Dweets awesomed by u/Renaud___

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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cantelope

function u(t) {

w=c.width=400
for(i=8;i--;X=w/2+(Z=1/(2+C(p=1.047*i*2+(i<4)+t)))*S(p)*w/2,Y=Z*w/2-w/20,i==3?x.moveTo(X,Y):x.lineTo(X,Y),x.stroke());

Apr 9 2017 10:23 PM UTC

}// 132/140

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🕎 Shalom! 🕎

u/donbright

great use of perspective

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cantelope

remix of d/2452 by u/cantelope

function u(t) {

w=(c.width|=0)/2
x.fillStyle="#64f"
for(i=2e3;i--;x.fillRect(w+S(p=i+t)/(Z=4+C(p)*(h=1+S(i/99-t*4)/2))*w*h,540+1/Z*(i-999)*w/300,s=40/Z,s));

Apr 9 2017 6:17 AM UTC

}// 140/140

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u/magna

<3
u/donbright

loved it, remix w mouse control https://www.dwitter.net/d/2460

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magna

remix of d/2451 by u/cantelope

function u(t) {

x.fillRect(0,0,(w=960)*2,w*2)
for(i=99;i--;p=i/5+t,x.clearRect(w+1/(Z=3+C(p))*(i-50)*w/20,540+S(p)/Z*w,s=199/Z/Z,s))x.globalAlpha=.1

Apr 9 2017 6:01 AM UTC

}// 132/140

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u/cantelope

nice! :)

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cantelope

function u(t) {

x.globalAlpha=.1
x.fillRect(0,0,(w=960)*2,w*2)
for(i=18;i--;p=.7*i+t,x.clearRect(w+1/(Z=3+C(p))*S(p)*w,540+(i<9?.4:-.5)/Z*w,s=199/(Z*Z),s));

Apr 9 2017 12:54 AM UTC

}// 140/140

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fixed a FF bug. apparently it doesn't like the syntax Z**2

u/donbright

this has a really cool look

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joeytwiddle

remix of d/1763 by u/New_Core

function u(t) {

c.onclick=_=>window.a||(a=new AudioContext,o=a.createOscillator(),o.connect(a.destination),o.start(),c.onmousemove=e=>o.frequency.value=e.x)

Apr 8 2017 8:22 PM UTC

}// 140/140

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Starts making noise if you click on the canvas. Hopefully you can silence it by going left, but no guarantees!

u/cantelope

"woooOOOOoooOOOO" :D
u/magna

It's a dweetheremin!
u/joeytwiddle

Yes it is :) More fun with a wider frequency range: o.start());c.onmousemove=e=>o.frequency.value=5*e.x
u/lionleaf

Haha, amazing! Fullscreen gives you a wider audio range :)
u/joeytwiddle

#audio #interactive

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mxfh

function u(t) {

c.width|=b=50
h=b-S(t)*b*5
for(e=6.283;e>0;x.lineTo(d*C(e-=.01)+h*C(s=d/b*e)+960,(d)*S(e)-h*S(s)+540))d=300-b
x.fill("evenodd")

Apr 7 2017 10:55 PM UTC

}// 127/140

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http://mathworld.wolfram.com/Hypotrochoid.ht…

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marc8

function u(t) {

c.width|=i=0
for(b=(m=80)+(f=m+(l=5*m));i<7;i++)"}P7WZOoQ_".charCodeAt(t%10)&2**i&&x.fillRect(i<3?m:i%2?0:f,i>4?b:i>2?m:i*f,r=i<3?l:m,f-r)

Apr 7 2017 1:23 PM UTC

}// 139/140

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u/magna

Awesome!

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toxazol

function u(t) {

x.globalAlpha=.1
x.fillRect(0,0,i=w=2e3,w)
for(j=0.1;j<1;j+=0.009){
x.clearRect(w/2+.4*w*j*C(t*j*100)*C(t),w/4+.2*w*j*S(t*j*100),2/j,2/j)
}

Apr 3 2017 11:53 PM UTC

}// 140/140

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mxfh

remix of d/2391 by u/mxfh

function u(t) {

for(c.width|=X=0,x.setTransform(48,0,0,48,960,540);X<8;x.fill(new Path2D(`M2 9a9 9 0 0 1-6-1l${C(t)*5+5} ${S(t)*3-5}`)))x.rotate(X++?.785:t)

Apr 3 2017 9:27 PM UTC

}// 140/140

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Aperture Science

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magna

remix of d/2396 by u/cantelope

function u(t) {

s='l141 242h-280'
x.fillStyle='#fd0'
x.fill(new Path2D(`M960 299${s+s}m420-242`+s))
x.font='99px a'
x.fillText('トライフォース',607,1e3)

Apr 3 2017 2:58 AM UTC

}// 129/140

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Toraifōsu

u/magna

#triforce

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