Dweets awesomed by u/lionleaf

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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FireFly

function u(t) {

x.strokeStyle='hsl('+t*8+',90%,50%)'
x.beginPath()
for(i=24;i;x[i-24?'lineTo':'moveTo'](960+--i*20*C(U=i/4+t/4),540+i*20*S(U)));
x.stroke()

Feb 28 2017 4:37 PM UTC

}// 139/140

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u/donbright

cool hsl

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sawaxon

remix of d/1580 by u/sawaxon

function u(t) {

c.width=1920;x.font='120px Arial';
for(i=0;i<190;i++)
x.fillText('*',i*10,S(t)*600+S(i*2+t*2)*200+400);

Feb 28 2017 4:22 PM UTC

}// 103/140

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u/lionleaf

Scary barbed fence :O

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FireFly

function u(t) {

X=0;X||(c.onmousemove=(e)=>(x.lineTo(X=e.offsetX/c.offsetWidth*1920,Y=e.offsetY/c.offsetHeight*1080),x.beginPath(x.stroke()),x.moveTo(X,Y)))

Feb 28 2017 3:28 PM UTC

}// 140/140

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Paint! Works best in fullscreen, unfortunately I can't fit detection of mouse button to toggle painting (also not sure how, without two more event handlers…)

u/Kalanchoe

Nice! moveTo is unnecessary if you already have beginPath and lineTo; c.offsetWidth/1920 and c.offsetHeight/1080 are both equal to about .2958 (at least on the desktop): https://www.dwitter.net/d/809
u/FireFly

Won't c.offsetWidth and c.offsetHeight change when the user goes fullscreen? I wanted to support both not-fullscreen and fullscreen equally well. Good point about moveTo!

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MiseryMyra

function u(t) {

c.width=1920
for(i=1;i<7;i++){x.fillStyle=R(i*S(t)*S(t)*255,0,C(t)*C(t)*99,1)
x.fillRect(800*S(i*t)+960,300*C(i*t)+99*C(3*i*t)+540,99,999)}

Feb 28 2017 1:59 PM UTC

}// 139/140

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FireFly

function u(t) {

if(t%12<.01)c.width|=0;x.beginPath();for(i=12;i;x.moveTo(960+40*i*C(T),540+40*(i-1)*S(T)),x.arc(940,540,40*i,T,T=t/8%1*--i*6.28));x.stroke()

Feb 28 2017 12:21 PM UTC

}// 140/140

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u/SpecialAgent

Impressive! Reminds me of a clockwork orange.

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5Mixer

function u(t) {

i=w=c.width=1920
x.font="7em ῦ"
n=150
x.fillText("👾",n,200)
x.fillText("🐄",n,S(t*5)*n+600)
while(i-->0)x.fillRect(i,1e3,1,S((i+n)/n)*70-n)

Feb 28 2017 9:09 AM UTC

}// 138/140

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Plz put me down alien.

u/5Mixer

This was just a quick one, didn't spend too much time golfing. Interesting but minor discovery, use em as the unit in font size and you might not have to go into double digits.
u/iverjo

Thanks for the tip :)
u/joeytwiddle

#emoji #funny #scene #cow #ufo #alien

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Tosmatobeef

remix of d/1525 by u/lionleaf

function u(t) {

c.width=2e3;v='Thanks for making Dwitter!';for(i=v.length;i--;)x.font=100+'px Arial',x.fillText(v[i],i*81,540+S(t*10+i)*10)

Feb 28 2017 6:26 AM UTC

}// 123/140

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u/lionleaf

You're welcome! Fun to see activity here :)
u/sigveseb

:D

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magna

function u(t) {

c.width=w=64;h=36;c=32;s=j=>j*j/w;r=Math.random;
for(i=w*h;i--;)x.fillStyle=R((s(h-i/w)+s(c-i%w)<12)*255*r(),r()*c),x.fillRect(i%w,i>>6,1,1)

Feb 28 2017 3:46 AM UTC

}// 140/140

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donbright

remix of d/1491 by u/SpecialAgent

function u(t) {

t?c.width=w:w=512,h=w*9/16,d=x.createImageData(w,h)
for(X=0;X<w;X++)for(Y=0;Y<h;Y++)d.data[(X+Y*w)*4+3]=(X^Y+X&Y)%256
x.putImageData(d,0,0)

Feb 28 2017 1:40 AM UTC

}// 140/140

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a nice clean and simple Sierpinski gasket using XOR + AND

u/donbright

you can increase w to get a bigger pic but it becomes slow

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lionleaf

remix of d/431 by u/lionleaf

function u(t) {

c.width=2e3;v='Avatars from gravatar!';for(i=v.length;i--;)x.font=130+S(t*5)*30+'px Arial',x.fillText(v[i],i*89,540+S(t*9+i)*20)

Feb 28 2017 12:06 AM UTC

}// 128/140

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Avatars have been added! They are fetched from gravatar.com based on your email, so register there to get one. Thanks to u/sigveseb for the implementation :)

u/lionleaf

#feature

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