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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Current theme challenge: #Food

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FireFly

remix of d/1690 by u/FireFly

function u(t) {

s=t?t<.1?s.replace(/\d/g,i=>+i?'-0+1+0-':'+1-0-1+'):s:'0';c=s[t*60|0];c<2?x.translate(0,16,x.fillRect(0,0,3,16)):x.rotate(c+1.05)

Mar 3 2017 4:49 PM UTC

}// 129/140

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Same as parent, but golfed and abusing time for the first 6 frames to evaluate/expand the L-system. The straight line at the start is an artifact of this and the particular choice of system.

u/donbright

love this method
u/SpecialAgent

love this series
u/katkip

#fractal

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rodrigo.siqueira

remix of d/28302 by u/rodrigo.siqueira

function u(t) {

f=n=>Math.abs(n+~n+.5)
for(c.width%=W=X=2e3;X--;)for(Y=1,k=8;k--;x.fillRect(X,Y*W-999,C(Y+4.5),W))Y-=Math.abs(f((~~(2*t%7))**k*X/W)-.3)/3**k

Aug 17 2023 12:12 PM UTC

}// 140/140

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Geometric subdivisions (fractal mountain formation)

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bokoskokos

function u(t) {

c.width|=0;if(!t)a=b=d=e=5;x.font='2cm Arial',a+=d,b+=e;x.fillText('🏀',a,b);if(a<0|a>1820)d=-d;if(b<0|b>1000)e=-e

Feb 13 2018 3:37 PM UTC

}// 113/140

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mmastrac

remix of d/3446 by u/ETHproductions

function u(t) {

f=e=>Math.asin(C(t*1*e))*180*e+250*e;X=f(4);Y=f(2);c.width|=0;x.fillRect(0,Y-20,32,256),x.fillRect(1888,Y-99,32,256);x.fillRect(X,Y,10,10);

Nov 2 2017 9:25 PM UTC

}// 139/140

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Pong that plays itself...

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kan_9

function u(t) {

for(i=0;i<9;i++)
x.fillRect(400+i*100,400,50,200)
c.style.transform = `translate(${100*S(t*t)}px)`;

Mar 30 2020 5:46 PM UTC

}// 99/140

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The bars don't move

u/magna

#default

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JoshiRaez

remix of d/4414 by u/JoshiRaez

function u(t) {

for(i=40;i<1920;i+=1){c=t*200+i;final=S((c*0.003))*122+123;x.strokeStyle=R(final,final,final,1);x.strokeRect(950-(i)/2,540-i/2,i,i)}

Dec 28 2017 4:44 PM UTC

}// 132/140

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rodrigo.siqueira

remix of d/19968 by u/rodrigo.siqueira

function u(t) {

for(i=146;x.beginPath(),i--;x.fillStyle=`hsl(${i*3} 90%${S(i*3+t*6)*99}%)`,x.fill())x.arc(960+C(t)*(k=(1.06)**i)*.8,540+S(t)*220,k,0,7)

Sep 17 2020 1:42 AM UTC

}// 135/140

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Tunnel effects #tunnel

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joeytwiddle

remix of d/15128 by u/joeytwiddle

function u(t) {

c.width|=0;x.font='9em"';[...'🌽🐖🥓🍔💩'].map((C,j)=>{for(i=12;i--;)X=((i+t*4+S(t*5-j*8))%12)-6,x.fillText(C,900-(1-2*(j%2))*X*192,160+220*j)})

Apr 24 2026 11:07 PM UTC

}// 139/140

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Pork burger factory (squeamix)

u/cantelope

i don't pay you to show me how the porkburgers are made

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BriSeven

remix of d/18368 by u/veubeke

function u(t) {

π=3.14
T=(x)=>π-(.5*x/π%1)*π*2
c=(x)=>(y=(x*x)**.5,16*x*(π-y)/(5*π*π-4*y*(π-y)))
x.fillRect(950,540,c(T(t+π/2))*300,c(T(t))*300)

Apr 24 2020 2:46 PM UTC

}// 128/140

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Bhaskara's Sine Approximation Formula #circlechallenge

u/BriSeven

what's kinda weird is the value of pi doesn't seem to matter much, it still makes a great looking circle.

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username

remix of d/13546 by u/username

function u(t) {

x.font=`66em'`
x.fillText(String.fromCodePoint(128336+(t*9^0)%24),373,847)

Apr 30 2019 3:18 PM UTC

}// 74/140

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time in 74 bytes