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More clarity of the use updater and ValueTracker

See original GitHub issue

There are now so many ways to update mobjects, and I am getting confused by it. One thing that I really find strange is the dt parameter. Here I have three examples of updaters: https://manimce--526.org.readthedocs.build/en/526/examples/test.html

Number 1 is working

def my_updater(mobj,dt):
       mobj.shift(UP*0.01)

Number 2 is not working (Only difference to 1: the dt parameter is removed)

 def my_updater(mobj):
      mobj.shift(UP*0.01)

Number 3 is working again (Only difference to 2: a valuetracker is added)

v_tracker = ValueTracker(0)
def my_updater(mobj):
      mobj.shift(UP*0.01)

How do we want to get this more intuitive? Maybe getting rid of the dt parameter in updater?

Issue Analytics

State:
Created 3 years ago
Comments:5 (4 by maintainers)

Top GitHub Comments

1reaction

behacklcommented, May 28, 2022

At the time being, there are time-based and non-time-based updaters, and the distinction (occasionally) makes sense. I think the clarity regarding which type of updater to use when would improve by cleanly separating their interfaces, #321 – and one issue is enough to track this, so I propose closing this one.

0reactions

leotrscommented, Nov 21, 2020

#752 will close this.

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