Dwitter - javascript demos in 140 characters

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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darrentorpey

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 */

Feb 28 2017 3:23 AM UTC

}// 122/140

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vegolasse

function u(t) {

function a(r){x.arc(S(.3*r)*400,S(.5*r)*730,i,0,Math.PI*2);x.closePath()}c.width=1920;for(i=0;i<2600;i+=30){a(t*1);a(t*2)};x.fill("evenodd")

Feb 24 2017 3:27 PM UTC

}// 140/140

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u/donbright

now that is truly elegant and cool, brilliant use of fill

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kchplr

function u(t) {

for(c.width^=0,x.fillRect(0,1e3,2e3,9),n=13;n--;z=S(t+n/5)**2,x.setTransform(100,0,0,10-z**9*3,150+n*125,622+300*z),x.fillRect(-z,0,1,10));

Feb 26 2017 12:06 PM UTC

}// 140/140

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gabrielsroka

function u(t) {

c.width=1920
w2=c.width/2-100
x.fillStyle="red"
x.fillRect(w2-C(t*4)*w2/2+50,540,100,20)

Feb 26 2017 1:45 AM UTC

}// 88/140

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Fracking cylons!

u/donbright

in a snow storm no less!
u/joeytwiddle

Fracking toasters. https://www.youtube.com/watch?v=Kwwh2OfJDs8

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dh7

function u(t) {

c.width=1920; /* Feel like I'm 11 now */
for(i=0;i<777;i++){
  r=S(t)*400+C(t+i*t/7777)*100
  x.fillRect(960+r*C(t+i), 520+r*S(t+i), 7, 7) }

Feb 24 2017 8:49 PM UTC

}// 140/140

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u/sigveseb

with comments :)

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Dalton

function u(t) {

c.width=1920;
var ctx = c.getContext("2d"); ctx.font = "200px Monospace"; ctx.fillText("Hello, World!",200,600);

Feb 27 2017 12:31 AM UTC

}// 112/140

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u/donbright

golfable to 72 : m=200;c.width=m*10;x.font=m+'px Mono'; x.fillText('Hello, World!',m,m*3)
u/iverjo

Just "Mono" doesn't work on my computer (Windows). Need to type the whole word: Monospace
u/iverjo

That said, here's a 64 character version: t||(x.font='200px Monospace',x.fillText('Hello World!',200,600))

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SpecialAgent

function u(t) {

w=960,h=540,x.strokeStyle=R(255*T(t*t),255*S(t),255*C(t),0.03)
x.strokeRect(w+S(t)*w,h+C(t)*h,10,10)
x.drawImage(c,S(t),-C(t>>10),w*2,h*2)

Feb 25 2017 9:50 AM UTC

}// 138/140

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Just messing around

u/5Mixer

Nice, looks super smooth, like paint. I need to mess around with not clearing the screen more :)

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ninerdelta

function u(t) {

c.width=1920; /* clear the canvas */
a = t/10*Math.PI;r=300;
x.moveTo(960,540);
x.lineTo(960-r*C(a),540-r*S(a));
x.lineWidth=10;
x.stroke();

Feb 27 2017 11:50 PM UTC

}// 140/140

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omg wow double rainbow

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aashmango

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 */

Feb 27 2017 10:05 PM UTC

}// 122/140

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fson

function u(t) {

x.strokeStyle = R(5*t, 0, 10*t, 0.01);
x.arc(t*100, (S(t+Math.PI)+1.5)*300, (S(2*t)+1)*100, 0, 2*Math.PI);
x.stroke();

Feb 23 2017 11:35 PM UTC

}// 119/140

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u/lionleaf

That looks amazing!
u/iverjo

Dope
u/Xen

Remix #2933
u/Xen

Remix #2933