Dweets awesomed by u/trupples

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: #Opposites

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yokljo

function u(t) {

if(!t)w=c.width=203
d=x.getImageData(0,0,w,w)
for(a=w*w*3;a--;)d.data[a]?d.data[a+w*4+~(t%6)-2]=w:d.data[-~(t%w*w)]=w
x.putImageData(d,0,0)

Aug 28 2017 9:13 PM UTC

}// 139/140

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u/donbright

is this like a crazy game of life? very intersting

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Xen

remix of d/3101 by u/kchplr

function u(t) {

f=frame
'p}¶¼<¼¶}p'.charCodeAt(f/8|0)&1<<f%8|0&&x.fillRect((f/8|0)*9*11,f%8*9*11,99,99)

Aug 24 2017 11:50 PM UTC

}// 89/140

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nystrand

function u(t) {

for(i=c.width+=0;i--;x.fillRect(a*w+1e3,b*w+540,m=w/9-9,m))[a,b,z,w=(z+9+T(t))*19]=t?x[i/3|0]:[S(i),C(i),6*i%8-3],x[i/3|0]=[b+a/77,z,a-b/77]

Aug 19 2017 1:34 PM UTC

}// 140/140

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Show more comments…
u/iverjo

Respect!
u/joeytwiddle

Wow!
u/cantelope

unreal!
u/n0va

Impressive!
u/FireFly

This one is really cool! Keep it up! :)
u/p01

👍
u/donbright

oh man!!!
u/nystrand

thanks for all the nice comments!
u/13thptr

#d3 #perspective

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Xen

function u(t) {

x.fillText(x.drawImage(c,480*(t*9%3|0),540*((t*9%3|0)%2),960,540),9,9)

Aug 10 2017 11:13 PM UTC

}// 70/140

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-70Byte-Refix-

u/Xen

another 4 bytes can be shaved but it will take longer to draw ;-)
u/kchplr

62 bytes, same speed : x.fillText(x.drawImage(c,(V=t*9%3|0)*480,V%2*540,960,540),9,9)
u/kchplr

62 bytes and faster, but less interesting fade in: x.fillText(x.drawImage(c,(V=frame%3)*480,V%2*540,960,540),9,9)
u/iverjo

#sierpinski

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leonarven

remix of d/2726 by u/unwiredben

function u(t) {

x.fillStyle=R((a=t*60|0)%255),
x.font="80px courier",
x.fillText('\\/'[Math.random()*2&1],a%52*36,((a/52)|0)%18*60+60)

Aug 9 2017 8:31 PM UTC

}// 118/140

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Just for exercise

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cantelope

function u(t) {

for(V=(c.width=1e3)/2,H=j=99;j--;x.stroke())for(x.beginPath(),i=H,Z=i-j;i--;x.lineTo(V+X/Z*V,(S(i/5+C(t)*4)*C(j/9-t*7)*j/9+30)/Z*V))X=H-i*2

Aug 6 2017 6:10 AM UTC

}// 139/140

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mostly what i was going for... not exactly.

u/joeytwiddle

smooth

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cagr30

function u(t) {

tt=500*t;s=100;a=tt%1920;q=t;y=tt%1080;r=s*S(t);x.fillStyle=R(S(q*t)*255,S(2*q*t)*255,S(3*q*t)*255);x.fillRect(0+a,0+y,s-r,s-r)

Aug 1 2017 3:57 PM UTC

}// 128/140

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yokljo

function u(t) {

x[f="fillStyle"]=R(0,0,0,.04)
for(m=42,i=-1,x.fillRect(0,0,n=1e4,n),x.font="50px A";i<m;x[f]="#0F0")x.fillText((t+f)[3],i*49,m*m*S(m*t+i++))

Jul 27 2017 5:48 PM UTC

}// 140/140

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Try different values of m, like 53.

u/Xen

matrix? got my vote :D
u/sigveseb

very clean matrix effect

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p01

function u(t) {

t?x.fillText(4,9*(Z+=(X+=((Y+=X-(X*Z-Y)/99)-X)/9)*Y/Z-1),540+X*9):X=Y=Z=1

Jul 24 2017 9:08 PM UTC

}// 73/140

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MINI-LORENZ

u/p01

Nothing wild really. This is mostly a Dwitter port of http://aem1k.com/lorenz/ which we golfed previously
u/rodrigo.siqueira

#lorenz #attractor

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dongwoo

function u(t) {

c.width|=0
x.font='4cm a'
x.translate(f=900,f)
g=(h,j,k)=>x.fillText(h,j,k)
g('🐩',-20,80)
x.rotate(Math.abs(S(t*12))*Math.PI/5)
g('🐕',0,0)

Jul 20 2017 1:56 AM UTC

}// 138/140

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u/sigveseb

lol
u/magna

Background music to go with it: https://www.youtube.com/watch?v=ivJrE_Wory0

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