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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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cth103

function u(t) {

x.font='40pt Arial',x.fillText(''+u,350,550);

Nov 9 2019 1:48 PM UTC

}// 45/140

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simple quine

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lewdev

remix of d/28705 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`䄽弽㹔㵓⡔⨷⥼簱ੂ㵟㴾刽⡒⨹籼⸹⤥ㄊ砮景湴㴧⸵楮∧㬊䘽挽㹸⹦楬汓瑹汥㵣㭈㴱〸《景爨椽㈻椭ⴻ⥻䙠⍆䙆总砮晩汬剥捴⡘㵩㼹㤺䠬夽琪㌪䠥䠬䠬㘰⤊䙠⌰〰怊砮晩汬呥硴⡩㽁⠩㩂⠩ⱘⱙ⥽`.replace(/u([^D].)/g,'$1%')))

Oct 18 2023 10:24 PM UTC

}// 136/140

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Observing the Two Randoms

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donbright

function u(t) {

c.width=2e3
for(i=0;i<t*t;i++){Φ=Math.acos(1-2*i/t/t)
Θ=10.1664*i
x.fillRect(
500*(2+C(Θ)*S(Φ)*S(t)+C(Φ)*C(t)),
500*(1+S(Θ)*S(Φ)),9,9)}

Sep 7 2018 4:57 AM UTC

}// 135/140

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Evenly spaced points on a sphere, based on CR Drost's phyllotaxis sunflower cylyndrical equal area map in python: https://stackoverflow.com/questions/9600801/…

u/joeytwiddle

Useful! #sphere
u/Odog8

Love me a PHI sphere in the morning!

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robotkernel

remix of d/12065 by u/elaborate

function u(t) {

c.width=1920;for(i=0;i<1200;i++){t-=T(i);x.fillRect(T(t/2)*100,i*20,50,10)};

Feb 1 2019 4:40 PM UTC

}// 76/140

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donbright

remix of d/1816 by u/SpecialAgent

function u(t) {

t?Δ=[]:P=[99,0,0,0,1,0,0,.6]
for(Q=i=4;i--;)Q+=(Δ[i]=P[(2+i)%4]-P[i])**2/2
for(j=4;j--;)x.fillRect(P[i=j*2],P[i+1],2,2),P[j]+=P[j+4]+=Δ[j]/Q

Mar 24 2017 11:16 PM UTC

}// 140/140

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Quickstart - alter numbers in P for fun patterns. Long description - this is a simulation of two body gravitational motion using a simplified form of Calculus.

u/donbright

combine F=ma with F=GM1M2/R^2 except that G=1, M1=1, M2=1 and r^2 is r
u/donbright

Explanation here https://www.patreon.com/posts/simulating-in-…
u/donbright

oh btw P[x1,y1,x2,y2,xv1,yv1,xv1,yv2] where 1,2 = object 1,2, x,y=position, v = velocity initial
u/codeslaw

This is incredible!
u/donbright

#physics

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rodrigo.siqueira

remix of d/35415 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
x.fillStyle=R(120,n=X=Y=t)
for(i=6e4;i--;x.fillRect(3e3+Y*4e3,90-X*3e3,t<2,.1))X=S(X*X-Y*Y/2)*2,Y=C(2*n*Y+2),n=X

May 22 2026 5:44 PM UTC

}// 137/140

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Neon green

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ximavus

function u(t) {

t?x.beginPath(M=500):x.translate(960,540)
x.moveTo(X=S(t)*M,Y=C(t)*M)
x.bezierCurveTo(X,Y,S(t)*M,C(t+M*t)*M,X+99,Y)
x.stroke()

Feb 28 2026 6:18 PM UTC

}// 126/140

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Weird bezier wave circle

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jylikangas

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𩡩𫁴𩑲🐢𨡬𭑲𚀱𭡨𚑳𩑰𪑡𚀩𪑮𭡥𬡴𚀮𞐢𒡦𫱲𚁣𛡷𪑤𭁨👩🐭𞐻𚰫𪐼𞐻𤠽𨐽🡸𛡬𪑮𩑔𫰨𜐵𜀫𨐪𝰰𛰨𮠽𪠭𭀪𝐥𜐩𚱃𚁴𚐪𜠰𛀹𜀫𚀹𜀫𤰨𪠫𭀪𝐦𨑼𞐩𚠴𜀭𨐪𚠴𚐯𮠩𚑦𫱲𚁪🐲𜀻𮀮𨡥𩱩𫡐𨑴𪀨𮀮𬱴𬡯𪱥𚀩𚐬𤠨𪐩𛀭𛑪𞱒𚁩𚰱𚐩𤠨𪐩`.replace(/u../g,'')))

Feb 10 2020 3:57 PM UTC

}// 140/140

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To celebrate the launch of devaja.fi

Show more comments…
u/KilledByAPixel

😲
u/rodrigo.siqueira

This is a scene from Dragon's Lair game, where balls were rolling on this grid.
u/sigveseb

no way! daaaamn
u/tomxor

Woaaah! O_O
u/lionleaf

Holy ...! :O
u/katkip

Wow
u/hoplite

Reminded me a bit of https://www.youtube.com/watch?v=6juR6rzAolU :)

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rsc

function u(t) {

m=30
d=m-~~t
c.width=1920
x.font='600px mono'
x.fillStyle=`rgb(${100-(d*100/m)}%,0%,0%,1)`
x.fillText(d<0?"done!":d,80,500)

Jun 7 2024 5:32 PM UTC

}// 123/140

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Scrum Daily Standup Timer

u/joeytwiddle

#productivity #tool

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ArthurThuczsec

remix of d/24028 by u/mxfh

function u(t) {

for(τ=97/(t|0*7),c.width^=i=7;i<2e3;i+=τ/13+S(t)/717)x.arc(960,540,i**(-.91+T(t*t)/i)*1e5,a=i+t,a*t)
x.stroke()

Oct 7 2021 5:22 PM UTC

}// 111/140

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Kalm