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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.

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Current theme challenge: #Food

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weargoggles

function u(t) {

x.fillRect(0, 0, 1920, 1080)
x.font='128px serif'
for(i=0;i<16;i++)
x.fillText('🎃', 120*i, (100333*i+59*Math.abs(S(i))*t) % 1280)

Nov 7 2020 11:22 PM UTC

}// 129/140

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happy belated #pumpkin

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weargoggles

function u(t) {

c.width=1000
for(i=0;i<64;i++){x.beginPath()
x.moveTo(-1,i*410)
for(j=0;j<100;j++)
x.lineTo(-1+10*j,i*10+20*S(t+(j/9)*S(i/12)))
x.stroke()
}

Nov 7 2020 11:04 PM UTC

}// 140/140

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waves at the beach

u/joeytwiddle

Elegant #water #waves

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taupelink

remix of d/20512 by u/taupelink

function u(t) {

r=Math.random;for(i=k=60;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*18)*32,h=i*S(S(p=X/2-X*X/64)%C(q=Y-Y*Y/9)*p),x.fillStyle=R(h*6,h*p,h*q)

Nov 7 2020 9:10 PM UTC

}// 138/140

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d/20515

u/rep_movsd

#shrine #ancient

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flyink

function u(t) {

t||x.translate(960,540)
Z=1/C(t)
x.rotate(Z)
x.beginPath()
x.arc(0,0,t*50,0,Z)
x.stroke()

Nov 7 2020 5:45 PM UTC

}// 89/140

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vinyl record

u/Xen

welcome to the dwitter family!

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Xen

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑸𛡕👦𪑬𫁒𩑣𭀬𭀿𫱮𫑯𭑳𩑭𫱶𩐽𩐽🡕𚁘👥𛡸𛁙👥𛡹𛁖𛁖𚐺𥐨𥠽𭠽𭰽𞐬𜀬𮠽𨰮𭱩𩁴𪀽𪑮𫡥𬡗𪑤𭁨𛁺𚐬𥐨𭠫🐨𦀭𭠩𛰸𛁷𚰽𚁙𛑷𚐯𞀬𥠬𥠬𚁘𧡶𚐫𚁙𧡷𚐼𝐿𥠽𜀺𩡩𫁬𤱴𮑬𩐽𤠨𮠩𚐬𩡩𫁬𤱴𮑬𩐽𤠨𩁲𨑷𢑭𨑧𩐨𨰬𠰨𦀩𛁓𚁙𚐩𛁘𛁙𚐻`.replace(/u../g,'')))

Nov 7 2020 4:49 PM UTC

}// 140/140

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-[𝗗𝘄𝗲𝗲𝘁-𝗘𝗹𝘂𝗱𝗲𝗿]- Move mouse to evade enemy. #game

u/yonatan

really good! and pretty
u/Xen

thank you, closest to my original idea that bytes would allow, only thing i would change is more enemies and faster blur
u/DataMeta

noice noice! #interactive

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taupelink

remix of d/20409 by u/taupelink

function u(t) {

r=Math.random;for(i=k=60;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*18)*32,h=i*C(C(p=2*X-X*X/16)%C(q=2*Y-Y*Y/9)),x.fillStyle=R(h*p/3,h,h*q/3)

Nov 7 2020 4:09 AM UTC

}// 140/140

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d/20512

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tscotn

function u(t) {

b=255
for(i=0;i<c.width/20;i++) {
x.fillStyle=R(b,Math.random()*b,Math.random()*b,.1)
x.fillRect(0,Math.random()*c.height,1920,1080)
}

Nov 7 2020 2:02 AM UTC

}// 134/140

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Sunset Vibes

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sabre_sabyata

remix of d/7429 by u/p01

function u(t) {

for(c.width=i=210;i-=1/8;x.fillRect(99+(i-99)*C(t)+S(i)*r,S(i/67+S(t)/2)*75+C(i)*r,9,9))r=50*T(i/70-6),x.fillStyle=R(a=r*(9-C(i*3)**9),a*.3)

Nov 7 2020 1:30 AM UTC

}// 140/140

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obliterated belated halloween banana

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sabre_sabyata

function u(t) {

x.fillStyle = R(S(t)*255, S(t)*255, C(t)*255)
for(i=0;i<9999;i++)
x.fillRect(i/5,T(i/5)*S(t)*50+540, 9, 2)

Nov 7 2020 1:16 AM UTC

}// 106/140

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My wife's favourite colours 💙💛

u/Xen

welcome to the dwitter family

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rodrigo.siqueira

remix of d/20500 by u/rodrigo.siqueira

function u(t) {

 `﷽﷽${π=3.14}﷽﷽`
	!t&&x.translate(850,590);if(t<π)x.lineWidth=π,
x.rotate(t/18),λ=950*(1-S(t/2));x.strokeRect(-λ*3,-λ,2*λ,λ*2);
`﷽﷽﷽﷽﷽`

Nov 6 2020 10:55 PM UTC

}// 135/140

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if ( t < π ) { Deep Spiral } with lineWidth = π pixels #spiral (made of squares)

u/Xen

Nice code!