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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Jezza

function u(t) {

with(Math){Y=frame;for(X=1920;A=X/99,B=Y/99,X--;)if((Z=atan2(C(A),S(B))/PI)*32&1)x.fillStyle=`hsl(${Z*180},99%,50%)`,x.fillRect(X,Y,1,1)}

Mar 26 2019 8:10 AM UTC

}// 137/140

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#atan2

u/donbright

#slowburn

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lars-erik

remix of d/22575 by u/BackendForth

function u(t) {

c.width|=z=270
f=(n)=>960+z*C(n/9)+z*C(n)
g=(n)=>540+z*S(n/9)+z*S(n)
for(i=19;i--;x.stroke())x.moveTo(f(b=t*i),g(b)),x.lineTo(f(a=b+t),g(a))

Apr 20 2021 7:38 PM UTC

}// 140/140

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Bigger remix of u/BackendForth' latest

u/BackendForth

Nice!

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Xen

remix of d/33640 by u/BriSeven

function u(t) {

for(t?C=5:a=T=225;C--;x.fillRect(T*8-t*60%T*8,(5-C)*8+(t*60/T)*60,8*(V=32085>>(a*t&1<<3|a>>A-3&7)&1),8),a=a&~(1<<A)|V<<A)C||(a>>=1),A=C*2+1

Apr 23 2025 4:16 PM UTC

}// 139/140

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Golfed to fit

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ntsutae

function u(t) {

t*=60,t||(c.width=w=640)
for(x.drawImage(c,0,1),i=w;a=t+i^t-i,g=Math.abs(t+a^t-a)%497<255?w:0,--i;)
x.fillStyle=R(g,g,g),x.fillRect(i,0,1,1)

Jun 7 2020 5:42 PM UTC

}// 140/140

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u/katkip

amazing

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yokljo

function u(t) {

w=c.width|=0
n=40
k=n+S(t/n)*n
for(j=10*S(k)-1;j<n;j+=.01)for(i=0;i<10-j;i+=2)x.fillRect(n+w*S(k/(t+9)*j/i),540+C(k/50*j+i)*800,100,100)

Dec 10 2017 11:26 PM UTC

}// 136/140

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Not very exciting, basically just messed with my previous one until it looked like this...

u/donbright

thats pretty cool... like im inside some weird thing

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384.cz

function u(t) {

if(!t){c.width=256
X=Array(200).fill(128)
Y=Array(200).fill(70)
r=Math.random}
for(i=200;i--;)x.fillRect(X[i]+=.5-r(),Y[i]+=.5-r(),r(),.1)

Aug 4 2024 7:12 PM UTC

}// 138/140

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Spreading Virus

u/vain

cool effect - but at the same time scary to think that this is what my incurable cancer could look like, which unfortunately is slowly but surely spreading and seems to be gaining the upper hand.
u/magna

u/vain I'm sorry to hear that
u/384.cz

me too
u/SkibidiHawk

#sigmaboy

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rodrigo.siqueira

remix of d/10850 by u/yonatan

function u(t) {

c.width=i=w=300
x.font=7*S(t/2)+'em"',x.fillText('🛸',99,m=99)
for(i;i--;x.fillRect(0,i,w,i/w))x.drawImage(c,0,m,w,1,-i*4,m+i,w+i*8,.3)

Nov 5 2018 7:37 PM UTC

}// 134/140

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Alien invasion (flying saucer) #emoji

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guhcoder

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<1000;i++)
x.fillRect(i*3+S(t)*1000,0,1,10000) // draw 50x200 rects

May 9 2022 2:42 AM UTC

}// 109/140

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Ow on the eyes

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Xen

remix of d/27960 by u/Thom

function u(t) {

for(i=2e3;i--;x.fillRect(960+960*C(i+t/9)*(S(t+i/99)**4),540+540*S(i+t/9)*(S(t+i/99)**4),9,9))x.fillStyle=`hsl(${i},99%,50%,.1`

Jun 12 2023 4:54 PM UTC

}// 127/140

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quick golf to fit

u/cicmunt

nice

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taupelink

remix of d/19942 by u/taupelink

function u(t) {

r=Math.random;for(i=k=128;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*10)*15,h=k*C(2*T((p=X*.6-X*X/25)+C(Y))*p%Y--),x.fillStyle=R(k%h,h^i,h+k)

Sep 21 2020 12:39 PM UTC

}// 140/140

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d/20024

u/rep_movsd

The eye of Afuru