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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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KilledByAPixel

remix of d/23088 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`󩭯󬬨󭼽󨼮󭽩󩍴󪌦󟝪󟜱󜌳󝬸󞽪󞼩󤼨󚍘󟝪󙝷󛼶󝌪󚼫󥌭󥌩󛼹󧬨󚍙󟝴󚬶󜌭󪬯󞍥󜼪󥌫󥌯󜬩󛼹󯌰󚜪󚬳󚜪󜼰󚼷󜌾󥍼󯍸󛭦󪝬󫍒󩝣󭌨󪬥󭼬󛜭󪬾󟬷󛌱󛌱󛍸󛭦󪝬󫍓󭍹󫍥󟝒󚍶󟜨󚍌󟝔󟬹󜌩󟼴󝜵󞬲󝜵󛝔󚭔󛼲󜌩󚽓󚍘󙭙󧭔󚜪󚌱󞜫󣌪󜬵󝜩󛍌󟽶󛼳󞭶󛌡󣌪󭬩󛍔󟜴󜌩`.replace(/u../g,'')))

Jun 11 2021 4:07 AM UTC

}// 140/140

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Lava Cave ⛏️

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u/tomxor

Very nice, getting some old game texture vibes. I've been wanting to try out some texturing on this stuff.
u/Irratix

if you told me this was a low res video of a cave in minecraft i would believe it
u/KilledByAPixel

thanks! i was going for #minecraft
u/magna

Perfect!
u/aleamb

amazing!
u/iverjo

Nice. Definitely got minecraft vibes

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tomxor

remix of d/17533 by u/tomxor

function u(t) {

u&=R=R|0?0:c.width=w=256
for(T=S,S=C,C=T,i=7e4;j=--i/w|i%w*w;u+=~S[i+5]-~S[i-6])R?x.fillRect(i%w,j%w,1,C[j]=u>33&u<59?u<46|C[j]:j&!t):C[j]=u

Jun 2 2021 3:22 PM UTC

}// 140/140

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Larger #LargerThanLife #Automata Bugs Rule v2

u/tomxor

4x the pixels 2x the speed
u/davidsover

...of Fallout 4
u/Xen

noice
u/donbright

!!!

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KilledByAPixel

remix of d/22480 by u/KilledByAPixel

function u(t) {

with(x)for(i=h=c.height|=0;i--;fill(arc(X=i*(i+t)%3e3-600,C(i)*h,i?h/i:1e4,0,7)))beginPath(globalCompositeOperation='xor')

Apr 14 2021 11:59 PM UTC

}// 122/140

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Backspace 🌒

u/sigveseb

noice!

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tomxor

remix of d/19550 by u/tomxor

function u(t) {

for(w=c.width&=i=8320;i--;u[i]=t?p<w?r%.7*(p+u[i-w]+u[i-w+1])&w-1:p:(~r-14&16)<<r*.6)p=u[i],x.fillRect(i%w,Y=68-i/w,1,p**.4/7-Y/w),r=i*t^i&Y

Aug 19 2020 11:53 PM UTC

}// 140/140

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#castle #fire

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u/tomxor

Took some hints from d/11257 for the fire, but made it more minimal. Thanks to u/KilledByAPixel for the c.width&= trick that allowed to fit some nicer gradient and fire effect.
u/jellyedwards

That's incredible! How does the c.width&= trick work?
u/KilledByAPixel

c.width is 1920, 1920 & 8320 is 128, this way you don't need to write 128 for the width
u/tomxor

This is a bit verbose, but I found it easier to understand in binary: 1920 == 0b0000011110000000; 8320 == (8192 | 128); 8320 == 0b0010000010000000; (1920 & 8320) == 0b0000000010000000. In other words i needs to be roughly 8e3 to fill the screen, 8192 (the 14th bit) is not in 1920 so we can use it without affecting w. w needs to be quite small, 128 (the 8th bit) is the lowest bit available in 1920, which is why it's produced with AND.
u/magna

This is nuts.
u/magna

Please do a write-up on this Dweet.
u/jellyedwards

Thanks for the explanation
u/aleamb

absolutly amazing
u/DataMeta

+1 to magna's request
u/joeytwiddle

Pretty great!
u/13thptr

What u/magna said.
u/Xen

Sexy business right here
u/tomxor

Ok why not, I will do writeup, but need to make blog first :P I will post here and discord when done.

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pavel

function u(t) {

f=(X,y,r=80,a=0)=>r>6&&[0,.4,-.4,0].map(o=>o?f(X+r*S(a)*C(X*y/4e4+t),y-r*C(a),r*.8,a+o):x.lineTo(X,y));c.width=640;f(320,360);x.stroke()

Apr 24 2020 8:23 AM UTC

}// 136/140

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Rotating #tree #fractal

u/pavel

Inspired by https://twitter.com/ntsutae/status/125356447…
u/neimad

You should do a twitch channel. amazing.
u/ntsutae

I’m honored.
u/pavel

u/ntsutae :O I love your stuff on twitter! 素晴らしですよ
u/vain

Great 3D version !!

