Dwitter - javascript demos in 140 characters

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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Pascal

remix of d/22252 by u/Pascal

function u(t) {

for(c.width|=0,i=2300;i--;x.fillRect((X*100+((1e3+T(t+Y))**(1/C(t)))*300)%1995-25,Y*10,50,10))X=i%21,Y=(i-X)/21

Mar 29 2021 9:55 PM UTC

}// 111/140

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tv static

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erin

remix of d/11739 by u/katkip

function u(t) {

c.width=e=1920,x.globalCompositeOperation='xor',x.fillRect(0,540,e,e)
for(i=9;i--;)x.fillRect(400+i*100+S(t)*300,400,50,200)

Mar 30 2021 2:47 PM UTC

}// 124/140

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golf because why not, implementation is significantly more boring

u/New_Core

for(c.width|=i=9;i--;x.rect(0,540,e=2e3,e))x.rect(400+i*99+S(t)*300,400,50,200) x.fill("evenodd")

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Pascal

remix of d/22172 by u/Pascal

function u(t) {

for(c.width|=i=162;i--;)x.fillRect(550+300*T(t*2+(S(i*i+t)*S(t*3))**7)/50+(a=i%9)*100,400+(i-a)/9*11*(1-3*S(i*i+t)*S(t*3)**299),50,11)

Mar 27 2021 9:00 PM UTC

}// 134/140

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u/doughno

#default
u/magna

#glitch
u/andrea270872

very "old TV"! great

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erin

remix of d/11578 by u/Xen

function u(t) {

for(e=i=125;i--;x.fillStyle=R(v=+S(i+210)*e+e,v,v))x.fillRect(S(i)*e+960,C(i)*e+540,25,25);x.drawImage(c,-17,-8,1954+S(k=t*4)*9,1099+C(k)*9)

Mar 29 2021 12:58 PM UTC

}// 140/140

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infinite donut spiraling in

u/Xen

nice!

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BackendForth

function u(t) {

c.width|=0
for(i=1920;i--;)
x.fillRect(i,540+S(i/399+t)*350+S(i/9)*S(t)*t*9*.9999**((i-t*299%2490+300)**2),1,99)

Mar 31 2021 12:37 PM UTC

}// 112/140

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BackendForth

remix of d/22153 by u/BackendForth

function u(t) {

for(c.width|=0,q=1-2**-t,i=a=999;i--;)x.fillRect((i+t*q)*a%1920,i**i%a,9,9)
x.translate(a,k=540)
x.rotate(2+q)
x.fillRect(-k-t*99,0,a,150)

Mar 29 2021 4:25 PM UTC

}// 138/140

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Free at last! #suez #evergiven

u/erin

i'm sad, it was fun it being stuck
u/BackendForth

It was meme whose greatness was rivaled only by its cost :P

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kian

remix of d/22295 by u/kian

function u(t) {

for(i=3e3;--i;x.fillRect(460+9*X*T(Y),-9*X*S(Y)+750,w=i/2**t,w))f=i*t,X=f*f%200,Y=X*f%4,x.fillStyle=R(q=i*(X**.3+Y<<2),q%T(X>>3)*i,q**.5,.1)

Mar 30 2021 6:42 PM UTC

}// 140/140

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between bunny hills

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Pascal

function u(t) {

for(c.width|=i=128;i--;x.fillRect((X*100+(.5+S(t+Y)/2)*300)%1998-50,Y*210,50,210))X=i%21,Y=(i-X)/21

Mar 29 2021 9:38 PM UTC

}// 99/140

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#default wall

u/BackendForth

Great illusion, tried it once before: https://www.dwitter.net/d/6575

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magna

remix of d/22308 by u/magna

function u(t) {

f=_=>S(t*2+(Y-18)*(X-32)/69)
for(i=3e3;i--;x.fillRect((X*2+1-v*v)*15,Y*30,v*v*30,30))v=f(X=i%64,Y=i>>6),x.fillStyle=R((v+1)*99,X^Y,Y*4,.2)

Mar 31 2021 4:48 AM UTC

}// 138/140

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KilledByAPixel

remix of d/22160 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑬𪑮𩑗𪑤𭁨👴𙐵𚠹𛁓𚁡👴𯁳𭁲𫱫𩐨𚐩🠮𞑼𭀥𞐼𜐿𨡥𩱩𫡐𨑴𪀨𩡩𫁬𤱴𮑬𩐽𙰣𨐰𜀧𚐺𫁩𫡥𥁯𚀹𞐫𚁴𛰹𯀰𚐪𜠱𜰭𝠷𚡃𚁺👴𚠹𚡓𚁡𚐩𚡓𚁡𚡡𚐬𭀥𞐪𜐰𞐫𝠹𚡃𚁺𚐩𛁦𫱮𭀽𙰸𩑭𘠧𛁦𪑬𫁔𩑸𭀨𙱜𭐳𜡄𠠧𛀱𝐲𜀫𤰨𭀩𚠹𛀱𩐳𚱃𚁴𚐪𞐩`.replace(/u../g,'')))

Mar 28 2021 5:20 PM UTC

}// 139/140

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Ancient Calligraphy 📜

u/magna

Lovely!
u/KilledByAPixel

Thank you! This is a becoming a fun series to work on.
u/rodrigo.siqueira

This form of artistic writing is known as 書道 (shodō), meaning "way of writing". Nice strokes of Cursive Script (sōsho) of an ancient Hiragana, Katakana and Kanji calligraphy artwork. It even includes the Hanko (red stamp of artist's signature) in the bottom! Unfortunatey I was not able to translate this, but it seems to be some kind of poetry from the Han Dinasty.
u/hvianna

The spreading ink effect and the red stamp are really nice touches!