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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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rodrigo.siqueira

remix of d/21470 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,n=120)=>T(S(X+Y/5)*5+S(n*X))<9?f(X*X-Y*Y,2*X*Y+.7,n-2):n
for(var i=1921;i--;){
 x.fillRect(i,t*120,.5-f(i/4e4-.45,t/300+.205)/40,2)
}

Jan 28 2021 1:36 PM UTC

}// 140/140

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The thorns have grown (from previous dweet). Branches noir #forest

u/katkip

WOW

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rodrigo.siqueira

remix of d/21434 by u/rodrigo.siqueira

function u(t) {

for(i=1080;i--;x.fillRect(a=t*120,i,2,.2-f(a/1000-1.3,i/990)))f=(X,Y,n=90)=>T(t*X)*S(Y)*2<2?f(X*X-Y*Y,2*X*Y+.7,n-=2):n/70

Jan 25 2021 2:54 PM UTC

}// 121/140

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Thorn forest #mandelbrot #fractal

u/Xen

Love it!
u/aaaaaz

#forest

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Qwitter

function u(t) {

eval(unescape(escape`𬔽𨴮𭵩𩅴𪅞🔰𞵷🔲𚤵𝤰𞵦𫵲𚅪🔰𞵪🄹𞵪𚴫𚕻𮄮𩥩𫅬𤵴𮕬𩔽𤤨𚄱𜴪𭄩𙔲𝔶𛄰𛄨𜤱𚥴𚔥𜤵𝤩𞵸𛥦𪕬𫅒𩕣𭄨𝄰𜄫𪤪𜔰𜄫𤴨𭄩𚤳𜄰𛄴𜄰𛄵𜄬𜤰𜄩𯔻𩥯𬤨𪔽𜴻𪔭𛔻𚕦𫵲𚅫🔹𞵫𛔭𞴩𮄮𩅲𨕷𢕭𨕧𩔨𨴬𪴥𜴪𬔯𜴬𚄨𪴯𜴩𧤰𚔪𭴯𜴬𬔯𜴬𭴯𜴩`.replace(/u../g,'')))

Jan 18 2021 8:45 PM UTC

}// 138/140

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Defaulting Party!

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jwc

function u(t) {

for(c.width|=i=q=r=s=.1;i<t;b=4*i/t,x.fillRect(960+16*(q*C(t)+s*S(t)),540+20*r,b,b),i+=.01)o=r,r+=(q*(28-s)-r)/50,s+=(q*o-2*s)/50,q+=(o-q)/5

Dec 24 2020 10:17 PM UTC

}// 140/140

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Rotating Lorenz Attractor

u/jwc

Deleted my previous attempt and replaced it with this instead because I found an obvious savings that allowed me to improve rect size. If you can save 5 chars, you can replace s*S(t) with (s-28)*S(t) to center the rotation. Alternatively, if you can save one char, you can remove b, make the last two args of fillRect …,4*i/t,4), and use the previous centering method with a small concession to the rect shape.
u/magna

Done! d/21062
u/magna

The key was replacing (q*o-2*s)/50 with q*o/50-s/25
u/jwc

Nice!!

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anotherkitten

function u(t) {

x.fillStyle="#daf1"
x.fillRect(0,0,2e3,2e3)
for(i=799|0;i--;)x.arc(960+S(t+i)*200,540+C(t+i)*200,300,I=t+i/14,I)
x.beginPath(x.stroke())

Dec 18 2020 6:03 PM UTC

}// 136/140

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u/Xen

smooth!