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yonatan

function u(t) {

t*=44
for(c.width|=i=99;i--;x.fillRect(w+z*(y%8-2),y%4*k,3,-q))z=5e3/(i-t%1),x.fillRect(w=960-z+(S((y=t+i|0)/9)-C(t/9))*z,k=540+z,q=z*2,3)

Dec 25 2019 7:40 PM UTC

}// 138/140

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https://twitter.com/ntsutae/status/120935675…

u/katkip

amazing! #street #road
u/ivylab

Really nice, howwww

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KilledByAPixel

remix of d/15203 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡦楬汒散琨〬〬椽䘽挮睩摴栽㔰〬䘩㭩ⴭ㭳桡摯睂汵爽㈹⥣汥慲剥捴⠨匨椩⨱改⵴⩩⼹⤥䘬椪㤥䘬ㄬㄩⱳ桡摯睃潬潲㵦楬汓瑹汥㵒⡆ⰲ㔵⵩⨳⤬慲挨㈵〬ㄴ〬㤹ⱱ㵓⡩⭴⼴攳⤪ㅥ㌬焩Ⱪ┹㥼籦楬氨⤻`.replace(/u(..)/g,"$1%")))

Jul 30 2019 8:18 PM UTC

}// 140/140

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☼ Sun Spots ☼

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u/katkip

Wow
u/aleamb

amazing!
u/aleamb

#universe #sun #landscape #shading
u/artfarnaa

#glow #contrast #unusual
u/magna

Wow!
u/Qwitter

perfect

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pavel

function u(t) {

eval(unescape(escape`𩡯𬠨𪐽𨰮𭱩𩁴𪁼👦👮🐾𚀨𪐯𜰪𚡮𯀰𚐥𜰭𜐩𚠨𞐸𚰹𞀯𚀱𚰱𩐹𚠪𤰨𭀭𫠭𜰩𚐩𞱩𛐭𞱸𛡦𪑬𫁒𩑣𭀨𜀬𜀬𞐹𛀹𞐩𚑸𛡦𪑬𫁓𭁹𫁥👒𚁳👩𙐳𛁳𚰱🀼𝠩𛁸𛡳𩑴𥁲𨑮𬱦𫱲𫐨𬰭𜑼𜐬𨐽𛐮𝐬𛑳𙐲𛁾𬰦𜑼𯁡𛀹𝠰𛑦𚀱𚐫𩠨𜠩𛀵𝀰𛑦𚀱𚐯𜠭𩠨𜠩𛰲𚱦𚀳𚐩`.replace(/u../g,'')))

Jul 8 2019 2:13 AM UTC

}// 140/140

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Divide (https://www.reddit.com/r/perfectloops/commen…)

u/pavel

192 for(i=c.width|=f=n=>((i/3**n|0)%3-1)*(98+98/(1+1e9**S(t-n-3)));i--;x.fillRect(0,0,99,99))x.fillStyle=R(s=i%3,s+1<<6),x.setTransform(s-1|1,a=-.5,-s%2,~s&1||a,960-f(1)+f(2),540-f(1)/2-f(2)/2+f(3))
u/pavel

194**
u/aleamb

wow!
u/katkip

nice #compressed

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tomxor

function u(t) {

eval(unescape(escape`眽㤰Ⱪ㵬㵷⩷⼵ⱴ㴱⭴⩴⼱㈻景爨砮晩汬剥捴⠰ⰰⱣ⹷楤瑨㵷⨲ⱷ⨲⤻椭ⴻ砮晩汬剥捴⡘⨶ⱙ⨶ⰱ⭋ⰵ⤩堽椥眯㌬夽椯眬䘽琭椯氬䬽ㄭ䘥ㄬ䬪㴨奞堭繆⤯㈷┱⭋⨪㠬砮晩汬却祬攽恨獬⠤筩⨱㈰紬㤹┬⑻䬪㤹紥⥠`.replace(/u(..)/g,"$1%")))

Feb 14 2019 12:46 AM UTC

}// 140/140

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Trinitron #crt #scanline #fractal

u/tomxor

Finally resorted to UTF8. This is a reasonably accurate slow motion aperture grille scanline animation... Although if run very slow you will see it's not simulating 3 electron beams. t=fps (scanline) w=width (subpixels) the later must be a multiple of 3 and 5. Use X, Y and floored F to plugin your own fractal!
u/tomxor

Uncompressed: w=90,i=l=w*w/5,t=1+t*t/12; for(x.fillRect(0,0,c.width=w*2,w*2);i--;x.fillRect(X*6,Y*6,1+K,5)) X=i%w/3,Y=i/w|0,F=t-i/l,K=1-F%1,K*=(Y^X-~F)/27%1+K**8, x.fillStyle=hsl(${i*120},99%,${K*99}%)
u/sigveseb

Kick-ass!
u/C010011012

bypassing the character limit I see using unicode escapements and regex u r very clever

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pavel

function u(t) {

for(c.width=480,x.rotate(X=Y=q=.785),r=6;r--;X+=f(0),Y+=f(2))R=1<<r,x.strokeRect(X+265-R,Y-74-R,2*R,2*R),f=n=>R*Math.atan(16*C(t+(n-r%2)*q))

Dec 23 2018 9:53 AM UTC

}// 140/140

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Squares #beesandbombs

u/katkip

So smooth!