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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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taupelink

remix of d/15512 by u/taupelink

function u(t) {

for(i=d=e=f=1e3;i--;x.fillRect(d*z|0,e*z|0,1+r%2,1+i%2))[d,e,f]=[(r=Math.random(z=99)*z|0)/5+(p=1+f)*C((q=d*3)+r/2),r%11+T(q)/p,i%7/5+1/p]

Aug 24 2019 2:40 PM UTC

}// 138/140

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taupelink

remix of d/15498 by u/taupelink

function u(t) {

for(i=d=e=f=1e3;i--;x.fillRect(d*z|0,e*z|0,1,1))[d,e,f]=[(r=Math.random(z=99)*z|0)/5+(p=1+f)*C((q=d*3)+r*r/2),r%11+T(q)/p,i%7/5+1/p]

Aug 24 2019 2:22 PM UTC

}// 132/140

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katkip

function u(t) {

c.width|=0;x.translate(z=960,540);for(i=7;i--;x.fillRect(-z,0,2e3,4))x.beginPath(),x.fill(x.arc(S(t+i*1.68/4)*500,0,50,0,7)),x.rotate(.45)

Aug 24 2019 12:27 PM UTC

}// 138/140

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That #illusion that everybody knows but not very precise because of golfing. https://media1.tenor.com/images/4ba3468dfd7f…

u/aleamb

relaxing!

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katkip

function u(t) {

eval(unescape(escape`𪑦𚀡𭀦𙠨𥀽𫁯𨱡𫁓𭁯𬡡𩱥𦰢𭁣𫐢𧐩🐽𭑮𩁥𩡩𫡥𩀩𮱔👛𧐻𩡯𬠨𪰽𜀻𥀮𫁥𫡧𭁨🀲𝐶𞱫𚰫𚑔𛡰𭑳𪀨𨁨𬱬𚀤𮰲𝀰𛑫𚡫𚡫𛰨𪰪𚠱𛠹𞐩𚠨𤰨𪰯𞐩𛱫𚱫𛰨𪰫𪰯𞐩𚑽𛀤𮰱𜀰𛐵𜀪𤰨𪰯𜠱𛐱𛠶𚑽𙐬𙁻𝀵𛑫𛰹𞑽𙐩𨀩𯐠`.replace(/uD./g,'')))

Aug 24 2019 8:18 AM UTC

}// 127/140

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Turbo colormap. Use localStorage["tcm"] (256 elements array)

u/katkip

Add localStorage.tcm = T; for (i in T) x.fillStyle = T[i], x.fillRect(i*5,0,5,2e3)
u/mildlybean

Cool!

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DataMeta

remix of d/15449 by u/DataMeta

function u(t) {

c.style.background=R();if(t<2)for(i=1920;i--;)x.fillStyle=R(l=S(t)*i/7,l,l),
x.fillRect(i,540+S(C(t+i/64+l/64))*S(t)*i/4,9,9)

Aug 24 2019 1:04 AM UTC

}// 125/140

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#d3 #shading #lighting

u/pasacaglia

Cool
u/Qwitter

bone paper!

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16mm

function u(t) {

w=1920
z='translate'
l='lineTo'
d=960
e=d*.6
o=132
x.moveTo(d,e)
x[l](d-o,w)
x[l](d+o,w)
x.fill()
x[z](d,e)
x.rotate(Math.PI/10)
x[z](-d,-e)

Aug 23 2019 9:29 PM UTC

}// 140/140

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siemens star

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taupelink

remix of d/15504 by u/taupelink

function u(t) {

for(i=d=e=f=g=1e3;i--;x.fillRect(z+d*z,495-e*z,1,1))[d,e,f,g]=[(r=Math.random(z=400)*8|0)/2+C(d+r)/f,f-r%3+g*T(d^r)/f,r%5/3+f/4,(r&4)/9+g/6]

Aug 23 2019 4:16 PM UTC

}// 140/140

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d/15505

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taupelink

remix of d/15465 by u/taupelink

function u(t) {

for(i=d=e=f=g=1e3;i--;x.fillRect(120+d*z,z+e*z,1,1))[d,e,f,g]=[(r=Math.random(z=400)*9|0)/2+f*C(d+r),f-r%2+g*C(d^r),(r%2+f)/2,(r&4)/9+g/4]

Aug 23 2019 3:49 PM UTC

}// 138/140

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d/15504

u/taupelink

jumping on the "xor" bandwagon :)
u/katkip

looks like mountains #landscape
u/iverjo

#art
u/Qwitter

amazing!

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taupelink

remix of d/15489 by u/taupelink

function u(t) {

for(i=19;i--;x[s](400+S(t)*300+50*i,400,50,200))s=['clear','fill'][i%2]+'Rect'

Aug 23 2019 1:54 PM UTC

}// 78/140

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I think someone else did this version of #default recently, but I'm not finding it...putting it here for reference in case it hasn't already been done exactly this way

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tomxor

function u(t) {

eval(unescape(escape`瑼簨䄽䈽㠬愽戽〬潮步祵瀽攽㹡㴰Ɐ湫敹摯睮㵥㴾愽ㄹⵥ⹷桩捨⼲⤻景爨挮睩摴栽㘴ⱁⴽ愬䈭㵢Ⱪ㴳攳㭩ⴭ㭢㵚㰱㽢ⴴ攭㘺⸱⥸⹦楬汒散琨堽椦㘳ⱙ㵩㸾㘬娽ℨ䅞塼䉞天⴨吨⡙㵙⼳⭂⵴⨹⤫堯㍞堯㌭天㰵⤯㈬ㄩ`.replace(/u(..)/g,"$1%")))

Aug 23 2019 12:50 PM UTC

}// 140/140

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Don't Fall ! #game

u/tomxor

Use left + right... be fast
u/katkip

#genius ! Awesome! #compressed
u/aleamb

awesome! #interactive
u/sigveseb

woah, awesome idea!