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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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DataMeta

function u(t) {

c.style.filter=`invert(`
with(x)for(c.width|=i=384;i--;)a=192/(i*3),x.fillRect(1920*(T(i)+a*t)%3e3,540+540*S(a*2e3),a*6<12?d=a*6:d=0,d)

Feb 6 2021 3:01 AM UTC

}// 135/140

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flying among the #stars

u/cantelope

#starfield #parallax
u/New_Core

...(the with(x) dont do anything here.. )
u/New_Core

but I totaly understand.. I forget to remove stuff all the time.. ;) ..well done else
u/Qwitter

U="🛸";c.style.filter=invert( with(x)for(c.width|=i=384;i--;x.font="99px A",fillText(U,p=540,p+S(7*t)*p/2))a=192/(i*3),x.fillRect(1920*(T(i)+a*t)%3e3,540+540*S(a*2e3),a*6<12?d=a*6:d=0,d)
u/DataMeta

haha yes, I was mucking about with arcs to start :) thanks

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Qwitter

remix of d/21487 by u/Qwitter

function u(t) {

eval(unescape(escape`𨴮𬵴𮕬𩔮𩥩𫅴𩕲🔢𪕮𭥥𬥴𚄢𞵷🕣𛥷𪕤𭅨🔱𞔲𜄻𮄮𩥩𫅬𤵴𮕬𩔽𘤣𜅆𡤢𞵎🔱𜤸𞵦𫵲𚅪🔹𜤱𝤻𪤭𛔻𚔨𦄽𚅪𙕎𚔪𭴯𣤬𦔽𚄨𪤯𣤩𧤰𚔪𭴯𣤬𮄮𩥩𫅬𤥥𨵴𚅘𛅙𛄹𚥓𚅍𨕴𪄮𪅹𬅯𭄨𦄭𞔶𜄬𦔭𝔴𜄩𛴳𜴭𞔪𭄩𚴵𚥃𚅘𛴶𝤭𜔸𚥴𚔬𞔩𚔊`.replace(/u../g,'')))

Jan 28 2021 5:21 PM UTC

}// 133/140

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They are.

Show more comments…
u/danny@hille.dk

Nice!
u/Xen

love you!
u/Qwitter

:)
u/magna

Lovely style!
u/smtsjhr

i am also in love ok.
u/Qwitter

:) :)

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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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KilledByAPixel

function u(t) {

with(x)for(i=c.width|=c.style.filter='invert(',translate(i/2,540);i--;rotate(6))fillStyle=R(0,a=99+80*S(i*i+t),200,.2),fillRect(300,0,a,i/a)

Jan 26 2021 5:23 PM UTC

}// 140/140

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Solar Eclipse ☀️+🌑

Show more comments…
u/Xen

nice!
u/KilledByAPixel

#eclipse
u/danny@hille.dk

wow - that is epic!
u/danny@hille.dk

Good looking code and great visuals!
u/danny@hille.dk

good thing dwitter only allows 140 bytes, or someone would probably have done something like this:
u/danny@hille.dk

with(x)for(i=c.width|=c.style.filter='blur(.3vw)invert(',translate(1250,540);i--;rotate(1))fillStyle=R(a=99+80*S(i*i+t),a*3,255,.2),fillRect(60,0,a,i/a);x.drawImage(c,-600,-900)
u/KilledByAPixel

Thank you 😊
u/cantelope

#selfdefeat

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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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Pascal

remix of d/21403 by u/danny@hille.dk

function u(t) {

c.width=w=70;for(i=2800;i--;)x.fillRect(X=i%w,Y=(i-X)/w,0<T(T(S(X/7+5*C(t))+S(Y/7-5*t))),1)

Jan 24 2021 2:39 PM UTC

}// 91/140

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noisy donuts

u/danny@hille.dk

Mmmmm donuts
u/Xen

nicely done

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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