Top dweets by u/davidsharp

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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davidsharp

function u(t) {

c.width=1920
for(i=0;i<15;i++)for(j=0;j<15;j++)x.fillRect(400+i*55+S(t)*300+S(t*j)*10,55*j+S(t*i)*10,50,50)

Aug 17 2018 9:22 AM UTC

}// 107/140

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davidsharp

function u(t) {

c.width|=0;x.font='2cm A';for(n=0;n<19;)x.fillText('♥️',n++*100+S(t+n)*30,1080-(Math.abs(t*100*S(n))%1080))
// Happy Valentine's Day ♥️

Feb 14 2018 8:28 AM UTC

}// 135/140

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u/sigveseb

And space left over for a comment, the mark of a true golfer :)
u/iverjo

#hearts

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davidsharp

remix of d/6865 by u/davidsharp

function u(t) {

w=255
with(x)stroke(),beginPath(),lineWidth=9,strokeStyle=R(S(t)*w,S(t+1)*w,S(t+2)*w)
for(i=0;i<100;)x.lineTo(++i*19.2,500+S(i/8)*w*S(t+i))

Feb 12 2018 11:30 PM UTC

}// 139/140

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davidsharp

remix of d/6887 by u/davidsharp

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=0;i<64;){n=C(6*S(t)+(++i*3))*130
x.fillStyle=R(n*3,n*2,n*2)
x.fillRect(i*30,400+n,27,300)}

Feb 13 2018 9:57 AM UTC

}// 120/140

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davidsharp

function u(t) {

f='fillStyle'
r='fillRect'
w=2e3
x[f]='#0001'
x[r](0,0,w,w)
x[f]='#f0f'
for(i=w;i;)x[r](i--,535+S(i/4+S(t))*480,5,5)

Jan 30 2018 11:02 AM UTC

}// 116/140

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u/bepisTM

<span style="color:#f06">cool :o</span>
u/sigveseb

Niiice stuff
u/zanella

Kudos for the idea of using fillStyle and fillRect as strings.

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davidsharp

remix of d/6126 by u/davidsharp

function u(t) {

c.width=1920
x.beginPath()
x.lineWidth=10
x.strokeStyle='#f0f'
for(i=l=0;i<19;l=++i*100,e=i%2)if(l)x.lineTo(l,500+S(i*t)*100)
x.stroke()

Jan 23 2018 1:12 PM UTC

}// 136/140

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This was mostly a happy accident 🎉

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davidsharp

remix of d/11923 by u/davidsharp

function u(t) {

c.width|=0;k=100;x.font=k+'px a';T='hello•world•'
for(i=0;++i<k;)for(j=0;++j<11;)x.fillText(T[i%12],-2e3+(k*i)+(t*k)*(j%2||-1)%(k*12),k*j)

Jan 23 2019 1:11 PM UTC

}// 138/140

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davidsharp

remix of d/8797 by u/davidsharp

function u(t) {

with(x)for(i=n=23,g=1e3;--i;)F=f=>Math.abs(g-t/2*f(i/n)*g%(2*g)),fillStyle='#0001',fillText([...font='90px 🔴🔵😶'][5+i%3],F(C,g),F(S,g))

Sep 26 2018 12:04 PM UTC

}// 134/140

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painting

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davidsharp

remix of d/8796 by u/davidsharp

function u(t) {

with(x)for(i=n=23;--i;)F=(f,m)=>Math.abs(m-t*.7*f(i*1.5/n)*2e3%(2*m)),font='90px a',fillText('⚽️🏀🏈'.substr((i%3)*2,2),F(C,1920),F(S,1e3))

Jul 3 2018 8:54 AM UTC

}// 137/140

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Remixed from @micahcowan's https://www.dwitter.net/d/8781

u/davidsharp

swap .7 for speed, for crazy things like:with(x)for(i=n=90;--i;)F=(f,m)=>Math.abs(m-t*.4*f(i*1.5/n)*2e3%(2*m)),font='90px a',fillText('🌚🌝🍀'.substr((i%3)*2,2),F(C,1920),F(S,1e3))
u/micahcowan

Using u/magna's [...font] trick in d/8783, and removing an extra invisible character that appears in the list of balls (VARIATION SELECTOR - its absence may change the ball look for some people? didn't for me), it became possible to restore the screen-clearing. with(x)for(c.width|=i=n=23;--i;)F=(f,m)=>Math.abs(m-t*.7*f(i*1.5/n)*2e3%(2*m)),fillText([...font='90px ⚽🏀🏈'][5+i%3],F(C,1920),F(S,1e3))
u/davidsharp

That's a really neat trick 👌

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davidsharp

remix of d/6929 by u/davidsharp

function u(t) {

c.width|=0;c.style.filter='invert(1)';x.font='2cm A';for(n=0;n<20;)x.fillText('❄',n++*80+S(t+n)*40,Math.abs(t*100*S(n))%2000)

Nov 20 2018 2:56 PM UTC

}// 125/140

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snow

u/iverjo

#snow

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