Top dweets of all time

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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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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rileyjshaw

function u(t) {

t*=s=60
for(x[g='globalAlpha']=1,x.stroke();t&&o<t;x.lineTo(m+q,n+q))m=C(o+=x[g]=.01)*o,n=S(o)*o,q=C((m+n)/s)*S((m-n)/s)*s
x.fill()
o=t//RJS

Apr 26 2017 5:50 PM UTC

}// 140/140

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My first dwitter! ٩(◕‿◕｡)۶

u/magna

This is an awesome first!
u/rileyjshaw

Thanks :D

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magna

function u(t) {

w=c.width|=0;x.fillRect(0,0,w,w);x.clearRect(100,470,1720,140);x.fillRect(110,480,1700,120);x.clearRect(120,490,(1-1/(1+t/10))*1680,100)

Apr 26 2017 4:56 AM UTC

}// 136/140

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fr-0140

u/joeytwiddle

hehe
u/magna

#farbrausch

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magna

remix of d/2545 by u/prawnwarp

function u(t) {

c.width|=0;for(i=0;i<1920;i+=64){for(j=0;j<1080;j+=64){x.fillStyle=`hsla(${i*j},50%,50%,.3)`;s=S((t*T(i&j^t)))*64+64;x.fillRect(i,j,s,s);
}}

Apr 22 2017 5:02 PM UTC

}// 140/140

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u/joeytwiddle

Very pretty! It reminds me of this awesome 256b: https://linusakesson.net/scene/a-mind-is-bor…

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phst

function u(t) {

c.width=1920;
  for(i=0;i<100;i++)
  x.fillRect(100+i*15,400+S(2*t+i)*250,8+S(i)*80,10+C(2*t-i)*100)

Apr 19 2017 2:52 PM UTC

}// 100/140

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Polyducks

function u(t) {

x.fillRect(0,0,1920,1080)
x.font = "60px A"
W=S(t)*600;H=T(t/10)*200;for(i=0;i<20;)x.fillText("👾",((100*(++i%5))+700)+W,(100*(i%4))+200+H)

Apr 18 2017 6:42 PM UTC

}// 139/140

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SPACE INVADERS

u/Polyducks

Weird... I wonder why it's stopped working...
u/magna

It still works for me. macOS + Chrome.
u/joeytwiddle

MacOS and Chrome here. The unicode char (was it 👾?) appears to get stripped while loading. If I paste it in between the "", then it works. Perhaps Dwitter loads differently on different pages?

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magna

remix of d/2516 by u/magna

function u(t) {

c.width|=0
x.font='50px monospace';
((u+'').slice(0,t*3+S(t)*5)+' |'[t*2&1]).split('\n').map((r,i)=>x.fillText(r,0,++i*50))

Apr 18 2017 12:29 PM UTC

}// 123/140

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Slimmer version of "pair programming nightmare"

Show more comments…
u/magna

Challenge: Add occasional mistakes like skipped characters / typos etc.
u/Polyducks

I'm struggling to understand how this works. Where have you got the function input from? Amazingly realistic!
u/Jenky

It's from (u+'') - afaik, it's basically a short/cheat way of converting anything to a string in JS :D
u/Jenky

Also, down to 119 and whole string within canvas - https://www.dwitter.net/d/2524
u/magna

@Jenky Nice!
u/magna

#quine

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eruonna

function u(t) {

a=[0,9,0,-9,0]
if(t){if(i>=0){d=(p[i--]+1)%4;p.push(d);j++;b+=a[d];c-=a[d+1];x.lineTo(b,c);x.stroke()}else i=j}else{p=[0];i=j=0;b=960;c=540}

Apr 17 2017 8:56 PM UTC

}// 140/140

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Works best in full screen, otherwise line is too thin

u/donbright

how does it work ?
u/eruonna

One way to draw the next iteration of the dragon curve is to take the previous iteration and then add it to itself backwards and rotated 90 degrees. Here p is the array of previous steps, j the index of the current step, and i walks backward through p. When i gets to the beginning, we set it equal to j and start over.
u/donbright

thanks, that is fascinating

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cantelope

remix of d/2451 by u/cantelope

function u(t) {

w=(c.width|=0)/2
for(i=99;i--;x.fillStyle=`hsl(${t*99+i},99%,50%`,x.fillRect(w+1/(Z=3+C(p=i-t*2))*(i-50)*w/30,540+S(p)/Z*w,s=250/(Z*Z),s));

Apr 9 2017 4:58 AM UTC

}// 139/140

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