Dweets awesomed by u/Xen

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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lionleaf

remix of d/421 by u/lionleaf

function u(t) {

c.width=2e3;x.font='99px Arial';v='Write long then shorten!';for(i=v.length;i--;)x.fillText(v[i],i*79+S(t+i)*10,540+S(t*9+i)*20)

Aug 17 2016 5:49 PM UTC

}// 128/140

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You can now enter more than 140 characters while writing a dweet! (But you can't post anything longer than 140 characters)

Show more comments…
u/iverjo

Sweet :) I remember removing maxlength=140 in my dev console when creating dweets at arkt.is/t/ ^^
u/PhiLho

Yes, that's what I did here as well... :-D Ah, except I get an alert dialog on each character beyond 140! Not very practical to type. The red counter should be enough...
u/PhiLho

And apparently we can now safely replace semi-colon with newline, even on Windows! (they counted as two chars, previously...)
u/iverjo

Yes, that alert should be removed. Luckily, one can suppress it in FireFox by checking the checkbox inside the alert
u/lionleaf

Ooops, I never got the alert for some reason. And I didn't see this before now. Should be fixed now.
u/lionleaf

#feature

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iverjo

function u(t) {

for(i=2e3;i--;)x.fillStyle=R(a=255*!i,a,a,i/3e5),x.fillRect(!a*(956+968*S(i+t)),!a*(535+540*C(i/42)),c=9+8*a,c)

Jul 29 2016 4:19 PM UTC

}// 111/140

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Let's call this one "60s CRT TV". Wait around 20 seconds to let the effect converge.

u/iverjo

Featuring vignette and scanlines/pixelated grid
u/iverjo

#texture
u/iverjo

#waitforit

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sigveseb

function u(t) {

r=s=>Math.random()*s;for(m=i=128;i--;x.fillText('❄',r(2e3),r(2e3)))x.fillStyle=R(W=m+r(m),W,W*1.5);x.drawImage(c,S(t/13)*S(t/11),.5)

Jul 28 2016 3:28 AM UTC

}// 132/140

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u/iverjo

Beautiful! Looks like a misty storm of some sort
u/sigveseb

#rain

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chet

remix of d/369 by u/chet

function u(t) {

c.width=i=255;a=(z,Y)=>{for(X=25;X--;){x.fillStyle=R(i-7*X,z*2,-z*2);x.fillRect(X+z+i/2,Y,1,i)}};for(Y=i;Y>179;Y--)a(C(-8*t+Y*.1)*Y*.4,i-Y)

Jul 25 2016 2:36 PM UTC

}// 139/140

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elrod

function u(t) {

c.width=120;j=0;while(j<5){i=0;while(i<5){x.fillRect(i*25,j*7,20,5);i++}j++};x.fillRect(47,60,25,5);x.arc(60,12*S(t*6)+47,2,0,6);x.fill();

Jul 22 2016 9:53 AM UTC

}// 138/140

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3bl3gamer

function u(t) {

c.width=1e3;x.font='30pt Arial';for(i=200;i--;)x.fillText(c[i],i*5,x[i]),!x[i]--&&(c[i]=String.fromCodePoint(128267+i),x[i]=600+(i*i*i)%598)

Jul 22 2016 1:13 AM UTC

}// 140/140

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u/sigveseb

So many unimplemented emojis on Android!

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iverjo

remix of d/286 by u/iverjo

function u(t) {

t=t%4;if(t<.1)r=X=Y=0,W=c.width=960,H=540;for(i=W*4;i--;)x.fillRect(X=(X+S(r+=.5-Math.random())%W+W)%W,Y=(Y+C(r)%H+H)%H,A=5/(1+t*9),A)

Jul 21 2016 1:21 PM UTC

}// 134/140

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u/sigveseb

almost looks like a map!
u/joeytwiddle

Whoa! When I was younger I used to have nightmares about this damn thing. I would clean it all away but then it would come creeping back. Weird that you found it in 2016!
u/iverjo

#random

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raurir

function u(t) {

w=1920,h=1080;c.width=w;for(i=0;i<h;i+=2.4){a=C(t/60)*i;x.beginPath();x.arc(w/2+S(a)*i*(4+S(t)*0.2),h/2+C(a)*i*4,i*(S(t)+2)/8,0,7);x.fill()}

Jul 20 2016 9:35 PM UTC

}// 140/140

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u/iverjo

Quite pleasing

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3bl3gamer

function u(t) {

c.width=192;for(i=63;k=Math.abs(S(t*4)),a=i*.1+t,i--;)x.fillRect(96+C(a)*25,79+S(a)*25*(k<.2?k*2+.5:1)-k*50,1,1),x.fillText(7,i*4-t*70%9,99)

Jul 20 2016 9:19 AM UTC

}// 140/140

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u/sigveseb

nice
u/joeytwiddle

#bounce

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chunnoo

remix of d/180 by u/chunnoo

function u(t) {

x.beginPath();r=512;p=20*Math.PI*t;x.moveTo(r*C(p-1)+960,r*S(p-1)+540);x.lineTo(r*C(t)+960,r*S(t)+540);x.stroke();

Jun 8 2016 6:02 PM UTC

}// 114/140

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