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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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cantelope

remix of d/3139 by u/Xen

function u(t) {

for(w=i=960;i--;x.fillStyle=`hsla(${X=w-h},99%,60%,.015`,x.fillRect(w+C(h)*X*S(h*9)-s/2,540+S(h)*X*C(h*9)-s/2,s,s))s=(w-(h=i/9+t*w%1800))/7

Sep 1 2017 5:29 AM UTC

}// 139/140

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u/sigveseb

Trippy

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Xen

remix of d/3136 by u/alien

function u(t) {

for(i=1920;i--;x.fillRect(C(i),S(i),T(i),i))x.translate(137,55),x.rotate(i),x.fillStyle=R(i/9,0,i/9)

Aug 31 2017 9:26 PM UTC

}// 100/140

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Xen

remix of d/3124 by u/Xen

function u(t) {

x.font='300px X';x.fillStyle=R(t*66%(Y=255),t*33%Y,t*99%Y,.01);x.fillText('CodeGolfTeam Xen',Z=9+C(t)*19,Z+598);x.fillRect(Y*C(t)*7,380,Y,Y)

Aug 30 2017 11:35 PM UTC

}// 140/140

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Shoutz CGT!

u/cantelope

this deserves mad props. i don't know if it was accidental or intentional, but the effect is rad.
u/kchplr

The 90's are back, and they're pissed off.
u/Xen

MegaDrive gon kick yo ass!!!! saaaygaaaaaaah!
u/donbright

my screen says "CodeGolfTea", which sounds delivious

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schastlilya

function u(t) {

x.clearRect(0,0,1920,1080);x.fillRect(S(t)*960+960,S(t)*540+540,S(t)*960+960,S(t)*540+540);

Sep 3 2017 7:11 AM UTC

}// 91/140

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A basic one...

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Xen

remix of d/3102 by u/Xen

function u(t) {

c.onmousemove=e=>Z=e.offsetX;for(c.width|=i=99;i--;)x.ellipse(X=540,X,t,i*C(t)+X,(Z/c.width*2)*i*2.1,Z,T(t))
x.strokeStyle='#'+Z,x.stroke()

Aug 31 2017 12:31 AM UTC

}// 139/140

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with mouse movement as requested.

u/donbright

cooool
u/iverjo

#interactive

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donbright

remix of d/3119 by u/Xen

function u(t) {

x.globalAlpha=.008
半=500
x.fillRect(0,0,i=w=2e3,w)
for(i=(3e3);i--;)x.clearRect(frame*(i*i-(j=t*i%frame)*j)/(b=j*j+i*i),999-2*i*j*i/b,2,4)

Aug 29 2017 9:24 PM UTC

}// 138/140

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thx Xen

u/Xen

Welcome ;-)
u/Xen

i just remixed your remix of my remix of your dweet, trying to message you, find me @xen_the
u/alien

wow

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3D.ceffo

function u(t) {

c.width=1000; /* clear the canvas */
  for(i=0;i<500;i++)
  x.fillRect(2*i, 200+100*S(i*Math.PI/250)*C(t*i), 2,200)

Aug 30 2017 2:10 PM UTC

}// 116/140

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Time Machine

u/donbright

this is a cool illusion, i thought it was getting bigger
u/3D.ceffo

just like a generator

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Xen

function u(t) {

for(i=(X=99)*11;i--;x.fillStyle=R(t*i/3%X,t*i/4%X,t*i/2%X,.1))x.fillRect(909+i*C(i+t),500+i*S(i+t),X,X)

Aug 30 2017 10:03 PM UTC

}// 103/140

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The Longer It Runs, The Better It Gets.

u/donbright

this is great
u/Xen

thanks, handy square in middle for stare challenge

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Xen

function u(t) {

x.fillStyle=`hsl(${(X=799-t*2)*9},99%,50%`,x.globalAlpha=.4
x.fillRect(799+C(t)*X*S(t*9),499+S(t)*X*C(t*9),199,199)

Aug 31 2017 11:11 PM UTC

}// 115/140

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let it run for a bit if you can be bothered, and yes it goes all the way in then back out again.

u/cantelope

so cool. remixed :D

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cantelope

function u(t) {

for(c.width|=i=12;i--;x.stroke())x[i-5?'lineTo':'moveTo']((w=990)+(C(q=i<6?-t:3-t)+S(p=2.513*i+t)*S(t))/(Z=S(q)+3+S(p)*C(t))*w,540+C(p)/Z*w)

Aug 29 2017 8:11 PM UTC

}// 140/140

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Xen golfed the last 5 bytes. Cheers!

Show more comments…
u/Xen

not a problem ;) you golfed all the first ones... :D
u/donbright

wireframe king
u/cantelope

@donbright, are you challenging me to make something different? I accept!
u/donbright

we are not worthy
u/cantelope

oh u
u/cantelope

@donbright, i did not mean for my statement regarding a challenge to sound arrogant, but I see it came across that way. I just meant, you are correct that i do a lot of wireframe dweets, and I'm enthusiastic about trying something new! I hope we're good. Love your work!
u/Xen

its hard to figure the emotion behind a comment sometimes, which is why i ALWAYS spam mine with smileys ;-)
u/donbright

no its fine, my words dont come across in ASCII very well
u/donbright

i am in awe of everyone here, my mind constantly boggles at the skill and techniques of all of the people here. i have a special affinity for wireframe for some reason.
u/donbright

i mean i like looking at wire frame, but im not that good at making it, so its cool to see it.
u/cantelope

ah <3