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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KilledByAPixel

function u(t) {

with(x)for(i=c.width|=c.style.filter='invert(',translate(i/2,540);i--;rotate(6))fillStyle=R(0,a=99+80*S(i*i+t),200,.2),fillRect(300,0,a,i/a)

Jan 26 2021 5:23 PM UTC

}// 140/140

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Solar Eclipse ☀️+🌑

Show more comments…
u/Xen

nice!
u/KilledByAPixel

#eclipse
u/danny@hille.dk

wow - that is epic!
u/danny@hille.dk

Good looking code and great visuals!
u/danny@hille.dk

good thing dwitter only allows 140 bytes, or someone would probably have done something like this:
u/danny@hille.dk

with(x)for(i=c.width|=c.style.filter='blur(.3vw)invert(',translate(1250,540);i--;rotate(1))fillStyle=R(a=99+80*S(i*i+t),a*3,255,.2),fillRect(60,0,a,i/a);x.drawImage(c,-600,-900)
u/KilledByAPixel

Thank you 😊
u/cantelope

#selfdefeat

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taupelink

remix of d/21498 by u/taupelink

function u(t) {

for(i=k=60;i--;x.fillRect(k*X,k*Y,g=i/t**.5,g))f=i**3*t,X=f*f%32,Y=X*f%18,h=C(q=X%C(X*Y)*i)%C(p=Y%S(q)*i)*i,x.fillStyle=R(h*q,h*p,p*q,1-i/k)

Jan 29 2021 2:45 PM UTC

}// 140/140

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d/21501

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Xen

function u(t) {

c.style.filter=`blur(9px)contrast(3)invert(.9)`
for(c.width|=i=99;i--;)x.fillRect(1e3+C(t*i)*1e3,540+S(t*t+i)*499,i+T(i),i)

Jan 28 2021 1:58 PM UTC

}// 123/140

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just a test

u/danny@hille.dk

It's a blizzard
u/rep_movsd

Try slowing it down with t/=99 and see

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rodrigo.siqueira

remix of d/21456 by u/rodrigo.siqueira

function u(t) {

f = (X,Y,n=120)=>T(S(X+Y/5)*2)<9 ? f(X*X-Y*Y,2*X*Y+.7,n-2):n
for(var i=1920;i--;) {
 x.fillRect(i,t*120,.5-f(i/40000-.45,t/300+.205)/40,2)
}

Jan 27 2021 1:28 PM UTC

}// 140/140

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Black&white #julia noir #fractal noise (code not golfed)

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jdidion

function u(t) {

c.width=900
for(i=0;i<90;i++)
x.font="75px'",x.fillStyle=`hsl(${t*i*29},30%,10%`,
x.fillText("/\\".repeat(90),-100+C(t*2+i/20)*45,i*15)

Jan 26 2021 7:26 PM UTC

}// 135/140

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u/Xen

does look nice
u/DataMeta

cool #opticalillusion

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rodrigo.siqueira

remix of d/21469 by u/rodrigo.siqueira

function u(t) {

f = (X,Y,n=120)=>T(S(X+Y/5)*5)<9 ? f(X*X-Y*Y,2*X*Y+.7,n-2):n
for(var i=1920;i--;) {
 x.fillRect(i,t*120,.5-f(i/40000-.45,t/300+.205)/40,2)
}

Jan 27 2021 3:45 PM UTC

}// 140/140

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Growing thorns.... (just changed Sin amplitude from 2 to 5)

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Qwitter

remix of d/21455 by u/Qwitter

function u(t) {

eval(unescape(escape`𣄽𞄰𞵸𛥦𪕬𫅓𭅹𫅥🔧𘴶𜔲𜔧𞵸𛥦𪕬𫅒𩕣𭄨𜄬𜄬𫔽𜥥𜴬𫔩𞵦𫵲𚅪🔱𜴲𞵪𛔭𞴩𮵧🕌𚤨𜔫𪤯𜔱𧤰𚔫𠴨𭄩𚤱𜄴𞵨🕪𚥍𨕴𪄮𤅉𚤲𛴱𜔫𠴨𩴯𣄭𭄩𛕴𞵸𛥣𫅥𨕲𤥥𨵴𚄹𝤰𚵧𚥃𚅨𚔬𝔴𜄫𜤪𩴪𤴨𪄩𛅧𛴹𛅧𛴳𚕽`.replace(/u../g,'')))

Jan 27 2021 6:21 PM UTC

}// 124/140

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Iris

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danny@hille.dk

remix of d/21456 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,n=98)=>Y*Y>n?n:f(4*X*Y-.61,Y*Y*3-X*X,n+1)
for(m=i=1080;i--;x.fillRect(i*2,t*60,2,1))x.fillStyle=R(0,K=f(i/(m*19-t),t/m),K*K,S(K/9))

Jan 26 2021 6:44 PM UTC

}// 138/140

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blue zap remix

u/Xen

nicely done
u/danny@hille.dk

#fractal

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Qwitter

function u(t) {

w=c.width=64;for(i=2376;i--;)(X=i%w,Y=(i-X)/w,G=C(X*5+9*t)*(Y-16)**2,x.fillStyle=R(60+G/9,Y+X,G+220),x.fillRect(X,Y,1+Math.random()*Y/6,1))

Jan 27 2021 6:57 AM UTC

}// 140/140

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Violently Serene

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smtsjhr

function u(t) {

c.width|=0
x.font='350pt F'
x.fillText(`🦉 🍭${t/2|0}`,100,800)
x.fillStyle='#ff69b4'
x.fillRect(390,500,320*C(Math.PI*t/2)**2,30)

Jan 29 2021 8:24 PM UTC

}// 128/140

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How many licks does it take? #candy

u/smtsjhr

a dumb idea that i think is a good idea. (**only tested with Apple "owl" and "lollipop" emoji**)
u/smtsjhr

boo it seems the tounge needs realigning on iOS