Dweets awesomed 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: #Opposites

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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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taupelink

remix of d/24361 by u/taupelink

function u(t) {

for(m=2e3;X=1+S(m),Y=S(m*m--);x.fillRect(1e3*X,540*(1+Y),i/t,q/a))a=t**.5,i=m%256,q=m/8,x.fillStyle=R(i*=C(Y/6+t)/t,q*=S(X/2+t)/a,q-i,.05)

Nov 21 2021 9:16 AM UTC

}// 138/140

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d/24363

u/taupelink

#waitforit
u/taupelink

I really just kind of stumbled on this effect. I started out trying to animate d/24361, but then I forgot to clear the screen with each loop execution, and I noticed shadows forming...
u/taupelink

...and it turns out there's something about the way that X=1+S(m),Y=S(m*m--) do NOT function as pseudo-random formulas in this dweet. If you replace the X formula with X=2*Math.random() you just get noise....
u/taupelink

Maybe what's happening is that locally, the width and height formulas act like piecewise-continuous trigonometric functions. Hence the curvy-yet-segmented little shapes.

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taupelink

remix of d/24339 by u/taupelink

function u(t) {

for(m=t?0:1e4;X=1+S(m),Y=6*S(m*m--);x.fillRect(1e3*X,90*(6-Y),q,p))i=m%256,q=m/40,p=256-i^q,x.fillStyle=R(p-q,q,i-q,(5*i/p/q)**2)

Nov 20 2021 4:38 PM UTC

}// 129/140

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d/24361

u/Joachim

Oooohh, I like this

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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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taupelink

remix of d/24334 by u/taupelink

function u(t) {

for(m=t?0:4e4;X=1+S(m),Y=3*S(m*m--);x.fillRect(1e3*X,180*(3+Y),q,i))i=m%256,x.fillStyle=R(q=i*(1-C(m%Y)),q^=m/i,q*=S(X)-Y,(2+S(X*X-Y*Y))/20)

Nov 14 2021 12:20 AM UTC

}// 140/140

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d/24336

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