Top #Illusion 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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katkip

function u(t) {

t||(a=b=0);for(i=99;i--;)a+=C(b+t*t)/99,b+=C(a+t*t)/99,x.fillRect(i*(80+t*C(t))+a*5-1e3,b*5,5,5)

Feb 15 2019 12:29 PM UTC

}// 96/140

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Pulse waves - attractor draws sqare wave, #waves

u/katkip

#illusion btw

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katkip

remix of d/11022 by u/katkip

function u(t) {

x.arc(960,540,150*t,0,7);x.stroke()

Nov 17 2018 5:19 PM UTC

}// 35/140

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Longer than short art #illusion if you watch the center

u/jylikangas

You can save one byte like this: x.arc(960,540,150*t,!x.stroke(),7)
u/katkip

true

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katkip

function u(t) {

c.width*=1;
for(i=0;i<400;i++)x.fillRect(i*(5+t/99),0,S(t*i/99)*3,2000)
for(i=0;i<400;i++)x.fillRect(0,i*(5+t/100),2000,S(t*i/99)*3)

Sep 21 2018 11:28 AM UTC

}// 132/140

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Black and white illusion. Don't see the #illusion ? Fullscreen

u/metamero

#ScintillatingGridIllusion

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katkip

remix of d/9553 by u/katkip

function u(t) {

c.width=100;p=0;for(i=0;i<100;i++)for(j=0;j<100;j++)x.fillStyle=`hsl(${C(i/0.3+t)<S(j/0.3+t)?100:200},99%,50%)`,x.fillRect(i,j,1,1),p++

Aug 31 2018 10:04 AM UTC

}// 135/140

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#illusion you don't know if it is changing or not

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katkip

function u(t) {

f=(a,b)=>C(b)*S(a)>0?f(-a/3,b):S(a)+C(b)<0
for(i=4999;i--;){a=(r=Math.random)()*1920,b=r()*1080;if(f(a/49,b/49))x.fillRect(a,b,3,3)}

Dec 30 2019 7:40 PM UTC

}// 132/140

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Go this way! #recursion

u/katkip

#illusion

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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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katkip

remix of d/12171 by u/katkip

function u(t) {

eval(unescape(escape`挮睩摴株㴱㭸⹦楬汒散琨〬㐰〬㉥㌬㈰〩㭦潲⡩㴱㭩⬫㰹㬩砮晩汬剥捴⠲〰⭩⨱〰⭓⡴⤪㌰〬〬㔰ⰲ攳⤻景爨椽ㄻ椫⬼㤻⥸⹣汥慲剥捴⠲〰⭩⨱〰⭓⡴⬮ㄷ⤪㌰〬㐰〬㔰ⰲ〰⤻`.replace(/u(..)/g,"$1%")))

Feb 5 2019 6:05 PM UTC

}// 125/140

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#default #illusion

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metamero

remix of d/11514 by u/metamero

function u(t) {

eval(unescape(escape`䴽琿䴮浡瀨⡭Ⱬ⤽㹸⹦楬汒散琨津渪測樽洭津測ㄵⰱ㔬䤽愽㸨洫愫ㄴ㐩┱㐴⥼欿ⴭ欿䵛歝㩈㵶┲㽉⡶⩮⤺䤨瘫ㄩ╮⭪㩇㵭Ᵽ⹷楤瑨㴲㔶⤺孆偓㵮㴱㘬瘽〬潮步祤潷渽攽㹶㵥⹷桩捨ⴳ㥝㭇幈籼䴮畮獨楦琨䤨䜫㤩⤻`.replace(/u(..)/g,"$1%")))

Dec 23 2018 9:11 PM UTC

}// 140/140

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#snake #game : play with arrows : best on fullscreen : try to fill ;)

u/metamero

scintillating grid #illusion happens when screen is filled

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