Top dweets of all time

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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New_Core

function u(t) {

c.width=2e3;q=150*C(t)+300;x.translate(1e3,500);x.rotate(t);for(i=220;i--;)x.fillRect(i%22*q-q*11,i%20*q-q*11,q,q)

Aug 29 2016 9:13 PM UTC

}// 114/140

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a shorter version with zoom and centerd of my first dweet

u/iverjo

Awesome!
u/lionleaf

I'm getting a slight hint of vertigo here :D
u/New_Core

#checkerboard
u/Lazy1337

#rotozoom

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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

remix of d/387 by u/iverjo

function u(t) {

for(w=i=955;i--;)x.fillStyle=R(a=w*!i,a,a,.1+i),x.fillRect(!a*(w+w*S(d=i/42)*S(b=42*i+t)),!a*w*(C(d)+T(t/9+d)),s=18/(S(d)*S(b+4.7)+2)+8*a,s)

Aug 1 2016 12:54 AM UTC

}// 140/140

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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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iverjo

function u(t) {

w=c.width=300;x.fillRect(0,87,w,3);x.font='49px A';for(i=7;i--;)x.fillText(String.fromCharCode(55357,56989-(i?0:27)),310-t%4*210+i*46,90)

Jul 22 2016 8:54 PM UTC

}// 137/140

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Choo choo

u/sigveseb

Looks very different on different platforms, but hella creative! Nice ^^
u/iverjo

Yeah, it seems that it works correctly only in FF, Opera and Chrome on Windows. Thanks :)
u/iverjo

#train

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PhiLho

function u(t) {

c.width=W=400;D=16;H=D/2-1;
for(h=W;h-=D;)for(v=W;v-=D;){s=H*C(t*h/30);n=H*S(t*v/30);x.moveTo(h+s,v+n);x.lineTo(h-s,v-n);x.stroke()}

Jul 22 2016 2:24 PM UTC

}// 132/140

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u/iverjo

This runs at 2-3 FPS in Firefox on my laptop because of the missing x.beginPath(). Here's a version that runs at a much higher framerate: c.width=W=400;for(h=W;h-=16;)for(v=W;v-=16;){s=7*C(t*h/200);n=7*S(t*v/200);x.beginPath();x.moveTo(h+s,v+n);x.lineTo(h-s,v-n);x.stroke()}
u/PhiLho

Good to know, thanks.

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iverjo

remix of d/276 by u/iverjo

function u(t) {

c.width=500;x.translate(250,95);M=(3*S(t*2)-1)/2;for(j=66;j--;)x.translate(9,0),x.rotate(M*.1+(1-M)*((j+8)%21?0:2.1)),x.lineTo(0,0),x.fill()

Jul 21 2016 1:10 AM UTC

}// 140/140

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I name it "morphalicious" :P

u/iverjo

#morph

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iverjo

function u(t) {

c.width=500;x.translate(250,40);M=(1+S(t*2))/2;for(j=66;j--;)x.translate(9,0),x.rotate(M*.1+(1-M)*((j+6)%16?0:1.57)),x.lineTo(0,0),x.fill()

Jul 20 2016 11:31 PM UTC

}// 139/140

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#morhp

u/iverjo

I meant #morph

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yellcorp

function u(t) {

n=40;x.globalAlpha=.5;x.drawImage(c,-n,-n,2e3,1160);x.fillStyle=R(99+99*C(t),0,99+99*S(t*=5));x.fillRect(960+C(t*=.7)*n,540+S(t*1.3)*n,n,n);

Jul 19 2016 11:48 PM UTC

}// 140/140

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u/iverjo

Sweet!

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3bl3gamer

function u(t) {

c.width=192;x.translate(96,54);x.beginPath();for(i=0;i<7;i+=.01){r=(S(i*10+t*5)*3+20)<<1;x.lineTo(r*C(i),r*S(i))};x.stroke()

Jul 19 2016 9:27 PM UTC

}// 124/140

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u/aleamb

How?? Only 3 awesomes? This dweet is fuking awesome.
u/PiggyClone205

Then why didn't you awesome it yourself?