Dweets awesomed by u/joeytwiddle

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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joeytwiddle

function u(t) {

r=_=>i*i*k++
for(c.width|=k=i=30;i--;x.fill())x.lineTo(960+500*(C(a=r()+t)+S(b=r()+t)),540-3e3*C(r(x.fillStyle='#fa01'))/(9-3*S(a)+3*C(b)))

May 15 2020 6:18 PM UTC

}// 139/140

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Spikey orange spinning thing

u/joeytwiddle

Two hours later, while brushing my teeth, I realise the two 3* can be factored out
u/joeytwiddle

This animation was inspired by a 2018 TV show. Five awesomes if you can guess the name.
u/initramfs

StarFox? ;)
u/joeytwiddle

Nope, sorry!
u/joeytwiddle

It was inspired by a graphic from the TV show Origin

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rodrigo.siqueira

remix of d/18782 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=7)=>Y?f(X*X-Y*Y-.7,2*X*Y+.3,n-.1):x.fillStyle=`hsl(${i/3},80%,${C(n)*99}%`;i--;x.fillRect(i,t*60,1,999))f(i/480-2,1-t/9)

May 15 2020 5:25 PM UTC

}// 139/140

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Rainbow #Julia #fractal

u/joeytwiddle

Another beauty!

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jellyedwards

function u(t) {

w=c.width|=s=.3
with(x)for(n=a=0;a<6;beginPath(a+=s))for(i=0;++i<19;stroke())ellipse(w/2,w/3+t*S(i),25*i,i*(15+9*S(t)),0,a+s*n,a+s*(n^=1),n)

May 15 2020 12:40 PM UTC

}// 140/140

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bowl

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ntsutae

function u(t) {

c.width=960
k=S(t/1e3)/1e3
x.fillStyle='Navy'
for(i=k;i<1e3;i++)x.lineTo(C(d=i**3)*270+480,S(d)*270+270)
x.fill()

May 15 2020 12:13 PM UTC

}// 113/140

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Planet

u/aleamb

#planet

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nza

function u(t) {

c.width=1920
x.fillStyle='hotpink'
for(i=0;i++<10;)
x.fillRect(400+i*100+S(t)*300+S(t*25*(-1)**i)*10,600+S(t**1.5+i)*30,50,i*10)

May 15 2020 9:02 AM UTC

}// 128/140

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hotpink fish

u/sigveseb

Nice take on the #default :)
u/joeytwiddle

#worm

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joeytwiddle

remix of d/18737 by u/tomxor

function u(t) {

D=[5,4,7]
g=(n=3,s='')=>n?[...'X012345*/+-&|^~'].map(c=>g(n-1,s+c)):q(s)
q=E=>{try{D.every((Y,X)=>Y==eval(E))&&(S=E)}catch{}}
t||g();throw S

May 15 2020 5:51 AM UTC

}// 140/140

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Expression Miner (bruteforce)

u/joeytwiddle

Unfortunately I couldn't use alert(S) so I had to drop some numbers!
u/joeytwiddle

Tryn=4 and either D=[1,3,7] or D=[1,1,4,27] #unimproved
u/joeytwiddle

Rather than searching, it might be more productive to display/draw some of the unusual small expressions, so we can look for ways to use them in future

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smtsjhr

function u(t) {

c.width|=0;for(i=250;i--;){x.fillRect(960+50*C(a=2.4*i+10*t)*(k=1.02**(200-1*i)),540+50*S(a)*k,r=15*k+160*C(t/2),r)}

May 15 2020 4:53 AM UTC

}// 116/140

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rodrigo.siqueira

remix of d/18558 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=0)=>Y<9?f(X*X-Y*Y-.8,2*X*Y+.2,n+.16):x.fillStyle=`hsl(${i/9},75%,${n*n}%`;i--;x.fillRect(i,t*60,1,999))f(i/480-2,1-t/9)

May 14 2020 4:15 PM UTC

}// 138/140

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Laser color printing #julia set #fractal

u/sigveseb

Very pretty colors!
u/rodrigo.siqueira

This code stems from original u/Pavel's https://www.dwitter.net/d/18323
u/joeytwiddle

Multibeam: x.fillRect(i,t*60,1,999),Math.random()<.94&&(x.fillStyle='#000',x.fillRect(i,t*60+1,1,999))

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rafroller

remix of d/18779 by u/rafroller

function u(t) {

u=t/4;
c.style.filter='invert()';for(i=0;i<10;){for(j=0;j<6;)x.fillRect(60*C(u*j)+211*i-99,60*S(u*i)+212*j-99,2,2),j++;i++}

May 14 2020 3:05 PM UTC

}// 123/140

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I've been wanting to do this for a while :) #lissajous #curve - fullscreen version

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taupelink

remix of d/18769 by u/taupelink

function u(t) {

f=(X,Y)=>Y?f(Y,X%Y):X;for(i=1e3;i--;){z=Math.random()*3e5|0;g=f(a=z%192,b=z/192|0);if(g>5){x.fillText(g,10*a,10*b)}}

May 14 2020 11:26 AM UTC

}// 116/140

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d/18774

u/taupelink

GCD(X,Y) plotted, if greater than 5
u/BuRRak

It looks like characters of some ancient script, nice!

dwitter.net | joeytwiddle (61391)