Dweets awesomed by u/nick

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: #ScaryMovies

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nick

function u(t) {

a=b=>x.fillRect(b[0],b[1],2,2)
for(i=0;i<88;i++)for(j=0;j<50;j++)a([200*T(i*t),200*T(j*t)])
x.fillStyle=R(224*T(t*i),224*T(t),222*C(t*i))

Mar 14 2017 5:45 AM UTC

}// 138/140

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mxfh

remix of d/2120 by u/mxfh

function u(t) {

x.setTransform(f=32,0,0,f,v=731,540);x.fillStyle=['#039','#FC0','#EF3340'][i=~~t];x.fillRect(w=[f,5,2][i],-f,a=2*-w,v);x.fillRect(-f,w,v,a)

Mar 14 2017 4:23 AM UTC

}// 139/140

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http://www.norden.org/en/fakta-om-norden-1/t…

u/iverjo

#flag

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nick

function u(t) {

c.width=800
a=b=>Math.round(C(b*t))
for(i=0;i<88;i++)for(j=0;j<50;j++)x.fillRect(9*i,9*j,9*a(a(i)),9*a(j/2))

Mar 13 2017 6:34 AM UTC

}// 108/140

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hypothete

remix of d/2091 by u/hypothete

function u(t) {

e=144;d=new ImageData(w=c.width=255,e);
for(i=w*e;i--;){
c=(((i%w)-w/2)**2+((i/w)-e/2)**2)%w;
d.data.set([c],i*4+3)}
x.putImageData(d,0,0)

Mar 13 2017 6:28 AM UTC

}// 138/140

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u/donbright

seems nice and fast for animations.. e=144;d=new ImageData(w=c.width=255,e); for(i=w*e;i--;){ c=S(t)*(i%w)**2+C(t)*(i/w)**2; d.data.set([c%w],i*4+3)} x.putImageData(d,0,0)

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hypothete

remix of d/2069 by u/veubeke

function u(t) {

e=144;f=1/9;d=new ImageData(w=c.width=255,e);
for(i=w*e;i--;){
c=t*w*(C(f*i%w)+S(f*i/w))%w;
d.data.set([c,c,c,w],i*4)}
x.putImageData(d,0,0)

Mar 13 2017 6:17 AM UTC

}// 140/140

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nick

function u(t) {

c.width|=0
a=b=>Math.ceil(b)
for(i=0;i<50;i++)for(j=0;j<30;j++)x.fillRect(a(t)%j?40*i:0,a(t)%i?40*j:0,20,20)

Mar 13 2017 5:39 AM UTC

}// 108/140

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recursive

function u(t) {

t||(g=h=[])
for(n=i=960;--i+n;x.fillRect(i/d+n,(4-g)*99/d,9,99))h[i]=g=(g+h[i-1]+S(n*g)/9)/2||1,x.fillStyle=R(q=3*(t+9)*g,q,q*q>>7),d=1-t/30

Mar 13 2017 4:23 AM UTC

}// 140/140

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Rough surface

u/IV

It's like watching Bob Ross: 'happy little trees; anywhere you feel like...'

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mxfh

function u(t) {

b=1;h=1080;w=960;for(i=l=2*w;i--;b=!b,x.fillStyle=b?"#000":"#FFF"){x.fillRect(i+b,l,2,C(i/w-1)**2**S(i/w+t)*-h+b)}x.drawImage(c,0,-1,l,h)

Mar 13 2017 4:03 AM UTC

}// 137/140

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u/recursive

Looks really good in fullscreen

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pangolin

remix of d/2063 by u/pangolin

function u(t) {

c.width=400
f=(y,z)=>{x.moveTo(a,a);x.lineTo(y*S(z)+a,a-y*C(z));x.stroke()}
d=new Date/1e4%4320
f(a=90,d%6*1.047)
f(80,d/57%6.3)
f(60,d/855)

Mar 13 2017 2:04 AM UTC

}// 140/140

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Clock V.2

u/nick

Wait? How did you get 145 characters?
u/pangolin

It says 140/140 for me. If you copy it into notepad++ or something I think it counts linebreaks as 2, Dwitter counts linebreaks as 1.
u/recursive

If you edit it, suddenly the character count becomes correct also.

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recursive

function u(t) {

x.fillRect(C(t/5)*960+960,S(t)*270+270,9,9)
x.clearRect(0,h=540,2e3,h)
for(i=544;i-=8;)x.drawImage(c,0,h-i,2e3,8,0,h+i*(S(i+t)/9+1),2e3,8)

Mar 12 2017 11:00 PM UTC

}// 138/140

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Reflections

u/Renaud___

Nice idea
u/codeslaw

love this
u/FireFly

Lovely reflections :D

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