Dweets awesomed by u/Joachim

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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keithclark

remix of d/11328 by u/keithclark

function u(t) {

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,k=r>>8,k))r=900/(4-(t+j/13)%4)

Dec 7 2018 11:15 AM UTC

}// 98/140

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Golfed down to 98 bytes

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u/keithclark

Also fixes some glitches in the original
u/keithclark

swap ,k=r>>8,k for ,r>>=8,r to save a byte (97)
u/keithclark

also r=900/(4-(t+j/9)%4) => r=j/(4-(t+j/9)%4) (94)
u/iverjo

Very nice #starfield
u/keithclark

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r))r=j/(7-(t+j)%7) (92)
u/jylikangas

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r))r=j/(7-t++%7)(90)
u/keithclark

nice!
u/keithclark

for(x.fillRect(0,0,j=2e3,j);r=j--/(7-t++%7);)x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r) (89)
u/jylikangas

Yes!
u/vain

very nice!
u/384.cz

#starfield

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metamero

remix of d/11329 by u/metamero

function u(t) {

t?onmousedown=e=>b=onmousemove=e=>b&&x.lineTo(e.x,e.y):(onresize=ondblclick=e=>c.width=innerWidth)(onmouseup=e=>x.beginPath(b=0))
x.stroke()

Dec 6 2018 8:53 PM UTC

}// 140/140

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minimalist marker #interactive #paint v1.2 = click to draw multipath + double click or resize to delete + fullscreen-able

u/metamero

#application #app
u/metamero

https://www.instagram.com/p/BrEQqIHgraf
u/metamero

see d/11334 for a version that changes marker size with the mouse wheel
u/metamero

and d/11336 for a mobile/multitouch version

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keithclark

function u(t) {

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,2/Z,2/Z))r=600/(Z=1+(T(j*.61)-t/3)%1)

Dec 6 2018 5:33 PM UTC

}// 105/140

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u/katkip

#starfield #stars #d3

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rnbw

function u(t) {

x.rotate(2.0944);for(i=0;i++<99;){x.fillStyle=R(m=~~(S(i*12+t*6)*2)*1e3,m/12,0,.02);x.fillRect(-2e3,i*40-2e3,6e3,240)}

Dec 5 2018 7:08 PM UTC

}// 118/140

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triangles and whatnot

u/magna

Neat!

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jylikangas

function u(t) {

t?onmousemove=e=>X=e.x:X=99
F=a=>x.fillRect(i-a*X,a*50,a/5,h>0?0:h)
for(c.width=512,i=2e3,h=k=0;i--;F(!F(3)),F(5))h+=k=i*i%15<1?S(i**4):k

Dec 5 2018 7:36 AM UTC

}// 137/140

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Parallax Mountains #interactive - use mouse

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pavel

remix of d/11280 by u/pavel

function u(t) {

for(c.width|=i=36;j=60*(--i>>2);x.fillRect(-j,0,2*j,u>0||9))x.setTransform(u=C(a=(i/2+t/8)*Math.PI),v=S(a),0,4,960+j*v,256+j/2-j*u)

Dec 5 2018 4:20 AM UTC

}// 131/140

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#pyramid v2

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magna

remix of d/11264 by u/yonatan

function u(t) {

eval(unescape(escape`挮睩摴栽㘴㭦潲⡩㴳攳㭩ⴭ㭸⹦楬汒散琨堬夬ㄬㄩ⥘㵩┶㐬夽椾㸶Ɱ㵵孩崽⡍慴栮牡湤潭⠩⨨畛楝⭵孩⬱崫畛椫㘳崫畛椫㘴崫㔩㸾ㄩ⬨堾ㄳ♘㰴㠦堥㐾ㄦ夾ㄳ♙㰲ㄦ琦ㄩ⨶〬砮晩汬却祬攽刨測港㌬港㘩`.replace(/u(..)/g,"$1%")))

Dec 4 2018 5:42 AM UTC

}// 136/140

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Raging #default

u/magna

Uncompressed: c.width=64;for(i=3e3;i--;x.fillRect(X,Y,1,1))X=i%64,Y=i>>6,n=u[i]=(Math.random()*(u[i]+u[i+1]+u[i+63]+u[i+64]+5)>>1)+(X>13&X<48&X%4>1&Y>13&Y<21&t&1)*60,x.fillStyle=R(n,n/3,n/6)
u/magna

#flames #fire
u/Xen

love it!

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pavel

remix of d/11279 by u/marc8

function u(t) {

with(x)for(c.width|=j=9;j--;fillStyle=j%2?'red':'blue',fill('evenodd'))for(beginPath(i=6);i--;arc(960,540,2.6**p,a=(6*i+p)*71/113,a))p=j+t%2

Dec 4 2018 5:18 AM UTC

}// 140/140

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355/113 is a famous approximation of pi and here we need pi/5 which is perfect as 5 divides 355 giving 71/113

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u/marc8

Great remix
u/sigveseb

.628 works too, and is a little shorter :)
u/pavel

Yeah I didn't need the precision but it was an interesting coincidence and I had extra chars :)
u/donbright

wondrful
u/pavel

#uncompressed
u/katkip

#pemtagram
u/katkip

#tagfail #pentagram
u/46uuuu

#infinitezoom

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jonathan-potter

remix of d/11257 by u/yonatan

function u(t) {

r=Math.random;for(u[h=16]=r(i=9e3)*i;i--;x.fillRect(i/2,i%32*h,h,h))x.fillStyle=R(n=u[i]=r(q=i+r()-.3|0)*(u[q]+u[q-32]+u[q-31])/1.5|0,n/2)

Dec 4 2018 1:18 AM UTC

}// 138/140

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#fire changed some things stylistically to fit

u/iverjo

Very nice!
u/Qwitter

Cool NES Vibes! Awesome!

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yonatan

remix of d/11257 by u/yonatan

function u(t) {

r=Math.random
c.width=64
for(i=3e3;i--;x.fillRect(i%64,i>>6,1,1))n=u[i]=r()*(u[i]+u[i+1]+u[i+63]+u[i+64]+5)>>1,x.fillStyle=R(n,n/2,n/4)

Dec 3 2018 7:28 AM UTC

}// 135/140

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#fire

u/aleamb

superb!!

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