Top dweets by u/iverjo

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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iverjo

remix of d/89 by u/iverjo

function u(t) {

c.width=2e3;for(i=5e3;i--;)p=3*t+S(t/8)*i/3e3+i%4/2,d=C(p)-S(p),d>0&&x.fillRect(960+199*S(p)+249*S(t/.7+i/6e3),i/4-2,299*d,1/(d+1))

Jan 14 2017 4:31 PM UTC

}// 131/140

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iverjo

remix of d/143 by u/chunnoo

function u(t) {

c.width=1920;for(i=-2;i<2;i+=.05)for(j=-4;j<4;j+=.05)a=i*j-3*T(t),1/(j*j+i*i)+1/(a*a+i*i)>1&&x.fillRect(j*240+960,i*240+540,12,12)

Jan 14 2017 3:44 PM UTC

}// 130/140

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Let the dweetoff begin!

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iverjo

remix of d/568 by u/iverjo

function u(t) {

x.fillStyle=R(150,84,249,.01);X=S(t);x.lineTo(960+512*C(t)*S(6*t),540+512*S(t)*S(6*t));x.fill()

Dec 31 2016 3:24 PM UTC

}// 95/140

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#flower

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iverjo

function u(t) {

c.width=2e3;n=900;for(i=9;i<n;i+=2)s=3/(9.2-(t/2+i/99)%9),x.beginPath(),x.lineWidth=s*s*4,x.arc(n,540+500*S(t),s*119,j=i*9,j+.6),x.stroke()

Aug 11 2016 11:34 PM UTC

}// 139/140

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u/sigveseb

this tunnel looks so clean!
u/iverjo

Thanks :) My aim was to create a vertical camera tilt effect. I ended up just moving everything up and down. Kinda resembles tilt ^^
u/iverjo

#tunnel

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iverjo

function u(t) {

for(i=7;i--;)x.fillStyle=R(a=255*!i,a,a,.02+i),r=S(t/7),x.fillRect(!a*(960+900*S(t+i)*r),!a*(515+500*C(t+i)*r),c=20+8*a,c)

Jul 29 2016 5:10 PM UTC

}// 122/140

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This might be a good starting point for creating dweets with rectangles that leave trails. For i = 0 a large, white, semi-transparent rectangle is applied to the entire canvas. For i = 1,2,3,4,5,6 small, black, opaque rectangles are drawn.

u/iverjo

#spiral

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iverjo

function u(t) {

x.fillRect(i=0,87,W=c.width=310,3);x.font='49px A';for(a of'🚂🚃🚃🚃🚃🚃🚃')x.fillText(a,q=W-t%4*W+i++*46,90+S(q/15))

Jul 24 2016 2:14 AM UTC

}// 110/140

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It turns out that this looks different with the Windows 10 Anniversary update

u/iverjo

#train

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iverjo

function u(t) {

for(i=8e3;i--;)s=149/(i+99),c=S(8e4*s),x.fillStyle=R(9,99+49*c,29),x.fillRect(2e3*(T(i/9)+s*t)%2e3,2e3*s,99*s,99*s)

Jul 22 2016 11:39 PM UTC

}// 115/140

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#grass

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iverjo

function u(t) {

w=c.height=1e3;n=99;for(i=n;i--;)s=n/(i*6+n),x.font=s*n+'px A',x.fillText(String.fromCharCode(10052),w+1100*S(s*w*2+t/59),w*(T(i)+s*t)%1200)

Jul 22 2016 3:48 PM UTC

}// 140/140

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u/donbright

oh this is excellent
u/donbright

you can golf this by using fillText('❄',....
u/iverjo

#snow

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iverjo

function u(t) {

P=t/6.3|0;X=S(t);x.fillStyle='red';x.fillText(0,320+256*(X*X*X+P*2.5),500-16*(13*C(t)-5*C(2*t)-2*C(3*t)-C(4*t)))

Jul 20 2016 6:55 PM UTC

}// 112/140

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#hearts

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iverjo

function u(t) {

c.width=2e3;n=900;for(i=9;i++<n;)p=t+i/99,s=4/(9.1-p%9),x.beginPath(),x.lineWidth=s*s,x.arc(n,480+40*s*S(t),s*99,i,i+.9),x.stroke()

Feb 21 2016 9:05 PM UTC

}// 131/140

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u/joeytwiddle

That's beautiful!
u/joeytwiddle

This doesn't fit, but it compresses the lines so they don't overlap: x.lineWidth=s*s*(1+S(t)*S(i+.45)/2)
u/iverjo

#tunnel

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