{"action":"created","issue":{"url":"https://api.github.com/repos/openscad/openscad/issues/1382","labels_url":"https://api.github.com/repos/openscad/openscad/issues/1382/labels{/name}","comments_url":"https://api.github.com/repos/openscad/openscad/issues/1382/comments","events_url":"https://api.github.com/repos/openscad/openscad/issues/1382/events","html_url":"https://github.com/openscad/openscad/issues/1382","id":93919868,"number":1382,"title":"CGAL does not seem to acknowledge all polyhedrons","user":{"login":"Zistack","id":2387336,"avatar_url":"https://avatars.githubusercontent.com/u/2387336?v=3","gravatar_id":"","url":"https://api.github.com/users/Zistack","html_url":"https://github.com/Zistack","followers_url":"https://api.github.com/users/Zistack/followers","following_url":"https://api.github.com/users/Zistack/following{/other_user}","gists_url":"https://api.github.com/users/Zistack/gists{/gist_id}","starred_url":"https://api.github.com/users/Zistack/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Zistack/subscriptions","organizations_url":"https://api.github.com/users/Zistack/orgs","repos_url":"https://api.github.com/users/Zistack/repos","events_url":"https://api.github.com/users/Zistack/events{/privacy}","received_events_url":"https://api.github.com/users/Zistack/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-07-09T00:21:23Z","updated_at":"2015-07-09T06:09:04Z","closed_at":null,"body":"I've got a design for a hairstick that uses nothing but a for loop, arrays, and polyhedrons.  When I preview the model, it looks fine.  When I compile and render the model using CGAL, only the single polyhedron which is not in a for loop shows up.  When I export the model to STL, the STL also only has that single polyhedron in it.  There are 18 polyhedrons in all, and none of them are more complicated than a hexagonal prism.\r\n\r\nThis is what it looks like when I preview.\r\n![hairstickf5](https://cloud.githubusercontent.com/assets/2387336/8585096/9f105f0c-25ab-11e5-832e-01e4a8c69778.png)\r\n\r\nThis is what it looks like when I compile and render.  The little piece visible is the polyhedron which is not in the for loop.\r\n![hairstickf6](https://cloud.githubusercontent.com/assets/2387336/8585097/9f13e6ae-25ab-11e5-9509-adf4bdcc99cf.png)\r\n\r\nI have tried reordering the for loop and the lone polyhedron within the source file to no effect.  Putting the whole model into an explicit union also does nothing (not that I expected otherwise).\r\n\r\nIf I comment out the lone polyhedron, the model is empty when run through CGAL.  It seems that all of the geometry in the for loop is being ignored by CGAL.\r\n\r\n<bountysource-plugin>\r\n---\r\nWant to back this issue? **[Post a bounty on it!](https://www.bountysource.com/issues/23973923-cgal-does-not-seem-to-acknowledge-all-polyhedrons?utm_campaign=plugin&utm_content=tracker%2F52063&utm_medium=issues&utm_source=github)** We accept bounties via [Bountysource](https://www.bountysource.com/?utm_campaign=plugin&utm_content=tracker%2F52063&utm_medium=issues&utm_source=github).\r\n</bountysource-plugin>"},"comment":{"url":"https://api.github.com/repos/openscad/openscad/issues/comments/119831310","html_url":"https://github.com/openscad/openscad/issues/1382#issuecomment-119831310","issue_url":"https://api.github.com/repos/openscad/openscad/issues/1382","id":119831310,"user":{"login":"t-paul","id":1330241,"avatar_url":"https://avatars.githubusercontent.com/u/1330241?v=3","gravatar_id":"","url":"https://api.github.com/users/t-paul","html_url":"https://github.com/t-paul","followers_url":"https://api.github.com/users/t-paul/followers","following_url":"https://api.github.com/users/t-paul/following{/other_user}","gists_url":"https://api.github.com/users/t-paul/gists{/gist_id}","starred_url":"https://api.github.com/users/t-paul/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/t-paul/subscriptions","organizations_url":"https://api.github.com/users/t-paul/orgs","repos_url":"https://api.github.com/users/t-paul/repos","events_url":"https://api.github.com/users/t-paul/events{/privacy}","received_events_url":"https://api.github.com/users/t-paul/received_events","type":"User","site_admin":false},"created_at":"2015-07-09T06:09:04Z","updated_at":"2015-07-09T06:09:04Z","body":"Check if the orientation of all faces is correct and all polyhedrons are solid object without holes.\r\n(See https://en.wikibooks.org/wiki/OpenSCAD_User_Manual/FAQ#Why_is_my_model_showing_up_with_F5_but_not_F6.3F)\r\n\r\nIf that shows no problems, please add code to reproduce the issue."}}