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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kian

remix of d/21939 by u/New_Core

function u(t) {

with(x)for(i=255,drawImage(c,-5,0,1930,1085);i--;clearRect(X,Y,9,-5))fillStyle=`hsl(${i*6},99%,60%)`,fillRect(X=i*6,Y=400+100*T(t+i/40),5,1)

Mar 13 2021 2:55 PM UTC

}// 140/140

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rainbow stairs

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danny@hille.dk

remix of d/21935 by u/KilledByAPixel

function u(t) {

for(i=2e3,c.width=w=60;i--;)x.fillRect(X=i%w,Y=i/w|0,T(Y&X+t*w*Y/9)/9,4)

Mar 13 2021 1:51 PM UTC

}// 72/140

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suburban remix :-)

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kian

remix of d/5841 by u/sandromiccoli

function u(t) {

c.width=2e3;x.fillRect(0,0,2e4,2e5);for(i=8e3;i--;){x.fillStyle=`#db0`;x.fillRect(990+S(i*1)*C(t/i*6)*850,580+S(i*2)*~T(t+i)*490,4,5)}

Mar 13 2021 8:36 PM UTC

}// 134/140

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hour glass

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Ulla62

remix of d/21914 by u/and3k5

function u(t) {

i=(t*500)%45
x.fillStyle=R(i/9,i/2,i*4)
x.fillRect(1912,532+C(t)*532,9,9)
d=c.height/c.width
x.drawImage(c,-12*d,-4,c.width+8*d,c.height+8)

Mar 14 2021 10:36 AM UTC

}// 139/140

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u/kian

Uh, another possible Emil! Also, sweet
u/Ulla62

Hehe thx Kian, skulle bare lige lege lidt og lærer principperne, ser ud til du har fået godt styr på det :-D

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Xen

remix of d/21915 by u/kian

function u(t) {

for(i=4e3;i--;x.fillRect(1e3+C(p=t/7+i)*S(t)*s*t,540+S(p)*S(t)*s*t,7,7))x.fillStyle=R(s=t%7*i,i,t*s%i,.1)

Mar 12 2021 2:50 PM UTC

}// 105/140

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quick play

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kian

remix of d/21929 by u/kian

function u(t) {

i=(t*100)%950
d=S(i)
x.fillStyle=R(i/C(i),i/S(t),i/C(t),S(i)/6)
x.fillRect(100*S(t),5*i-d*356,1,1)
x.drawImage(c,d,d,2e3+8*d,c.height+8)

Mar 13 2021 2:42 PM UTC

}// 136/140

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stacked plates

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kian

function u(t) {

w=c.width=960
for(i=0;i<8;){s=S(t/i);h=90
x.fillStyle = R((s*i)%h,t%h,(t*i)%h,.35*s)
x.arc((w/i+++s)/2+h*2,(w/10+i*s*37)+h,10,0,6)
x.fill()}

Mar 13 2021 1:12 PM UTC

}// 140/140

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circles peacefully combobulating triangles

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ntsutae

function u(t) {

t?c.width|=d=0:Y=0
T=S(t/12)/2e5;X=800;Y=X-Y/2
for(i=3e3;i--;x.lineTo(X+=S(d)*18,Y+=S(d*d)*12))d+=S(i/31|8)+T+1
x.lineWidth=4;x.stroke()

Mar 11 2021 5:37 PM UTC

}// 136/140

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Machine

u/etury

You're my favorite artist on this site keep it up
u/ntsutae

Thank you!

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danny@hille.dk

remix of d/21918 by u/Xen

function u(t) {

for(i=4e3;i--;x.fillRect(1e3+C(p=S(t)/7+i)*S(t)*s+t,540+S(p)*C(t)*s+t,7,i))x.fillStyle=`hsl(${s=t%7*i},99%,55%,.1`

Mar 13 2021 8:32 PM UTC

}// 114/140

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strange remix

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veubeke

remix of d/21883 by u/BackendForth

function u(t) {

onmousemove=e=>{for(R=c.offsetWidth/(i=c.width^=0);i-=64;)for(j=1080;j-=54;x.fillRect(i-p/r,j-q/r,9,9))r=Math.hypot(p=e.x/R-i,q=e.y/R-j)/99}

Mar 11 2021 8:29 PM UTC

}// 140/140

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Mouseover, please! (fullscreen fix)

u/Xen

nicely done
u/BackendForth

Cool!