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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rodrigo.siqueira

remix of d/17404 by u/Xen

function u(t) {

for(i=1e3;i--;x.fillStyle=R(Y*Z,Y,X,.05))t<1.6&&x.fillRect(X=C(z=S(t*i**8)*7+4)*i**1.5,Y=300+S(z/2)*i*t,Z=i*S(t),Z)

Jan 30 2020 2:51 AM UTC

}// 115/140

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Abstract #colors #art

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iznax

function u(t) {

for(c.width=z=q=1e3,x.fillRect(0,0,z,z);--q;r=q%16,x.fillStyle=R(r*9,0,128,.1),x.fillRect(99+r*48,300+.8*S(3*t+r*(40+t/4))*h,h,16))h=q/11//?

Jan 30 2020 6:26 AM UTC

}// 140/140

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Purple Spinal Code

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iznax

function u(t) {

for(x.font='7em John_3_16',w=894,q=t/9,j=3;--j;)for(i=7;i;x.fillText(--i?"📀":"(dvds)",i?w+C(i*q+p)*w:840,i?600+S(i*3+p)*w*.5:600))p=t*3+j*.1

Jan 31 2020 5:12 AM UTC

}// 140/140

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To DVD Or Knot To Be

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Odog8

function u(t) {

eval(localStorage.Y)//㐄㮆㻷待䬰䔢徶往䔤待䬬鸍䲹岓䡗ꑴ떨䇝䳋韍뮽愍뮯㻢䈂䎔䈄䀺䇈䲿义䇔䬯㻢䈂䎔䈄䁋뮮鿉꤬肅鬤㻷䔷䓹䓹䁋鷻徱㻢䁋龋徱㻤䁋饋徵岔䍭龛뮮鿉꤬肅鬤㻢䎧䔤䎧䓹䓹䁋

Feb 1 2020 5:16 PM UTC

}// 95/140

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Planets! If this doesn't work view d/16213

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Cloud

function u(t) {

for(c.width|=i=0;i<8;i++){
r=50
a=t*2*i+i%2
b=(i%2)
x.lineWidth=8
x.arc(960+S(a)*r*b, 500+C(a)*r*b, 400-i*r, 0,7)
x.stroke()
x.beginPath()
}

Feb 1 2020 5:05 PM UTC

}// 140/140

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corruptio

function u(t) {

t?x.fillRect(j%50*36,(j/50|0)*36,(v="򐉡󰘣󠱂򐐢󘑂򈑂󘑢򀑢󈒂񸒂󈒂񸒂󈒂񰒃󈒂񰑣󐒂񰑣󐓣𡱃󠑢񉁄󨙣󰘣󨩣󠚣󐛣󈗇𡊡𙆄𙀡򀒢𠰢𨑦𘑂𘑁񠰣𹂁𱂡򑐤𨗁𨑁񨑤𡈃𠳋󱸡󩆥􁁁𱏊򀖅򘠁".charCodeAt(i/2)>>i++%2*5&31)*36,i%2*36,j+=v):i=j=0

Jan 28 2020 3:01 AM UTC

}// 140/140

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50 x 28 Totoro #PixelArt

Show more comments…
u/corruptio

Uses run-length encoding to get more pixels.
u/Xen

very nice!!
u/corruptio

hmm, can save 4 chars in decoder to make it a 50x30 image
u/corruptio

t?x.fillRect(j%50*32,j/50<<5,(v="𝀳𯁱𦠢𤀡𦐢𣰢𦐣𣠣𥰤𣐤𥰤𣐤𥰤𣐤𥰤𫀤𥰤𫀣𦀤𫀣𮀣񈱢𘡚𰲇𘡻𜱼𤑻𜱺𝑸𝱗𰒎𘢕𰒌𘐡𣡥𠠡񀰣𠐢𘑢𪢁𙒄𙂥𴀡𘰮𘰢𲲃𨡰񨣦🂑𾲍🢂񡀾𻡌𜓬🰀".charCodeAt(i/2)>>i%2*5&31)*32,i++%2*32,j+=v):i=j=0
u/katkip

Awesome!
u/aleamb

fucking amazing!
u/tomxor

Do Ponyo! :)
u/KilledByAPixel

☂

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KilledByAPixel

function u(t) {

for(c.width=k=800;k--;x.fillText('⬤',X-(q=3+S(Math.hypot(393-X,227-Y)/99-t)**3*49)*S(t*6),Y+q*C(t*6)))j=k%23,X=k*1.1+j%2*13-49,Y=j*26-49

Jan 27 2020 11:45 PM UTC

}// 136/140

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🐝💣 https://twitter.com/beesandbombs/status/1205…

u/katkip

#illusion #Beesandbombs

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Cloud

function u(t) {

c.width|=0
for(i=0;i<80;i++){
z=S(i/12-t*3)*100
x.fillRect(960-(150+i*12)-z, i*10+400+C(t*14)*i, 300-z/3+i*24, 20)
}

Jan 31 2020 9:42 AM UTC

}// 116/140

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Old town road :) #mobile

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Cloud

function u(t) {

x.lineWidth=10
t*1920*2<1920?x.lineTo(t*1920*2, S(t*(Math.random()*10))*160+500):0
x.stroke()

Feb 1 2020 8:27 AM UTC

}// 93/140

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Job #growth

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yodacoder

remix of d/6467 by u/41407

function u(t) {

t*=9
w=c.width|=0
x.fillRect(0,0,w,w)
x.strokeStyle=R(w,5*C(t),w*S(t))
for(i=w/1;i--;)x.lineTo(w/2+C(t*i/5)*5*i,w/4+S(t*i/5)*5*i)
x.stroke()

Jan 31 2020 8:22 AM UTC

}// 140/140

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👈