Dweets awesomed by u/rileyjshaw

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: #ScaryMovies

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cagr30

function u(t) {

c.width=192;A=Math.abs;Y=A(t*99%176-88);X=A(t*139%376-188);x.F=x.fillRect;x.F(X,Y+7,3,5);x.F(187,Y+C(X/39)*29,5,20);x.F(0,Y-S(X/29)*24,5,20)

May 8 2017 1:43 PM UTC

}// 140/140

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u/joeytwiddle

Remix of https://www.dwitter.net/d/135

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cagr30

function u(t) {

c.width=1920;for(i=0;i<1024;i++){var y=540*(1+S((60-t/60)*i/20));var q=960*(1+C(t*i/1200));x.fillStyle=(i%4,q,i);x.fillRect(q,y,20,20);}

May 7 2017 9:37 AM UTC

}// 136/140

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keithclark

remix of d/2671 by u/keithclark

function u(t) {

for(a=1e4,J=S(t/=2)/7,c.width=Z=127;a--;)x.fillRect(X=a&Z,Y=a>>7,1,'p}¶¼<¼¶}p'.charCodeAt(Z+Y*C(t)-X*J&15)>>(X*C(t)+Y*J+Z*t)%15&1)

May 3 2017 4:27 PM UTC

}// 132/140

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6 bytes shorter (thanks p01)

u/iverjo

So good!
u/keithclark

Add a ~ before 'p}¶¼<¼¶}p' to invert colours
u/Lazy1337

epic #rotozoom
u/vain

nice rotozommer

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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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@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

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MrM@_S

function u(t) {

onkeyup=e=>frame=0
t||(c.width=600)
onmousemove=e=>{E=e.pageX,X=e.pageY}
onmousedown=e=>T=!T
T||x.lineTo(E,X)
x.drawImage(c,200,!x.stroke())

Apr 27 2017 5:21 PM UTC

}// 140/140

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[drawing tool] Click to turn off draw. Click again to draw a straight line to your mouse. Press any key to clear. It draws in 3 screens

u/iverjo

#interactive

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joeytwiddle

remix of d/2355 by u/cantelope

function u(t) {

x.save(),x.translate(960,540);for(i=95;i--;x.fillStyle=`hsl(${i*6-t*99},99%,60%`,x.fillRect(a=i*i/9,a,-a*2,-a*2),x.rotate(t/3));x.restore()

Apr 27 2017 4:54 PM UTC

}// 139/140

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Minor remix that shows off the patterns in the spiral, as pointed out by sfz on the original dweet.

u/magna

Wooo!
u/joeytwiddle

Oeps too fast again! t/19 might look smoother for you

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rileyjshaw

remix of d/2619 by u/rileyjshaw

function u(t) {

c.width|=0
x.globalCompositeOperation=C(t*=2)<0&&'xor'
for(i=2;i--;x.fill())
x.beginPath(),x.arc(960-S(t)*540*i,540,(2-i)*100,0,7)

Apr 27 2017 3:47 PM UTC

}// 130/140

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Bit of golf…

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rileyjshaw

remix of d/2610 by u/rileyjshaw

function u(t) {

c.width|=0
x.globalCompositeOperation=C(t*=2)<0&&'xor'
x.arc(X=960,Y=540,3e2,0,7)
x.fill()
x.beginPath()
x.arc(X-S(t)*Y,Y,1e2,0,7)
x.fill()

Apr 27 2017 2:10 PM UTC

}// 139/140

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Orbit

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rileyjshaw

function u(t) {

c.width|=0;for(X=2e3;X-=40;)for(Y=2e3;Y-=40;s=(1+T(C(X/40+t)*C(Y/3+t)))*20,s=s<34?0:s,x.fillRect(X-s/2,Y-s/2,s,s))x.fillRect(X+19,Y+19,2,2)

Apr 27 2017 6:53 AM UTC

}// 139/140

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