Dweets awesomed by u/GitAtMe

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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Xen

remix of d/3167 by u/Xen

function u(t) {

for(i=c.width|=0;i--;x.fillRect(960+S(p=.9*i+S(t)*3e3/i*S(t))*(d=i*i/1e3)-i*C(t),540+C(p)*d-i*S(t),s,s))x.fillStyle=R(Z=t*i%255,s=i/5,255-Z)

Jan 2 2018 9:31 PM UTC

}// 140/140

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u/jbl

WOW! 💯
u/lionleaf

Testing new links u/Xen
u/Xen

Yay! d/5309
u/donbright

i would have said this was impossible if i didnt see it
u/lionleaf

#alien #needle #color #floppy #rotation
u/sybarita

Yo what ... this is amazing
u/mrperson59

Is this what sleeping beauty pricked her finger on?

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CliffJonesJr

remix of d/4136 by u/Exca

function u(t) {

for(i=0;i<540;i++){d=C(t+i),s=i?9-d*8:2920
x.fillStyle=R(i/3,i,i*2,.1)
x.fillRect(S(t*2.5+i)*S(C(t)+i%50)*(550-i)*1.5+960*(i?1:-1),i*2,s,s)}

Dec 29 2017 4:50 AM UTC

}// 140/140

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Twister!

u/joeytwiddle

#tornado

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jaemiejaemie

function u(t) {

c.width=640;x.beginPath();for(i=0;i<640;i++){a=180;for(j=1;j<t*60%60;j+=~~(t)%2+1){a+=S((i+t*60)*j/20)*50/j}x.lineTo(i,a)}x.stroke()

Dec 27 2017 10:31 AM UTC

}// 132/140

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demonstration of basic fourier curves (square/saw)

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u/sigveseb

Very cool!
u/joeytwiddle

Nice. DSP hero!
u/iverjo

Kudos!
u/RomanW

Excellent!
u/joeytwiddle

#math
u/katkip

#fourier

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Exquisite

function u(t) {

r=1080;d=960;c.width=2*d;for(i=0;i<999;i++){x.fillStyle=R(i%300,i%255,i%320);x.fillRect(d+300*S(i+t),r/2+300*S(i)+T(t-i),10,10);}

Dec 27 2017 2:37 AM UTC

}// 129/140

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u/netule

wonderful
u/Exquisite

Thanks :)
u/webworker

Which way is it turning? :D
u/mrremix

^ whoa yea
u/hoppla1232

Help me polarize, help polarize
u/BirdsTweetCodersDweet

#whichwayround #inorout
u/geb

#background

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New_Core

remix of d/3611 by u/cantelope

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=800;i--;)x.fillStyle=R(i,i%255,0,1-255/290),x.fillRect(960+i*S(b=i/.019004+S(t-i/300)),540+i*C(b),a=60-i/14,a)

Dec 10 2017 9:49 PM UTC

}// 140/140

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I liked it so had to do my own

u/New_Core

#floppy

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sigveseb

remix of d/302 by u/sigveseb

function u(t) {

(F=Z=>{for(x.fillStyle=R(W=1/Z*4e3,W/2,W/4),i=Z*Z*2;n=i%Z,m=i/Z|0,i--;n%2^m%2&&x.fillRect((n-t%2-1)*W,(S(t)+m-1)*W,W,W));Z&&F(Z-6)})(36)//rm

Feb 21 2017 11:18 PM UTC

}// 140/140

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u/dx4100

absolute insanity in two lines of code -- so awesome!
u/Daboo

I love it
u/lionleaf

All credit to u/sigveseb! dwitter.net/d/302
u/surasshu

fabulous!
u/alpha

Nice
u/soxface

incredible...
u/suresh

Awesome!
u/arowberry

really really cool!
u/highfestiva

This is far from your best work, why is it so liked?
u/iverjo

Because it got much exposure during a traffic peak on dwitter last year
u/iverjo

Besides, it's an awesome dweet :D
u/iverjo

https://www.youtube.com/watch?v=vFdDOcDLXt4
u/iverjo

#recursive
u/vain

Very cool checkerboard parallax fx
u/fentbiggesthater

decent

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julie

function u(t) {

c.width=2e3;for(i=9;i--;)for(j=9;j--;)x.beginPath(),x.arc(i*250+S(t*i)*99, j*99+C(t*j)*99,50,0,7),x.fillStyle=R(S(t*j)*999,0,99),x.fill()

Jan 14 2017 4:45 PM UTC

}// 137/140

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New_Core

function u(t) {

x.fillStyle=R(b=2e3,b,b,0.1);x.fillRect(0,0,b,b);x.beginPath();for(i=b;i--;)x.lineTo(i/2*C(t)+i*S(g=t+i)+960,i/4*S(t)+i*C(g)+540);x.stroke()

Aug 21 2016 3:10 PM UTC

}// 140/140

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u/iverjo

Dat tunl!
u/New_Core

maybe its a spinning chinese hat from top
u/iverjo

You're right, I can trick my brain into beliving that. Funky! It's like one of those illutions where you see different things based on how you look at it/think of it
u/iverjo

*believing
u/iverjo

Dwitter really needs an "edit comment" feature :P
u/lionleaf

Wow!!
u/giel

Nice!
u/lionleaf

#rotation #hat #in_or_out #lighting
u/joeytwiddle

#shiny
u/vain

Wow! Very nice!

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iverjo

function u(t) {

X=Y=999,a=0,d=50*t;for(i=0;i++<6;)x.beginPath(),x.moveTo(X,Y),X-=d*S(a),Y-=d*C(a),i>t&&x.lineTo(X,Y),d*=.6,x.stroke(),a+=Math.random()-.5

Feb 21 2016 9:04 PM UTC

}// 137/140

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#tree #bush

u/iverjo

#random

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iverjo

function u(t) {

c.width=2e3;for(i=8e3;i--;)p=3*t+i/9e3+i%4/.637,d=C(p)-S(p),d>0&&x.fillRect(999+149*S(p)+790*S(t+i/9e3+i%3*4.5),i/6-2,149*d,2/(d+1))

Feb 21 2016 8:54 PM UTC

}// 132/140

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Twisters dancing through each other

u/iverjo

#twister

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