New #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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Current theme challenge: #Opposites

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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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metamero

remix of d/14452 by u/metamero

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱮𭀽𘠳𝠰𬁸𘁁𬡩𨑬𘁂𫁡𨱫𘠬𩡩𫁬𤱴𮑬𩐽𚁩👦𬡡𫑥𛐱𚐿𪐾𜰿𘠣𡡆𡠢𞠢𘰵𝐵𘠺𘠣𜀰𡠢𛁩𙠦𪐼𝀿𪑞𜰿𩡩𫁬𥁥𮁴𚁩𧠱🰢𮑥𫁬𫱷𘠺𘡩𫁬𭑳𫱲𮐢𛀹𞐬𪐪𝀲𜀩𞡲𫱴𨑴𩐨𛠸𚐺𩡩𫁬𤡥𨱴𚁩𚠱𞐭𝠹𛀭𜡥𜰬𪐿𜐳𞠳𩐳𛀴𩐳𚐻𫱮𨱬𪑣𪰽𬡥𬱥𭀻`.replace(/u../g,'')))

Jun 5 2019 10:19 PM UTC

}// 140/140

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animated version of d/14452 click to reset

u/metamero

#illusion #opticalillusion behind the scenes ;)
u/Xen

at first i was ok, but then i started screaming "I STILL SEE YOU!", and thats how it happened....
u/joeytwiddle

Very convincing illusion!

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metamero

remix of d/14452 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𜐿𘡧𬡥𩑮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𞠢𘰰𜀰𘠺𘠣𜀰𡠢`.replace(/u../g,'')))

Jun 5 2019 9:08 PM UTC

}// 138/140

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"緑錯視" by Akiyoshi Kitaoka

u/metamero

#illusion #opticalillusion see d/14452
u/metamero

http://www.psy.ritsumei.ac.jp/~akitaoka/colo…
u/Xen

if you tell me theres no green used here... thats where it all ends! i will walk the streets naked setting fire to things lol
u/metamero

u/Xen goto fullscreen and see the text closely. this is composed only with blue, black and cyan ;)

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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

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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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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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/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/11818 by u/metamero

function u(t) {

document.body.outerHTML=t?s+=` ИИ NN`:s='<p style=line-height:.6;font-size:25px;font-family:monospace>'

Jan 15 2019 2:24 PM UTC

}// 105/140

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ИИ NN Zöllner Illusion

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metamero

function u(t) {

document.body.outerHTML=t?s+=` NN ИИ`:s='<code style=font-size:25px>'

Jan 15 2019 1:30 PM UTC

}// 69/140

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N И Zöllner Illusion - thanks to prof. Akiyoshi Kitaoka - vertically aligned columns appear to tilt alternately

u/metamero

#illusion #zöllner #zollner
u/metamero

see d/11254 for ref on tilt illusions

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