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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BriSeven

remix of d/17788 by u/BriSeven

function u(t) {

for(i=r=X=9e2,Y=5e2,W=(H=1e3)*4;i;i--)x.fillStyle=`hsla(${i/20+10},${i/20+20}%,50%,0.1)`,x.fillRect(X+=3*S(r+=C(Y*t*r)),Y+=3*C(r),5,5)

Feb 28 2020 3:42 AM UTC

}// 134/140

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Sharehouse shower drain

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katkip

function u(t) {

f=(x,y)=>S(C(t)*S(x/3-y/5-t)-x/5-t);c.width|=0;x.globalAlpha=.4;for(i=29;i--;)for(q=j=29;j--;)x.fillRect(460+i*q+j*9,j*17+300-f(i,j)*q,q,q)

Feb 25 2020 4:14 PM UTC

}// 139/140

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i'm keeping up with the new trend so here's another 3d graphic

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rodrigo.siqueira

remix of d/17694 by u/rodrigo.siqueira

function u(t) {

for(A=a=b=0,i=1e4*(t<5);i--;)a+=2*(S(t*i**7)<0)-a/2+b*S(a),b+=C(A)/2+.3-S(b/3),A=a,x.fillRect(a*422,b*630+260,.4,1)

Feb 27 2020 2:20 AM UTC

}// 115/140

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Curly plants #growth #plant

u/katkip

#fractal

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BriSeven

remix of d/17773 by u/veubeke

function u(t) {

c.width^=0
with(x)for(lineWidth=1,i=400;i--;stroke())beginPath(),setLineDash([3.14*i]),lineDashOffset=t*500*(1-i%2*2),arc(960,540,i*1,0,7)

Feb 28 2020 2:01 AM UTC

}// 138/140

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Amazing what a couple parameter changes can do with this one!

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BriSeven

remix of d/17745 by u/veubeke

function u(t) {

c.width^=0,x.scale(30,30);x.fill(new Path2D(`M24 8c-2-2.2-6-2-8.2.2l-.4.4-.4-.4C13 6 9 6 7 8c-2 2-2.1 5.9.2 8l8 8 8.4-8.4c2-2 2-6 .2-8z`))

Feb 26 2020 12:54 AM UTC

}// 138/140

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SVG Path Tester

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BriSeven

remix of d/17695 by u/pavel

function u(t) {

with(x){for(beginPath(t||scale(9,9)),fillText('STONKS',160,99),i=2;i--;lineTo(6*j,11+j*j+11*S(4*j)))j=~~t+i;rect(1,-1,222,111);stroke()}

Feb 28 2020 12:30 AM UTC

}// 136/140

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OH NO, I'M RUINED

u/pavel

Hah, yeah! This is more accurate right now.

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katkip

remix of d/6723 by u/21medals

function u(t) {

for(i=49;i--;x.fillRect(o=-i*9-99*t,o,s=99/t,s))x.resetTransform(),x.translate(a=960,540),x.rotate(i*7),x.fillStyle=R(C(i)*a,C(i)*a,S(i)*a)

Feb 27 2020 3:51 PM UTC

}// 139/140

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katkip

function u(t) {

P=(θ,R)=>x.fillRect(C(θ/30)*R+960,S(θ/30)*R+540,1,1)
t||(q=z=0)
for(i=2999;i--;)P(S(q)*100,C(z)*200+300),q+=C(z-1),z+=S(q*9-z)

Feb 25 2020 8:16 PM UTC

}// 126/140

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Chaotic flower #chaos

u/Xen

niice

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ElisionFR

function u(t) {

if(!t)R=[]
onmousemove=(e,d=t)=>R.push(l=>[e.x+C(d*50)*(l-d)*9,e.y+S(d*50)*(l-d)*9])
R.map(v=>x.fillRect(...v(t),1,1),c.width=innerWidth)

Feb 26 2020 12:24 AM UTC

}// 137/140

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Generate particles from pointer

u/aleamb

#interactive

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Xen

remix of d/17760 by u/Cloud

function u(t) {

for(i=455;i--;x.fillRect(i,S(z/i*t)*975,i*4,i))x.fillStyle=R(t%i,z=C(i*t)*i,z%i^i)

Feb 26 2020 10:29 PM UTC

}// 82/140

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#Matrix4 "do not focus upon false truths"

u/katkip

#xweet