Random dweets | Dwitter

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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directmusic

function u(t) {

x.globalCompositeOperation="lighter"
if(t<6.27){x.beginPath()
x.arc(T(t/2)*99+960,S(t)*300+540,200,0,9)
x.fillStyle=R(0,0,0,0.005)
x.fill()}

Jul 14 2020 3:32 AM UTC

}// 140/140

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ciaccodavide

function u(t) {

for(c.width=w=64,i=0;i<w*w;i++)x.fillRect(i%w,i/w*(1+S(t)/4),1,1,x.fillStyle=`hsl(${t*i*99},50%,50%`)

Oct 22 2021 10:13 AM UTC

}// 101/140

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screen

u/andrea270872

I have to resist the urge to hit the side of my screen! :D Nice effect
u/Xen

oooo nice

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Xen

remix of d/13694 by u/vinca

function u(t) {

for(t||(Y=0),X=2e3;X--;x.fillRect(X,0,1,5))x.fillStyle=R(r=255*S(t/C(X/69)+t/C(Y/19)+t/9),r*S(t),r*C(t));x.drawImage(c,0,5+C(t)*3),Y++

May 9 2019 7:37 PM UTC

}// 134/140

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slight remix

u/vinca

Irregular scrolling is funny :)
u/Xen

#scroll

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KilledByAPixel

remix of d/23535 by u/KilledByAPixel

function u(t) {

for(i=4*(c.width=450);i--;x[(t+j+i/350)&1|j>7?'moveTo':'lineTo'](225-C(t/2)*99+(64-i/14)*S(a=j*.4),99+86*C(t)**2+64*C(a)))j=i%9
x.stroke()

Aug 11 2021 2:41 AM UTC

}// 138/140

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Amiga Ball #uncompressed #amiga

u/KilledByAPixel

fixed bounce for(i=4*(c.width=450);i--;x[(t+j+i/350)&1|j>7?'moveTo':'lineTo'](225-C(t/2)*99+(64-i/14)*S(a=j*.4),179-86*S(t%3.2)+64*C(a)))j=i%9;x.stroke()
u/vain

AMIGA !!!!! :D

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New_Core

function u(t) {

with(x)for(i=80;i--;fill())beginPath(),arc(960+i*5*S(i+t),600,i*20,a=2.6+.2*S(i/9+t),a+4.2),fillStyle=R(0,i*5,i*6)

May 2 2020 3:27 PM UTC

}// 114/140

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water #cavern

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katkip

function u(t) {

c.width=80;p=0;for(i=0;i<80;i++)for(j=0;j<80;j++)x.fillStyle=`hsl(${S(p)>C(i**2+j+t)-C(j**2+i+t)?t:400-t},99%,50%)`,x.fillRect(i,j,1,1),p++;

Aug 30 2018 9:29 AM UTC

}// 140/140

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Evolving cells and bacteria

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jonathan_b

remix of d/4136 by u/Exca

function u(t) {

for(i=0;i<1100;i++)d=C(t+i),s=i==0?2920:9-d,x.fillStyle=R(i/3,i/d,i/.1,0.2),x.fillRect(C(t*2.5+i)*220*S(C(t)+i%50)*2+960*(i?1:-1),i,s*2,s*2)

Dec 28 2017 6:58 PM UTC

}// 140/140

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jonathan-potter

function u(t) {

c.width|=f=i=1920
for(;i--;) {
  v=i*i*i/f
  X=v%f
  Y=v*i%f
  Z=v*v
  p=new Path2D
  p.arc(X,Y,20*Math.abs(S(Y+t)),0,7)
  x.fill(p)
}

Dec 5 2018 12:19 AM UTC

}// 134/140

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bubbles

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rodrigo.siqueira

remix of d/33062 by u/rodrigo.siqueira

function u(t) {

for(i=2e4;i--;x.fillRect(152*X-25,110*Y+540,f&t<7,.5))X=i*i/t%15,Y=5*S(i+t),f=(3+S(Y+C((Y+4+S(X-9))**2/9)))/(5/(X/3-8*C(X*2)/9-7))*8

Jan 14 2025 4:17 PM UTC

}// 132/140

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Concentric distorted lines

u/cantelope

great series!

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metamero

function u(t) {

onmousemove=e=>x.lineTo(e.x,e.y),x.stroke()
onmouseup=e=>c.width=innerWidth

Dec 6 2018 3:08 PM UTC

}// 75/140

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minimalist marker #interactive #paint

u/Xen

Nice work! click to start