OSTER project's Twitter
Translations of tweets from @fuwacina. For an archive of other Vocaloid-related Twitters I no longer keep up with, go here.
May 25th, 2021
You're the only one you can force to do the things you like. Only you can win.
You can search the whole world, but the only entity you can make work endlessly for free is yourself. I feel unlimited potential in that.
[Retweeting Anata Janakereba video] I make things like this. (self-introduction)
So long as I keep doing more videos made by me myself and I, of course I want to get better at art, but I've gotta study movement and presentation and stuff to accompany it too.
Someone teach me AE, please...
It's nostalgic remembering how I went from having no clue how to use my first ever 3D software to making a video over half a year.
Honestly, if I tried to animate 7+ characters for 20 minutes all with manual keyframes, it would destroy my mind.
To get to the root of the matter, when I started making this video, I tried to make it all using keyframes, then partway through I went nuts and started using trig.
[Vocaloid Musical] The Music Wizard of Oz
If you used modulus, couldn't you also have it rotate between three images...?
I see, so you could just use modulus... (head full of trigonometry)
That one's simpler, so it's better to use that. (??)
RT @TumoiYorozu_FBC When I want to make something blink, I tend to use:
Math.floor(time*n%2)*100
(Still, applying trigonometry is important too!)
Even if the graphs are wrong, the approach is usable, so forgive me...
Sorry, I did the graphs wrong in the +1 part... Why's it goin' through the origin?
Moments when math can be visualized like this are seriously great. I feel like if it were taught incorporating this kind of thing, it might make it feel less unapproachable...
The graph of the absolute value of a sin wave has a fun shape too. You can use it for movements like an object bouncing.
Thinking up these kinds of solutions myself is a super fun part of expressions.
The stubbornness of someone who doesn't want to precompose.
Put together a super easy to understand method of making two images automatically alternate with expressions. #AfterEffects #TrigonometryIsGood
1. Base
Math.sin(time*n): As time passes, the value smoothly goes to and fro between -1 and 1. (The *n part controls the speed at which it comes and goes.)
2. Adjust Value
(1) Math.sin(time*n)+1: Adding +1 shifts it so the value goes from 0~2.
(2) (Math.sin(time*n)+1)/2: Dividing the whole thing by 2 adjusts it so the value goes from 0~1. (This form is the easiest to understand)
3. Round It
Math.round((Math.sin(time*n)+1)/2): Use the rounding function Math.round so it goes between 0~1 in a choppy (discrete) way.
4. Adjust Value and Apply to Opacity
100*Math.round((Math.sin(time*n)+1)/2): Multiply whole thing by 100 so it alternates between 0 and 100. By applying this function to opacity, the opacity goes 0% → 100% → 0% → 100% → ...
It's just that easy!!
5. Make It Blink Alternately With Another Image
Graph of Image A's Opacity [0, 100, 0, 100...]
Graph of 100 - Image A's Opacity [100, 0, 100, 0...]
When one of these is 100, the other is 0.
If we apply [the second graph] to Image B's opacity...
Image A opacity: 0% → 100% → 0% → 100% → ...
Image B opacity: 100% → 0% → 100% → 0% → ...
Just like that, the images are displayed alternately.
WOW
Also, AE loops bug out a lot, so I try to avoid using them... When will I be freed from the bug where it disappears on just the last frame...
Whenever I make two pictures alternate by applying trig and rounding functions to the opacity, I think to myself "this is such a messed up way to do this" while I go ahead and do it.
When I'm making movements with cyclical functions, some people might think "wouldn't it be better to precompose it and loop that?", but I have a strong desire to avoid adding unnecessary components and take care of it in one expression line... Want someone to understand that feeling.
Once I learned how to use trig functions in AE, I never wanted to put in another keyframe.
Trigonometric functions are god.
RT @popeetheclown In high school, I was studying math on the train, and the old man next to me spoke up. "Be sure to learn trigonometry. I'm a carpenter, so I use sine/cosine every day. Even the Egyptians used it to build the pyramids." When he got off, he told me "Good luck studying, young man." I use it every day now too, sir.
Cut onions and cried this morning.