put the shape model in the centre of the reference system (the origin, the center of the Earth) the shape disappears. I can use every altitude (negative too) larger than -6378137. With this exact value I have no object displayed.\r\n\r\nEven in this case I would like to know if it is possibile to easily overcome this problem or it is reccomended not to use World Wind Web to visualize such objects.\r\n\r\nThanks,\r\nAngelo "},"comment":{"url":"https://api.github.com/repos/NASAWorldWind/WebWorldWind/issues/comments/381984605","html_url":"https://github.com/NASAWorldWind/WebWorldWind/issues/631#issuecomment-381984605","issue_url":"https://api.github.com/repos/NASAWorldWind/WebWorldWind/issues/631","id":381984605,"user":{"login":"angelozinzi","id":14196558,"avatar_url":"https://avatars2.githubusercontent.com/u/14196558?v=4","gravatar_id":"","url":"https://api.github.com/users/angelozinzi","html_url":"https://github.com/angelozinzi","followers_url":"https://api.github.com/users/angelozinzi/followers","following_url":"https://api.github.com/users/angelozinzi/following{/other_user}","gists_url":"https://api.github.com/users/angelozinzi/gists{/gist_id}","starred_url":"https://api.github.com/users/angelozinzi/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/angelozinzi/subscriptions","organizations_url":"https://api.github.com/users/angelozinzi/orgs","repos_url":"https://api.github.com/users/angelozinzi/repos","events_url":"https://api.github.com/users/angelozinzi/events{/privacy}","received_events_url":"https://api.github.com/users/angelozinzi/received_events","type":"User","site_admin":false},"created_at":"2018-04-17T13:04:18Z","updated_at":"2018-04-17T13:04:18Z","author_association":"NONE","body":"You can find the required files here https://github.com/angelozinzi/www-collada-matisse\r\nThere are two dae files: cgprova.dae is ok for visualization, pumpkin.dae is too large and is not visualized entirely.\r\nThanks,\r\nAngelo"}}
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