{"action":"created","issue":{"url":"https://api.github.com/repos/Kinect/RoomAliveToolkit/issues/30","labels_url":"https://api.github.com/repos/Kinect/RoomAliveToolkit/issues/30/labels{/name}","comments_url":"https://api.github.com/repos/Kinect/RoomAliveToolkit/issues/30/comments","events_url":"https://api.github.com/repos/Kinect/RoomAliveToolkit/issues/30/events","html_url":"https://github.com/Kinect/RoomAliveToolkit/issues/30","id":124903973,"number":30,"title":"After calibration when u run the ProjectorMappingsample.exe it opens 2 projector screen & one user view on same machine  but nothing is projected on 2nd  projector ","user":{"login":"devevderyadav","id":3774356,"avatar_url":"https://avatars.githubusercontent.com/u/3774356?v=3","gravatar_id":"","url":"https://api.github.com/users/devevderyadav","html_url":"https://github.com/devevderyadav","followers_url":"https://api.github.com/users/devevderyadav/followers","following_url":"https://api.github.com/users/devevderyadav/following{/other_user}","gists_url":"https://api.github.com/users/devevderyadav/gists{/gist_id}","starred_url":"https://api.github.com/users/devevderyadav/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/devevderyadav/subscriptions","organizations_url":"https://api.github.com/users/devevderyadav/orgs","repos_url":"https://api.github.com/users/devevderyadav/repos","events_url":"https://api.github.com/users/devevderyadav/events{/privacy}","received_events_url":"https://api.github.com/users/devevderyadav/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2016-01-05T06:13:55Z","updated_at":"2016-01-08T17:50:45Z","closed_at":null,"body":"We have  successfully calibrated  2 projector and one kinect but when we run the ProjectorMappingsample.exe it opens 2 projector windows and one user view but nothing is projected  on the second  projector...\r\ndo we need to run the  same sample on other machine connected to 2nd projector as well? or where  r we  going wrong.\r\n![projector](https://cloud.githubusercontent.com/assets/3774356/12108737/eeb11bea-b3a0-11e5-8850-5dd93518896c.PNG)\r\n. \r\n![userview](https://cloud.githubusercontent.com/assets/3774356/12108751/11d42036-b3a1-11e5-9be9-cc7116e386be.PNG)\r\n"},"comment":{"url":"https://api.github.com/repos/Kinect/RoomAliveToolkit/issues/comments/170073022","html_url":"https://github.com/Kinect/RoomAliveToolkit/issues/30#issuecomment-170073022","issue_url":"https://api.github.com/repos/Kinect/RoomAliveToolkit/issues/30","id":170073022,"user":{"login":"thundercarrot","id":11758497,"avatar_url":"https://avatars.githubusercontent.com/u/11758497?v=3","gravatar_id":"","url":"https://api.github.com/users/thundercarrot","html_url":"https://github.com/thundercarrot","followers_url":"https://api.github.com/users/thundercarrot/followers","following_url":"https://api.github.com/users/thundercarrot/following{/other_user}","gists_url":"https://api.github.com/users/thundercarrot/gists{/gist_id}","starred_url":"https://api.github.com/users/thundercarrot/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/thundercarrot/subscriptions","organizations_url":"https://api.github.com/users/thundercarrot/orgs","repos_url":"https://api.github.com/users/thundercarrot/repos","events_url":"https://api.github.com/users/thundercarrot/events{/privacy}","received_events_url":"https://api.github.com/users/thundercarrot/received_events","type":"User","site_admin":false},"created_at":"2016-01-08T17:50:45Z","updated_at":"2016-01-08T17:50:45Z","body":"There are two things at play here. You need to have a good grasp of both. First is the 3D position of the model. You look in the sample code you can find the world coordinate transform created on line 270. This will be in the coordinate frame of your depth camera. \r\n\r\nThe second is the head position. From the video it looks like your head position is naturally in the right coordinate frame because it is using the same depth camera. Note that in the projection mapping sample as it is checked into GitHub, there is a transformation applied to the head position (line 213) that includes a 180 degree transformation about Y and a translation up Y-- this is for the setup in our lab where the body tracking camera is facing away from the projection surface (see the videos on youtube).\r\n\r\nIf you want the illusion of the 3D object hovering above the table, set its pose so that it is above the table, and configure your head tracking transformation appropriately (Identity, if you are using the same camera as you used in calibration). Consider turning the camera around 180 degrees during runtime so that you stand on the other side of the projectors, with the virtual object hovering between you and the projection surface.\r\n\r\nI hope that helps."}}