Dweets awesomed by u/skeletonNatte

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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yonatan

remix of d/15725 by u/katkip

function u(t) {

with(x)for(q=j=65;j--;fillStyle=R(q,j*3,q-i*q),fill(stroke()))for(beginPath(i=5);i--;)arc(960+S(m=i*11+t)*400,340+C(m)*200+j*5,(j&64)*q,0,7)

Sep 17 2019 5:51 PM UTC

}// 140/140

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u/DataMeta

#uncompressed
u/katkip

wow good job
u/pavel

another take with(x)for(r=960,j=65;j--;fillRect(...d))setTransform(2,0,0,1,960,400+4*j),rotate(t),strokeRect(...d=[r,r,r*=-2,r]),fillStyle=R(64,3*j,r=99)

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mildlybean

function u(t) {

for(i=a=c.width|=0;i--;x.fillRect(i,i^X?F(i):Y,9,15))t?F=f=>S(f/99+t)*66+999:X=Y=v=b=0;Y+=++v;if(Y>F(X=(X+a+b)%a))Y=F(X),v=-v,b+=C(X/99+t)*9

Sep 7 2019 6:56 PM UTC

}// 140/140

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Gravity on a curved, moving surface

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u/KilledByAPixel

👍
u/atgz

very impressive
u/metamero

nice!! #gravity #physics
u/0x04

Nice to see that you cracked the 140 char mark! 👌
u/joeytwiddle

Like a roulette simulator! Can you guess where it will stop?
u/katkip

I consider this a life form
u/iverjo

Impressive for a dweet!

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dmoura

function u(t) {

c.width|=0
x.translate(960,540)
x.rotate(-t/2)
x.fillStyle = R(0,50,100,0.2)
for(i=0;i<1300;i+=.3)
  x.fillRect(C(i)*i,S(i)*i,i/6,i/8)

Sep 4 2019 10:50 AM UTC

}// 134/140

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Galactic swirl

u/13thptr

nice style
u/aleamb

stylish!
u/dmoura

thanks! :-)
u/lionleaf

#swirl
u/iverjo

Beautiful

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DataMeta

remix of d/15509 by u/DataMeta

function u(t) {

c.style.background=R(0,96,192);if(t<3)for(i=2096;i--;)x.fillStyle=R(l=S(t)*i/7.5,l*.7,l*.4),x.fillRect(i-99,1080-C(S(t+i/270))*S(t)*i/6,7,7)

Aug 30 2019 5:31 PM UTC

}// 140/140

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Sand dunes

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u/katkip

#realistic
u/katkip

nice
u/KilledByAPixel

👍
u/metamero

cool!!
u/DataMeta

thanks!
u/DataMeta

blue martian dunes in a dust storm: c.style.background='#CBA486';if(t<3)for(i=2096;i--;)x.fillStyle=R(l=S(t)*i/20,l/.65,l/.5),x.fillRect(i-99,1080-C(S(t+i/270))*S(t)*i/6,7,7)
u/joeytwiddle

#landscape

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taupelink

remix of d/14804 by u/taupelink

function u(t) {

t||(P=[2],n=2);f=X=>P.reduce((s,q)=>s|!(X%q),0);n>2&&f(n)||(P.push(n),x.fillText(n,(n%100)*19,10+10*(n/100|0)));n++

Aug 11 2019 3:28 AM UTC

}// 116/140

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List of #prime #primes, stored in an array. Best in fullscreen view.

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KilledByAPixel

remix of d/15260 by u/KilledByAPixel

function u(t) {

for(w=i=99;i--;)for(j=0;j<9;x.fillRect(i*20,j++?w*j+w+w*C(q/9)/j+59*C(q/3.9)/j:0,20,3e3))q=(j*w+i+t*j**3),x.fillStyle=R(9+j*40%w,j*20,w-j*9)

Aug 9 2019 6:28 PM UTC

}// 140/140

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#landscape #panorama #uncompressed

u/katkip

nice
u/KilledByAPixel

Code explanation at http://frankforce.com/?p=6835

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pavel

remix of d/15202 by u/pavel

function u(t) {

with(x)for(i=t?0:200;i--;i-198||clip())beginPath(fillStyle=R(a=255-i,a,j=1-i/199,.2)),fill(arc(Y=760+i,Y-420,500*(j?1-j*j:3),0,7))

Jul 30 2019 7:37 AM UTC

}// 130/140

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Poor man's ray tracing v2

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KilledByAPixel

remix of d/14863 by u/KilledByAPixel

function u(t) {

c.width|=0
p=999/(2*Math.PI)
for(k=4;--k;)for(j=1e3;a=j--/p*3;)x.arc(960,540,k*129+50*S(j/p+a*k*k)*(S(k*a-t*4/k)/2+.5),a,a)
x.fill`evenodd`

Jul 28 2019 4:14 PM UTC

}// 139/140

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Ring Weave Worms

u/katkip

looks 3d #d3

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f8f82804

remix of d/15120 by u/f8f82804

function u(t) {

eval(unescape(escape`𩡯𬠨𮀮𩱬𫱢𨑬𠑬𬁨𨐽𜀮𜠬𪐽𞀶𝀻𪐭𛐻𚑷𪑴𪀨𥁛𪰽𪐥𞑝👴🱔𦱫𧐺𮱡𞠰𛁢𞠰𛁪𞠰𯐩𮀮𩡩𫁬𤡥𨱴𚁩𙐳𚠵𜠴𚰱𞐹𚰲𝐴𚠨𨐽𨐯𜠫𚀨𪡞𪠾🠱𚐦𜐩𚐬嵮𚁫𛰳𚐪𝐲𝀫𜐵𚰲𝐴𚠨𨠽𨠯𜠫𚁪𙠲𚐯𜠩𛀲𛀲𚐬𪠫🐲𚡍𨑴𪀮𬡡𫡤𫱭𚀩𛑛𜀬𛠵𛀱𛀳𛀲𛠵𛀲𧑛𪱝`.replace(/u../g,'')))

Jul 24 2019 9:24 PM UTC

}// 140/140

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#chaos #fractal #waitforit

u/f8f82804

#chaosgame

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taupelink

function u(t) {

t||(x.font=`30em"`,x.fillText("1+",40,620),x.fillText("1",1050,400),x.fillRect(570,b=450,1200,24))
x.drawImage(c,0,0,2e3,1e3,650,b,1100,550)

Jul 24 2019 3:24 AM UTC

}// 140/140

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Continued fraction for the golden ratio, 1+sqrt(5)/2. #math #numbertheory https://en.wikipedia.org/wiki/Golden_ratio

u/taupelink

hmm, doesn't seem to work on iOS Safari
u/taupelink

to get it to work on iOS/MacOS, replace 2e3 with 1920 and 1100 with 1e3.
u/taupelink

* maybe it's a safari issue rather than an OS issue. * on my iOS device, that adjustment seems to work temporarily, but then the browser has to reload the screen. ¯\_(ツ)_/¯

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