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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Current theme challenge: #Opposites

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KilledByAPixel

remix of d/14103 by u/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𙁻𜡽𩑭𨀻𥀽𭀪𪠯𝐬𪠫𚰼𝰻𚑦𫱲𚁩🐭𝐰𛑔𚠵𙐱𚠳𜀬𤐽𥀪𝐥𜠾𜐻𚁩𚰽𜰰𚐼𝐰𞱸𦱦𧐨𪠪𜠲𞐬𝐴𜀭𪐬𞐹𛀲𝐩𚑸𦱳𧐽𤠨𤐽𦠪𘑑𛁑𛁑𛁃𚁩𛰳𜐮𞀳𚐩`.replace(/u../g,'')))

May 23 2019 5:44 PM UTC

}// 138/140

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Gabor Patches #OpticalIllusion

u/magna

Nice!
u/SMON

+1 for turtle
u/KilledByAPixel

Inspired by this video... https://www.youtube.com/watch?v=Jri0del_6t4 This is all I could fit, maybe someone can take it farther.
u/joeytwiddle

I really like the square in that video
u/KilledByAPixel

#illusion

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pythech

remix of d/8455 by u/pythech

function u(t) {

with(x)for(i=200;i--;fillRect(i*9,!fillText("👤",i%9*200,i*30),9,2e3))fillStyle=`hsl(209,33%,${Math.abs((i+t*50)%62-31)*2+9}%)`,font="9em x"

Jun 6 2018 8:50 PM UTC

}// 139/140

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works with apple emojis only

u/pythech

optical illusion, stare at it for a few seconds
u/DataMeta

cool!
u/iverjo

#opticalillusion

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magna

remix of d/3674 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(c=(X+1&30|Y+4&24&&Y+1&30|X+4&24?(X^Y)&32?4:5:X+6&32?3:7)/9*w)

Dec 20 2017 10:47 PM UTC

}// 137/140

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u/iverjo

Love this optical illusion
u/sandromiccoli

delicious
u/magna

#opticalillusion

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iverjo

function u(t) {

for(i=13;i--;)k=i!=12,x.beginPath(),x.arc(960+400*k*C(j=i*.523),540+400*S(j),9+50*k,0,7),x.fillStyle=R(a=255*k,a*(i==(t*9%12|0)),a),x.fill()

Jan 28 2017 6:59 PM UTC

}// 140/140

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Optical illusion: Look at the center dot for at least 5 seconds. What you should see is that the missing dot becomes light green. Keep staring at the same point for another 10-30 seconds, and you might notice that some pink dots will "disappear". This is due to cone fatigue in your eyes.

u/iverjo

Two characters can be shaved by replacing k=i!=12 with k=!!i
u/lionleaf

Haha, amazing!
u/iverjo

#opticalillusion

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ciaccodavide

remix of d/20865 by u/ciaccodavide

function u(t) {

for(c.width|=i=192;i--;)x[s='fillStyle']=`hsl(0,0%,${i*.6}%`,x.fillRect(i*10,0,192,2e3)
x[s]=`grey`
x.arc(960+S(t)*500,540,400,0,7)
x.fill()

Nov 30 2020 11:59 AM UTC

}// 140/140

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Same Grey Circle

u/ciaccodavide

#illusion
u/DataMeta

fun. we explored this #opticalillusion differently :) d/15843 #gradient
u/joeytwiddle

To add a second ball: x.arc(960-S(t)*500,540,300,0,7)

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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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KilledByAPixel

function u(t) {

c.width+=0;for(i=999;i--;)N=150*S(t+i/2),Y=3*N,X=800*S(i/3),x.beginPath(),x.fillStyle=R(99+N,0,99*S(i)),x.arc(960+X,540+Y,40,0,7),x.fill()

Apr 11 2019 11:12 PM UTC

}// 138/140

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Weird shapes.

u/KilledByAPixel

Here it is in the ADE... http://www.3d2k.com/js/dweetgen/?a0=1&a1…
u/KilledByAPixel

Cant figure out if this is rotating around the vertical or horizontal axis.
u/joeytwiddle

If you can't see both rotations, Slacklustre's GIF may help: https://www.reddit.com/r/illusionporn/commen…
u/KilledByAPixel

#illusion #opticalillusion

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metamero

remix of d/11217 by u/metamero

function u(t) {

eval(unescape(escape`景爨稽㜲Ᵽ⹷楤瑨簽欽〻欼㐴㤻⬫欩椽款㸴ⱪ㵫☱㔬瀽稪椬焽稪樭稬⠨椫権┲㽸⹲散琨瀬焬稬稩㨰⤬砮牥捴⡰⬴ⱱ⬴⭺⩃⡴⤪⨨欥㜩ⰲ〬㈰⤬砮牥捴⡰⬴㠬焫㐸⭺⩓⡴⤪⨨欥㔩ⰲ〬㈰⤻砮晩汬⠧敶敮潤搧⤻`.replace(/u(..)/g,"$1%")))

Nov 30 2018 9:17 PM UTC

}// 138/140

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#Trippy #Illusion by [metâmero]

u/metamero

for(z=72,c.width|=k=0;k<449;++k)i=k>>4,j=k&15,p=z*i,q=z*j-z,((i+j)%2?x.rect(p,q,z,z):0),x.rect(p+4,q+4+z*C(t)**(k%7),20,20),x.rect(p+48,q+48+z*S(t)**(k%5),20,20);x.fill('evenodd');
u/iverjo

#opticalillusion

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ciaccodavide

function u(t) {

eval(unescape(escape`𭁼𯁸𛡦𪑬𫁒𩑣𭀨𜀬𜀬𭰽𜡥𜰬𭰬𬠽𣑡𭁨𛡲𨑮𩁯𫐩𒡦𫱲𚁮🐳𩐳𞱘👲𚀩𚡷𛁙👲𚀩𚡷𛁤👍𨑴𪀮𪁹𬁯𭀨𦀭𞐶𜀬𦐭𝐴𜀩𛰹𛁮𛐭𞰩𮀮𩡩𫁬𤡥𨱴𚁘𛁙𛀴𛁴🀱𛁸𛡦𪑬𫁓𭁹𫁥👒𚀨𩀼𜰰𚐪𭰬𜀬𚁤🠳𝠩𚡷𚐩`.replace(/u../g,'')))

Dec 9 2021 10:46 AM UTC

}// 121/140

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#illusion #opticalillusion

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kooga

function u(t) {

a=5;b=1+parseInt(t*2,10);d=100;
c.width=a*d;
for(i=0;i<120;i+=1){
for(j=0;j<120;j+=1){
if(i*j%b)x.fillRect(i*a,j*a,a,a)
}
}

Oct 6 2019 3:19 AM UTC

}// 123/140

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divibility!

u/metamero

incidental #opticalillusion #ScintillatingGridIllusion

dwitter.net | #OpticalIllusion