Dweets awesomed by u/BriSeven

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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BriSeven

remix of d/531 by u/BriSeven

function u(t) {

for(i=0;i<512;i++)x.fillStyle=R((d=((t*10)%400*i/32)|0)%256,d/1.4%256,d/7%256),x.fillRect((Math.random()*1080&i)-(i/2)+1920/2,i*2,20,2)

Dec 23 2016 12:59 AM UTC

}// 135/140

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Sierpinsky Tree, Sierpinski Tree, forever smaller triangles!

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BriSeven

function u(t) {

!t?X=[]:0;for(i=99;i;)o=X[i],X[i]=(o+Math.random()*8-4)%2e3||1e3,x.fillStyle=R((d=119*i)%256,d/1.4%256,d/7%256,.5),x.fillRect(o,X[--i],8,8)

Dec 23 2016 12:45 AM UTC

}// 139/140

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u/iverjo

To save one character (avoid the exclamation mark), you can do t?0:X=[]; or X=t?X:[];
u/BriSeven

ah yes, thank you

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lionleaf

remix of d/537 by u/Atti

function u(t) {

for(i=2e3;i--;)a=i<5,x.fillStyle=a?i%2?"red":"white":"#080",d=i/3+80*T(i%300/260),x.fillRect(900+(a?i*S(i)*99:-d),a?400+i*200:i,a?50:2*d,50)

Dec 22 2016 6:04 PM UTC

}// 140/140

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Merry Christmas! Golfed version of Atti's original too long proposal from #537

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Atti

function u(t) {

x.fillStyle="green";for(i=1085;i--;){d=i/3+80*T(i%300/260);x.fillRect(950-d,i,2*d,1)}

Dec 22 2016 5:15 PM UTC

}// 85/140

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Basic Christmas tree! :)

u/Atti

A more elaborate version, that's currently too long: for(i=1085;i--;){x.beginPath();x.fillStyle=i<5?i%2?"red":"white":"green";d=i/3+80*T(i%300/260);i>5?x.rect(950-d,i,2*d,1):x.arc(900+i*S(i)*100,400+i*200,50,0,6);x.fill()}
u/Atti

Any help is appreciated in building an epic Dwistmas tree!
u/iverjo

Nice :) I made one last year, using a very different technique: https://www.dwitter.net/d/98
u/Atti

Cool! :)

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AndrewBetts

remix of d/532 by u/AndrewBetts

function u(t) {

x.fillStyle=R(S(t)*255,C(t)*255,T(t)*255,.1),x.fillRect(600+(S(t/2)>=0?0:400)+200*C(t)*(S(t/2)>=0?1:-1),400+200*S(t),99,9)

Dec 22 2016 3:10 PM UTC

}// 122/140

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u/lionleaf

Nice remix! I'm getting some Google logo vibes to begin with
u/iverjo

I get that 3D feeling

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Atti

function u(t) {

c.width=1920;b=S(10*t);for(i=0;i<16;i++){a=S(t*i);x.fillRect(120*i,500-200*a*b,100,500+200*a*b)}

Dec 22 2016 3:10 PM UTC

}// 96/140

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BriSeven

remix of d/530 by u/BriSeven

function u(t) {

r=Math.random;for(i=0;i<1024;i++)
x.fillStyle=R((d=(t%220*i/64)|0)%256,d/1.4%256,d/7%256),
x.fillRect((r()*1080&i)-(i/2)+1920/2,i*.9,2,2)

Dec 22 2016 4:08 AM UTC

}// 137/140

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u/iverjo

At first I didn't realise it was multicolor. It gets interesting after 20 seconds, when the green color crawls from the bottom, and other colors follow

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BriSeven

function u(t) {

r=Math.random;for(i=0;i<1080;i++)
x.fillStyle=R((d=119*(i/68|0))%256,d/1.4%256,d/7%256),
x.fillRect((r()*1080&i)-(i/2)+1920/2,i*.9,2,2)

Dec 22 2016 3:00 AM UTC

}// 135/140

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In case you're looking at this and wondering where the Sierpinsky pattern is coming from, it's here: &i

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BriSeven

remix of d/526 by u/BriSeven

function u(t) {

for(i=16;i--;)x.fillStyle=R((d=i*S(t)*7+119*i)%256,d/1.4%256,d/7%256,.1),x.fillRect(120*i+30*S(13*t%i)+50,500*C(t/13)+500,30*S(t/i*3)+10,40)

Dec 22 2016 1:27 AM UTC

}// 140/140

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a slight variation that happens to look IMHO a fair bit more pleasant and glassy.

u/iverjo

Candy land! :D

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BriSeven

remix of d/522 by u/BriSeven

function u(t) {

for(i=16;i--;)x.fillStyle=R((d=119*i)%256,d/1.4%256,d/7%256),x.fillRect(i*160+S(t)*300-300,0,160,1080)

Dec 22 2016 1:10 AM UTC

}// 102/140

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Same functionality, but smaller, using advice from previous commenters.

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