Dweets awesomed by u/skeletonNatte

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: #Food

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Xen

function u(t) {

x.globalCompositeOperation='xor';t?x.drawImage(c,w/4*(t*9%3|0),h/2*(((t*9%3|0)+1)%2),w/2,h/2):x.fillRect(0,0,w=1920,h=1080)

Aug 10 2017 10:07 PM UTC

}// 123/140

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making this gave me such a headache, can you spot a simple 4bytes to shave? ;-)

u/Xen

dont post here, you see it when you see it, let others use this as target practice.

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cantelope

remix of d/3008 by u/New_Core

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(X=Y=0,i=d=350;i--;x.clearRect(X*Z+960,Y*Z+540,Z*4,Z*4))Z=d/(9+d-t*i%d),X+=6*C(a=i/50-9*S(t/8)*S(i/9)),Y+=6*S(a)

Aug 5 2017 5:55 AM UTC

}// 139/140

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just made a few small changes.. loved this one and wanted to see it with colors inverted :D

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FireFly

remix of d/3005 by u/FireFly

function u(t) {

for(i=5e3;Z=(i--%4>1)+i/128;i%4||x.beginPath(x.fill()))X=i%128+2>>2,x.fillStyle=R(Y=S(X*X/32+Z*Z/32-X-Z-t*6)*80+99),x.lineTo(X*60,Z*35-Y)

Aug 3 2017 9:03 PM UTC

}// 137/140

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Ripples! With proper quads instead. Add +Z*X-Z*16 after X*60 for perspective projection too (brings it up to 146)

u/FireFly

Another byte can be saved with with(x), but this causes a fair bit of slowdown for me. Thanks for some golfing tips from qfox and others on the jsgolf slack :)
u/cantelope

can't stop watching. def in my top 10 favs
u/iverjo

Very impressive!

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Xen

function u(t) {

t?x.fillRect((F=frame)%3,C(F),1,1,x.fillStyle=R(F%69,F%96)):c.width=3

Jul 26 2017 6:36 PM UTC

}// 69/140

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Low-Res 69byte Plasma Gone wrong lol

u/iverjo

#plasma
u/BuRRak

67 if you use t*60 instead of frame

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CodeUh

remix of d/2868 by u/CodeUh

function u(t) {

c.width=1920;x.beginPath();x.translate(950,550);x.scale(2,2)
  for(i=0;i<t*99;i++)
    x.lineTo(500*C(t+i),50*T(t+i));
  x.stroke();

Jul 15 2017 3:32 PM UTC

}// 135/140

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u/Xen

Remix done: 2888 ;-)

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alien

remix of d/2834 by u/alien

function u(t) {

c.width=200
f=frame
for(j=0;j<51;j++)
for(i=0;i<51;i++){
s=1.4**(i*i*j&f)+7.5
s%=255
x.fillStyle=R(s*2,s*2,s*3)
x.fillRect(i*2,j*2,2,2)
}

Jul 5 2017 7:23 PM UTC

}// 140/140

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u/Polyducks

Great colours and textures

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New_Core

remix of d/2822 by u/hamoid

function u(t) {

a=9*S(t)
b=9*C(t)
x.fillStyle=`hsl(${t*50},99%,50%`
for(i=11;i--;x.globalCompositeOperation='hue')x.fillRect(960+i*a+t*a,540+i*b+t*b,20,20)

Jul 2 2017 10:04 AM UTC

}// 139/140

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u/donbright

this looks great...
u/13thptr

#spiral

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the_yuhanna

function u(t) {

x.font='450px s'
x.fillText('Fuck you',100,600)
x.transform(1,0,0,1.02,0,-10)
x.fillStyle=`hsla(${867*t},80%,50%,${.004**t}`

Jun 24 2017 8:14 AM UTC

}// 124/140

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MrM@_S

function u(t) {

x.fillRect(2<<t,t&t,9,9+!(x.D=x.drawImage,x.globalCompositeOperation='xor'))
x.D(c,!frame++,1)
x.D(c,1,0)

May 30 2017 2:39 PM UTC

}// 105/140

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[deleted]

u/katkip

#gameoflife

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Beginner

function u(t) {

c.width|=1;x.translate(960,540);for(i=15;i--;x.rotate(t*.3))x.rect(a=-90-i*20+90*S(t),t,-a,a*2);x.fill('evenodd')
/*Original by New_Core*/

May 19 2017 6:28 PM UTC

}// 138/140

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Remake of New_Core

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