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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ciaccodavide

remix of d/20843 by u/ciaccodavide

function u(t) {

r=270
vx=1
vy=.5
X=960+r*S(vx*t*Math.PI+S(t*Math.PI))
Y=540+r*C(vy*t*Math.PI)
x.moveTo(r+X,Y)
x.arc(X,Y,r,0,9) 
x.stroke()

Nov 29 2020 4:50 PM UTC

}// 122/140

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webgyo

remix of d/4340 by u/webgyo

function u(t) {

c.width=1920;for(i=0;i<9;i++){x.fillRect(400+i*100+C(t)*400,400,50,200)}
alert(t)

Dec 29 2017 6:06 AM UTC

}// 81/140

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u/Jerbell

Good job devs by not spamming us with alert

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rodrigo.siqueira

remix of d/33424 by u/rodrigo.siqueira

function u(t) {

for(c.width%=i=2e4;X=S(i+t),Y=C(i+t),Z=1/S(i*i),V=C(t+X/3)*X+S(t)*Z,W=S(t)*X+C(t)*Z-6,i--;)x.fillRect(960+2e3*V/W,540+2e3*Y/W,5,5)

Mar 2 2025 10:03 PM UTC

}// 130/140

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Conic interaction

u/cantelope

mind bending

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KilledByAPixel

remix of d/27036 by u/KilledByAPixel

function u(t) {

t?x.fillRect(A,B,Z,Z):(X=Y=540,V=3,W=2,Z=32,F=_=>u[G=(A=X>>5)+(B=Y>>5)*Z]?1:u[G]=-1)
X+=V*=F(X+=V)
Y+=W*=F(Y+=W)
x.clearRect(A*=Z,B*=Z,Z,Z)

Feb 12 2023 9:55 PM UTC

}// 139/140

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lo-fi breakout

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recursive

function u(t) {

c.width=256;
for(X=255;X--;)for(Y=144;Y--;)
if((q=C(X/8+C(t*7))+C(Y/8+S(t*8))-C(t*3)*2)>0?q<.2||X+t*30&4:Y+t*30&4)x.fillRect(X,Y,1,1)

Mar 5 2017 6:27 PM UTC

}// 133/140

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denzen

function u(t) {

with(x)for(i=a=1e3;i--;u=C(t+i**3),fillStyle=R(b=S(t/6+u)*190,b,b,1-u),beginPath(),arc(a+a*C(t+i)*u,540+a*S(t+i)*u,i/9*(u+1),0,6))fill()

Jan 21 2020 6:14 PM UTC

}// 136/140

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u/Xen

nice!

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Zeta2391

function u(t) {

for(i=0;i<1920;i+=10)for(j=0;j<1080;j+=10){x.fillStyle=R(S(t)*255,C(t)*255,T(t)*255,1);x.fillRect(i,j,3,3);}

Dec 7 2022 1:29 PM UTC

}// 108/140

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Colorful

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gpg

function u(t) {

c.width|=0;for(i=300;i--;m=9*3**(-i/50),a=v=>S(i/9+t+v)*99+99,x.fillStyle=R(a(0),a(4),a(8),2+S(t+i)*m),x.fillRect(9*i,540+99*C(t+i)*m,8,8));

Dec 28 2017 4:41 PM UTC

}// 140/140

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donbright

function u(t) {

質=(n)=>{for(j=2;j<n;j++){if (n%j==0)return n}return 0}
格=7
for(X=299;X--;)
for(Y=299;Y--;)
if (質(X&Y)) x.fillRect(格*X,格*Y,格,格)

Sep 19 2021 5:40 PM UTC

}// 128/140

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Prime fun 1 / 3 - This is the standard X&Y (binary AND) Sierpinski triangle picture but only where X & Y is a prime number. perhaps revealing a relationship between primes and binary AND #math #primes

u/donbright

(note white = X&Y is prime, black = X&Y is composite)
u/andrea270872

this is really nice. retro and mathsy at the same time!
u/donbright

#Sierpinski

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initramfs

remix of d/22922 by u/initramfs

function u(t) {

x.drawImage(c,10+S(t)*10,0)
i=e=1250;while(i--)x[g='fillText'](['💭','🌎','🍁','👾','😂'][Math.abs(~~(20*S(C(i)*1)))],e-i%1250,S(i+S(S(t)))*e)

May 31 2021 5:29 AM UTC

}// 137/140

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