Dweets awesomed by u/rnbw

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.

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Current theme challenge: #Opposites

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pavel

function u(t) {

for(k=2e3;i=S(t+k),j=S(i*k--);f&&x.fillRect(960+540*i,540*++j,9,4))d=1-i*i-j*j,f=d**.5*2-i-j,x.fillStyle=R(g=8*f**3,g,g+28*f,1-.05/d)

Feb 28 2019 7:26 PM UTC

}// 133/140

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katkip

function u(t) {

// Transferring...








receiveMessage=pauseDemo=0;q="";l=q.length;for(i=616;i--;)q+=C(i+C(t+i/99)*10+t*29)<0?'0':'1'
throw q

Feb 28 2019 2:42 PM UTC

}// 128/140

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#binary #hax

u/rnbw

oh neat! i tried to do something like this once (never published it) but your execution is really good
u/Ath0r

cool!
u/joeytwiddle

#parallax
u/C010011012

throwing errors for animation? wow clever

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tomxor

remix of d/12492 by u/tomxor

function u(t) {

for(c.width=E=X=N=64;X--;)for(Y=N;Y--;x.fillRect(X,Y,K=eval(R)/N%1,K))E+=' '+'XXYYtt-*%&~^'[0|12*Math.random()];eval(E=E.slice(-8-t%16));R=E

Feb 26 2019 12:59 AM UTC

}// 140/140

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Algebraic Monkeys #fuzzing #waitforit

Show more comments…
u/tomxor

Searching for f(x,y,t) this time. If you have more patience then add operators, parens and increase string length in the slice.
u/Xen

c.width=X=E=N=64 lol
u/tomxor

heh, i missed that opportunity
u/DataMeta

Clever concept, like some old tv grasping at transmissions.
u/DataMeta

Haha, Xen
u/tomxor

Nice analogy :) like a TV into the computable universe, infinite channel! (sorta)
u/21medals

Why the space in between each character of E?
u/tomxor

Because -- and ++ are assignment operators, and I cannot allow those on loops variables X and Y. It's basically cheaper in chars to pad with spaces than test for this with a regex.

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pavel

remix of d/12516 by u/pavel

function u(t) {

for(;t<9;)u[c[t]=t]=50*t++
for(c.width|=a=9;b=a--;u[b]-p<50&&(c[a]=c[b],c[b]=v))x.fillRect(960+(p=u[a]+=v=c[a]*=u[a]**2<8e5||-1),440,50,200)

Feb 26 2019 12:36 AM UTC

}// 140/140

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#default #physics #uncompressed

u/13thptr

cool
u/lionleaf

Amazing!
u/Ath0r

Very nice!
u/katkip

!!

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rnbw

function u(t) {

for(c.width^=i=0;i++<34;){x.fillStyle=`hsl(${280-i*4},99%,40%,3%)`;x.arc(S((p=i+(0^-t*12)+S(i)/7))*17*i+960,C(p)*17*i+540,0,0,0);x.fill()}

Feb 22 2019 3:41 PM UTC

}// 138/140

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vertigo 🌀

u/rnbw

(i'm back at this again!)
u/sigveseb

Nice colors!
u/DataMeta

Great stuff.
u/CalSch

Cool! I think it would look cooler if it was at a higher frame rate. Is the frame rate low because of the style? Or is it a performance issue.

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rnbw

function u(t) {

for(c.width^=i=0;i++<40;x.arc(960,540,i*(20+S(t*3+i*25)*5),(f=t/4+i*2.515),f)){x.fillStyle=`hsl(${i*9},90%,50%,4%)`;x.fill()}

Feb 15 2019 3:54 PM UTC

}// 125/140

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stardom 💫

u/katkip

#cute
u/joeytwiddle

Feels like a relative of d/10485

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23_Skidoo

remix of d/12320 by u/23_Skidoo

function u(t) {

for(s=24,i=4e3;i--;f=((X-t*3)^Y)/9-t,x.fillStyle=`hsla(${S(f/128)*360} 75% ${s+C(f/s)*C(f*7+t)*70}%`)x.fillRect(X=i%82*s,Y=~~(i/82)*s,s,s)

Feb 13 2019 2:16 AM UTC

}// 138/140

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u/joeytwiddle

This is my favourite, smoothed: f=(X^Y)/9+t

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rnbw

function u(t) {

for(c.width^=i=0;i++<45;)for(j=-6;j++<23;x.fillStyle='#ac6'+(4+(i+j)%2*2))x.fillRect((i*(b=99+C(t)*35))+(a=S(t)*600%b)-500,(j*b)+a,d=b*.9,d)

Feb 7 2019 3:57 PM UTC

}// 140/140

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zooming tiles without transform! doesn't perform very well, though

u/rnbw

(i'm surprised that that hastily-made alpha adjustment worked...)

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rodrigo.siqueira

function u(t) {

X=Y=0
for(c.width|=i=1e3;i--;){
X=X*C(2*t+Y*2)+Y/4
Y=C(X+Y+X+t/3)-S(i+X+t)/3
x.fillRect(960+X*820,540+Y*400,5,5)
}

Feb 4 2019 2:16 AM UTC

}// 114/140

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Interaction of live attractors

u/katkip

WOWWW #attractor AWESOME
u/donbright

WOAH

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rodrigo.siqueira

remix of d/11965 by u/pavel

function u(t) {

for(x.fillRect(0,0,i=3e3,i);Q=S(--i*i);x.clearRect(960+150*(S(b)*4+S(i+t)*Q),540+150*(C(i*i)-(t%4>2?T(b+t):S(b+t))),4,4))b=i%6+t+(t%2>1?0:i)

Jan 28 2019 2:40 PM UTC

}// 140/140

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Torus, spheres, flow and bubbles

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u/rnbw

now THIS is a demo!
u/katkip

Yeah he win
u/13thptr

woah
u/joeytwiddle

Superb! Golf the end with i*(t%2>1) or i*!(t&1)
u/rodrigo.siqueira

Thanks @joeytwiddle for the golf trick. i*(t&1) also works and it's even shorter. And I found that t%4>2?... can be converted to t&2?... It works as a counter to change the function each 2 seconds.
u/yonatan

Also, since T and S take the same arguments (t%4>2?T(b+t):S(b+t)) can be (t&2?T:S)(b+t)
u/lionleaf

Wow! Now we're talking
u/vain

Wow, three fx in this tiny code? Great!

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