New #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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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pavel

function u(t) {

with(x)for(i=4;i--;fill())for(beginPath(j=4),fillStyle=i?R(a=128+50*S(~i%3+13*t),a,a):'#868';a=j--/.64;)arc(960,536-~i%3*5,i<3?300:3e3,a,a)

Jun 6 2019 4:36 AM UTC

}// 139/140

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The Perpetual Diamond #illusion

Show more comments…
u/pavel

Contrast Reversals Along Thin Edges Create the Appearance of Motion in Objects
u/pavel

https://doi.org/10.1177/2041669518815708
u/katkip

Wow
u/metamero

beautiful!!! #opticalillusion
u/SMON

It's grest but cannot hold a candle to some of your other works. :)
u/agshapiro

love it!

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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) {

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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metamero

function u(t) {

eval(unescape(escape`𡠽𩀽🡻𭱩𭁨𚁸𚑦𫱲𚁩🐶𝀻𪐭𛐻𩡩𫁬𚁐👮𩑷𘁐𨑴𪀲𡀬𩀿𤀮𨑲𨰨𞐶𜀫𚀨𪐾🠳𚐭𜰮𝐩𚡤𛀵𝀰𚰨𪐥𞀭𜰮𝐩𚡤𛀴𜠬𜀬𝰩𞡐𛡲𩑣𭀨𜀬𜀬𜡥𜰬𜡥𜰩𚐩𩡩𫁬𤱴𮑬𩐽𩀿𩀦𜐿𤠨𜀬𜀬𜀬𛠳𚐺𤠨𜐹𞐬𜐹𝰬𞀸𚐺𤠨𞐱𛀸𞀬𜠵𝐩𯐻𡠨𜀩𞱆𚀱𜠰𚐻𡠨𜐱𝐩`.replace(/u../g,'')))

May 20 2019 7:08 PM UTC

}// 138/140

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attempt to reproduce another #opticalillusion by prof. Akiyoshi Kitaoka (image appears to contract)

u/metamero

uncompressed: F=d=>{with(x)for(i=64;i--;fill(P=new Path2D,d?P.arc(960+((i>>3)-3.5)*d,540+(i%8-3.5)*d,42,0,7):P.rect(0,0,2e3,2e3)))fillStyle=d?d&1?R(0,0,0,.3):R(199,197,88):R(91,88,255)};F(0);F(120);F(115)
u/pavel

147 with(x)for(d of[0,120,115])for(i=64;i--;fill(arc(960+((i>>3)-3.5)*d,540+(i%8-3.5)*d,d?42:2e3,0,7)))beginPath(fillStyle=d?d&1?'#0005':'#CC5':'#55F')
u/Xen

niice

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DataMeta

function u(t) {

j=t*1920,x.fillRect(j%1920,j%1080,k=51,k)

May 7 2019 1:43 AM UTC

}// 41/140

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#opticalillusion

u/metamero

#CafeWallIllusion
u/Xen

love it!

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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

dwitter.net | #opticalillusion