Top dweets by u/Tekmap

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.

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Tekmap

remix of d/24776 by u/KilledByAPixel

function u(t) {

c.width=w=240
t%1<.01?d=Date.now():C=C=>!!u[i+C]
for(i=4e4;i--;x.fillRect(i%-w,i/w|0,1,!a))a=u[i]=d&2**(8*C(-w)+4*C(w)+2*C(-1)+C(1))

Apr 14 2026 7:09 PM UTC

}// 132/140

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Wkdjcbwiducwnrfhgweicubwejcywgex

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Tekmap

function u(t) {

c.width=784;for(i=32;i--;x.fillStyle="#1da")for(j=27;j--;c.style.background="#000")x.fillRect(96+i*20,29+j*6,16+S(t*3-i/2)*5,t/i)

Apr 14 2026 5:32 PM UTC

}// 129/140

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ShockWave

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Tekmap

function u(t) {

with(x)for(fillRect(0,0,w=2e3,i=w);i--;strokeRect(i+S(t),540-i,j=i*2,j*S(i/80)))setLineDash([i]),strokeStyle=R(p=w+i-S(i/99-t)*i,p)

Apr 14 2026 5:20 PM UTC

}// 131/140

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Cdj38edj36esi82j

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Tekmap

remix of d/11587 by u/katkip

function u(t) {

c.width^=0;f=(X,Y,d)=>{if(d>9)x.arc(X,Y,d,0,7),f(X+d*T(d++-t),Y,d/2),f(X,Y-d*T(d+t),d/2),x.stroke()}
f(960,540,300)

Oct 13 2021 8:16 PM UTC

}// 115/140

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Tekmap

remix of d/22955 by u/initramfs

function u(t) {

a=2e3;c.width=a;x.fillRect(1,1,a,a)
for(i=6;i<a;i++){x.rotate(i/t/i);x.fillStyle=`hsl(${i*t/.1},99%,50%)`
x.fillRect(i*T(t),i*S(t)*.1,99,t)}

Jun 17 2021 12:51 PM UTC

}// 140/140

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Pulstil in crescendo

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Tekmap

remix of d/10839 by u/anotherkitten

function u(t) {

t||x.translate(960,540)
with(x)fillStyle=`hsl(${t*7e2} 70% 50%`,fillRect(0,0,T(t)*500,S(t)*500),rotate(t/1e2),drawImage(c,-960,-540)

Jun 16 2021 1:56 PM UTC

}// 132/140

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Centrifugæ

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Tekmap

remix of d/15112 by u/f8f82804

function u(t) {

t||(j=a=b=.3)
for(i=99;i--;){
j+=2*Math.random()+1
a-=(a-(j&1))/2
b-=(2*b-(j&2))/4
x.fillRect(480+960*a,960*b,1,1)
}

Jun 12 2021 5:34 PM UTC

}// 116/140

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#Fractal #Squares

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Tekmap

remix of d/21819 by u/BackendForth

function u(t) {

c.width=1920
for(k=9;k--;)
for(i=10;i--;)for(j=75;j--;)x.fillRect(720+i*5+120/(1+2**(-72*T(t+k/9*t)+j))+k*100,540+j*8,5,8)

Jun 8 2021 3:14 PM UTC

}// 122/140

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Tekmap

remix of d/9074 by u/mangoose

function u(t) {

c.width|=0
x.lineWidth=12
for(i=0;i<(p=Math.PI)*5;i+=(1/(9*p)))
x.lineTo(960+(T(t+i*.8)+T(i*4.5+t*.6))*250,1720+1480*C(t/2+i*.9))
x.stroke()

Jun 8 2021 3:08 PM UTC

}// 140/140

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Tekmap

remix of d/23010 by u/Tekmap

function u(t) {

c.style.filter=`blur(1vw)contrast(90`
for(c.width|=z=i=19;i--;)for(j=2*z;j--;)x.fillRect(99+i*99+.2*C(t-j/4*z)*300,200+j*z,50,z)

Jun 5 2021 12:56 PM UTC

}// 128/140

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water flow

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