Dweets awesomed by u/DonKarlssonSan

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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aemkei

remix of d/22633 by u/aemkei

function u(t) {

for(W=54,L=i=2;i<4e4;i+=1)i%W||(i+=W),!(i%2)|i<W||i%W&(i^L*L)%5?I=i:(I=L-2*Math.round((L-i)/4)-W+1,L=i),x.fillRect(I%W*W-220,W*(0|I/W),W,W)

Apr 26 2021 7:12 PM UTC

}// 139/140

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a larger #maze

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Agnes

function u(t) {

for(c.width|=i=0,x.scale(50,50);i<9;x.stroke(),x.beginPath(),i++)for(y=50;--y;x.lineTo(8+2*i+S(t+y/50)*6,8+2*y/25));

Apr 26 2021 12:40 PM UTC

}// 116/140

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Bendy default

u/Agnes

#default
u/sigveseb

nice and stretchy

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ketolli

function u(t) {

c.width=a=1920;for(i=0;i<a;i++)x.fillRect((C(i)+0.5)*a,C(t+i*10)*200+i,i/90,i/3)

Apr 26 2021 8:30 AM UTC

}// 81/140

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Interlaced Tentacles

u/Xen

nice style
u/ketolli

Thanks!

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Agnes

function u(t) {

for(l=t?l:0,q=c.width+=0;--q;Q=t?Q+`l ${e} ${f}`:"M 960 540")e=3*S(a=l*t*q),f=3*C(a),l+=(e*e+f*f)**.5;x.stroke(new Path2D(Q))

Apr 24 2021 10:33 AM UTC

}// 125/140

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Seahorse pattern (performance warning)

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danny@hille.dk

remix of d/22601 by u/Toshiya-Marukubo

function u(t) {

for(j=l=c.width|=0;j-=48;c.style="filter:blur(5px)contrast(4")for(i=1e3;i-=50;x.font='4cm r')x.fillText(j,j,T(i*j-S(i*l+j)+t)*i)

Apr 23 2021 4:15 PM UTC

}// 128/140

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golf and play

u/donbright

wow

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DonKarlssonSan

function u(t) {

c.width=1920
for(X=0;X<1920;X++) {
  for(y=0;y<70;y++) {
    x.fillStyle=R((S((X+y*3+t)/50)+1)*127,t,0,1)
    x.fillRect(X,y+500,1,1) 
  }
}

Jan 12 2021 6:00 PM UTC

}// 140/140

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Candy Cane

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tomxor

remix of d/20405 by u/tomxor

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐽𙱦𪑬𭁥𬠺𪑮𭡥𬡴𚀧𞱦𫱲𚁬𩑴𘁺𛁁𛁂𛁮𛁘𛁙𛁩🐲𝀻𪐻𦀫👁𛁙𚰽𠠩𚀴𜀫𦀯𝀸𧠱𝠫𦐯𝀸𚐥𜐵🠱🱸𛡦𪑬𫁒𩑣𭀨𦀬𦐬𫠯𚰫𮠪𚠮𝐬𜐯𞀩𞠨𮠽𜐬𬠽𚁮𚰷𚐪𚡩𚡴𛁁🐲𚡓𚁲𚐬𠠽𜠪𠰨𬠩𛀭𛑮𚑼𯀨𫠽𞀬𦀽𜐲𞀰𚱩𚡓𚁴𚐬𦐽𝰲𜀫𪐪𠰨𭀩𛀭𛑩𚐻`.replace(/u../g,'')))

Jan 10 2021 12:15 AM UTC

}// 140/140

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2D #raymarching #globalillumination

Show more comments…
u/KilledByAPixel

very cool 👍
u/Xen

Love it!
u/Qwitter

cool, i wish i could follow the js. what does the code look like unpacked?
u/Qwitter

Sometimes Im amazed at how stupid I am: 'filter:invert(';for(let z,A,B,n,X,Y,i=24;i;X+=A,Y+=B)(40+X/48^16+Y/48)%15>1?x.fillRect(X,Y,n/++z**.5,1/8):(z=1,r=(n+7)**i*t,A=2*S(r),B=2*C(r),--n)||(n=8,X=1280+i*S(t),Y=720+i*C(t),--i);
u/jellyedwards

Wow!
u/Pascal

damn
u/aleamb

fucking awesome
u/sigveseb

I let it sit for a while and took a screenshot https://imgur.com/a/MokWulC
u/magna

wow
u/DataMeta

absolutely amazing
u/iverjo

Very nice. Writeup please?
u/joeytwiddle

Great! #lighting #shadow
u/vain

great raycast

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rodrigo.siqueira

remix of d/18551 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=0)=>X*X<9||Y<9?f(X*X-Y*Y-.4,2*X*Y-.7,n+2.5):x.fillStyle=`hsl(0,75%,${n}%`;i--;x.fillRect(i,t*60,1,999))f(i/480-2,1-t/9)

Apr 30 2020 1:52 AM UTC

}// 138/140

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#Fractal star filaments from #Julia set

u/aleamb

wow! amazing!
u/PoweredByWill

Wow. Why does this remind me of the credits from Total Recall?

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rodrigo.siqueira

remix of d/18531 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=11)=>X/Y<n?f(X*X-Y*Y-.8,2*X*Y+.2,n-.3):x.fillStyle=`hsl(0,99%,${n**1.9}%`;i--;x.fillRect(i,t*60,1,999))f(i/490-2,1-t/9)

Apr 29 2020 5:41 PM UTC

}// 138/140

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#Julia set fibers. #fractal similar to "Pickover stalk" and biomorph forms. Using this compact form of the test: X/Y < n

u/rodrigo.siqueira

#pickover

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rodrigo.siqueira

remix of d/18440 by u/rodrigo.siqueira

function u(t) {

for(let i=2e3,f=(X,Y,n=59)=>X*Y<n&&f(X*X-Y*Y-.8,2*X*Y+.2,n-1,x.fillStyle=R(C=(X<Y)*i/Y,C/3));i--;x.fillRect(i,t*180,1,3))f(i/490-2,1-t/3)

Apr 28 2020 5:10 PM UTC

}// 137/140

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Orange black #Julia set #fractal

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