On Jul 31, 2015, at 18:34, Alexandre Bergel &lt;alexandre.bergel(a)me.com&gt; wrote: Hi! It would be great to get feedback from you guys. We have the class TRConstraint that allows for roassal elements to be aligned (cf Section 10 in https://dl.dropboxusercontent.com/u/31543901/AgileVisualization/Roassal/010… <https://dl.dropboxusercontent.com/u/31543901/AgileVisualization/Roassal/0104-Roassal.html>). Currently, you can write: TRConstraint use: centralDot alignFromTop: negativeElements Which align all the elements contained in the collection negativeElements against a fix point, centralDot. It looks pretty easy to read. However, the class TRConstraint has many methods (alignFromBottom:, alignFromLeft:, use: aShape alignFromBottom: shapes, …) which are essentially all duplicated code. So, I though about creating a compact class, called RTAlignment. You can now write: RTAlignment new elements: negativeElements; fixedElement: centralDot; top But, I find that less nice to read. Any opinion? Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu <http://www.bergel.eu/> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. _______________________________________________ Moose-dev mailing list Moose-dev(a)iam.unibe.ch https://www.iam.unibe.ch/mailman/listinfo/moose-dev