Random dweets | Dwitter

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<9;i++)
x.fillRect(400+i*100+S(t)*300,400,50,200) // draw 50x200 rects

} // 122/140

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    u(t) is called 60 times per second.
    t: Elapsed time in seconds.
    S: Shorthand for Math.sin.
    C: Shorthand for Math.cos.
    T: Shorthand for Math.tan.
    R: Function that generates rgba-strings, usage ex.: R(255, 255, 255, 0.5)
    c: A 1920x1080 canvas.
    x: A 2D context for that canvas.

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DaSpider

remix of d/17598 by u/Cloud

function u(t) {

c.width|=0,x.font="55em s"
x.fillText(String.fromCodePoint(~~(0x1F311+7*t%8)),350,840)

Feb 13 2020 3:03 PM UTC

}// 86/140

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Same, but shorter

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katkip

remix of d/3714 by u/snail

function u(t) {

x.transform(540,0,0,540,(c.width=1920)/2,540);
for(i=-t,n=20;n--;i+=t/8)
x.rect(C(i), S(i), C(i), S(i));
x.stroke();

Oct 6 2018 1:53 PM UTC

}// 116/140

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It's actually fun to watch

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vez

function u(t) {

d=f=>{for(X=0;X<c.width;X++)x.fillRect(X,f(X),1,1)};
x.fillStyle=R(S(t+.3)*95+150,55,120,.3);
d(X=>S(t+X/(200))*(S(t+10)*285)+460);

Feb 22 2017 6:38 AM UTC

}// 131/140

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the function d simply draws a function f(x)=y for you :)

u/rjro

reminds me of the #xmb background

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rnbw

function u(t) {

r=Math.random;with(x){for(i=0;i++<99;fillRect(r()*2e3,0,9,2e3))fillStyle=`#456`;font=`8em a`;fillStyle=`#fff`;fillText(u,-t*199,540)}

May 14 2019 3:21 PM UTC

}// 133/140

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residual #quine

u/rnbw

and yes, it isn't strict, but... y'know, it works
u/KilledByAPixel

you can use the code variable instead of u to fix it!

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rodrigo.siqueira

remix of d/24908 by u/rodrigo.siqueira

function u(t) {

with(x)for(i=800;i--;fillRect(~setTransform(i,0,0,i,880+i+3*i*C(i),700+2*i*C(i/400)),~rotate(i/6+t/2),2,2))fillStyle=R(i/5,i/4,i/3,.07)

Feb 11 2022 12:45 PM UTC

}// 135/140

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Misty mountain fog #smoke

Show more comments…
u/tomxor

Simple but very effective!
u/aleamb

wow!
u/vain

OMG! It looks so great. Where do you guys get the ideas & math formulas from?
u/magna

O M G
u/rodrigo.siqueira

u/vain It is the combination of rotations, scaling and translations (setTransform) and transparent color (.07 opacity). I remix and play with parameters and all stems from u/pavel 's Underwater cavern: https://www.dwitter.net/d/18597 My previous dweets are also remix of it. The math formulas (sin and cos) are not the main thing, they just create some almost random numbers with cyclic properties. I can not predict the result only looking to the formulas. I remix and explore combinations and post when I find interessting results.
u/vain

u/rodrigo.siqueira Thank you for your feedback and the nice and detailed description. Keep on your nice work! ;-)
u/joeytwiddle

Beautiful! #cloud #mountain #scene

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ArthurThuczsec

remix of d/23506 by u/ArthurThuczsec

function u(t) {

for(f=i=5e3;i--;x.fillStyle=R(b*i,r,g,.7))x.fillRect(r=i**t*f%2e3,g=f**i*t/99%2e3,b=i/t,b),x.strokeRect(r,g,b,b)

Aug 7 2021 6:50 PM UTC

}// 112/140

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kodierer

remix of d/7918 by u/kodierer

function u(t) {

c.font='48px serif';
c.strokeText ('Dwitter'  10, 50);

May 4 2018 4:13 AM UTC

}// 54/140

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Foldster

function u(t) {

for(i=a=b=-100;i<100;i++)
{r=(t**i)%3
a=(r>2)+a/2+b/3
b=(r<1)+b/2
s=1e3/t
x.fillStyle=R(t,t,t)
x.fillRect(9e2*b+(2-a)*150,5e2*a+s,2*i/t,s)}

May 23 2020 7:50 PM UTC

}// 139/140

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Fractal Hills 3: Moonlit Mountains

u/Foldster

#waitforit

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rodrigo.siqueira

remix of d/28508 by u/rodrigo.siqueira

function u(t) {

for(a=b=0,i=2e4;i--;a+=(r=i*t/b&1)/5-b*S(a*5+r*1.5)/8.6-a*a/3.7,b-=C(a*5)+a*b/8)x.fillRect(7340-a*7e3,b*850-999,.1,t<2)

Sep 17 2023 3:10 PM UTC

}// 119/140

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Splash equation

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username

remix of d/13435 by u/username

function u(t) {

x.font=`7em'`
for(_=9;_--;)for($=16;$--;)x.fillText(String.fromCodePoint(128e3+_+$+t*9^0),$*120-9,99+_*120)

Apr 30 2019 1:05 PM UTC

}// 107/140

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