Dweets awesomed by u/saon

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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tomxor

function u(t) {

eval(unescape(escape`挮睩摴栽㐸〻挮獴祬攽❦楬瑥爺楮癥牴⠱⥳数楡⠱✻景爨椽㉥㐻椭ⴻ⥸⹦楬汒散琨㈴〫㤹⩓⡘㵩┱㈰⼳㤩⩃⡙㵩⼶攳⤭䌨夫琩⨨娽匨匨太㐩⽃⡘⨱㘯天⤪⨵⨸⤬ㄳ㔫㤹⩃⡘⤭䌨堫琩⩚ⱓ⡘⤬䌨夫娯ㄶ⭴⤪⨷⨳⤻`.replace(/u(..)/g,"$1%")))

Mar 18 2019 11:00 PM UTC

}// 140/140

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Super Dune #planet #space

u/tomxor

A tumultuous and dusty planet trapped in the middle of a binary star system (my excuse for lighting both sides :D). prepend t/=6; if you have a crazy fast GPU
u/lionleaf

Wow, this one is simply amazing!
u/aleamb

wow! superb! amazing!
u/iverjo

Very good!
u/vain

Unbelievable great bump map like fx

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batboy

function u(t) {

t==0?x.fillRect(0,0,1e5,1e5):0;
x.fillStyle="#fff"
for (i=0;i<100;i++)
x.fillRect(t*100,S(t)*100+540+(i%2==0?1:-1)|i*Math.random()*t,4.5,1)

Mar 18 2019 5:17 PM UTC

}// 139/140

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bridges

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DataMeta

remix of d/12586 by u/Xen

function u(t) {

for(c.width|=i=135;i--;x.arc(960+C(t*27+i/(t/9+99))*9,540+S(t*9+i/3)*6,i/.9*t%1111,0,x.lineWidth=7))x.beginPath(x.stroke())

Mar 3 2019 1:08 AM UTC

}// 123/140

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resonance

Show more comments…
u/DataMeta

big up to original
u/DataMeta

modify 'i' for different effects
u/sigveseb

#waitforit
u/Xen

Nicely done mate
u/magna

keeps on giving!
u/lionleaf

I was waiting for it pop like a balloon

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tomxor

function u(t) {

c.width=w=96
for(i=5e3;X=i%w,Y=i/w,i--;x.fillRect(X+2*Z,Y+4*Z,.6,1))Z=(.5+S(i/15+t*2)/2)*S(S(Y/8+t)+S(X/24+t)+t),Z=C(2*Z+S((X&Y)/(1+Z*Z))/8)

Mar 2 2019 7:46 PM UTC

}// 140/140

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Fractal Lake

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Xen

remix of d/12583 by u/Xen

function u(t) {

for(c.width|=i=135;i--;x.arc(960+C(t*27+i/(t%8+2))*9,540+S(t*29+i/3)*9,9*i,0,x.lineWidth=9))x.beginPath(x.stroke())

Mar 1 2019 10:31 PM UTC

}// 115/140

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django

function u(t) {

s=i=>i+1;a=1920,c.width=a;for(i=0;i<a;)y=.5,p=C(3*(t+i)),x.fillRect(y*a*s(S(t-i)),540*(S(t+i)*S(t*i*1e-3)*s(p)/4+s(y*(S(i++)-p))),10,10)

Mar 1 2019 4:33 AM UTC

}// 136/140

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coherence

u/gerzytet

welcome to Dwitter

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katkip

function u(t) {

// Transferring...








receiveMessage=pauseDemo=0;q="";l=q.length;for(i=616;i--;)q+=C(i+C(t+i/99)*10+t*29)<0?'0':'1'
throw q

Feb 28 2019 2:42 PM UTC

}// 128/140

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#binary #hax

u/rnbw

oh neat! i tried to do something like this once (never published it) but your execution is really good
u/Ath0r

cool!
u/joeytwiddle

#parallax
u/C010011012

throwing errors for animation? wow clever

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pavel

function u(t) {

for(c.width|=p=300;e=p--**.9%1;x.fillRect(960+r(0)/z,200+99/z,s=9*e/z,s))r=d=>p/(1+e*C(a=t/4+p))*C(a+p+d)+2*p/(1/e-e)*C(p+d),z=.5+r(1.6)/800

Feb 28 2019 6:54 AM UTC

}// 140/140

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Galaxy

u/pavel

300 bodies which individually only interact with an infinite mass at the center
u/pavel

Each body moves around an ellipse, the orbits are accurate. However, the movement speed is a very rough approximation.
u/pavel

Naively drawing an ellipse centers it around one of the focal points, however moving a body on this path slows the body down near this focal point and speeds it up near the other one.
u/pavel

The opposite effect is needed. So this code still moves a body around an ellipse but it re-centers the ellipse on the 'other' focal point.
u/pavel

In polar coordinates the difference between the x and y coordinates is a phase shift of pi/2 ~ 1.6

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Ath0r

function u(t) {

f=(i,j)=>{x.beginPath(),x.lineWidth=j,x.ellipse(960,560,...i),x.stroke()}
f([r=300,r,0,0,7],9)
for(i=9;i--;)f([600+20*i,100,9,2.07,1.07],35)

Feb 27 2019 9:41 PM UTC

}// 140/140

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Saturn #planets

u/Xen

nice!
u/tomxor

#saturn #graphic
u/katkip

#icon
u/Ath0r

I wanted to involve "t" to add some animation but no characters left :(

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New_Core

function u(t) {

for(c.width|=i=999;i--;)x.fillRect(960+i/3*S(a=i/9+(500*S(t/5)+500-i)*S(t+i/3)/500),540+i/3*C(a),9,9)

Feb 26 2019 10:48 AM UTC

}// 101/140

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u/tomxor

very nice

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