Dweets awesomed by u/Ameo

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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Ameo

function u(t) {

f=x.fillRect.bind(x);for(w=t;w<1000;w+=(t%10)*5+1){x.fillStyle=R(w%255,w%150,w%200,1.0);f(w,w,w+1200,w+33);f(820-w,w,w+1200,w+50);}

May 2 2018 2:46 AM UTC

}// 131/140

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anthonylewis

function u(t) {

c.width^=0;x.fillStyle=R(0,0,255,0.5)
for(i=38;i--;)for(j=5;j--;)
x.fillRect(i*50,1080,45,(S((i+j)*t)-j)*(t**2%360))

May 2 2018 1:21 AM UTC

}// 116/140

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Tsunami?

u/iverjo

#water
u/BuRRak

t**2 can be replaced with t*t
u/katkip

#waves

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danielwdunn

remix of d/7272 by u/Batrachus

function u(t) {

d=700
for(c.width+=i=0;i<d;){X=S(9*i)
Z=C(55*i)
B=(2-Z*C(t)+X*S(t))/d
x.fillRect(d+(X*C(t)+Z*S(t))/B,d+C(9*i++)/B,.1/B,.043/B)}

May 2 2018 1:20 AM UTC

}// 127/140

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stxxl

function u(t) {

c.width=1920;for(i=1;i<=50;i++){ a=(3.14*2/50)*i; p=300.0/(300.0+500+S(t*2+a)*500); x.fillRect(960+C(t*2+a)*500*p,540+i*5*p,20,20);}

May 2 2018 12:44 AM UTC

}// 132/140

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Ameo

remix of d/933 by u/p01

function u(t) {

for(d=2e3;d--;x.fillRect(970+d*C(a),540+d*S(a),18,6))a=Math.random()*7,x.fillStyle=R(e=4e3*C(t-16e2/d*S(t-a-C(a/d))),99*S(a-e/d),6e4/d)

Feb 23 2017 12:05 AM UTC

}// 135/140

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u/iverjo

Cool!

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jczimm

function u(t) {

c.width=1920;for(i=0;i++<300;)for(j=0;j++<6;x.fillStyle=R(0,0,0,j/8))x.fillRect(960+200*C(i)*S(T(t/-1.1)+j/i),540+200*S(i),10,10);

Feb 22 2017 11:49 PM UTC

}// 130/140

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added opacity

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p01

function u(t) {

for(d=2e3;d--;x.fillRect(960+d*C(a),540+d*S(a),24,24))a=Math.random()*6.3,x.fillStyle=R(e=255*C(t-1e3/d*S(t-a-C(a*99/d))),99*S(a-e/d),6e4/d)

Feb 22 2017 11:45 PM UTC

}// 140/140

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u/sigveseb

Nice!
u/ninerdelta

wow!
u/p01

Thanks :)
u/ArtsyBiker1

Awesome!
u/TheGreatRambler

Messing with my brain!
u/lionleaf

#tunnel

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euvl

function u(t) {

c.width|=0;f=t%2/2;for(i=0;i<10;i++){j=i-f;m=j/9;n=(9-j)/9;x.globalAlpha=0.1-f*(i==0?0.1:0.0002);x.fillRect(960*m, 540*m, 1920*n, 1080*n);}

Feb 22 2017 2:10 AM UTC

}// 139/140

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sfz

function u(t) {

c.width|=0;s=60;tt=t*360;tx=tt%1950;ty=tt%1210;c.style.background='#333';x.fillStyle='#0f8';x.beginPath();x.arc(0+tx,0+ty,s,0,7);x.fill()

Feb 22 2017 1:43 AM UTC

}// 137/140

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francisco

function u(t) {

r=Math.random;for(k=0;k<100;k++){i=2*r()-1;j=2*r()-1;x.fillStyle=i*i+j*j>1?"red":"#000";x.fillRect(i*540+960,540-j*540,10,10)}//francisco.io

Feb 21 2017 11:33 PM UTC

}// 140/140

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