Hi Sean,
How would one do e.g. a ticking clock in Bloc?
I pushed a clock example to the #master branch (BlClockExample clock) Stepping mechanism can be implemented using infinite animation (stepping is nothing else than a special case of animation). Below is a definition of animation used to rotate second hand by 6 degrees every second. BlNumberTransition new onStepDo: [ :aSecond | secondHand transformDo: [ :aTransform | aTransform rotateBy: aSecond * self minuteRotationDelta - 90 ] ]; from: 0; to: 60; *by: 1;* duration: 1 minute The code above says that we should do a number transition from 0 to 60 by 1 (0,1,2,3,4,5,6,7...60) during 1 minute. On every step we rotate our second hand by appropriate angle in degrees. -90 is needed because clock hands start from Pi/2 radians on a unit circle. In the end we get the following animation: [image: Inline images 1] P.S. In attachment I also send a high quality video. Cheers, Alex On 25 November 2017 at 23:58, Sean P. DeNigris <sean@clipperadams.com> wrote:
Bump :)
Sean P. DeNigris wrote
How would one do e.g. a ticking clock in Bloc? The only possibly relevant example I see is BlAnimatedCursor. Is that a typical usage? One thing that I'm not sure how to translate to a BlElement is that the cursor seems to be responsible for starting and stopping the animation via #activateOn:, which doesn't exist for an element. How would one prevent an element's animation from continuing to run after a space was closed?⦠I guess I mean what is the Bloc version of #step that would enable us to do e.g. Squeak's mouse-eyes-tracking-the-cursor or Lively Kernel's clock: https://upload.wikimedia.org/wikipedia/commons/5/5e/Chromium 5.0.375.99_showing_lively_kernel_using_gtk%2B_theme.png
----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html
