Random dweets | Dwitter

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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taupelink

function u(t) {

for(i=1e3,d=e=f=0;i--;)x.fillRect(d*640,e*810,1,1),d+=((r=Math.random(l=.6)*4|0)-d+e*f*S(d*3.14))*l,e+=(1-r%2-e+d*e*f)*l,f+=(r%2-f-d*e/3)*l

Aug 7 2019 12:50 AM UTC

}// 139/140

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u/tomxor

Chaos Photographer, Pic 1
u/tomxor

whoops remix fail, soz

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taupelink

remix of d/19559 by u/taupelink

function u(t) {

f=X=>T(X*X)<1?b/S(a):X/f(X+.5);for(i=1440;i--;)a=i/90+(r=Math.random)(),b=i%9+r(),x.fillRect(a*120,b*120,f(q=S(a)*C(b))<f(a*a+b*b),f(1/q)<1)

Aug 24 2020 11:29 AM UTC

}// 140/140

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d/19765

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Renaud___

function u(t) {

l=c.width+=i=0;h=400;for(;++i<200;)for(j=a=(t+C(i))%2;j++<50;)x.fillRect(l*C(i*i)+~~a*(w=a*h-h)*C(j),(~~a?h:a*h)*(C(i)*C(i)+2)+w*S(j)/4,3,3)

Feb 27 2017 12:09 PM UTC

}// 140/140

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Show more comments…
u/HeyJD

This looks amazing. Great job.
u/Renaud___

Thanks :)
u/khalkeus

this is super neat
u/iverjo

Wow!
u/lionleaf

Brilliant!
u/tbroadley

Sweet!
u/donbright

OMG OMG OMG OMG
u/ninerdelta

mind blown
u/sfz

(((does we're not worth bow)))
u/Kalanchoe

That's so beautiful!
u/spbyrne

Incredible
u/Renaud___

wow ... thanks again for all the nice reviews :)
u/punkhaa

mice
u/punkhaa

*nice
u/gormisdomai

I joined this site for this kind of thing
u/lionleaf

On mobile you can tap at different locations for different colors
u/lionleaf

Haha, oops, that comment was for another dweet. This still remains one of my favorites!!
u/sigveseb

golfed to 137: for(l=c.width+=i=0,h=400;++i<200;)for(j=a=(t+C(i))%2;j++<50;)x.fillRect(l*C(i*i)+~~a*(w=a*h-h)*C(j),(~~a?h:a*h)*(C(i)**2+2)+w*S(j)/4,3,3)
u/FireFly

Eternal rains will come… I really like this one, very pretty!
u/zhanglongdream

啊啊啊
u/leonarven

It was really nice to solve the secret of this code! Such simple, but such brilliant! Good job!
u/sb

My favorite
u/arowberry

I love it. Reminds me of my Seattle days.
u/21medals

What does ~~ do? Like in (~~a?h:a*h)
u/Renaud___

It work as a math.floor. actually there is a difference but i dont remember how exactly
u/Renaud___

Dunno what changed in Chrome recently, but now this animation is very very slow :(
u/hollo47

#rain
u/noonat

~ is a bitwise not. It flips all the bits in the number to the opposite. Flipping again (~~) puts the bits back to what they were. It works does something similar to floor because it truncates floats to 32-bit integers as part of the operation. (But unlike floor, ~~-2.1 is -2 instead of -3.)
u/rbong

I did a detailed analysis of this effect in a medium post: https://medium.com/@r.l.bongers/visual-effec…
u/vain

cool raindrop fx

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xyper

remix of d/26288 by u/384.cz

function u(t) {

c.style="filter:invert("
c.width=999
for(i=190;i--;)x.fillStyle=R(i,i*2,255),x.fillRect(199+S(i+t)*i,199+C(i+t)*i,i,i)

Nov 17 2023 4:36 PM UTC

}// 118/140

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inverted

u/xyper

just realised i got it the wrong way around but whatever

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magna

function u(t) {

onclick=e=>T[o=e.y>>5&4|e.x>>7]=o*5%9&3
c.width=200
for(i=8;i--;x.fillText([...'🔲👨👩📺🎥'][T[i]+1|0],(i&3)*50,(i&4)*15+45))x.font='3em"'

