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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Current theme challenge: #Food

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Axioplase

remix of d/35169 by u/Axioplase

function u(t) {

u.X||=1e3,u.Y||=500;f=()=>Math.random()<.5?-9:9;x.globalAlpha=.2;x.beginPath();x.moveTo(u.X,u.Y),x.lineTo(u.X+=f(),u.Y+=f());x.stroke()

Apr 2 2026 6:00 PM UTC

}// 135/140

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Random walk.

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Agnes

remix of d/7686 by u/Agnes

function u(t) {

with(x)for(c.width|=i=15;i-->1;)for(j=15;j--;beginPath(),arc(960,540,150+25*i,o=i*t-3/j,6.3/j+o),lineWidth=j+5,strokeStyle=R(17*j))stroke()

Apr 16 2018 11:10 AM UTC

}// 139/140

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I should probably stop remixing this one, but I keep finding dumb small changes that make it look better.

u/Agnes

#beesandbombs

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ellisk1

function u(t) {

with(x)beginPath(q=(t+2)|0),fillStyle=R(a=33+q*3+q%2*89,a*.7-40),arc(960,540,z=q*20+S(j=t*9)*(10+q/3)+S(t)*9,j,j+50/z**.67),fill()

Sep 28 2018 2:26 AM UTC

}// 130/140

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Tree growth rings

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magna

remix of d/2757 by u/magna

function u(t) {

x.globalCompositeOperation='xor';s=2**.5;H=500;r=Math.random;d=r()*H;w=H-d;x.beginPath();x.arc(C(a=r()*7)*d+H*2,S(a)*d+H,w,0,7);x.fill()

May 22 2017 12:39 AM UTC

}// 136/140

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fons

remix of d/6946 by u/fons

function u(t) {

for(a=10,w=960,h=540,c.width|=0;a>0;a-=.02){
	x.moveTo(w+h*C(a),h+h*S(a));
	x.lineTo(2*h+4*h*C(a*t/4),2*w*S(a*t/4))
}x.stroke();

Feb 17 2018 5:02 PM UTC

}// 128/140

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dee-gomma

remix of d/36312 by u/Axioplase

function u(t) {

for(t?T=1e3:r=1;T--;x.fillRect(r>>8<<2,(r&255)*4,4,4))r=r/2^(r&1&&73728)

Sep 23 2026 8:21 PM UTC

}// 72/140

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Wolfenstein fizzle - golfed

u/Axioplase

!!!

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bepisTM

function u(t) {

for(c.width|=i=128;i--;x.fillRect(960+99*C(a=T(t*3+i/256)),540+99*S(a),15,15))x.fillStyle='#2222'

Jan 28 2018 1:51 PM UTC

}// 97/140

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u/zanella

Guys, wait until the loading ends, it's totally rad!

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rodrigo.siqueira

remix of d/33437 by u/taupelink

function u(t) {

for(i=z=9e3;i--;x.fillRect(120*t,i/8,(z/=2*(z+i/4e3*S(z/34+t/2)))*4,2))x.fillStyle=(z*=500*S(9/z+z)/z/z)&9?z&1?'#fb32':'#0006':'#a303'

Mar 5 2025 1:37 PM UTC

}// 134/140

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u/cantelope

great colors

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Leodude123

remix of d/20184 by u/Leodude123

function u(t) {

c.width=1920
for(i=2;i<18;i++)
x.fillRect(100+i*S(t)*S(t)*50,500,10,30)
x.fillRect(120+i*S(t)*S(t)*50,500,10,30)

Oct 5 2020 12:56 PM UTC

}// 112/140

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remix!yeetz

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luta

function u(t) {

t?0:A=[];m=Math;r=m.random
X=92+20*m.sqrt(m.log(1/(r()**2)))*C(m.PI*r())|0
a=A[X]=1+A[X]||0
t>80||x.fillRect(10*X,1080-9*a,9,9)

Aug 1 2026 10:45 AM UTC

}// 127/140

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Normally distributed #random numbers

u/cantelope

#underrated