Most Popular Programming Languages 1965 - 2019

AnandGupta · Oct 30, 2019

I found this link in another forum.

The presentation is so cool that I am wondering if we make something similar in B4X, i.e. display big time-line data in such a cool and smooth manner !

And yes, hope B4X goes to top in 2020 !

Regards,

Anand

LucaMs · Oct 30, 2019

My poor COBOL!
And Visual Basic!!! (I still don't understand why C# but not VB.Net!)

Anyway, from 1965 to 2019 in less than 5 minutes; even my watch ran at the same speed

The only Python I know

Erel · Oct 30, 2019

Proof of concept (much smoother than in this animated gif):

Alexander Stolte · Oct 30, 2019

AnandGupta said:
that I am wondering if we make something similar in B4X

Erel: Hold my Animation

LucaMs · Oct 30, 2019

Erel said:
Proof of concept (much smoother than in this animated gif):

Too bad, I was going to do it myself but... making B4X reach first place in 2020, as rightly "required" by Anand

Erel · Oct 30, 2019

BTW, the code is (surprisingly) simple and the same approach can be used for all kinds of transitions.

The main idea is to keep both the current values and the target values and limit the 'change per tick':

B4X:

Dim ct As CTItem = Items.Get(i)
ct.CurrentValue = CalcNewValue(ct.CurrentValue, ct.TargetValue, MaxDelta / FromValueToPixels)
ct.CurrentHeight = CalcNewValue(ct.CurrentHeight, height, MaxDelta)
ct.CurrentTop = CalcNewValue(ct.CurrentTop, i * height, MaxDelta)

Private Sub CalcNewValue (CurrentValue As Float, TargetValue As Float, MaxDelta As Float) As Float
   If CurrentValue <= TargetValue Then
       Return Min(TargetValue, CurrentValue + MaxDelta)
   Else
       Return Max(TargetValue, CurrentValue - MaxDelta)
   End If
End Sub

AnandGupta · Oct 30, 2019

Erel said:
Proof of concept

WOW Erel ! You make dream come true !!

Regards,

Anand

LucaMs · Oct 30, 2019

Downloaded the Erel's project attached to post #3.
Before run it, I wanted to read it.
So I immediately noted a strange "type", CoolTimeline. What is it, I thought? Checked the libraries used... nothing.
Well, it should be a class, then.

A class wrote in a few minutes!!!
What envy !!!

However, I know that this is due to the fact that Erel already has all the necessary future code in mind and that... he dictates the code, he doesn't type it

josejad · Oct 30, 2019

Great¡¡
@Erel, you should publish it in the main forum in order the example be indexed.

AnandGupta · Oct 31, 2019

José J. Aguilar said:
Great¡¡
@Erel, you should publish it in the main forum in order the example be indexed.

This is proof of concept. He will publish the proper class/view of B4X in few days, I presume.

Regards

Anand

Erel · Oct 31, 2019

AnandGupta said:
This is proof of concept. He will publish the proper class/view of B4X in few days, I presume.

This element is too specialized for me to create a library.
It shouldn't be too difficult to take the code and further extend it as needed.

José J. Aguilar said:
@Erel, you should publish it in the main forum in order the example be indexed.

I will move the thread to the questions forum.

LucaMs · Nov 1, 2019

Erel said:
Dim ct As CTItem = Items.Get(i)
ct.CurrentValue = CalcNewValue(ct.CurrentValue, ct.TargetValue, MaxDelta / FromValueToPixels)
ct.CurrentHeight = CalcNewValue(ct.CurrentHeight, height, MaxDelta) ' <------ ? This is not needed/useful
ct.CurrentTop = CalcNewValue(ct.CurrentTop, i * height, MaxDelta)

Erel · Nov 1, 2019

ct.CurrentHeight = CalcNewValue(ct.CurrentHeight, height, MaxDelta) ' <------ ? This is not needed/useful

This is not demonstrated in the example but it can be a nice transition if you add more items at runtime (though you will need to make some additional changes and to remove the "SetNow" flag).

LucaMs · Nov 1, 2019

Erel said:
the same approach can be used for all kinds of transitions.

Erel said:
it can be a nice transition if you add more items at runtime

In fact I was waiting hopefully for some your suggestions, what kinds of transitions you imagined

Erel · Nov 1, 2019

The concept behind the solution is that you can change anything you like and do it nicely using three parameters: Current value, target value and maximum change.

Jack Cole · Nov 3, 2019

Made a small modification. Text moves to left for values between 90 and 100 (so you can still see them). This is a cool class. Thanks Erel!

LucaMs · Nov 4, 2019

Some Wait For is needed, so that all lines reach their final position.

rabbitBUSH · Nov 5, 2019

LucaMs said:
My poor COBOL!

ah @LucaMs -> the DEAMON (sic) java ate it : just like my FORTRAN ! which at least made a comeback along the way and then ... poof

MarkusR · Nov 6, 2019

nice video
but the order at end 2019 i do not believe.

Most Popular Programming Languages 1965 - 2019

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