Top #OpticalIllusion dweets

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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anthonylewis

remix of d/7608 by u/anthonylewis

function u(t) {

for(c.width|=i=19;i--;)for(j=10;j--;)
Math.random()>.99?
x.fillRect(i*100,j*100,75,75):
x.strokeRect(i*100,j*100,75,75)

May 4 2018 4:54 AM UTC

}// 119/140

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Blinking Lights

u/iverjo

Look in full screen, and you might start seeing circles near the square corners! #opticalillusion

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magna

remix of d/3676 by u/magna

function u(t) {

w=c.width=384;for(i=w*w;i--;x.fillRect(X,Y,1,1))X=i%w,Y=i/w|0,x.fillStyle=R(X,(X+1&30|Y+4&24&&Y+1&30|X+4&24?(X^Y)&32?4:5:X+Y+6&32?3:7)/9*w)

Dec 21 2017 2:49 AM UTC

}// 139/140

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u/iverjo

#opticalillusion

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Tekmap

remix of d/22995 by u/Tekmap

function u(t) {

c.style.filter=`blur(1vw)contrast(50`
for(c.width|=z=i=19;i--;)for(j=2*z;j--;)x.fillRect(99+i*99+S(t-j/69*z)*300,500+j*z,50,z)

Jun 25 2021 2:10 PM UTC

}// 126/140

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Herringbone

u/DataMeta

#opticalillusion

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katkip

function u(t) {

q=4;for(i=212;i--;)x.beginPath(),x.fillStyle=['#DD1',R(),"#06D","#fff"][i%4],x.arc(260+C(i*q)*i+(t|0)*600,540+S(i*q)*i*2,i,0,7),x.fill();

Jun 16 2019 7:28 AM UTC

}// 137/140

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Move your eyes randomly to see them move #opticalillusion #illusion

u/joeytwiddle

I was not here

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KilledByAPixel

remix of d/14618 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`𩠽𩡲𨑭𩐻𭱩𭁨𚁸𚑦𫱲𚁢𩑧𪑮𤁡𭁨𚁦𪑬𫁓𭁹𫁥🐢𘱃𠱃𘠩𛁦𪑬𫀨𨑲𨰨𩠪𜠷𜀭𝠵𞐬𝐴𜀫𜰵𜀪𤰨𩠪𜐮𝠩𛀱𜰰𛀰𛀷𚐩𛁩🐹𞐻𪐭𛐻𭀦𙡩𙐳𘐽𩠥𜱼𯁦𪑬𫁒𩑣𭀨𩠪𜠷𜀭𞀰𜀬𪐪𜐶𛁴🰴𞀰𞠴𩐳𛀱𝠩𚑦𪑬𫁓𭁹𫁥👩𙐳🱩𙐳🐽𜐿𘠣𜀰𡠢𞠢𘰰𡠰𘠺𘠣𡠰𜀢`.replace(/u../g,'')))

Jun 15 2019 7:07 PM UTC

}// 140/140

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3 Color Munker Illusion ~ All circles are same shade of grey #OpticalIllusion

u/joeytwiddle

fillStyle='#'+'00F00'.substr(i%3,3) although substr is deprecated
u/joeytwiddle

I think this one works better than the one on Twitter!
u/katkip

#illusion

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metamero

remix of d/14453 by u/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𜐿𘡭𨑧𩑮𭁡𘠺𘡩𫁬𭑳𫱲𮐢𛀹𞐬𪐪𝀲𜀩𞡲𫱴𨑴𩐨𛠷𞀵𚐺𩡩𫁬𤡥𨱴𚁩𚠲𞐭𞐹𛀭𜡥𜰬𪐿𜐹𞠲𩐳𛀴𩐳𚐩𩡩𫁬𤱴𮑬𩐽𪐿𪐾𜰿𘠣𜀰𡠢𞠢𘰹𞐹𘠺𘠣𜁆𡠢`.replace(/u../g,'')))

Jun 5 2019 11:30 PM UTC

}// 139/140

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#opticalillusion variation I found myself

u/metamero

#illusion

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KilledByAPixel

function u(t) {

eval(unescape(escape`𮁛𬰽𙱦𪑬𫁓𭁹𫁥𙱝🐢𘰸𞀸𘠻𮁛𩠽𙱦𪑬𫁒𩑣𭀧𧐨𪠽𜀬𜀬𦠽𜡥𜰬𦠩𒡦𫱲𚁸𛡦𪑬𭁥𬠽𨁢𫁵𬠨𙁻𜡽𩑭𨀻𪠫𚰼𝀻𚑦𫱲𚁩🐭𝐰𛑴𚠵𙐱𚠳𜀬𤐽𭀪𝐥𜠾𜐻𚁩𚰽𜰰𚐼𝐰𞱸𦱦𧐨𞐶𜀫𤰨𭀩𚠷𜀰𛁪𚠲𜐹𛑩𛀹𞐬𜠵𚐩𮁛𬱝👒𚁑👚𚠡𤐬𤐬𤐬𠰨𪐯𜰱𛠸𜰩𚐻`.replace(/u../g,'')))

May 23 2019 5:30 PM UTC

}// 139/140

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Curveball #OpticalIllusion

u/Xen

love it

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f8f82804

function u(t) {

c.width^=0;with(x){lineWidth=6;translate(960,540);rotate(42*t);fill(arc(0,0,440,0,3));for(i=30;i--;stroke())beginPath(),arc(0,0,15*i,i,i+2)}

Aug 23 2018 11:01 PM UTC

}// 140/140

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Benham's top #illusion -- https://en.wikipedia.org/wiki/Benham%27s_top

u/f8f82804

#opticalillusion

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pythech

function u(t) {

with(x)for(i=200;i--;fillRect(i*9,!fillText("😁",i%9*200,i*30),9,2e3))fillStyle=`hsl(39,80%,${Math.abs((i+t*60)%62-31)*2.8}%)`,font="5em x"

Jun 6 2018 8:09 PM UTC

}// 138/140

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based on "swimming fish optical illusion"

u/pythech

works with Apple emojis, probably doesn't work with other devices
u/S.T.L.K.R.

STARE AT IT FOR 10 SECONDS
u/iverjo

#opticalillusion

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DataMeta

function u(t) {

c.style.background=R(g=S(t*1.5)*255,g,g);if(t<3)for(i=1920;i--;)
x.fillStyle=R(l=i/7.5,l,l),x.fillRect(i,540-C(t)*i/5,13,13)

Sep 28 2019 4:17 PM UTC

}// 124/140

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Had this laying around. Demonstrates the #illusion in d/15823. The triangle's #gradient remains unchanged.

u/DataMeta

The center of the base of the triangle doesn't exhibit the illusion strongly since there is a constant reference color near it and it is far from the changing background.
u/iverjo

#opticalillusion

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