The method angleInDegree: is defined on RTRotatedLabel to specify the rotation angle. In that case, the rotation depends on the number of methods of a class. You can. But in this example, each labels rotates at a different speed and a particular angle. This is why you have Alexandre > On Jul 8, 2016, at 12:09 PM, stepharo &lt;stepharo(a)free.fr&gt; wrote: > > Alexandre > > I'm trying to understand the logic. > what is angleInDegree: > > Do you know if only one TRVIAnimatedValue would work instead of creating one each > > Le 22/1/16 à 14:46, Alexandre Bergel a écrit : >> Just insect that code :-) >> >> -=-=-=-=-=-=-=-=-= >> v := RTView new. >> seconds := 7. >> timer := TRVITimer new cycleLength: seconds. >> rotationRatio := 0.2. >> shape := RTRotatedLabel new. >> shape >> angleInDegree: [ :cls | >> | valueEnd | >> valueEnd := cls numberOfMethods negated / rotationRatio. >> TRVIAnimatedValue new >> evaluator: [ :t | 0 interpolateTo: valueEnd at: t ]; >> timer: timer; >> yourself ]. >> shape text: [ :cls | ' ' , cls name ]. >> shape color: (Color black alpha: 0.2). >> v addAll: (shape elementsOn: Collection withAllSubclasses). >> v canvas color: Color white. >> v addAnimation: RTResetAllShape new. >> timer start. >> v >> -=-=-=-=-=-=-=-=-= >> >> <Mail Attachment.png> >> >> Cheers, >> Alexandre >> -- >> _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: >> Alexandre Bergel http://www.bergel.eu >> ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. >> >> >> >> >> >> _______________________________________________ >> Moose-dev mailing list >> >> Moose-dev(a)list.inf.unibe.ch >> https://www.list.inf.unibe.ch/listinfo/moose-dev > > _______________________________________________ > Moose-dev mailing list > Moose-dev(a)list.inf.unibe.ch > https://www.list.inf.unibe.ch/listinfo/moose-dev -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;.