Dweets by u/Jezza

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: #Opposites

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Jezza

function u(t) {

c.width|=0;x.font='99px monospace';if(!t)p=3,a=2,o=0,q=2;p+=24/a/(a+1)/(a+3)/(a+=4);x.fillText((p+o).toFixed(15),9,99);if(p>q)p-=q,o+=q;q/=2

Jan 31 2018 10:32 PM UTC

}// 140/140

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I thought I'd see if I can calulate PI in 140 chars. Math.PI is 3.141592653589793, which is 15 decimal places. 15 decimal places is precise enough to calculate the circumference of the solar system (including Pluto) with an accuracy of a meter. The formula is Nilakantha's from the 15th century. You could also just print 245850922/78256779 but doing that doesn't seem much better than just printing Math.PI.

u/donbright

#pi #math

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Jezza

function u(t) {

if(!t)q=[];c.onmousemove=e=>q.unshift(e);c.width=window.innerWidth;for(i=0;i<50;i++)q[i]?x.fillRect(q[i].x+S(z=i+t*9)*5,q[i].y+C(z)*5,2,2):0

Jan 30 2018 3:15 AM UTC

}// 140/140

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Have a mouse around.

u/lionleaf

That's a fun one!
u/CtrlAltCuteness

Works on a Samsung Galaxy Note 4 with device's stylus and a web browser supporting the mouseover stuff.
u/joeytwiddle

#interactive

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Jezza

function u(t) {

f=C(t),g=100,k=3**f-2*C(4*t)-S(t/12)**5,x.fillStyle=`hsla(${t*g},100%,50%,.1)`,x.arc(960+S(t)*k*g,540-f*k*g,20,0,7),x.fill(),x.beginPath();

Jan 29 2018 10:05 AM UTC

}// 139/140

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Watercolour butterfly!

u/Punky

Cute!
u/donbright

:)
u/joeytwiddle

#rainbow #butterfly #cute

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Jezza

function u(t) {

if(!t)x.beginPath(),x.fillStyle='red';m=16*Math.pow(S(t),3);n=5*C(2*t)+2*C(3*t)+C(4*t)-13*C(t);x.lineTo(m*30+960,n*30+540);x.fill();

Jan 28 2018 2:43 AM UTC

}// 133/140

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Don't forget Valentine's Day is coming up!

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Jezza

function u(t) {

with(x){if(!t)translate(w=960,h=540);f=g=>S(t*g)*99+99;drawImage(c,-w,-h,w*2,h*2),rotate(.01);fillStyle=R(f(1),f(.9)),fillRect(0,-9,w*3,18)}

Jan 26 2018 7:03 AM UTC

}// 140/140

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Jezza

function u(t) {

x.drawImage(c,0,-2);for(i=20;i--;)x.fillStyle=R(S(i+t)*64+191,C(i+t*2.1)*64+191,S(i+t*3)*64+191),x.fillRect(i*150-300+S(t)*300,1e3,50,80)

Jan 25 2018 4:21 AM UTC

}// 137/140

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Jezza

function u(t) {

c.width|=0;x.font='20em a';x.textAlign="center";x.fillText([b='Never gonna','give',d='you','👆','',b,'let',d,'👇',''][~~(t*4)%10],960,540)

Jan 22 2018 10:44 AM UTC

}// 136/140

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u/zanella

Nice trick buffering the repeated terms!
u/donbright

lolol
u/joeytwiddle

On my Mac, I see the hands at 12em but not at 20em.
u/Jezza

@joeytwiddle, interesting - seems to work on safari though.

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Jezza

function u(t) {

c.width|=[h,m,s]=new Date().toTimeString().split(/\D/);[h*5,m,s].forEach(a=>{for(r=b=540;r--;)x.fillRect(r*S(p=a/9.5492)+860,b-r*C(p),9,9)})

Jan 19 2018 1:58 AM UTC

}// 140/140

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Simple clock

u/41407

Perfect!

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Jezza

remix of d/5958 by u/Jezza

function u(t) {

x.d=x.drawImage;f=frame;x.globalCompositeOperation='xor';x.fillStyle=R(a=f%170,0,f%130);x.fillRect(f%1920,1079,1,1);x.d(c,-1,-1);x.d(c,1,-1)

Jan 13 2018 2:03 AM UTC

}// 140/140

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Some colour!

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Jezza

remix of d/5896 by u/Moosething

function u(t) {

x.globalCompositeOperation='xor';
x.fillRect(frame%1920,1079,1,1)
x.drawImage(c,-1,-1)
x.drawImage(c,1,-1)

Jan 12 2018 11:17 AM UTC

}// 106/140

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Be sure to checkout fullscreen.

Show more comments…
u/zanella

You got my Awesome when I switched to fullscreen. Gorgeous, great job!
u/loni_art

feels like a carpet!
u/magna

Great!
u/sigveseb

yes this is good! neeeds fullscreen though!
u/breakster

I don't know this fractal. What is it called?
u/iverjo

Wow!
u/J2D28U

Its like a persian carpet or something...
u/Jezza

@breakster, I don’t know if it has a name - I was just messing about with Moosething’s dweet.
u/BirdsTweetCodersDweet

#fractal #carpet #generator #fullscreen

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