{"action":"created","issue":{"url":"https://api.github.com/repos/tbeu/Modelica/issues/71","repository_url":"https://api.github.com/repos/tbeu/Modelica","labels_url":"https://api.github.com/repos/tbeu/Modelica/issues/71/labels{/name}","comments_url":"https://api.github.com/repos/tbeu/Modelica/issues/71/comments","events_url":"https://api.github.com/repos/tbeu/Modelica/issues/71/events","html_url":"https://github.com/tbeu/Modelica/issues/71","id":196684683,"number":71,"title":"Make MultiBody.World replaceable","user":{"login":"modelica-trac-importer","id":22202507,"avatar_url":"https://avatars.githubusercontent.com/u/22202507?v=3","gravatar_id":"","url":"https://api.github.com/users/modelica-trac-importer","html_url":"https://github.com/modelica-trac-importer","followers_url":"https://api.github.com/users/modelica-trac-importer/followers","following_url":"https://api.github.com/users/modelica-trac-importer/following{/other_user}","gists_url":"https://api.github.com/users/modelica-trac-importer/gists{/gist_id}","starred_url":"https://api.github.com/users/modelica-trac-importer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/modelica-trac-importer/subscriptions","organizations_url":"https://api.github.com/users/modelica-trac-importer/orgs","repos_url":"https://api.github.com/users/modelica-trac-importer/repos","events_url":"https://api.github.com/users/modelica-trac-importer/events{/privacy}","received_events_url":"https://api.github.com/users/modelica-trac-importer/received_events","type":"User","site_admin":false},"labels":[{"id":504169709,"url":"https://api.github.com/repos/tbeu/Modelica/labels/enhancement","name":"enhancement","color":"84b6eb","default":true},{"id":504177645,"url":"https://api.github.com/repos/tbeu/Modelica/labels/Mechanics.MultiBody","name":"Mechanics.MultiBody","color":"0000aa","default":false}],"state":"open","locked":false,"assignee":{"login":"beutlich","id":14896695,"avatar_url":"https://avatars.githubusercontent.com/u/14896695?v=3","gravatar_id":"","url":"https://api.github.com/users/beutlich","html_url":"https://github.com/beutlich","followers_url":"https://api.github.com/users/beutlich/followers","following_url":"https://api.github.com/users/beutlich/following{/other_user}","gists_url":"https://api.github.com/users/beutlich/gists{/gist_id}","starred_url":"https://api.github.com/users/beutlich/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/beutlich/subscriptions","organizations_url":"https://api.github.com/users/beutlich/orgs","repos_url":"https://api.github.com/users/beutlich/repos","events_url":"https://api.github.com/users/beutlich/events{/privacy}","received_events_url":"https://api.github.com/users/beutlich/received_events","type":"User","site_admin":false},"assignees":[{"login":"beutlich","id":14896695,"avatar_url":"https://avatars.githubusercontent.com/u/14896695?v=3","gravatar_id":"","url":"https://api.github.com/users/beutlich","html_url":"https://github.com/beutlich","followers_url":"https://api.github.com/users/beutlich/followers","following_url":"https://api.github.com/users/beutlich/following{/other_user}","gists_url":"https://api.github.com/users/beutlich/gists{/gist_id}","starred_url":"https://api.github.com/users/beutlich/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/beutlich/subscriptions","organizations_url":"https://api.github.com/users/beutlich/orgs","repos_url":"https://api.github.com/users/beutlich/repos","events_url":"https://api.github.com/users/beutlich/events{/privacy}","received_events_url":"https://api.github.com/users/beutlich/received_events","type":"User","site_admin":false}],"milestone":null,"comments":1,"created_at":"2016-12-20T14:23:19Z","updated_at":"2016-12-20T14:23:28Z","closed_at":null,"body":"**Reported by steffen&#x2e;kuehn&#64;tu-berlin&#46;de on 23 Apr 2008 15:13 UTC**\nIt would be advantageous if one could exchange the gravitation law in the World model in the MultiBody library (i.e. by making it replaceable). This is for example reasonable for the implementation of constraints like a floor or a wall. At the moment it is necessary for this purpose to copy the entire library and then change World to add another gravity type.\n\nMaybe there is even a better way of which I can not think of at the moment.\n\n\n----\n\nMigrated-From: https://trac.modelica.org/Modelica/ticket/71"},"comment":{"url":"https://api.github.com/repos/tbeu/Modelica/issues/comments/268255112","html_url":"https://github.com/tbeu/Modelica/issues/71#issuecomment-268255112","issue_url":"https://api.github.com/repos/tbeu/Modelica/issues/71","id":268255112,"user":{"login":"modelica-trac-importer","id":22202507,"avatar_url":"https://avatars.githubusercontent.com/u/22202507?v=3","gravatar_id":"","url":"https://api.github.com/users/modelica-trac-importer","html_url":"https://github.com/modelica-trac-importer","followers_url":"https://api.github.com/users/modelica-trac-importer/followers","following_url":"https://api.github.com/users/modelica-trac-importer/following{/other_user}","gists_url":"https://api.github.com/users/modelica-trac-importer/gists{/gist_id}","starred_url":"https://api.github.com/users/modelica-trac-importer/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/modelica-trac-importer/subscriptions","organizations_url":"https://api.github.com/users/modelica-trac-importer/orgs","repos_url":"https://api.github.com/users/modelica-trac-importer/repos","events_url":"https://api.github.com/users/modelica-trac-importer/events{/privacy}","received_events_url":"https://api.github.com/users/modelica-trac-importer/received_events","type":"User","site_admin":false},"created_at":"2016-12-20T14:23:28Z","updated_at":"2016-12-20T14:23:28Z","body":"**Comment by otter on 26 Jul 2010 16:49 UTC**\nFixed in 6054d20627bc71d582121813ab0be0529986eabe\n(function World.gravityAcceleration is made replaceable. An example model to demonstrate the new feature is provided as MultiBody.Examples.Elementary.UserDefinedGravityField)."}}
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