Dweets awesomed by u/cantelope

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: #Food

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veubeke

function u(t) {

for(c.width^=0,x.translate(960,i=540);i--;x.fill())for(x.beginPath(k=2),x.moveTo(0,0);k--;)x.lineTo(C(A=(t+k+i*2)*Math.PI/540)*2e3,S(A)*2e3)

Nov 19 2017 8:41 PM UTC

}// 140/140

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https://xkcd.com/1814/

u/magna

AMAZING!

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Xen

remix of d/3035 by u/artfarnaa

function u(t) {

 for(c.width|=a=48;--a;x.arc(960+S(G+t)*321,540+C(t+G)*666*S(t),a%2*99*Math.abs(S(t-G))*5,0,7))x.moveTo(G=a/2,0)
x.fill('evenodd')

Nov 19 2017 6:58 PM UTC

}// 130/140

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Xen

remix of d/1791 by u/Run

function u(t) {

for(i=2e3;i--;x.fillStyle=`hsla(${t*X},80%,50%,.01)`)x.fillRect(X=i-S(t-i)*1e3,400+400*C(t+i)+400*S(X/400+t),90,90);

Nov 19 2017 6:23 PM UTC

}// 116/140

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Fixed for chrome users.

u/joeytwiddle

Chrome changed. I recommend 80%,64%,.01 #rainbow #plasma

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New_Core

function u(t) {

for(c.width|=b=i=99;i--;x.fill())x.beginPath(),x.arc(i%b/3+i%5*500,500+i%b/3,i%b+b*S(t+i%5)+b,0,7),x.fillStyle=`hsl(${i%5*b},99%,${b-i}%)`

Nov 18 2017 8:17 AM UTC

}// 138/140

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the i%b is same as i was just leftover after testing.. ;)

u/13thptr

#balls #shading

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cantelope

function u(t) {

for(R=Math.random,P=Math.PI,i=w=960;i--;x.fillRect(w+S(p=w*R())*S(q)/Z*w,540+C(p)*S(q)/Z*w,1,1))Z=2.1+C(q=(P*(R()>.5?-1:0))+(R()**.5*P/2))

Nov 17 2017 7:54 AM UTC

}// 138/140

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u/joeytwiddle

I found this red and orange cousin: https://www.dwitter.net/d/810
u/joeytwiddle

#stochastic
u/joeytwiddle

#sphere

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lurifax

remix of d/3360 by u/lurifax

function u(t) {

for(x.fillRect(0,0,i=2e3,i);i>0;i-=.2)x.clearRect(960+(350+(e=99*S(t/6))*C(b=i/6.2))*C(d=i%6.29)*C(t)+e*S(b)*S(t),540+(350+e*C(b))*S(d),2,2)

Nov 16 2017 8:38 PM UTC

}// 140/140

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Inverted donut

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Xen

remix of d/3513 by u/New_Core

function u(t) {

for(x.shadowBlur=i=99;i--;x.fillRect(960+i*i/3*S(t*i),500+i*i/3*C(t*i),b=i*4,b))x.shadowColor="#"+frame%1e3

Nov 13 2017 9:55 PM UTC

}// 107/140

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try chrome, FF slows

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New_Core

remix of d/3512 by u/New_Core

function u(t) {

for(c.width|=i=50;i--;x.fillRect(1e3+i*20*S(t+i/99)-i*25,500+i*20*C(t+i/99)-i*25,x.shadowBlur=b=i*50,b))x.shadowColor="#f93",x.rotate(49)

Nov 13 2017 9:29 PM UTC

}// 137/140

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u/magna

Wow!
u/lionleaf

Amazing colours
u/artfarnaa

Spooky cool

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New_Core

remix of d/3511 by u/New_Core

function u(t) {

for(i=160;i--;x.fillRect(960+i*20*S(t+i/9)-i*25,500+i*20*C(t*.9+i/9)-i*25,x.shadowBlur=b=i*50,b))x.shadowOffsetX=0,x.shadowColor="#f93"

Nov 13 2017 9:11 PM UTC

}// 136/140

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New_Core

remix of d/3510 by u/New_Core

function u(t) {

for(c.width|=i=160;i--;x.fillRect(960+i*20*S(t)-i*25,500+i*20*C(t*.9)-i*25,x.shadowBlur=b=i*50,b))x.shadowOffsetX=0,x.shadowColor="#f93"

Nov 13 2017 9:09 PM UTC

}// 136/140

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