Dweets by u/Feiro

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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Feiro

function u(t) {

eval(unescape(escape`砮獴牯步⠩㭯湭潵獥浯癥㵲㴨椬瘬戬䬩㴾瘿砮汩湥呯⡶ⱢⱣ⹷楤瑨簽䄽䵡瑨⹡瑡渲ⱌ㵟㴾筲⡩ⴱⱶ⬹㤪䌨䬽卛楝㼿〩Ɫ⬹㤪匨䬩⤻卛楝㵋⭁⡍⹹ⵢⱍ⹸⵶⤭䄨搭戬猭瘩紬椿䰨䰨⤩㨨猽瘬搽戩⤺爨㘬㤶〬㔴〬䴽椩`.replace(/u(..)/g,"$1%")))

Jun 16 2020 11:14 PM UTC

}// 140/140

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Inverse Kinematics! (works best in full screen)

u/Feiro

uncompressed: x.stroke();onmousemove=r=(i,v,b,K)=>v?x.lineTo(v,b,c.width|=A=Math.atan2,L=_=>{r(i-1,v+99*C(K=S[i]??0),b+99*S(K));S[i]=K+A(M.y-b,M.x-v)-A(d-b,s-v)},i?L(L()):(s=v,d=b)):r(6,960,540,M=i)
u/katkip

awesome #physics
u/tomxor

Nice! strangley broken in FireFox though
u/tomxor

Oh it's the new nullish coalescing operator ??

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Feiro

function u(t) {

c.width=a=y=1920
while(a--)x.fillStyle=R(a&256,a&204,205/t),x.fillRect((a+t*100)%y,0,9,32),a>8||x.drawImage(c,T=a<<5,T)&x.drawImage(c,T-y,T)

Jun 9 2020 12:59 AM UTC

}// 140/140

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From spring to summer

u/doughno

is it possible to fix the occasional glitching?

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Feiro

remix of d/8739 by u/firegodjr

function u(t) {

with(x)for(fillRect(0,0,k=2e3,k);k--;beginPath(fillStyle="#0001"))arc(960,540,k/4,v=k%4*1.57+S(t*3-k/280)+t,v+.2),strokeStyle="red",stroke()

Jun 28 2018 11:07 AM UTC

}// 140/140

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red is shorter than any other color! :D

u/firegodjr

Looks like a rose :D
u/Agnes

For the record, strokeStyle="tan" is as short as red.
u/magna

R(k) also seems to work
u/zanella

You can replace 1.57 with 1.6, and use this extra byte to use hex colors instead of red, like #0f0. ;)
u/zanella

Or, if you want to keep it really precise, replace *1.57 with /.64.

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Feiro

function u(t) {

eval(unescape(escape`潮捬楣欽弽㹻瀽湥眠䅵摩潃潮瑥硴⠩㭯㵰⹣牥慴敏獣楬污瑯爨⤻漮捯湮散琨瀮摥獴楮慴楯温㭯⹳瑡牴⠩㭦潲⡲㴱㈹㭲ⴭ㬩漮晲敱略湣礮獥瑖慬略䅴呩浥⡲㸾㜿〺㐴〪ㄮ〵㤴⨪⡲☱㼭㐺⡔帽㌩⬨爾㸵☱⤩Ⱳ⼹⥽`.replace(/u(..)/g,"$1%")))

May 28 2018 11:01 AM UTC

}// 139/140

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Click the canvas to be Thunderstruck! ⚡⚡

Show more comments…
u/Feiro

#audio #compressed
u/sigveseb

very nice ^^
u/S.T.L.K.R.

https://www.youtube.com/watch?v=uT3SBzmDxGk
u/highfestiva

Wooaaa! :D
u/sukkamehu

how does this work
u/katkip

This is awesome

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Feiro

function u(t) {

t||(p=new AudioContext(),o=p.createOscillator(),o.connect(p.destination),o.start())
o.frequency.value="昳餠胃胃胃状昳昳衫衫胃胃状状昳".charCodeAt(t*3)/100

Feb 18 2018 7:55 PM UTC

}// 140/140

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Guess the song! :D

u/Feiro

Bug in Dwitter: the sound continues after you've scrolled beyond the dweet.
u/BuRRak

This is so cool xD

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Feiro

function u(t) {

for(a=6.28,w=960,h=540,c.width|=0;a>0;a-=.02){
	x.moveTo(w+h*C(a),h+h*S(a));
	x.lineTo(w+h*C(a*t),h+h*S(a*t))
}x.stroke();

Feb 14 2018 1:23 PM UTC

}// 122/140

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It began as a quick experiment to generate the Cardioid, bacause of today. Swap 't' for 2 to see it. Happy valentine's day!

u/Feiro

To clarify: Cardioid comes from 'heart' in Greek.
u/aleamb

cool!
u/fons

it is like venus pattern :D
u/Yogeshp3

was my very first dweet :) https://www.dwitter.net/d/5238

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Feiro

function u(t) {

y=[0]
p=q=720
!t&&(d=(s)=>{
for (a=y.length;a--;y.push((y[a]+1)%4),y[a]%2?q+=y[a]-2:p+=1-y[a])
x.lineTo(p,q)
++s<19&&d(s)
})(0)
x.stroke()

Feb 13 2018 5:02 PM UTC

}// 138/140

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My first dweet! You guys here are awesome! I am glad that I am finally a part of this community!

u/Feiro

By the way the official name of the fractal is Dragon curve
u/Xen

very nice! , i have a few dragon curves if you scroll my page
u/joeytwiddle

Welcome Feiro! Thanks for the dragon, just before Chinese new year!
u/zanella

Welcome! And hooray for fractals!! :)
u/Apex

Love the dragon curve. Nice job, welcome!

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