Dweets awesomed by u/zox

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: #ScaryMovies

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snydej

remix of d/6785 by u/PietPtr

function u(t) {

with(x)for(i=364;i--;beginPath(fill()))for(fillStyle=`hsl(${(t+i)*79},50%,50%)`,j=6;j--;)lineTo(i%28*79+50*C(s=j+j/21),i%26*45+50*S(s))

Feb 14 2018 7:21 PM UTC

}// 135/140

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akm

remix of d/6670 by u/akm

function u(t) {

c.width|=0
with(x){for(i=140,l=500;i--;lineTo(m,k))n=S(t-i*C(.1*t))*3e2,arc(m=i*18-120,k=-n+l,30,0,6.283,moveTo(m+220,n+l))
fill(stroke())}

Feb 14 2018 3:56 AM UTC

}// 139/140

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aleamb

function u(t) {

c.width=512;b=136;for(y=b;e=0.7*y,f=y-60,f*=f,y-=2;)for(m=b;m--;)d=m-70,z=S(t)*b*Math.exp(-1e-3*(f+d*d)),x.fillRect(m+e+b,-z+e+100,1,1)

Feb 14 2018 1:37 AM UTC

}// 135/140

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Shorter version: c.width=512;b=136;h=60;for(a=b*b;a--;)m=a%b-h,y=a/b-h,e=0.7*y,x.fillRect(m+e+100,S(t)*b*Math.exp(-1e-3*(y*y+m*m))+e+150,1,1)

u/iverjo

Further, 0.7 can be replaced with .7
u/aleamb

#function #p3d
u/aleamb

#math
u/aleamb

#d3

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zox

function u(t) {

c.width|=0;for(i=0;i<100;i++)for(j=0;j<6;j++){
x.fillStyle=R(i,450/j,450)
x.fillRect(960+500*C(i)*S(t+C(j*t)+S(i)),540+500*S(i),11,11)
}

Feb 4 2018 9:37 PM UTC

}// 136/140

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ellisk1

remix of d/5056 by u/ellisk1

function u(t) {

x.fillRect(0,0,q=c.width=2e3,q);for(i=q;i--;)r=99+i**4/7e7/t,x.fillStyle="#fff",x.fillRect(1e3+C(z=i%q*i+3e2*t/r)*r,1e3+S(z)*r-i,8+6*S(z),5)

Jan 3 2018 3:46 PM UTC

}// 140/140

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A little remix of my black hole dweet

u/RomanW

Really fantastic!
u/iverjo

Nice 3D effect!
u/M1T0

very impressive
u/lionleaf

#tunnel #black_hole #tornado
u/vain

Looks so great!

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Xen

remix of d/3167 by u/Xen

function u(t) {

for(i=c.width|=0;i--;x.fillRect(960+S(p=.9*i+S(t)*3e3/i*S(t))*(d=i*i/1e3)-i*C(t),540+C(p)*d-i*S(t),s,s))x.fillStyle=R(Z=t*i%255,s=i/5,255-Z)

Jan 2 2018 9:31 PM UTC

}// 140/140

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Show more comments…
u/jbl

WOW! 💯
u/lionleaf

Testing new links u/Xen
u/Xen

Yay! d/5309
u/donbright

i would have said this was impossible if i didnt see it
u/lionleaf

#alien #needle #color #floppy #rotation
u/sybarita

Yo what ... this is amazing
u/mrperson59

Is this what sleeping beauty pricked her finger on?

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travisdoesmath

function u(t) {

a=256;b=8
for(i=1;i<128;i++) {
  x.fillStyle = R(60*t%a,120*t%a,180*t%a)
  x.fillRect(((60*t^i)%128)*b+448, 28+i*b, b, b)
}

Jan 2 2018 2:35 AM UTC

}// 124/140

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u/nickd3000

This is really cool, nice magic to find the x Coordinate
u/Xen

love it

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sadropol

function u(t) {

c.width|=0;for(i=1;i<140;i++){b=2*t+i;o=(S(b+5)*226)%256;x.fillStyle=R(o,o,o,1);x.fillRect(940+S(b)*200,6*i+(1.3*i)*399%400,8,8);}

Dec 26 2017 11:40 PM UTC

}// 130/140

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u/sigveseb

nice helix!
u/vain

very nice

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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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New_Core

function u(t) {

c.width=2e3;for(a=i=629;i--;)s=-150/((i+t*60)%a),X=a*S(i*.31)*s+1e3,Y=a*C(i*.3)*s+500,x.fillRect(X,Y,s*9,s*9),x.lineTo(X,Y);x.stroke();

Jan 17 2017 4:08 PM UTC

}// 135/140

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Show more comments…
u/Ameo

That's ridiculously impressive.
u/Ameo

That's ridiculously impressive.
u/Ameo

That's ridiculously impressive.
u/ilSilvano

That's three times ridiculously impressive.
u/joeytwiddle

I feel like god is pulling all the thread out of the universe
u/hope4tg

Haha, agree with joey, the zoom out effect is awesome
u/Lazy1337

#d3
u/katkip

#infinite
u/vain

really impressive

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