Ease in - Ease out

[Hamedss]

I sent this suggestions to smith micro when they are developers but they didn't understand what I meant.
So again
Let's talk about it:
Ease in interpolation
Ease out interpolation
As long I was in animation career and working with animation softwares like 3ds max and Maya the there are 2 important interpolation:
Ease in that acceleration to next key is decreasing
Ease out that acceleration to next is increasing
These 2 expressions is mistaken with each other in moho and there is no problem with that.
But the the functions of this 2 modes are not correct and make them useless and needes to be corrected.
See picture below

As you can see in current ease in spacing of frames going to increasing but in halfway they start decreasing. It should go increasing to next key
In current ease out the problem is in first key it should start spacing with maximum spacing and decreasing to next key.
I know we can achieve that with bezier interpolation but why not correct these?
Thanks developers.

[hayasidist]

I think the terminology was corrected in 14.x. If that's not the case, please correct me.

In your example - what is the interp mode of the key at the end of the transition? because if it's "smooth" that might explain why the spacing looks wrong (I think "smooth" tries to smooth the transition both to and from it)

This says more: viewtopic.php?t=36006

but yeah -- greater clarity as to how a key's interpolation mode shapes the curve both into it and from it (especially when one is "smooth") would be useful.

[Greenlaw]

I've always thought Moho's interpolation modes were a little weird compared to 3D and compositing programs I use. Like Hamedss, I'm mainly referring to the Ease modes.

Over the years and through many TV productions, I found I really use only Smooth, Linear, and Step, and sometimes Bezier when it made sense. I don't bother with the three Ease modes because they don't work the way I expect them to. (I should revisit this to remind myself of what exactly I didn't like about them.)

Update: I just looked again, and, yes, the three Ease modes still seem wrong to me.

[Hamedss]

I think the terminology was corrected in 14.x. If that's not the case, please correct me.

In your example - what is the interp mode of the key at the end of the transition? because if it's "smooth" that might explain why the spacing looks wrong (I think "smooth" tries to smooth the transition both to and from it)

This says more: viewtopic.php?t=36006

but yeah -- greater clarity as to how a key's interpolation mode shapes the curve both into it and from it (especially when one is "smooth") would be useful.

Oh thanks. that was long discussion and I read all of it and I am happy that I was not alone. The main problem is in some situations like diagonal movements that needs to change bezier handles in both x and y axis.
With such problems DIY method ( do it yourself) is the better solution by adding new keyframes.

[Hamedss]

I've always thought Moho's interpolation modes were a little weird compared to 3D and compositing programs I use. Like Hamedss, I'm mainly referring to the Ease modes.

Over the years and through many TV productions, I found I really use only Smooth, Linear, and Step, and sometimes Bezier when it made sense. I don't bother with the three Ease modes because they don't work the way I expect them to. (I should revisit this to remind myself of what exactly I didn't like about them.)

Update: I just looked again, and, yes, the three Ease modes still seem wrong to me.

I am agree with you. In The 3ds max every key interpolation devided into 2 part . Before and after the key that you we'll know my friend .
I can clearly see the interpolation of this 2 ease in and eas out
besides of wrong terminologies is totally useless .
Note: the ease in-out type is good but other 2 is wrong.

[Maestral]

Hamedss' graphic example made me certain about what keeps me away from using these Eases but hayasidist's remark about smooth keys interfering with the curve made me think it out again. Then I took into account the influence of the keys on frame 0 (or just simply preceding kf's) and wrapped up a brief experiment.



I still believe the last key in EaseIn and the 1st in EaseOut are the ones spoiling the effect or at least affecting the spacing/timing in an odd fashion.

[lucasfranca]

What has worked for me is spacer, by Alexey Maletin: https://www.youtube.com/watch?v=XPGDhF1luc8

[Greenlaw]

That's very cool! Thanks for the tip, lucasfranca. I'll check it out.