Dweets awesomed by u/ellisk1

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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Current theme challenge: #Opposites

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jbl

function u(t) {

c.width=i=2e3
while(--i)p=S(T=S(t/4)/12*i)*i,K=C(T/2)*i,x.fillStyle=R(k=99-i/9,k*2,k*3),x.fillRect(p+1e3,((C(T)+6)*i-p)/4,K/4+30,K/6+20)

Jan 2 2018 10:03 PM UTC

}// 136/140

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u/aliassheep

This would make a great intro sequence for an art or writing program or something

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hoplite

function u(t) {

i=w=c.width=2e3;for(;i>0;i-=9)for(k=0;k<1e3;k+=9)a=S(t)*2,q=i-w/2,p=k-540,z=(5+S(t*2))*9,C((q*a+p)/z)+C((p*a-q)/z)<S(t)||x.fillRect(i,k,9,9)

Jan 2 2018 1:14 PM UTC

}// 140/140

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u/iverjo

Best rotozoom I've seen on dwitter!
u/sigveseb

Solid stuff
u/iverjo

#rotozoom

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Zikoat

function u(t) {

t||(a=Array(s=30).fill(r=s*5));for(i=s;i;x.fillRect(a[i]+=(Math.random()-.5)*s,a[--i],s,s))x.fillStyle=R(...[1,3,5].map(b=>(S(t+b+i)+1)*r))

Jan 2 2018 10:38 AM UTC

}// 139/140

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colorful random walkers

u/tangjurine

nice
u/alfredrasam

THIS IS SO PRETTY I'VE JUST BEEN STARING AT IT FOR THE PAST 10 MINUTES
u/joeytwiddle

#virus #outbreak

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crimbles

function u(t) {

t||x.translate(980,540)
for(var i=0;i<1500;i++){
x.fillStyle=R(C(t/i)*i,S(i/t)*i,T(t)*i)
x.fillRect(i,t,S(t)*2,C(t)*i);x.rotate(S(T(i/t)))}

Jan 2 2018 8:12 AM UTC

}// 139/140

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The longer you watch, the weirder it gets

u/sigveseb

Rocks
u/iverjo

Novel!

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ellisk1

function u(t) {

q=600;x.strokeStyle=R(r=t%2*150,99-r);b=6*Math.random();x.beginPath();x.moveTo(q+r*C(b),q+r*S(b));x.lineTo(q+r*C(b+1),q+r*S(b+1));x.stroke()

Jan 2 2018 12:10 AM UTC

}// 140/140

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ellisk1

function u(t) {

a=c.width=2e3;for(i=9;i--;){q=i+i*t/9;x.fillStyle=R(a*C(i),a*S(i),25,.5);x.fillRect(0,a+S(q)*a,a,99*S(i));x.fillRect(a+C(q)*a,0,200*C(i),a)}

Jan 1 2018 4:27 AM UTC

}// 140/140

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ellisk1

remix of d/4450 by u/ellisk1

function u(t) {

c.width|=0;a=1e3;x.arc(a,545,255,22/7,44/7);for(i=9;i--;){d=i*55;x.fillStyle=R(a,a/i,80);x.fill();x.fillRect(a-d/2+20*S(t*(9-i)),a-d,d,40)}

Jan 1 2018 1:11 AM UTC

}// 139/140

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u/sigveseb

Fresh!
u/iverjo

#sun

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ellisk1

function u(t) {

x.fillRect(0,0,q=c.width=2e3,q);for(i=q;i--;){r=100+(i/1e2)**4/t;z=6*S(i)+t*i/r;x.fillStyle="#fff";x.fillRect(1e3+C(z)*r,500+S(z)*r,5,5)}

Jan 1 2018 1:04 AM UTC

}// 137/140

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u/lionleaf

Awesome! A rotating black hole?
u/ellisk1

Yep! A black hole was the inspiration!!
u/donbright

awesome, closest thing to blackhole ive seen on here
u/rcdr18

What a great idea! :)

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ellisk1

remix of d/5048 by u/ellisk1

function u(t) {

c.width|=0;for(i=200;i--;){w=(110-i/2)**2;q=5*t+i*C(i);x.fillStyle=R(0,0,0,1+.4*C(q));x.fillRect(1e3+w*S(q)/30+S(t+i/9)*20,5*i,9+9*C(i),25)}

Jan 1 2018 12:15 AM UTC

}// 140/140

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u/joeytwiddle

Tornado!

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ellisk1

function u(t) {

c.width|=0;for(i=10;i<93;i++){x.fillStyle=R(0,120,0,.7+.2*C(5*t+i*C(i)));x.fillRect(1e3+(110-i)**2*S(5*t+i*C(i))/30+S(t+i/3)*20,i*10,10,25)}

Dec 31 2017 11:39 PM UTC

}// 140/140

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