Dweets awesomed by u/vovanmozg

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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veubeke

function u(t) {

for(i=320;i--;x.fill(P=new Path2D(`M960 540`),P.arc(960,540,15*r**1.2,i*.524,(i+1)*.524)))r=i>>4,x.fillStyle=`hsl(${30*(i%16+t*r)},99%,50%)`

Mar 10 2021 5:05 PM UTC

}// 140/140

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u/magna

Sweet!
u/vovanmozg

👍

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smtsjhr

remix of d/21413 by u/smtsjhr

function u(t) {

for(c.width|=n=16;n--;x.stroke())for(i=50;i--;)w=12*C(n+t),u=T(t/9+n),k=w*w*C(i+u),x.lineTo(960+60*S(n/2)*w+k*S(i),540+30*w*C(n/2)+k*C(i+w))

Jan 24 2021 12:23 AM UTC

}// 140/140

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they're just having some fun!

u/katkip

wow

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pavel

remix of d/21114 by u/magna

function u(t) {

c.width=512
for(let i=23e3;i--;)i/1e3-12>T(T(S(i%80/13)*S(i/1e3-4*t)))&&x.fillRect(i%80,i/80,1,1)
for(i=6;i--;)x.drawImage(c,80,0)

Jan 3 2021 12:39 AM UTC

}// 130/140

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4x resolution from leveraging periodicity

u/magna

Smart! And a lot more beautiful! :)

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pavel

remix of d/21012 by u/pavel

function u(t) {

with(x)for(c.width|=i=710;i--;beginPath(fill(ellipse(40+18*C(a=++t%3.1416),0,w=S(a),!rotate(i*49+w/3),a,0,7))))setTransform(9,0,0,9,960,540)

Dec 17 2020 3:03 AM UTC

}// 140/140

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Torus Study #2

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pavel

function u(t) {

with(x)for(fillRect(i=-710,i,i*=-2,i);i--;clearRect(20+9*S(a=i+t),2,w=C(a),w>0))setTransform(16,0,0,16,960,540),rotate(i/226)

Dec 15 2020 11:04 PM UTC

}// 125/140

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Torus Study #1

u/magna

WOW!
u/vovanmozg

fantastic!

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pavel

remix of d/20901 by u/pavel

function u(t) {

for(i=c.width|=p=g=>(g(0)?k&3:k/4)*200+130*g(.8+(~~k+k/4&1||-1)*(i%120*41/13+5*t));k=--i/120;)x.fillRect(560+p(S),240+p(C),9,9)

Dec 4 2020 9:12 PM UTC

}// 127/140

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Moving #illusion

u/pavel

Discovered this randomly when golfing the original. Not sure why it happens.
u/danny@hille.dk

cool effect: the "feature" is caused by not truncating k=--i/120 -> k=--i/120|0 disables this feature :-)
u/KilledByAPixel

👍
u/danny@hille.dk

better solution: for(i=c.width|=p=g=>(g(0)?k&3:~~k/4)*200+150*g((k&1||-1)*(i%120*41/13+5*t));k=--i/120;)x.fillRect(560+p(S),240+p(C),9,9)

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pavel

function u(t) {

for(i=c.width|=0;i--;x.fillRect(X,540+200*C(a),-150,7))X=i%960*2,x.fillStyle=`hsl(${q=X/8+60*t},69%,${42+32*S(a=(q/32%1+(i>960))/.32)}%`

Dec 4 2020 8:45 PM UTC

}// 136/140

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Ribbons

u/pavel

Dynamically swapping the draw order to get proper overlapping. Change i>960 to 1 or 0 to see how this works.
u/Qwitter

cool, and thanks!

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pavel

remix of d/17103 by u/pavel

function u(t) {

for(t?m.push({X,Y,R})+x.beginPath(x.fill(x.arc(X,Y,R,0,7))):m=[];R=420/++t,Y=t%3*360,X=Y*Y*R%2e3,m.find(a=>Math.hypot(X-a.X,Y-a.Y)<R+a.R););

Nov 29 2020 4:06 AM UTC

}// 140/140

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Quicker Blots

u/Qwitter

sponged

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pavel

remix of d/20689 by u/yonatan

function u(t) {

for(c.width=w=128,i=2e3;z=--i>>7;x.fillRect(i%w,(4+S(a=i/6+7*t/z)+S(3*a^z)/3+S(9*a)/9)*(14-z),1,w))x.fillStyle=`hsl(200,${z*9}%,${i/7-z*z}%`

Nov 19 2020 2:45 AM UTC

}// 140/140

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Show more comments…
u/joeytwiddle

Excellent collaboration, you monsters!
u/danny@hille.dk

You got some serious golf-fu skills 👍
u/danny@hille.dk

+S(9*a)/9 can be approximated by constant .1 to shave off additional 6 bytes
u/yonatan

this is great!
u/DataMeta

impressive
u/joeytwiddle

I tried to reproduce in tixy.land but overflowed a bit https://twitter.com/joeytwiddle/status/13294…
u/Qwitter

nes vibes

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danny@hille.dk

remix of d/20618 by u/danny@hille.dk

function u(t) {

for(c.width=433,p=1;p++<6;)for(i=400;i--;)x.fillStyle=`hsla(${p*t*5},99%,50%,.4`,x.fillRect(i,m=C(i/(9*p+96)+t)*p*S(+p+S(i/66))*9+57,1,m)

Nov 16 2020 9:55 PM UTC

}// 137/140

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u/ciaccodavide

Smooth!

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