Dweets awesomed by u/vinca

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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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

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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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vinca

remix of d/14177 by u/vinca

function u(t) {

for(c.width=w=99,h=50,i=4950;i--;x.fillRect(X,Y,1,1))x.fillStyle=R(a=150*S(Math.hypot(50-(X=i/50|0),25-(Y=i%50))**2+t),S(a/99|t/4)*99)

Jun 2 2019 1:14 PM UTC

}// 134/140

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SuperFromND

remix of d/3234 by u/artfarnaa

function u(t) {

for(i=(w =c.width=1e3),x.fillRect(0,0,w,w);i--;)x.clearRect(w/2+T(p=(q=T(i)%t*75)/(2/5)+t)*q,275+C(p*(1))*q,5,2)

Jun 2 2019 8:04 AM UTC

}// 112/140

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Distortion

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pavel

remix of d/14376 by u/pavel

function u(t) {

eval(unescape(escape`瑼簨瀽焽刽㌵〬堽夽爽猽㔩㭐㵰ⵘ㭑㵱ⵙ㭐⩐⭑⩑㸱攵☦⡕㵐⼱㔬嘽儯ㄵ⤻砮慲挨瀫㵲⨽瀾㵒♰㰱㔷ぼ簭ㄬ焫㵳⨽焾㵒♱㰷㌰籼ⴱⱒⰰⱣ⹷楤瑨簽〩㭸⹡牣⡘⬽唬夫㴫⭖ⰳ㔬〬㜩㭸⹦楬池敶敮潤摠`.replace(/u(..)/g,"$1%")))

Jun 2 2019 7:17 AM UTC

}// 134/140

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#physics #bounce #compressed

u/pavel

172 t||(p=q=R=350,X=Y=r=s=5);P=p-X;Q=q-Y;P*P+Q*Q>1e5&&(U=P/15,V=Q/15);x.arc(p+=r*=p>=R&p<1570||-1,q+=s*=q>=R&q<730||-1,R,0,c.width|=0);x.arc(X+=U,Y+=++V,35,0,7);x.fill`evenodd`
u/DataMeta

Would be very cool to see the ball decoupled from the container's reference frame. Could it fit within a compressed dweet?
u/pavel

it is decoupled
u/DataMeta

Somehow missed that. Awesome.

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vinca

remix of d/14343 by u/Xen

function u(t) {

for(c.width^=200,x[l='fillStyle']='#121',x[r='fillRect'](0,0,2e3,2e3),i=9;i--;x[r](400+i*99+S(t)*300+S(t*99)*5,400+T(t),50,200))x[l]='#6F1'

Jun 2 2019 5:06 AM UTC

}// 139/140

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u/Xen

:-o matrix!

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vinca

remix of d/14377 by u/vinca

function u(t) {

for(c.width|=i=2e3,x.strokeStyle='#869';i--;)x.lineTo(960+(j=i/S(t/7|i/99))*C((a=5e5*S(S(t/9)))/j/j),540+j*S(a/j/j));x.stroke()

Jun 2 2019 4:18 AM UTC

}// 127/140

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vinca

function u(t) {

for(c.width|=i=2e3;i--;)x.lineTo(960+(j=i/S(t/2)/9)*C((a=5e5*S(S(t)))/j/j),540+j*S(a/j/j));x.stroke()

Jun 2 2019 2:52 AM UTC

}// 101/140

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pavel

remix of d/10076 by u/yonatan

function u(t) {

t?X*X+Y*Y>2.4e5&&(v=C(t*t)/42-.07,U=v*X,V=v*Y):U=V=Y=X=3
X+=U;Y+=++V
x.arc(w=960,h=540,h,0,c.width|=0);x.arc(w+X,h+Y,40,0,7)
x.fill`evenodd`

Jun 2 2019 12:27 AM UTC

}// 140/140

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#physics #bounce

u/pavel

The velocity of the bounce changes on every hit, otherwise the ball would settle on a simple pattern

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katkip

function u(t) {

eval(unescape(escape`𪐽𚁘𛁙𛁒𚐽🡻𮀮𨡥𩱩𫡐𨑴𪀨𚐬𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱒𚠹𩐳𯐬𝰹𙐬𝀵𙐩𨀬𮀮𩡩𫁬𚁸𛡥𫁬𪑰𬱥𚁘𛁙𛀷𜀫𤠪𜠬𜰰𚱒𚠹𛁒𚱴𚠴𛀰𛀳𚱓𚁴𚐪𜰩𚑽𞱦𫱲𚁪🐹𞐻𪠭𛐻𚑩𚀹𝠰𚱃𚁪𚐪𪠪𞐬𝐴𜀫𤰨𪠩𚡪𚠹𛁪𚠱𛠰𝰩`.replace(/uD./g,'')))

Jun 1 2019 9:33 PM UTC

}// 126/140

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#compressed #psychedelic #trippy #infinite #color #loop

u/Xen

oooo like

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katkip

function u(t) {

c.width*=1;for(i=262;i--;)x.beginPath(),x.ellipse(i*9,540,3,i*2,i*i/4e3+t,0,7),x.ellipse(i*9,540,3,i*2,-i*i/4e3-C(t*9)/4,0,7),x.fill()

Jun 1 2019 8:16 PM UTC

}// 134/140

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