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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prawnwarp

function u(t) {

if(t==0){q=[[0,1070],[960,0],[1900,1080]];a=0;b=0}i=Math.floor(3*Math.random());v=q[i];a=(v[0]+a)*.5;b=(v[1]+b)*.5;x.fillRect(a,b,10,10);

May 2 2017 10:11 PM UTC

}// 137/140

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Based on this video: https://www.youtube.com/watch?v=kbKtFN71Lfs

u/donbright

coool
u/MrM@_S

https://www.dwitter.net/d/2670 byte shave remix
u/iverjo

#sierpinski

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hoplite

function u(t) {

t=C(t*9)*255
x.fillStyle=R(t+30,t,t+99,.1)
x.fillRect(C(t)*9+954,S(t)*9+534,9,9)
x.drawImage(c,-48,-27,2016+S(t),1134+C(t))

Jan 3 2018 12:18 PM UTC

}// 124/140

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u/Xen

nice, reminds me of Dr.Who
u/joeytwiddle

the theme tune was playing in my head as I read Xen's comment!

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veubeke

function u(t) {

V=t?[Math.random()*48|0,...V.slice(0,c.width=480)]:[]
for(i=48;i--;x.fillRect(i*10,260,9,-S*9))S=0,V.map(v=>S+=v==i),x.fillStyle=R(99+S*9)

Jun 19 2019 8:30 PM UTC

}// 138/140

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Random number distribution

u/username

seems flawed
u/veubeke

Because it’s showing the last 480 numbers. If you accumulate more data it eventually evens out.
u/joeytwiddle

#random numbers are more likely to coincide than fall evenly. Coincidences are almost guaranteed! https://en.wikipedia.org/wiki/Birthday_probl…

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chatmasta

function u(t) {

c.width^=0;Z=(o)=>{for(i=0;i<100;i++)for(z=i+S(t),s=S(t),j=s*z;j<s*i+100;j+=o+C(t))x.fillRect(100*z+s*T(t),j*z*T(t),i%j+i,j%i);};Z(1);Z(9);

Oct 13 2018 5:09 PM UTC

}// 140/140

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remix of d/5347 by u/rg

function u(t) {

c.width|=0;d=new Date(1986,10,9),n=new Date(),f=31536e10,P=Math.PI/2;x.arc(960,540,5e2,-P,4*P*(n-d)/f-P,1);x.lineTo(960,540);x.fill()//10k

Sep 25 2021 9:13 PM UTC

}// 138/140

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10,000 year clock, starting on my birthday... #time

u/e4494s

im literally so hyped guys i cant wait

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LimeLaser

function u(t) {

r=Math.random
x.globalAlpha=.01
if(t<23){x.beginPath()
for(i=99;i--;){a=6.3*r()
p=500*r()**.1
x.lineTo(960+p*C(a),540+p*S(a))
}x.stroke()}

Aug 1 2019 3:10 AM UTC

}// 138/140

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Rendering Of A Cannonball

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taupelink

remix of d/27112 by u/taupelink

function u(t) {

eval(unescape(escape`爽䵡瑨⹲慮摯活景爨椽ㅥ㐻椭ⴻ砮晩汬剥捴⠴〪堬㐰⨫⭙ⱦ┱Ⱑ⡦☵㘩⤩堽爨夽爨⤪㈵⤪㐶ⱦ㴨⠶⭙⤥⠫⭘┳簴⤭㈩⨪㈫⡘┹┨夥㙼㐩ⴲ⤪⨲ⱸ⹦楬汓瑹汥㵠桳氨⑻㐵ⵦ紬⑻㘰ⵦ┱㕽┬⑻㔰⬱㔪䌨昩紥⥠`.replace(/u([^D].)/g,'$1%')))

Feb 25 2023 12:17 AM UTC

}// 140/140

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d/27119

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katkip

function u(t) {

x.font='9cm"';x.fillStyle=`hsl(${t*99},99%,50%)`;x.fillText("2019 likes",250+S(t*t)*25,590+C(t*t)*25)

Feb 5 2019 6:45 PM UTC

}// 101/140

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ClayCowgill

function u(t) {

for(j=0;j<900;j++)x.globalAlpha=.3,
i=S(t)*4,s=S(t+j),o=C(t-j),x.fillStyle=`hsl(${j-t},100%,50%)`,x.fillRect(950+j*s,500+j*i*o/3,10,10)

Mar 2 2017 7:14 AM UTC

}// 135/140

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u/Purpzie

Shortened by 18 characters: for(x.globalAlpha=.3,j=900;j--;)x.fillStyle=hsl(${j-t} 99%50%),x.fillRect(960+j*S(t+j),540+j*(S(t)*4)*C(t-j)/3,9,9)
u/Purpzie

Wait, 2 more characters can be shaved off so now it's 20 characters less than yours: for(x.globalAlpha=.3,j=900;j--;)x.fillStyle=hsl(${j-t} 99%50%),x.fillRect(960+j*S(t+j),540+j*S(t)*4*C(t-j)/3,9,9)

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pavel

remix of d/13487 by u/KilledByAPixel

function u(t) {

for(i=t?c.width|=d=_=>u[j=q&-64|p>>6]=-!u[j]|1:(p=q=540,r=7,s=4);i--;)u[i]||x.fillRect(i?i%64*64:p+=r*=d(p+=r),i?i:q+=s*=d(q+=s),z=i?64:9,z)

Apr 27 2019 4:26 AM UTC

}// 140/140

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#breakout #tribute

Show more comments…
u/pavel

Had to make some visual sacrifices to get this #uncompressed
u/pavel

I discovered p+=r*=d(p+=r);q+=s*=d(q+=s) as part of messing around with this. Why does it work?
u/pavel

:)
u/KilledByAPixel

Oh wow, nice! That's the code that updates the position, velocity and applies collision for x and y. It needs to call the d function to check its colliding and also set the block to 1 if it does. It needs to check x and y separately so it knows which side to bounce off
u/pavel

Notice how d only takes one argument, and it ignores it.
u/KilledByAPixel

I see what you did there. So many great tricks in this one.
u/pavel

p+=r*=d(p+=r) the inner p+=r increments p and d ends runs with that value, however the outer p+= caches the old value of p so when d resolves the inner p+=r is silently ignored!
u/pavel

#physics