Random dweets | Dwitter

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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function u(t) {

n=2e3;c.width=n;t/=64;for(p=0;p<n*2;p++)i=C(p),j=T(t/i),k=S(t*i),x.strokeStyle=R(9*j,9/k,9/i,i>0?i:-i),x.strokeRect(n*k+n/2,n*i+n/4,j/k,j/i)

Jan 1 2018 12:28 AM UTC

}// 140/140

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Qwitter

remix of d/21458 by u/Xen

function u(t) {

c.style.filter=`blur(15px)contrast(80)`;w=c.width=160;
for(i=99;i--;x.fillStyle=R(99*S(i*t),80,i*t))x.fillRect(49+T(i+t),45+99*C(i*t),9,6);

Jan 27 2021 3:56 PM UTC

}// 139/140

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Membrane

u/Xen

nice

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metamero

function u(t) {

for(c.width|=k=0,z=72;k<447;k++)i=k>>4,j=k&15,i+j&1?0:x.rect(p=z*i,q=z*j,z,z)
x.fill('evenodd')

Dec 2 2018 3:47 PM UTC

}// 95/140

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double for technique i learned around here

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futureperfect

remix of d/3697 by u/Citiral

function u(t) {

w=1920;for(c.width=i=w;i>=0;i-=10)for(j=0;j<1080;j+=10){i2=i-w/2;j2=j-1080/2 
o=5*(C(t*i2/60)+S(t*j2/60));
x.fillRect(i,j,o,o)}

Dec 27 2017 6:12 PM UTC

}// 127/140

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pavel

function u(t) {

with(x)for(k=n=j=255;j--;k=2,fill())for(beginPath(fillStyle=R(T=(t^k)%2*128,T,i=4));i--;)arc((j%9-t%1)*n+T,(j>>4)*n+T,64*k,a=(i-t%1)*11/7,a)

Nov 13 2018 2:29 AM UTC

}// 140/140

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u/yonatan

arc?!
u/anotherkitten

oh you sly dog very well done
u/pavel

:)
u/jylikangas

Very cool! You can save 3 bytes by removing the unnecessary %1 from t when calculating a and also doing <<7 instead of *128. If someone is wondering how this works using a+1 instead of a at the end may help. :)
u/katkip

#beesandbombs
u/pavel

Removing %1 at the end breaks the animation on my iPhone.

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Zeta2391

function u(t) {

for(t*=5,h=4e3,i=g=0;i++<h;)x.fillStyle=`hsla(${t+i/4},8%,5%,.2)`,x.fillRect(t+Math.cos(i/3-t)*g,540+Math.sin(i/3-t)*g,4,4),g+=Math.sin(t)*1

May 12 2023 1:14 PM UTC

}// 140/140

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contone

function u(t) {

X=Math.random()*2e3
Y=frame*40
x.font="3cm'"
for(i=0;i++<50;)
x.fillStyle=R(i),
x.fillText("⚫",X,Y-i*5)
x.fillText("🐓",X,Y-300)

Apr 5 2021 7:12 PM UTC

}// 127/140

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chicken towers

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Xen

function u(t) {

for(c.width|=i=z=499;i--;)x.fillRect(z+i%9*99+S(t)*z,z+(i&9**C(t+i)*t%z),50,9)

Mar 25 2021 4:05 PM UTC

}// 78/140

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#Default #DNA

u/danny@hille.dk

i think there is some mutation going on :-)

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katkip

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀪🐱𞱦🐨𦀬𦐬𤠬𦠽𝀰𚱃𚁒𚐪𝀰𚐽🡻𮀮𨡥𩱩𫡐𨑴𪀨𚐻𩡯𬠨𪐽𜰻𪐭𛐻𚑸𛡡𬡣𚁘𚱃𚁪👩𚠲𛠰𞐫𤠩𚡚𛁙𚱓𚁪𚐪𦠬𜀬𜀬𜀩𛁸𛡦𪑬𫀨𚑽𞱦𫱲𚁫🐲𜀻𪰭𛐻𚑦𫱲𚁬🐱𜠻𫀭𛐻𚑦𚁫𚠹𞐬𫀪𞐹𛀴𜀫𭀪𜠫𪰪𜰮𜐴𚱬𚠳𛠱𝀩`.replace(/uD./g,'')))

Jul 15 2019 3:19 PM UTC

}// 130/140

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#triangles c.width*=1;f=(X,Y,R,Z=40+C(R)*40)=>{x.beginPath();for(i=3;i--;)x.arc(X+C(j=i*2.09+R)*Z,Y+S(j)*Z,0,0,0),x.fill()};for(k=20;k--;)for(l=12;l--;)f(k*99,l*99,40+t*2+k*3.14+l*3.14)

u/katkip

#loop

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metamero

function u(t) {

z=72
c.width^=0
for(i=0;i<15;i++)
for(j=0;j<15;j++)
((i+j)%2?i:x.rect(p=420+z*i,q=z*j,z,z)),x.rect(420+z*i,z*j,20,20)

x.fill('evenodd')

Nov 29 2018 10:54 PM UTC

}// 136/140

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