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.

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DirtyDan

remix of d/5459 by u/DirtyDan

function u(t) {

c.width=1920;p=Math.PI*2;x.beginPath();a=540;for(i=0;i<480;i++){b=p*(i/480)*T(t/4);x.lineTo(0,a+a*S(b));x.lineTo(i*4,a+a*-S(b))}x.stroke()

Jan 4 2018 5:06 PM UTC

}// 138/140

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Optimized for coolness/smoothness

u/coderkid

Dweet #5500 ! :D

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jaemiejaemie

function u(t) {

c.width=640;var n=~~(t*36)%36,s=140,d=320,e=180,p=6.2831;x.beginPath();for(var i=1;i<=n+1;i++)x.lineTo(d+s*C(i*p/n),e+s*S(i*p/n));x.stroke()

Jan 4 2018 3:56 PM UTC

}// 140/140

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polygon renderer, n = amount of sides

u/jaemiejaemie

pi*2 is approximated, original code borrowed from https://stackoverflow.com/questions/4839993/…
u/d0n.key

https://www.dwitter.net/d/8998 You can shorten it down easily - look at this for your next dweet.

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sandromiccoli

function u(t) {

x.fillStyle=R(0,0,0,0.9);for(i=0;i<1920;i++)x.fillRect(i*2+T(t/1000+T(i)*100),t*10^519,1,C(t+i)*100^S(100))

Jan 4 2018 11:40 AM UTC

}// 108/140

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morton

function u(t) {

a=128;b=256;c=Math.floor;s=c(t*10);r=t%14;x.fillStyle=R((s*367+92)%b,(s*572)%b,(s*936)%b);x.fillRect((a*c(r*10))%1920,c(r*10*a/1920)*a,a,a)

Jan 4 2018 9:35 AM UTC

}// 139/140

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u/iverjo

Nice algorithm for generating many different colors. This is the kind of color set you could use when plotting many different variables in the same plot.

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ankrgi

function u(t) {

d=20;c.width=2e3;for(i=0;i<1920/d;i+=2)x.fillRect(i*d,520*S(t+i)+520,2*d,d);

Jan 4 2018 4:41 AM UTC

}// 77/140

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moflow

remix of d/5361 by u/moflow

function u(t) {

c.width=240;z=99;v='Samy is my hero!';for(i=v.length;i--;)x.font=9+'px',x.fillText(v[i],49+9*i+S(t*t),z+S(123*t)*30)

Jan 4 2018 2:50 AM UTC

}// 116/140

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malectro

function u(t) {

a=40
b=255
c.width=1080
for(i=0;i<a;i++){j=i/a
x.fillStyle=R(b-j*b,b-j*b,b,1-j)
x.fillRect(S(t+i/10)*200+400,C(t+i/10)*200+200,i*10,i*10)}

Jan 4 2018 2:01 AM UTC

}// 139/140

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u/chrisbarless

beauty!

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chagas

function u(t) {

x.fillRect(980+980*S(t*4),399+232*C(t*11),2*t,300)
x.fillStyle=R(C(t),230*C(9*t),S(t))

Jan 4 2018 1:57 AM UTC

}// 87/140

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nim442

function u(t) {

for(i=0;i<1;i++)
x.arc(1000,500,(Math.abs(600*S(t))),-t,-i*Math.PI*t)
x.stroke()

Jan 4 2018 12:51 AM UTC

}// 80/140

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lowpoly

function u(t) {

for(o=10;o--;)with(c){if(!t){i=j=k=l=1;w=width=399;h=height=101;}k*=(i<=0||i>=w)?-1:1;l*=(j<=0||j>=h)?-1:1;x.fillRect(i+=k,j+=l,1,1)}

Jan 4 2018 12:47 AM UTC

}// 133/140

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Hello guys. I need ideas on how can i optimize this thingie :)

u/lowpoly

and yea, the k*=(i<=0||i>=w)?-1:1; l*=(j<=0||j>=h)?-1:1; part concerns me most
u/joeytwiddle

Well this is 2 chars shorter: if(j<=0||j>=h)l=-l; // and this is the same: (j<0||j>h)&&(l=-l); // You could also drop the four =s for a small loss in quality.
u/sigveseb

Looks nice!