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/11304 by u/katkip

function u(t) {

t||x.translate(960,540);x.rotate(Math.PI*9/6);x.fillRect(0,500,50,200),x.fillStyle=R(0,128+T(t),128+S(t*9)*128);x.drawImage(c,0,0,2e3,1e3)

Dec 5 2018 2:57 PM UTC

}// 138/140

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beautiful

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katkip

function u(t) {

t||x.translate(960,540);x.rotate(Math.PI/2.001);x.fillRect(0,420,50,200),x.fillStyle=R(128+T(t),0,128+S(t*9)*128);x.drawImage(c,0,0,2e3,1e3)

Dec 5 2018 2:55 PM UTC

}// 140/140

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#fractal

u/metamero

beautiful!

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magna

remix of d/11282 by u/jonathan-potter

function u(t) {

r=Math.random;for(u[h=16]=r(i=9e3)*i;i--;x.fillRect(i/2,i%32*h,h,h))x.fillStyle=R(n=u[i]=r(q=i+r()-.3|0)*(u[q]+u[q-32]+u[q-31])/1.5|0,n,255)

Dec 4 2018 1:26 PM UTC

}// 140/140

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Water vapour / clouds in time lapse

u/magna

#lazyremix

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veubeke

function u(t) {

c.width^=0
x.font='50em"'
x.fillText('🎅',520,900)























t||speechSynthesis.speak(new SpeechSynthesisUtterance('ho,ho,ho'))

Dec 4 2018 5:57 PM UTC

}// 139/140

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Almost #xmas

u/veubeke

PS: the dweet doesn’t work in Chrome 71 – autoplaying speech has been deprecated and drawing big emojis is broken
u/veubeke

I reported the bug and they fixed it only partially so this remains broken. See https://bugs.chromium.org/p/chromium/issues/…

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ellisk1

function u(t) {

if(!t)with(x)globalCompositeOperation='xor',font='7cm n',fillRect(0,0,2e3,600),fill(arc(355,300,160,0,7)),fillText('+   New dweet',280,390)

Dec 5 2018 3:47 AM UTC

}// 139/140

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#meta

u/ellisk1

fillStyle='#6495CF'
u/katkip

I am the only one who clicked it?

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marc8

function u(t) {

eval(unescape(escape`挮睩摴桼㵪㴱〻欽㘮㈸㭺㴹㤹㭲㵺⨲⨪⠲⸸⭴┲⸸⤻景爨㭪ⴭ㬩筸⹢敧楮偡瑨⠩㭦潲⡩㴰㭩㰲㭩⬽⸴⥸⹬楮敔漨稫爪匨焽椪欭琩ⱺ⼲⭲⩃⡱⤩㭸⹦楬氨❥癥湯摤✩㭲⨽⴮㌸紻`.replace(/u(..)/g,"$1%")))

Dec 3 2018 10:01 PM UTC

}// 124/140

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c.width|=j=10;k=6.28;z=999;r=z*2**(2.8+t%2.8);for(;j--;){x.beginPath();for(i=0;i<2;i+=.4)x.lineTo(z+r*S(q=i*k-t),z/2+r*C(q));x.fill('evenodd');r*=-.38}

u/donbright

awesome precision

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katkip

function u(t) {

for(i=65;i--;)x.fillStyle=S(t*100+i*99)<C(t+i*10)?"#fff":R(),x.fillRect(0,0,30*i,30);x.drawImage(c,0,30)

Dec 6 2018 1:54 PM UTC

}// 104/140

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Tried to make a #maze

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jylikangas

remix of d/11226 by u/jylikangas

function u(t) {

for(x.fillRect(0,0,w=c.width=i=400,w);i--;x[f='clearRect'](200+(i%8-4)*z,74+z,j%3?1:z,!x[f](k=j*9,90,9,-k*k%37)))j=i>>3,z=w/(j-t%1*6-20)

Dec 2 2018 8:52 AM UTC

}// 136/140

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Teh Grid

u/katkip

a w e s o m m m m e
u/iverjo

#city #skyline

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ellisk1

remix of d/7846 by u/joeytwiddle

function u(t) {

for(i=9;i--;x.clearRect(500-100*S(3*t),400,50,200))x.setTransform(1,0,C(3*t+.1)/2,1,100*i,0);x.fillRect(x.globalAlpha=.1,400,2e3,200)

Dec 4 2018 3:33 AM UTC

}// 133/140

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Swinging #default

u/katkip

NFS
u/iverjo

#motionblur

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geb

remix of d/11285 by u/pavel

function u(t) {

with(x)for(c.width|=j=9;j--;fillStyle=j%2?'red':'green',fill('evenodd'))for(beginPath(i=6);i--;arc(960,540,2.6**p,a=(6*i+p)*-t/42,a))p=j+t%2

Dec 4 2018 7:32 PM UTC

}// 140/140

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