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lerc

function u(t) {

eval(unescape(escape`𭁼𯀨𨰮𭱩𩁴𪀯🐶𚐊𣐽𨐽🡸𛡦𪑬𭁥𬠽𨐿𘡮𫱮𩐢𞠢𨡬𭑲𚀱𬁸𚑢𬡩𩱨𭁮𩑳𬰨𞐰𙐢𒡍𚀩𞱸𛡤𬡡𭱉𫑡𩱥𚁣𛀰𛀰𚐊𩡯𬠨𪐽𫠽𞐰𞰭𛑩𞰩𮀮𩡩𫁬𤡥𨱴𚀱𝠰𛑓𚁘👩𚱴𚠴𚐪𚀱𛐨𭠽𠰨𪐪𫠩𚐪𭠩𚡮𛁶𚡮𚱮𛀴𛀲𛁸𛡦𪑬𫁓𭁹𫁥🐢𘱆𘠫𚁩𚰱𜀩𛁍𚁃𚁘𚐼𜀩𚐊`.replace(/u../g,'')))

Dec 14 2020 11:58 AM UTC

}// 140/140

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Christmas ornament

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Lynx

function u(t) {

for(i=0;i<100;x.fillStyle=R(127,++i*2,i)){y=540+0.5*7.5*t*t*(i%2?-1:1);x.fillRect(i*7.5*t,y,20,20)
x.fillRect(1920-i*7.5*t,y,20,20)}

Dec 4 2020 2:38 PM UTC

}// 132/140

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fun with physics formulas (newbie to dwitter)

u/joeytwiddle

When you pop into the supermarket because you need two eggs

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ciaccodavide

remix of d/20877 by u/pavel

function u(t) {

q=n=>t/n-(t/n+.5|0)
p=n=>60*n*Math.abs(q(n))
with(stats.dom.style)left=p(16)+'px',top=p(9)+'px',visibility=''
stats.setMode(q(9)<0^q(16)<0)

Dec 1 2020 8:09 AM UTC

}// 139/140

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DVD Stats

u/ciaccodavide

It doesn't change only when it hits the corner ;)
u/ciaccodavide

#DVD
u/Xen

clever lol
u/pavel

Very nice
u/ciaccodavide

#fps

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Germain

function u(t) {

c.width=1980
for(var a=4;a<45;a++){
x.font=a*9+"px a"
x.fillText(a==44?"🐸":"🟢",700-C(t*3+a/5)*150,120+(a*a*2.3)/5)}

Nov 22 2020 12:48 PM UTC

}// 115/140

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#emoji

u/ciaccodavide

SnakeFrog!
u/danny@hille.dk

So I made some minor tweeks - now I'll never sleep again: for(c.width|=a=45;--a;)x.font=450-a*9+"px a",x.fillText(a==1?"🤡":"🍩",800-C(t*3+a/4)*155,800+(a**1.72*S(t)))
u/danny@hille.dk

Shave off 5 chars: for(c.width|=a=45;a--;x.fillText(!a?"🤡":"🍩",800-C(t*3+a/4)*155,800+a**1.72*S(t)))x.font=450-a*9+"px a"
u/Germain

Yuck ! :D

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ciaccodavide

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚐊𨰮𭱩𩁴𪁼🐱𒡰👸𛡣𬡥𨑴𩑐𨑴𭁥𬡮𚁤𫱣𭑭𩑮𭀮𬑵𩑲𮑓𩑬𩑣𭁯𬡁𫁬𚀧𨱡𫡶𨑳𙰩𦰱𧐬𙰧𚐊𮀮𩡩𫁬𤱴𮑬𩐽𬀊𮀮𬱨𨑤𫱷𠡬𭑲🐱𜀰𒡸𛡳𪁡𩁯𭱃𫱬𫱲👒𚀰𚐊𮀮𨑲𨰨𞐶𜀬𝐴𜀬𜰳𜰫𤰨𭀩𚠱𜀰𛀰𛀹𚐊𮀮𩡩𫁬𚀩`.replace(/u../g,'')))

Nov 20 2020 5:02 PM UTC

}// 128/140

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What lies behind the canvas

u/Xen

cool idea
u/ciaccodavide

Thanks :)
u/danny@hille.dk

nice trick
u/DataMeta

#fourthwall