Dweets by u/leafyvez

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: #ScaryMovies

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leafyvez

function u(t) {

w=c.width;t||(v=u=d=0.1)
c.style.filter=`invert(`
x.fillRect(50*t,w/4+99*v,3,30);v+=d*(v-v**3/9-u+0.5);u+=d*0.08*(v+0.7-u)

Nov 15 2022 1:09 PM UTC

}// 123/140

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FitzHugh-Nagumo model of a neuron #oscillator

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leafyvez

remix of d/17955 by u/joeytwiddle

function u(t) {

for(c.width=i=150,x.fillStyle='#b20';i--;c.style.filter=`blur(8px)contrast(8)invert()`)x.fillRect(74+60*(q=S(i+t)),89-60*C(q),5,2)

Nov 26 2021 4:22 PM UTC

}// 130/140

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electric #arc

u/aleamb

wow!

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leafyvez

remix of d/24373 by u/leafyvez

function u(t) {

c.width=380
w=125
r=Math.random
for(i=n=N=9e2*(t%5)|0;i--;x[d='fillText'](y*y+z*z>1?--n/n:'-',w+w*y,w*z))y=r(),z=r();x[d]('π≈'+4*n/N,w,20+w)

Nov 25 2021 4:51 AM UTC

}// 140/140

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140 chars thanks to yurume!

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leafyvez

function u(t) {

eval(unescape(escape`楦⡴㰲⥻੣⹷楤瑨㴴㔰ੲ㵍慴栮牡湤潭੎㵰慲獥䥮琨㍥㌪琩੦潲⡩㵮㵎㭩ⴭ㭹㵲⠩ⱺ㵲⠩ⱹ⨪㈫稪⨲㸱㼨渭⴬樽✡✩㩪㴧ⴧⱸ⹦楬汔數琨樬ㄲ㔫㉥㈪礬㈰⬲攲⩺⤩㭰㴴⩮⽎੸⹦楬汔數琨✽✫瀬ㄷ㜬㈴〩素`.replace(/u([^D].)/g,'$1%')))

Nov 24 2021 5:22 PM UTC

}// 140/140

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estimating #pi #montecarlo

u/leafyvez

pi ≈ 4 * # points in the quarter circle / total points although it converges rather slowly (~ sqrt(number of points) )

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leafyvez

function u(t) {

eval(unescape(escape`楦⡴㰱〩筢㴳⸱㐊景爨爽孫㵩㴰崻⬫椼㄰⩴㬩牛楝㵫⬽款椦爮楮摥硏昨欭椩㰰㼭椺椬砮扥杩湐慴栨⤬砮慲挨㔰⬸⨨䵡瑨⹭楮⡲孩ⴱ崬牛楝⤫椯㈩ⰵ㐰ⰴ⩩Ⱪ┲⩢Ȿ椥㈪戩ⱸ⹳瑲潫攨⥽`.replace(/u([^D].)/g,'$1%')))

Nov 21 2021 1:41 PM UTC

}// 131/140

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Recamán's sequence!

u/leafyvez

https://en.wikipedia.org/wiki/Recam%C3%A1n%2…
u/leafyvez

learnt the beautiful trick (r[i]=x+= ... ) from https://codegolf.stackexchange.com/a/37639
u/leafyvez

might have to zoom in / fullscreen to avoid moire(?) pattern

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leafyvez

remix of d/24357 by u/leafyvez

function u(t) {

eval(unescape(escape`挮睩摴桼㵷㴵㄰੸⹆㵸⹦楬汒散琊景爨椽㍥㌬瑼砮䘨〬〬椬椩㭩ⴭ㭸⹆⠲⩷⭩⨨匨椩⬲⩓⠲⨨椭琩⤩⽺ⱷ⭩⨨䌨椩ⴲ⩃⠲⩩⤩⽺ⰱ〬㄰⤩稽匨椩ⴱ㠬砮晩汬却祬攽刨〬眬眬〮㌪匨㐪琩⬰⸷⨨㙥㌥椩⽩⤠`.replace(/u([^D].)/g,'$1%')))

Nov 20 2021 10:23 AM UTC

}// 139/140

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more spiraly trefoil

u/magna

Awesome!
u/leafyvez

u/magna thanks (:

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leafyvez

function u(t) {

c.width|=w=500
for(i=3e3;i--;x.fillRect(2*w+i*(S(i-t)+2*S(2*(i-t)))/z,w+i*(C(i)-2*C(2*i))/z,10,10))z=S(i)-17,x.globalAlpha=S(3e4/i)

Nov 20 2021 9:53 AM UTC

}// 131/140

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spiraly trefoil variation

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leafyvez

function u(t) {

c.width|=1
for(i=3e3;i--;)x.fillRect(960+150*(S(i+10*t)+2*S(2*i+5*t)),540+150*(C(i)-2*C(2*i+5*t)),20,20),x.fillStyle=R(150*S(i),0,i*C(5*t))

Nov 18 2021 1:30 PM UTC

}// 139/140

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satisfying trefoil juggle with synced color change (:

u/leafyvez

*jiggle
u/Joachim

#satisfying

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leafyvez

function u(t) {

w=c.width|=1;t||(f=g=v=u=7)
d = Date().slice(16,25)
x.font = '8em"'
x.fillText(d,f,g+100);f+=v;g+=u;if(f<0|f>w/1.4)v*=-1;if(g>960|g<0)u*=-1

Nov 14 2021 6:42 AM UTC

}// 139/140

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#clock

u/leafyvez

had an old tv that did this
u/ciaccodavide

#dvd

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leafyvez

function u(t) {

c.width|=1;w=700;h=800
x.font='19em"'
for(i=9;i--;x.fillText('< >',w+w*S(5*t)/1.5,h+33*i))
x.fillText(',',w+180+w*S(5*t)/1.5,h+300*T(5*t))

Nov 12 2021 2:57 PM UTC

}// 138/140

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angular brackets have achieved their true purpose : catch commas falling from the stars

You've reached the end.

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