Dweets awesomed by u/toxazol

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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nystrand

function u(t) {

p=t?(c.width|=n=960,p.push([7,n*S(t)]),p.map(([a,b,d=0,e=b])=>[f=a+a-d,g=b+b-e,f>n?f+6:a,f>0&g<0?g+g:b+.3,x.fillRect(500+a,n-b,22,22)])):[]

Mar 28 2017 4:58 PM UTC

}// 139/140

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u/donbright

excellent
u/katkip

#physics

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cantelope

function u(t) {

c.width=1920;x.fillStyle="red";g=540;for(i=0;i<g;p=i-t,l=S(p)*i,Z=g-l*C(t),s=g*9/Z,x.fillRect(960+18/(Z*18)*l*S(t)*g,g+C(p)*i/Z*g,s,s),++i);

Mar 26 2017 2:54 AM UTC

}// 140/140

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u/innovati

it's like a sunflower pattern :D

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mxfh

remix of d/2286 by u/mxfh

function u(t) {

c.width|=f=120
for(X=16;X--;)for(Y=8;Y--;x.fillRect(e=49/(1+S(t*4-1.57)/5),e,d=-2*e,d))x.setTransform(a=S(t),b=C(t+Y*3.14),-b,a,X*f+f,Y*f+f)

Mar 24 2017 12:27 AM UTC

}// 140/140

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u/joeytwiddle

Even if this isn't #beesandbombs it is quite like one ;)

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thespite

remix of d/2280 by u/thespite

function u(t) {

w=1920,h=1080,c.width=w,d=.5;for(a=-d;a<d;a+=.02)for(b=-d;b<d;b+=.02){x.fillRect((d+a)*w,(d+b+.15*C(10*Math.sqrt(a*a+b*b)-2*t))*h,40,10)}

Mar 23 2017 6:43 PM UTC

}// 137/140

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keithclark

function u(t) {

for(a=c.width|=0;l=C(t),m=S(t),d=C(a)*S(b=a*1.2502),e=S(a--)*S(b);x.fillRect((d*l+e*m)*h+960,C(b)*h+540,i=h/40-5,i))h=900/(2+(e*l-d*m))

Mar 23 2017 5:49 PM UTC

}// 135/140

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u/recursive

Superbly golfed
u/keithclark

Even smaller: https://www.dwitter.net/d/2298
u/donbright

bravo

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donbright

remix of d/2238 by u/aemkei

function u(t) {

r=500;c.width^=0;
t?φ.push(t):φ=[]
φ.map(φ=>{
x.fillStyle='hsl('+r*C((λ=φ*r)/2)+',99%,50%)'
x.fillRect(C(φ)*S(λ+t)*r+999,S(φ)*r+r,9,9);
})

Mar 21 2017 10:52 PM UTC

}// 138/140

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progressive trance planet

u/sfz

Morten Granau works love it

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New_Core

function u(t) {

c.width=1920;for(i=16;i--;)x.ellipse(1e3+300*S(t+i*.1),500+50*C(t+i*.1),160*S(-i*.5)+160,50*S(i*.1)+5,1.6+.5*S(t*.5),9.5,0,6.3);x.stroke();

Mar 3 2017 3:31 PM UTC

}// 139/140

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Show more comments…
u/sfz

wow creative!
u/sfz

reduced it by about 15 bytes in case you want to try to do something else with the extra room: c.width|=0;for(i=16;i--;)x.ellipse(1e3+300*S(t+i/9),500+50*C(t+i/9),160*S(-i/2)+160,50*S(i/9)+5,1.6+S(t)/2,9,0,7);x.stroke()
u/iverjo

So good!
u/sigveseb

is that a pseudo-3D fish? super nice!
u/donbright

marvellous
u/magna

WAAAAT
u/SpecialAgent

Magnificent depth!
u/joseprio

Really impressive :)
u/Kalanchoe

Amazing!
u/ArtsyBiker1

WHOA
u/gautjac

beautiful
u/21medals

Reduced it ±20 bytes and added beginPath() without changing any values:
u/21medals

for(c.width|=i=16;a=i--/10;x.stroke())x.beginPath(),x.ellipse(1e3+300*S(t+a),500+50*C(t+a),160*S(-i/2)+160,50*S(a)+5,1.6+S(t/2)/2,9.5,0,6.3)
u/New_Core

#fish
u/joeytwiddle

#model
u/Cloud

https://www.dwitter.net/d/17352
u/vain

incredible 3d fish

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mxfh

function u(t) {

d=x.getImageData(0,0,w=c.width=256,h=144);for(i=0;i<h;i++)for(j=0;j<w;j++)d.data[(i*w+j)*4+3]=(i-j&j+i)*t%w;x.putImageData(d,0,0)

Feb 20 2017 3:43 AM UTC

}// 129/140

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Show more comments…
u/jim

This is my favorite demo on Dwitter so far
u/mxfh

first draft on documenting the more obvious parts: https://news.ycombinator.com/item?id=13712558
u/hamptonio

pretty sick
u/mxfh

drone audiosoundtrack paste this:
u/mxfh

;new Audio("data:audio/wav;base64,"+window.btoa('RIFF$WAVEfmt data'+x.getImageData(0,128,c.width,32).data.reduce((data,byte)=>data+String.fromCharCode(byte),''))).play()
u/mxfh

//safer encoding: ;new Audio("data:audio/wav;base64,UklGRiQAAgBXQVZFZm10IBAAAAABAAIAAIAAAAAAAgAEABAAZGF0YQAA"+window.btoa(x.getImageData(0,128,c.width,32).data.reduce((data,byte)=>data+String.fromCharCode(byte),''))).play()
u/Xaviaro

Breathtaking!
u/lionleaf

#fractal #recursive
u/Galaxtone

Of you let it run long enough it returns to the original image but sort of pixelated and a little more and it'll return to the original image

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