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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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Michael21

remix of d/1231 by u/iverjo

function u(t) {

c.width^=0;for(i=9;i<2e3;i+=2)s=3/(9.1-(t+i/99)%9),x.beginPath(),j=i*7+S(i*4+t+S(t)),x.lineWidth=s*s,x.arc(960,5405,s*49,j,j+.6),x.stroke()

Feb 28 2017 9:38 PM UTC

}// 139/140

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁡👴𯀰𛁩🐵𜀻𪐭𛐻𩡩𫁬𚁡𬡣𚀱𩐳𚰱𩐳𚡃𚁱𚐫𬰬𝐴𜀫𝐳𜀪𤰨𬐪𬐩𚱳𛁴🱳𚠳𞠱𩐳𛀰𛀷𚐩𚑢𩑧𪑮𤁡𭁨𚁱👡🱡𞡩𚱴𚠹𞑼𜀩𛁦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𞐹𛑱𚠵𞑽𘀤𮰹𞐭𭀪𞑽𙐤𮱡🱴🀲🰹𞐭𪐪𜠺𪐺𭀿𞐹𞠰𯐥𚑠𛁳🐵𚡩𛰨𨐿𬐪𬐺𜰰𜀩`.replace(/u../g,'')))

Jan 10 2020 1:08 AM UTC

}// 138/140

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Space Scene Generator #space

u/sigveseb

pretty!
u/KilledByAPixel

#planet

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yodacoder

function u(t) {

with(x)for(c.width|=j=1e3,scale(5,3);j--;j%5?arc(109,52+j/5,j>40*t?99:36,a=t-j/.6396,a):beginPath(stroke()))setLineDash([j%90>59?0:1])

Jan 31 2020 8:13 AM UTC

}// 134/140

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ryuujin

function u(t) {

for(i=2e3;i--;)x.fillRect(960+S(i+t)*i/2,540+C(i-t)*i/2,S(i*9)**3*4,S(i*9)**3*4);x.fillStyle=`hsla(${t*50},99%,50%,.1)`

Sep 3 2024 10:43 AM UTC

}// 120/140

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u/thenize

RGB gamers go crazy!

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taupelink

remix of d/15380 by u/taupelink

function u(t) {

g=(a,b)=>b?g(b,a%b):a;f=()=>Math.random()*1e7|0;t||(m=n=0);n++;g(f(),f())-1||m++;x.fillRect(n%1920,1080*(1-m/n),1,1);throw m/n

Aug 11 2019 4:25 AM UTC

}// 126/140

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If you take two random integers of at most 7 digits each, what is the probability that they are relatively prime? This simulation suggests somewhere around 60%

u/taupelink

In the graph, the x-axis shows number of trials, modulo 1920 (i.e. with wraparound). The y-axis shows % of trials with GCD 1, with 0% at bottom and 100% at top.
u/taupelink

After a little Web searching: Under more general conditions, the precise answer appears to be 6/π^2, or about .608. See, e.g., https://www.cut-the-knot.org/m/Probability/T…
u/aleamb

#math

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danny@hille.dk

remix of d/23599 by u/danny@hille.dk

function u(t) {

c.width=w=92;for(i=6e3;i--;x.fillRect(m,i/w|0,o=((w/(Y*Y+X*X)**.5+t*w*5&w^w*a*2+w+t*w&w))/w,.7/o))a=Math.atan2(X=-.5+(m=i%w)/w,Y=-.4+i/7e3)

Sep 2 2021 3:45 PM UTC

}// 139/140

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uncompressed tunnel remix

u/tomxor

Interesting an-anisitropic event horizon in the middle :P
u/danny@hille.dk

:P I couldn't fit the code to darken by depth...
u/danny@hille.dk

heres another interesting rendition c.width=w=127;for(i=1e4;i--;x.fillRect(m,i/w|0,o=((w/(Y*Y+X*X)**.5+t*w&w^w*a+w-t/5*w&w))/w,.5/o))a=Math.atan2(X=-.5+(m=i%w)/w,Y=-i/-9e3)
u/danny@hille.dk

#tunnel

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nystrand

function u(t) {

for(O=c.width|=Z=A=27;A--;O=.9+C(t)/Z)x.fillStyle=R(x.scale(A?O:1,A?O>1?Z:1.03:-O),Z,4*A,.2),x.fillText(u,A<2?M=7-t*4:-66,A<2?A*Z-18-S(M):Z)

Apr 7 2017 8:41 PM UTC

}// 140/140

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u/magna

I was expecting this to happen one day...
u/magna

Wait. How the hell are you rendering the "ground"? I don't get it. Explanation please.
u/nystrand

It's the "(O" chars at the beginning of the code decreasingly scaled down from the large initial scale. I had to find a variable name that "looked good", - went with O which made coding confusing as it looks like a zero :)
u/magna

This is nuts!
u/joeytwiddle

#quine

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dee-gomma

function u(t) {

//𝄞
eval(unescape(escape`𬠽𞐪𚀫𚱴🀵🱴𚠵𞡴🀶🱴𚠳𝠭𜐵𝐺𭀼𞀿𜰴𜰭𝀷𚡴𞠭𜰳𚰴𚡓𚁱🐴𞀭𝠪𭀩𛰨𬀽𭀭𝰩𚐊𮀮𩡩𫁬𤡥𨱴𚀹𝠰𚱲𚡃𚁡👴🀵🱴𚠲𛠱𞀺𭀼𝠿𜐰𛠹𚱓𚀨𭀭𝐩𚠳𛠱𝀩𛰵𞡴🀸🰱𜀮𞐺𜐱𛠱𛑃𚁱𚐯𬀯𝐩𛀶𝠰𚱲𚡓𚁡𚐬𜐴𛀳𝐭𜠱𚡃𚀨𭀭𛐼𝰩𚡴𚠲𛠳𚐩`.replace(/u../g,'')))

Feb 11 2026 12:52 AM UTC

}// 140/140

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Hand drawing a treble clef

u/ximavus

goodness how
u/cantelope

very nice!

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jlidbeck

function u(t) {

r=180;s=360;a=11.75
for(i=1;i<120;++i){
t+=t
x.fillStyle='#002a'
x.fillRect(
960+2*r*C(t)+s*C(a*t),
540+r*S(t)+s*S(a*t),1,2)}

Aug 22 2019 4:12 AM UTC

}// 125/140

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46uuuu

function u(t) {

c.width+=0
x.font="40px w"
if(t>2.8)throw"🙂"
x.fillText("🙂",0,t*400)

Jun 17 2026 8:00 PM UTC

}// 68/140

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Going out of boundary