Jul 29 2020 2:59 AM UTC

}// 133/140

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Memory Game

u/magna

Find the matching man, woman, tv and cameras!
u/magna

Mouse coordinates need tweaking. Didn't even bother supporting fullscreen.
u/joeytwiddle

#interactive #game
u/joeytwiddle

If you get it in order, you get extra points

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FireFly

function u(t) {

for(c.width|=M=Math,i=2e4;i--;x.fillRect(A*8,B*8,W=9+M.atan2(M.sqrt(1-X*X-Y*Y),X)*3-t*4&7^4-M.asin(Y)*3,W))X=(A=i%135)/67-1,Y=(B=i/135)/67-1

Mar 4 2017 6:26 PM UTC

}// 140/140

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Raycasted rotating sphere with UV-mapping!

Show more comments…
u/sfz

... ??? !!!
u/iverjo

Impressive! I like the c.width|=M=Math hack. Apparently Math is evaluated to NaN in the process.
u/iverjo

http://stackoverflow.com/a/11037887/2319697
u/alien

god... i can't understand this yet but is awesome...
u/sigveseb

So good!
u/donbright

standing ovation
u/tomkh

great job! some tricks here really opens new possibilities
u/mxfh

you can do M.sqrt() with ES6 power operator as **.5 should yield a net gain of 2 chars
u/FireFly

Oh right! I haven't gotten used to it yet since I'm on Fx51, which doesn't seem to support ** yet. Thanks!
u/FireFly

Oh, and also thanks for all the positive responses, everyone :)
u/iverjo

#sphere
u/lionleaf

#disco
u/f8f82804

#halftone #dithering #shading

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prplz

remix of d/9832 by u/prplz

function u(t) {

x.fillStyle='#0001'
x.fillRect(0,0,2e3,2e3)
for(i=70;i-=7;x.clearRect(C(q)*200+960+C(i)*250,S(q)*200+540+S(i)*250,32,32))q=t*4-i*2

Sep 14 2018 8:52 AM UTC

}// 130/140

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u/katkip

"Toxicly" nice.

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rsrsrs

remix of d/12304 by u/pavel

function u(t) {

for(c.width|=i=35;i--;x.rect(r,-r,2*r,2*r))
r=(i-1*t%2)*30,
r*=r>0,
x.setTransform(1,0,0,1,0,540)
x.fill('evenodd')

Mar 17 2019 4:25 AM UTC

}// 115/140

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rodrigo.siqueira

remix of d/18531 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,f=(X,Y,n=11)=>X/Y<n?f(X*X-Y*Y-.8,2*X*Y+.2,n-.3):x.fillStyle=`hsl(0,99%,${n**1.9}%`;i--;x.fillRect(i,t*60,1,999))f(i/490-2,1-t/9)

Apr 29 2020 5:41 PM UTC

}// 138/140

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#Julia set fibers. #fractal similar to "Pickover stalk" and biomorph forms. Using this compact form of the test: X/Y < n

u/rodrigo.siqueira

#pickover

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KilledByAPixel

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝢󩝧󪝮󤍡󭍨󚍴󟽳󭍲󫽫󩝔󩝸󭌨󬜿󙽜󭝄󞌳󡝜󭝄󡌹󝬧󞬧󢭕󤭁󤽓󢝃󘍐󠝒󢼧󛍱󟼶󝜺󜬵󛌹󞜩󞭳󨽡󫍥󚌹󛌹󚜩󛍦󫽮󭌽󨌤󮼨󬜽󭌼󜜩󟼱󞬮󜭽󪝮󘍡󬭩󨝬󨌬󨝲󨼨󞜹󛌴󜬬󭌪󜼶󛌰󛌹󚜬󬽴󬭯󪽥󤽴󮝬󩜽󭌾󝌿󙼣󩭦󩬧󞭴󟌱󛬱󙬡󬜿󙼣󩭦󜌧󞭒󚍱󚬱󩜳󚜬󬽴󬭯󪽥󚌩`.replace(/u../g,'')))

Jun 23 2023 5:00 AM UTC

}// 140/140

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Jurassic Park 🦖

u/Xen

love it!
u/aleamb

cool!
u/magna

ahah