Top dweets by u/BuRRak

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: #ScaryMovies

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BuRRak

remix of d/10501 by u/BuRRak

function u(t) {

c.width|=0;for(x.font="5cm a",i=0,x.fillText("🐄",T-120,T%1500);i<32;i+=.02)x.fillRect((T=(960+C(t)*750))+(232-i*5)*C(i+t*48),i*30,20,20)

Oct 16 2018 4:28 PM UTC

}// 136/140

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Cow in a tornado

u/f8f82804

#emoji

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BuRRak

function u(t) {

for(i=1080,v=212;i--;x.fillStyle=R(T(i/v+t*60/12)*v,T(i/v+t*60/18)*v,T(i/v+t*60/24)*v))x.fillRect(0,i,1920,1);

Apr 20 2018 3:55 PM UTC

}// 110/140

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BuRRak

remix of d/7606 by u/BuRRak

function u(t) {

x.globalCompositeOperation="xor";m=m.map(e=>e+(r=Math.random()>0.5?12:-12));x.fillRect(m[0],m[1],10,10)}{m=[960,540]

Apr 7 2018 9:37 PM UTC

}// 116/140

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Unused r, i was blind when i made this

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BuRRak

function u(t) {

onkeydown=u=>c[(e=u.key.toLowerCase())]=(c[e]|0)+(u.shiftKey?-1:1);c.style.background=R(c.r,c.g,c.b);throw c.r+';'+c.g+';'+c.b;

Feb 20 2018 5:40 PM UTC

}// 127/140

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Color Preview - use R, G, B to increase the RGB values and shift + R,G,B to decrease them

u/akm

golfed it down to 99 chars: with(c){onkeydown=u=>[e=u.code[3]]=e+u.shiftKey?-1:1,style.background=R(r,g,b);throw r+';'+g+';'+b}
u/BuRRak

Oh wow, you won't stop amazing me! :)
u/joeytwiddle

Useful! :)
u/BirdsTweetCodersDweet

onkeydown=u=>c[(e=u.key.toLowerCase())]=(c[e]|0)+(u.shiftKey?-1:1);c.style.background=R(a=c.r%255,b=c.g%255,d=c.b%255);throw a+';'+b+';'+d; fixed your throws ;)
u/BirdsTweetCodersDweet

Or. with akm's modifications: with(c){onkeydown=u=>[e=u.code[3]]=e+u.shiftKey?-1:1,style.background=R(a=r%255,d=g%255,e=b%255);throw a+';'+d+';'+e}

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BuRRak

function u(t) {

for(i=c.width=99;i--;)for(j=56;j--;)x.fillRect(i,j,S(i*j+frame/32)*0.5+0.5,1)

Apr 25 2018 3:56 PM UTC

}// 77/140

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Inspired by Neon City @jylikangas

u/BuRRak

I could save 4 bytes by using t*60 instead of frame and removing the 0 in decimal numbers but whatever
u/BalintCsala

x*.5 is x/2

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BuRRak

function u(t) {

c.width|=0;for(i=0;i<8;i++)x.arc(250+200*i,540+S(frame/15+i*30)*200,t**t/t, i -frame,-frame);x.fill();

Mar 23 2018 6:52 AM UTC

}// 102/140

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u/sigveseb

Feels very alive

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BuRRak

function u(t) {

t||(e=1);f=n=>n?(n*f(n-1)):1;e+=1/f(frame);throw e;

Feb 23 2018 3:38 PM UTC

}// 51/140

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Calculating Euler's number, not really useful at all

u/mitakkee

2

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BuRRak

function u(t) {

t||(p=0,n=1);for(i=1e5;i--;)p+=4/(n++*2-1)*(n%2?-1:1);throw p

Feb 21 2018 5:05 PM UTC

}// 61/140

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Calculating pi :)

Show more comments…
u/BuRRak

Oh no, i just found out that something similar is on dwitter already.. oh well
u/aleamb

nice
u/aleamb

nice
u/zanella

Thumbs up for using the error output instead of the canvas. :)
u/BuRRak

golfed down by 2 characters t||(p=0,n=1);for(i=1e5;i--;)p+=(n%2?4:-4)/(n++*2-1);throw p
u/BuRRak

nvm, 4 characters, dwitter should have edit comment feature t||(p=n=0);for(i=1e5;i--;)p+=(n++%2?4:-4)/(n*2-1);throw p
u/BuRRak

Oh no, just noticed it throws negative pi, just swap 4 with -4

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BuRRak

remix of d/7797 by u/BuRRak

function u(t) {

for(i=c.width=99;i--;)for(j=56;j--;)x.fillRect(i,j,S(i&j+t*60)*0.5+0.5,1)

Apr 25 2018 4:10 PM UTC

}// 73/140

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I really like how changing a few things results in something totally different

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BuRRak

function u(t) {

c.width|=0;for(i=0;i<8;i++)x.arc(250+200*i,540+S(frame/15+i*30)*200,75,c.width,7);x.fill();
//not trying to golf just seemed cool

Mar 22 2018 5:07 PM UTC

}// 129/140

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