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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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erin

remix of d/21513 by u/erin

function u(t) {

for(j=w=c.width|=N=60;j--;x.fillRect(X+4*(X*Y/8e3),Y+X/9*S(Y/N+X/N-7*t)+99,9,9))X=j%N*15,Y=j/N*15;x.fillRect(0,N,9,w)

Jan 31 2021 3:47 PM UTC

}// 117/140

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golfed a character and added some better movement - also some help from danny@hille.dk

u/Qwitter

Grand!
u/danny@hille.dk

Cool! how about a texture on it? for(j=w=c.width|=N=60,x.fillRect(68,N,18,w);j--;x.fillRect(X+4*(X*Y/8e3)+90,Y+X/9*S(Y/N+X/N-7*t)+70,s=(X|Y)%256*.06,s))X=j%N*15,Y=j/N*15
u/erin

love it
u/Qwitter

(CO|OL)

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smtsjhr

remix of d/21510 by u/danny@hille.dk

function u(t) {

c.width=50;for(i=2e3;i--;x.fillStyle=i>1e3?q=R(0,0,50,.4):q=R(0))x.fillRect((X=i%(48+S(t/10)))-3,Y=i/49|0,8,Math.hypot(X-24,Y-13)/20)

Jan 31 2021 7:02 AM UTC

}// 133/140

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Moonrise over the Lake

u/danny@hille.dk

Nice

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smtsjhr

remix of d/21499 by u/smtsjhr

function u(t) {

c.style.filter='invert()blur(5px)';for(c.width|=i=1e3;i--;){x.lineTo(960+400*S(i),540+400*C(i+t*T(t/10)))}x.stroke(); console.log(t)

Jan 31 2021 5:20 AM UTC

}// 132/140

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You won't believe your eyes when you watch this loop starts to wobble faster and faster!

u/smtsjhr

**FLASH / STROBE WARNING**

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erin

remix of d/21477 by u/Qwitter

function u(t) {

w=c.width=1920;N=70;for(j=3e3;j--;){X=(j%N)*15;Y=((j/N)^0)*15;x.fillRect(X+4*(X/120*Y/100)+90,Y+40*S(X/N-7*t)+55,9,9);}x.fillRect(N,4,9,w)

Jan 30 2021 10:56 PM UTC

}// 138/140

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flag, but i can't figure out how to have the left side not move, if anyone has ideas feel free to remix!

Show more comments…
u/erin

#flag
u/danny@hille.dk

just have your y movement be a function of x -> w=c.width=1920;N=70;for(j=3e3;j--;x.fillRect(X+4*(X/120*Y/100)+90,Y+X*.1*S(X/N-7*t)+55,9,9))X=(j%N)*15,Y=((j/N)^0)*15 x.fillRect(N,50,9,w)
u/danny@hille.dk

for(j=w=c.width|=N=60;j--;x.fillRect(X+4*(X*Y/8e3)+90,Y+X*.1*S(X/N-7*t)+55,9,9))X=j%N*15,Y=j/N*20;x.fillRect(N,50,9,w)
u/erin

o wow there we go
u/erin

room for color too
u/Qwitter

nice!

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Qwitter

remix of d/21267 by u/Xen

function u(t) {

eval(unescape(escape`𚅴🤮𜄲𚕼𯄨𨴮𭵩𩅴𪄽𞔬𨴮𪅥𪕧𪅴🔹𚔻𮄮𩥩𫅬𤵴𮕬𩔽𙵨𬵬𚄧𚵴𚤶𜄫𙴬𞔹𙔬𝔰𙔩𙴻𪕦𚅴𙔮𜔼𛤰𜤩𮵸𛥦𪕬𫅒𩕣𭄨𜤬𜤬𜔬𜔩𞵸𛥧𫅯𨥡𫅃𫵭𬅯𬵩𭅥𣵰𩕲𨕴𪕯𫤽𙵸𫵲𙴻𥄽𦴭𜔬𜔬𜄬𜄬𛔱𛄱𧔻𩥯𬤨𪤽𝄻𪤭𛔻𚕸𛥤𬥡𭵉𫕡𩵥𚅣𛅔𦵪𚴲𧔬𥅛𪥝𚕽`.replace(/u../g,'')))

Jan 30 2021 9:10 PM UTC

}// 139/140

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d8o- Previously Imprecisely Titled -o8b

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andrea270872

function u(t) {

f=(X,Y,a)=>{for(i=1;i<10;i+=.2){K=5*(10-i);x.fillRect(X+(250-a.x)/i-K,Y+(180-a.y)/i-K,2*K,2*K)}}
onmousemove=e=>f(800,450,e,c.width|=0)

Jan 30 2021 6:46 PM UTC

}// 135/140

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mouse-controlled tower with parallax #interactive #parallax

u/katkip

nice
u/tomxor

nice
u/andrea270872

Thanks :) I wanted to have 2 towers but I ran out of characters :D
u/danny@hille.dk

cool

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danny@hille.dk

function u(t) {

w=c.width=58;for(i=2e3;i--;)x.fillRect(X=i%w,Y=i/w|0,1,Math.hypot(X-29,Y-16)/16)

Jan 30 2021 6:34 PM UTC

}// 80/140

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Testing some stuff - plotting inverse distance to center

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katkip

function u(t) {

t||(X=Y=1)
for(i=399;i--;)X+=S(Y-X/233)/2+Y*X/9,Y+=C(X+.4),X+=S(X*Y-t/99)*C(X*3-Y*2+3.4+t)/25,x.fillRect(760+X*200-t,940+Y*90-t*499,6,6)

Jan 30 2021 6:22 PM UTC

}// 136/140

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house

u/Qwitter

Cool
u/tomxor

Wow! also looks like a #bandstand

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veubeke

function u(t) {

t?x.font=t+'cm"':x.fillRect(0,0,$=1920,_=1080)
x.drawImage(c,x[g='globalAlpha']=.4,0,$,_,C(t)*t/3,S(t)*t/5,$,_)
x.fillText('🍬',x[g]=530,720)

Jan 30 2021 2:52 PM UTC

}// 140/140

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ghost #candy

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veubeke

function u(t) {

t?c.width^=0:B=[]
for(i=9;i--;)for(X=(4+i+S(t)*3)*100,B[$=i*50+X/192*5|0]=(B[$]||0)+1,k=50;k--;)x.fillRect(X+k,600,1,~((B[i*50+k]||0)/t*40))

Jan 30 2021 1:30 PM UTC

}// 140/140

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stats #default

u/veubeke

Default dweet but replace the squares with a histogram of positions that each bar had.