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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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prplz

remix of d/9696 by u/katkip

function u(t) {

c.width|=0;x.font="3em n";for(i=63;i--;)for(j=36;j--;)x.fillText("◣◤◢◥"[Math.hypot(i,j)-t*8&3],i*30,j*30)

Sep 9 2018 1:26 AM UTC

}// 105/140

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u/katkip

Rlly XD
u/Xen

Math.hypot(i,j)-t*99&8

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katkip

remix of d/3194 by u/lurifax

function u(t) {

for(i=2e3;i--;x.fillStyle=R(T(t)*99,i/t,C(i)*128+128,.07))x.fillRect(960+S(p=i/314)*(d=99+T(C(t/i))*(S(i*9+t)*99)*C(t)*4),540+C(p)*d,9,9)

Sep 8 2018 7:54 PM UTC

}// 137/140

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Nuclear core

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Xen

remix of d/9713 by u/katkip

function u(t) {

for(c.width^=i=7e2;i--;)x.lineTo(300*(2+C(Θ=13.37*i)*S(Φ=Math.acos(1-1*i/(t*99%1e3)))*S(t)+C(Φ)*C(t)),300*(1+S(Θ)*S(Φ)));x.stroke()

Sep 8 2018 7:18 PM UTC

}// 131/140

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Absent_Data

u/lionleaf

I like the #glitchy look
u/katkip

i don't lol. the glitchy look makes the dweet looks broken
u/donbright

this needs one of those epilepsy warnings

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Xen

function u(t) {

for(Y=99,Z=i=2e3;i--;x.fillRect(-Y+i*Y%Z,-Y+i%Z,Y,Y))x.fillStyle=`hsla(${i*8+C(i%t)*Y},99%,50%,.07)`

Sep 8 2018 2:24 PM UTC

}// 100/140

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u/DataMeta

I do enjoy your adventures in hsl
u/donbright

this is super cool, unique look

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katkip

remix of d/3060 by u/cantelope

function u(t) {

eval(unescape(escape`景爨圽⡣⹷楤瑨㴱攳⤯㈬椽瑼〻椭ⴻ砮獴牯步⠩⥦潲⡪㴲〪瑼〻樭ⴻ砮汩湥呯⡗⭃⡰⤪匨焩⽓⡴⤪圬㈷㔫䌨焩⽚⩗⤩娽䌨瀽⸷㠵⨨椾㈿樺椩⵴⤪匨焽⸱㤪⡩㸸㽩⵪㩪⤩ⴲ;`.replace(/u(..)/g,"$1%")))

Sep 8 2018 2:07 PM UTC

}// 123/140

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9th dimension

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katkip

remix of d/9690 by u/donbright

function u(t) {

c.width^=0;for(i=0;i<999;i++){Φ=Math.acos(1-2*i/t/t);Θ=10.1664*i;x.lineTo(500*(2+C(Θ)*S(Φ)*S(t)+C(Φ)*C(t)),500*(1+S(Θ)*S(Φ)),9,9)}x.stroke()

Sep 8 2018 2:00 PM UTC

}// 140/140

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katkip

remix of d/9698 by u/katkip

function u(t) {

if(!t){c.width^=0;for(i=-1;i++<63;)for(j=0;j++<36;)x.font="2cm n",x.fillText(btoa`wµê`[7*Math.random()<<-00000000000000000000],i*50,j*50)}

Sep 8 2018 1:11 PM UTC

}// 140/140

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If you find the d w i t t e r crossword puzzle you win 1 dollar. #game

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katkip

function u(t) {

θ=frame*25%1980;x.fillStyle=`hsl(${C(t)+θ/30+t*10},99%,50%)`;x.fillRect(0,0,θ,θ)

Sep 8 2018 10:01 AM UTC

}// 80/140

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#tunnel Dwitter text expander test 6+

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f8f82804

function u(t) {

c.width^=r=a=>x.rotate(a);x[l='translate'](960,a=99);f=d=>d--&&x.fillRect(0,t%1*a,9,9)&x[l](0,a)&r(4)&f(d)&r(4)&f(d)&r(-8)&x[l](0,-a);f(t&7)

Sep 8 2018 5:59 AM UTC

}// 140/140

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Inspired by d/9635, but with a very different approach: no looping or explicit state #functional #golf

u/donbright

how???????
u/f8f82804

Looping is done by recursion and state is managed with the context's transform stack
u/Toby

Hi, could you explain what x[l='translate'] is accessing, please?

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cantelope

function u(t) {

eval(unescape(escape`儽⡰ⱱ⤽㹸⹦楬汒散琨眫堪瀯娪眭⡳㴱⬶〰⽚⽚⤯㈬栫太焯娪眭猯㈬猬猩㭦潲⡣⹷楤瑨簽眽椽⡨㴵〰⤪㈻椭ⴻ儨ㄬㄩⱑ⠭ㄬㄩⱑ⠭ㄬⴱ⤬儨ㄬⴱ⤩堽㐭⡩⽨⬱〰⤥㘬夽椯栭㈬瘽㜰⭓⡴⤪㘰簰ⱚ㵶⴨椫琪㘩┨瘭ㄩ`.replace(/u(..)/g,"$1%")))

Sep 8 2018 5:16 AM UTC

}// 140/140

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u/Xen

Yess!
u/iverjo

Interesting
u/donbright

dude ... so we are falling.. and then we are abt to hit ground... and then we are falling again...