Dweets awesomed by u/Jenky

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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New_Core

remix of d/630 by u/New_Core

function u(t) {

w=2e3;x.globalAlpha=.05;for(x.fillRect(0,0,a=i=w,w);i-=4;)s=99/(-a+(i+t*99)%a),X=a*S(i*99)*s+1e3,Y=a*C(i)*s+500,x.clearRect(X,Y,s*9,s*9)

May 1 2017 6:47 AM UTC

}// 137/140

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u/donbright

this looks so cool
u/magna

Shaved down to 122: https://www.dwitter.net/d/2656
u/iverjo

#stars #starfield

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New_Core

remix of d/2646 by u/magna

function u(t) {

c.width|=0;for(i=55;i--;x.lineWidth=13,x.strokeStyle='hsl('+a*30+',99%,50%)',x.stroke())x.beginPath(),x.arc(960,540,i*20,a=10*S(t+i/90),a+3)

Apr 30 2017 11:26 AM UTC

}// 140/140

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magna

remix of d/2635 by u/magna

function u(t) {

c.width|=0
x.globalCompositeOperation='xor'
for(i=55;i--;x.lineWidth=30,x.stroke())x.beginPath(),x.arc(960,540,i*20,a=t*5+i/9,a+Math.PI)

Apr 30 2017 1:31 AM UTC

}// 136/140

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u/donbright

groovy
u/magna

#spiral

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yonatan

remix of d/2641 by u/yonatan

function u(t) {

for(X=c.width=256;X-=2;)for(Y=148;Y-=2;x.fillStyle=`hsl(${A=(X*C(t)-Y**S(t))&(Y*C(t)+X**S(t))},${A=A*t%50+25}%,${A}%`)x.fillRect(X,Y,2,2)

Apr 28 2017 10:44 PM UTC

}// 137/140

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u/donbright

game changer
u/joeytwiddle

Wow! :D
u/yonatan

hmm, 15 FPS here and 30 on https://dweet.dwitter.net/id/2643?autoplay=1

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saschavoid

remix of d/1231 by u/iverjo

function u(t) {

c.width^=0;for(i=9;i<2e3;i+=2)s=3/(9.1-(t+i/99)%9),x.beginPath(),j=i*64+S(i/1e4+t),x.lineWidth=s*s,x.arc(960,540,s*49,j,j+.6),x.stroke()

Apr 28 2017 9:22 PM UTC

}// 136/140

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Do not dwell on it if drunk.

u/iverjo

#tunnel

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yonatan

remix of d/2640 by u/yonatan

function u(t) {

d=x['get'+(I='ImageData')](0,0,c.width=128,72)
d.data.map((_,i,a)=>a[i]=(X=i&511)*C(t)-(i>>=i&7)**S(t)&X**S(t)+i*C(t)&255)
x['put'+I](d,0,0)

Apr 28 2017 9:16 PM UTC

}// 140/140

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u/magna

Awesome!

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MrM@_S

function u(t) {

for(i=q=c.width=255;i--;x.fillText(u,(o*C(8)*z+R)-t%q,-2*z,z*=z/2,z))z=q/((o=T-30))
onmousemove=e=>{T=e.pageY,R=e.pageX,R/=3,T/=8}

Apr 28 2017 6:28 PM UTC

}// 130/140

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quine

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magna

function u(t) {

c.width|=0
x.lineCap='round'
for(x.lineWidth=i=45;i--;x.stroke())x.beginPath(),x.arc(960,540,50+(j=i%10)*50,a=S(t+i)*3,a+Math.abs(C(t*5)))

Apr 28 2017 5:28 PM UTC

}// 138/140

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magna

function u(t) {

onmousemove=e=>{S=e}
w=c.width=320
for(j=14;j--;)for(i=8;i--;)'ŁŃŇŏşſƿȿşśűŰƠƠ'.charCodeAt(j)-w&1<<i&&x.fillRect(S.pageX+i,S.pageY+j,1,1)

Apr 28 2017 4:28 PM UTC

}// 136/140

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Retro mouse pointer

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@literallylara

function u(t) {

for(t?0:P=[W=960,0],i=99;i--;)Q=[[0,H=1080],[W*2,H],[W,0]][Math.random()*3|0],x.fillRect(P[0]=(P[0]+Q[0])/2,P[1]=(P[1]+Q[1])/2,4,4)

Apr 27 2017 6:23 PM UTC

}// 131/140

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Inspired by https://www.youtube.com/watch?v=kbKtFN71Lfs

u/veubeke

Uncanny

dwitter.net | Jenky (2164)