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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katkip

remix of d/5042 by u/BackendForth

function u(t) {

f=(a,b,r)=>{x.lineTo(a,b,r/2,r/2);if(r>1){w=(r)/9+t,f(a+C(w)*r,b+S(w)*r,r/2),f(a+S(w)*r,b+C(w)*r,r/2)}},c.width=1920,f(960,540,250),x.fill()

Oct 5 2018 10:12 AM UTC

}// 140/140

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Purpzie

remix of d/10207 by u/Purpzie

function u(t) {

'‮';for(i=64;i--;)x.fillStyle=`hsl(${i*5+t*30} 60%${S(t*3)*25+50}%`,x.fillRect(i*30,S(4*t+3*i)*99,20,99);x.drawImage(c,S(t)*5,5+(0|C(t))*5)

Oct 4 2018 8:07 PM UTC

}// 139/140

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same as before but now it's WITCHCRAFT.

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prplz

remix of d/9912 by u/prplz

function u(t) {

x.strokeRect(960+C(t*=3)*300,540+S(t)*300,T(t*=10)*9,T(t)*9)

Oct 4 2018 7:45 AM UTC

}// 60/140

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u/13thptr

nice sub-64 #abstract
u/13thptr

art
u/13thptr

*

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veubeke

function u(t) {

r=c.offsetWidth/(c.width^=0)
t?o?(m+=o/60,n+=p/90):0:o=!(m=n=300)
c.onmousemove=e=>(o=e.x/r-m,p=e.y/r-n)
x.font='80px"'
x.fillText('🚁',m,n)

Oct 2 2018 2:54 PM UTC

}// 139/140

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Surveillance helicopter – it only sees you when you move

u/donbright

hmm my firefox doesnt seem to like it
u/donbright

oh now it works! re-scrolled and scrolled back here. nice.
u/joeytwiddle

#interactive

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Purpzie

remix of d/2168 by u/jczimm

function u(t) {

with(x)t<9&&beginPath(fill()),fillStyle=R(S(t*23)*127+99,0,99),arc(960+T(t*10)*50,540+S(t/2)*30,t*30,t*15-1,t*15)

Oct 3 2018 7:48 PM UTC

}// 113/140

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feathery paint strokes

u/donbright

cool

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yonatan

remix of d/10175 by u/yonatan

function u(t) {

eval(unescape(escape`景爨挮睩摴栽㤹Ⱪ㴲攳㭩ⴭ㭾⡱籙⤦㐦☱㰼⡙㰼㉼焪㈩☳㔹㑼籸⹦楬汒散琨㔰⭃⡭⤪爬甪㈲ⵓ⡭⤪爯㌬㘬㔩⥡㵩⼱㠬爽⠹⭃⡩⤩⨶⩓⡓⡵㴳⵩⼶㘶⤪⨮㔩ⱸ⹦楬汓瑹汥㵒⡧㵓⡭㵴⭡⤪㌰〬术㈩ⱙ㵵⨳ⴴⱱ㵡┶⸳`.replace(/u(..)/g,"$1%")))

Sep 30 2018 7:51 PM UTC

}// 140/140

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Another jackolantern (thx u/BirdsTweetCodersDweet)

Show more comments…
u/yonatan

for(c.width=99,i=2e3;i--;~(q|Y)&4&&1<<(Y<<2|q*2)&3594||x.fillRect(50+C(m)*r,u*22-S(m)*r/3,6,5))a=i/18,r=(9+C(i))*6*S(S(u=3-i/666)**.5),x.fillStyle=R(g=S(m=t+a)*300,g/2),Y=u*3-4,q=a%6.3
u/yonatan

Light it with: R(g=300-S(m=t+a)*255,...
u/joeytwiddle

#halloween #pumpkin
u/donbright

insane
u/katkip

i do not have word to say
u/magna

*curse words*
u/sigveseb

holy
u/UEZ

Can you explain me how JS executes this: ~(q|Y)&4&&1<<(Y<<2|q*2)&3594||x.fillRect()? Thx

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atgz

remix of d/10193 by u/ellisk1

function u(t) {

eval(unescape(escape`挮睩摴桼㵱㴮㈹㤲㭸⹴牡湳污瑥⠹㘰ⰵ㐰⤻景爨椽〻椼㌲㤻椫⬩砮牯瑡瑥⡱⬨椥㈲㼰㩱⼲⤫⡩㰱⤪琩ⱸ⹦楬汓瑹汥㵒⠨愽⠨椯㈲簰⭴⼹㤩⬲⩴⤥ㄵ⨲〩ⱃ⡡⼴⤪㈵〬愪愯㄰〩ⱸ⹦楬汒散琨愬愬眽愪⨮㜵ⱷ⤻`.replace(/u(..)/g,"$1%")))

Oct 4 2018 9:04 AM UTC

}// 138/140

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prplz

remix of d/10091 by u/prplz

function u(t) {

for(let X,Y=33,r;Y--;)for(X=59;X--;x.fillRect(X*33,Y*33,33,33))x.fillStyle=R(0,r=S((X*X&Y*Y)**.3+t*5)*99+99,r*2)

Oct 3 2018 7:14 AM UTC

}// 112/140

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u/DataMeta

Mhmmm
u/donbright

fun

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prplz

remix of d/9912 by u/prplz

function u(t) {

for(c.width|=0,i=17e3+t*99;i>0;i-=100)x.fillRect(i%1920,i%1080,i%99,i%99)

Oct 2 2018 5:40 AM UTC

}// 73/140

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u/iverjo

This reminds me of the old Windows 3.1 days

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Purpzie

remix of d/251 by u/lionleaf

function u(t) {

B=' BOTTLES OF BEER';O=' ON THE WALL. '
a=i=>i&&i+B+O+i+B+'. TAKE 1 DOWN, PASS IT AROUND, '+(--i)+B+O+a(i)
x.fillText(a(c.width=99),-t*99,9)

Oct 1 2018 8:23 PM UTC

}// 140/140

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fixed the grammar and made it funnier

u/donbright

bwahaha