Dweets awesomed by u/Cloud

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: #Opposites

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KilledByAPixel

function u(t) {

Y=c.height|=0
p=Math.PI/2
for(d=1;Y>390;d=-d,Y-=2*o)for(j=5;j--;x.arc(960,Y-o,170,q=d*(t+j*p),q))o=170*C((m=(d*t%p+p)%p)>p/2?p-m:m)
x.fill()

Jul 21 2019 1:08 AM UTC

}// 140/140

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Walking Squares

u/KilledByAPixel

https://www.reddit.com/r/loadingicon/comment…

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pavel

function u(t) {

c.width|=f=k=>(1-3/(4+9e9**(i-.5-t%4)))*w*(-2/(i+k&3)|1)-w/2
for(i=5;i--;x.rect(960+f(2),540+f(1),w,w))w=2**(i?7+t/4%1:12)
x.fill`evenodd`

Jul 18 2019 4:05 AM UTC

}// 138/140

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St[a]ck (https://www.reddit.com/r/perfectloops/commen…)

u/KilledByAPixel

👍
u/Xen

love it
u/metamero

omg so satisfying
u/iverjo

#perfectloop
u/katkip

Awesome!

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KilledByAPixel

function u(t) {

with(x)for(fillStyle="#0001",fillRect(0,0,2e3,2e3),strokeStyle="#FFF",beginPath(i=lineWidth=6);i-=2;stroke())arc(960,540,500,b=t*120+i,b+7)

Jul 16 2019 8:44 PM UTC

}// 139/140

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Code Sketch based on https://www.reddit.com/r/loadingicon/comment…

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New_Core

function u(t) {

for(c.width|=i=4;i--;x.fillText("ZOOM|DWITTER|BETTER|A".split('|')[0|i],960,540+Z*12))Z=5**T(i*.8+t/6),x.textAlign="center",x.font=Z+"cm'"

Jun 28 2019 9:36 AM UTC

}// 139/140

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u/Xen

nice
u/katkip

nice

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magna

remix of d/14539 by u/KilledByAPixel

function u(t) {

with(x)font="70em impact",fillText("GLITCH",0,999,1920),(d=getImageData(0,0,2e3,2e3)).data.copyWithin(Math.random()*4e7),putImageData(d,0,0)

Jun 13 2019 2:47 AM UTC

}// 140/140

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GLITCH

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simonmkwii

remix of d/13488 by u/pavel

function u(t) {

for(x.fillRect(0,0,i=640,i);z=--i**.3;x.fillStyle=R(0,500/--z))x.setTransform(s=20/z,0,0,s,0,0),x.fillText(';',i%z*99,t++%z*60)

Jun 9 2019 6:59 AM UTC

}// 127/140

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;

u/katkip

um ok
u/lionleaf

#matrix :) Nice one
u/Xen

oooo

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veubeke

function u(t) {

for(T=5184;T--;x.fillRect(X*20,Y*20,20,20))X=T%96,Y=T/96|0,x.fillStyle=`hsl(${(C(X/4)+S(Y/4)+t)*40+(Math.atan2(Y-27,X-48)+t)*114.5},90%,50%`

Jun 7 2019 5:45 PM UTC

}// 140/140

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u/13thptr

#plasma

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pavel

function u(t) {

for(i=c.width|=0;r=S(k=--i>>6)**2;x[i%64?'fillRect':'clearRect'](7-k/4,0,r,r))x.setTransform(99,0,0,42,960,32*k+(i%64*r||3)),x.rotate(3*t+k)

Jun 7 2019 6:27 AM UTC

}// 140/140

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#box #tornado #d3

u/aleamb

amazing!
u/donbright

how the....
u/KilledByAPixel

❒
u/vain

hard to believe... top!

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katkip

remix of d/14469 by u/katkip

function u(t) {

c.width*=1;x.lineWidth=9;for(i=211;i--;)x.beginPath(),r=S(t+i/59+S(t+i/29))+1.1,x.arc(960,140,10+i*4,r,r+1),x.stroke()

Jun 6 2019 2:46 PM UTC

}// 118/140

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u/joeytwiddle

Spooky

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metamero

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁩🐭𜐬𩡯𫡴🐢𜰲𜁰𮀠𠑲𪑡𫀠𠡬𨑣𪰢𞱩𚰫🀹𞐻𭀿𜀺𪐦𙡩🀴🱩𧠳🱦𪑬𫁔𩑸𭀨𪑞𜐿𘡹𩑬𫁯𭰢𞠢𪑬𫁵𬱯𬡹𘠬𞐹𛁩𚠴𜠰𚐺𬡯𭁡𭁥𚀮𝰸𝐩𞡦𪑬𫁒𩑣𭀨𪐪𜠳𛐹𞐬𛐲𩐳𛁩🰱𜰺𜡥𜰬𝁥𜰩𚑦𪑬𫁓𭁹𫁥👩🱩🠳🰢𘱆𡡆𘠺𘠣𝐵𝐢𞠢𘰰𜁆𘠻`.replace(/u../g,'')))

Jun 5 2019 9:02 PM UTC

}// 139/140

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"Illusory yellow distortion" by Akiyoshi Kitaoka

u/metamero

"If observers approach or move away from the image fixating at the center, then the words appear to be distorted."
u/metamero

uncompressed: with(x)for(i=-1,font="320px Arial Black";i++<99;t?0:i&&i<4?i^3?fillText(i^1?"yellow":"illusory",99,i*420):rotate(.785):fillRect(i*23-99,-2e3,i?13:2e3,4e3))fillStyle=i?i>3?"#FFF":"#555":"#00F";
u/metamero

#illusion #opticalillusion
u/metamero

d/14455 animated version

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