Dweets awesomed by u/LimeLaser

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: #Food

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katkip

remix of d/13365 by u/katkip

function u(t) {

α=Math.PI;for(i=1337;i--;)x.fillRect(960+C(α/1*i+t+C(i/3-t)/2)*500,540+S(α/1*i+t+S(i+t)/2)*500,3,3),x.fillStyle=R(128+C(i)*128,i/9,i*t,.2)

Apr 22 2019 8:58 AM UTC

}// 138/140

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katkip

remix of d/13362 by u/katkip

function u(t) {

α=Math.PI;for(c.width|=i=1337;i--;x.beginPath())x.arc(960+C(α/2*i+t+C(t-i))*300,540+S(α/2*i+t+S(t-i))*300,9,0,7),x.fill()

Apr 22 2019 8:51 AM UTC

}// 121/140

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LimeLaser

function u(t) {

var a=181;var _c=997;var m=1920*1080;var n=1000
i=t?i:0
while(--n){
i=(a*i+_c)%m
x.fillRect(i%1920|0,i/1920|0,1,1)
}

Apr 22 2019 6:15 AM UTC

}// 116/140

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Linear Congruential Generator Test (Fade To Black)

u/LimeLaser

This pseudo-random number generator picks n pixels to fill per frame. Feel free to try different a or _c values (see Hull-Dobell Theorem).

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bandaloo

remix of d/13342 by u/Xen

function u(t) {

for(i=200;i--;x.beginPath(x.fill(x.arc(960+d*9*C(i+t)*i,540+d*9*S(i+t)*i,i,0,7))))d=C(S(t/99)*i),x.fillStyle=`hsl(${i},99%,50%,50%)`

Apr 21 2019 11:59 PM UTC

}// 132/140

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changed to hsl and saved some bytes (don't know if it looks any better)

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username

remix of d/3697 by u/Citiral

function u(t) {

for(i=w=c.width^=0;i-=10;)for(j=1e3;j-=10;x.fillRect(i,j,o,o))o=9+5*C(Math.sqrt((i-w/2)**2+(j-1e3/2)**2)/60-t*5)

Apr 21 2019 11:20 PM UTC

}// 112/140

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casual golf

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Xen

remix of d/13335 by u/bandaloo

function u(t) {

for(i=199;i--;x.beginPath(x.fill(x.arc(960+d*9*C(i+t)*i,540+d*9*S(i+t)*i,i,0,44/7))))d=C(S(t/69)*i),x.fillStyle=R(i*2,t^i,i*t%255,.1)

Apr 21 2019 8:28 PM UTC

}// 133/140

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Had to have a play

u/bandaloo

sick!
u/KilledByAPixel

i need to try this alpha thing i been hearing about
u/DeathBoy

LOVE it!

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KilledByAPixel

function u(t) {

for(i=0;i<495;x.fillStyle=`hsla(${t-i/3},99%,${i%99}%)`)x.beginPath(),x.arc(960+(Q=1200*S(i*t/2e3))*S(i),540+Q*C(i),i++?99:2e3,0,7),x.fill()

Apr 21 2019 7:01 PM UTC

}// 140/140

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April showers bring May flowers. #RoseCurve

u/joeytwiddle

#flower

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vinca

function u(t) {

for(i=2e3;i--;x.fillRect(i,0,1,9))x.fillStyle=`hsl(${1e3*S(t+i/(40+30*S(t/9)))+i},80%,80%`;x.drawImage(c,0,9)

Apr 21 2019 7:57 AM UTC

}// 109/140

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u/graue

this is trippy and awesome

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bandaloo

function u(t) {

c.width|=0;for(i=50;i-=1/4;)x.beginPath(),d=2*C((2+S(t/99))*2*i),x.arc(960+d*10*C(i)*i,540+d*10*S(i)*i,i,0,44/7),x.fillStyle=R(i*5),x.fill()

Apr 21 2019 5:23 AM UTC

}// 140/140

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DataMeta

function u(t) {

c.style.background=R();with(x)for(c.width|=i=0;i<255;beginPath(fill(rotate(.404))))fillStyle=R(i++,o=S(t-i)*i/2,-o),arc(960+o,540+o,i/2,0,7)

Apr 20 2019 8:18 PM UTC

}// 140/140

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