Add more easing functions

[willmcgugan]

There are a number of 'easing functions' used by the animation system. At the top of _animator.py you will see the following:

EASING = {
    "none": lambda x: 1.0,
    "round": lambda x: 0.0 if x < 0.5 else 1.0,
    "linear": lambda x: x,
    "in_cubic": lambda x: x * x * x,
    "in_out_cubic": lambda x: 4 * x * x * x if x < 0.5 else 1 - pow(-2 * x + 2, 3) / 2,
    "out_cubic": lambda x: 1 - pow(1 - x, 3),
}

These function have been copied from https://easings.net/ and translated from Javascript to Python. I would like to add the remaining functions to the EASING dict above.

See the animation.py example as a way of testing the above functions.

[rodrigogiraoserrao]

I'm having a go at this. Some of the easing functions will look ugly as one-line lambdas. I'll use short defs for those and then you'll see how it looks. Does that make sense?

[willmcgugan]

Sounds good! Agree re not always using lambda.

[willmcgugan]

Can you assign yourself to this? Want to avoid more than one person jumping on a task.

[rodrigogiraoserrao]

Can you assign yourself to this? Want to avoid more than one person jumping on a task.

I can't, probably don't have permission to do that? I think you have to assign me?

[willmcgugan]

Ah, I guess I do.

[tusharsadhwani]

oh well, I was already done with this one :p

should've messaged first

[willmcgugan]

@tusharsadhwani Really? That was quick. Do you want to compare notes with @RojerGS ?

[tusharsadhwani]

sure, submitting a patch in 5

[rodrigogiraoserrao]

Go ahead and open a PR, I'm currently AFK.

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[willmcgugan]

No need for a donation! ;-)

[rodrigogiraoserrao]

Did I solve your problem? Consider buying me a coffee 🤣

That GH action is a nice addition! To prevent you from adding too many "no donation needed" replies, maybe you'll want to have it not trigger when the issue was opened by you? Just a random thought. Maybe leave it be...

[willmcgugan]

I owe you a ☕

[tusharsadhwani]

@RojerGS if you don't already have one, you should set up a ko-fi account, it's free and they take no commission.

[rodrigogiraoserrao]

I have a Buy Me a Coffee account (associated with my blog) where people can buy me a slice of pizza, maybe I'll move it to ko-fi...

But I do not want Will's coffee for this contribution, and I will refund it if needed 🤣