Hi, For my topic (Hiveplot implementation). I made one new layout called RTRectLineLayout. That takes angle in parameter and draw your line with angle about origin (0,0). Should I add this implementation to Roassal ? Few screens about : ​ Capture du 2015-01-26 15:24:31.png <https://docs.google.com/file/d/0B0u9sxblZpSsR0liSW90NUFOWTQ/edit?usp=drive_web> ​​ Capture du 2015-01-26 15:23:15.png <https://docs.google.com/file/d/0B0u9sxblZpSsRk9ZX1BDU1BTbzA/edit?usp=drive_web> ​​ Capture du 2015-01-26 15:16:40.png <https://docs.google.com/file/d/0B0u9sxblZpSsRzR6LXRFeU9QNmM/edit?usp=drive_web> ​​ Capture du 2015-01-26 15:16:09.png <https://docs.google.com/file/d/0B0u9sxblZpSsRTZxcG5td1NjVWs/edit?usp=drive_web> ​ Here, one example of code : =================================== m :=RTMondrian new. l := RTRectLineLayout angle:135. new. s := m shape. s circle size:50. m nodes: (1 to: 20). m layout for: [ :e | true ] use: l. m build. m view. =================================== I created two constructors with vertical and horizontal angle. What do you think about it ? If you want, how can I commit this ? Thank you, Cheers, Jonathan.