Top dweets by u/rodrigo.siqueira

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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rodrigo.siqueira

remix of d/17222 by u/tomxor

function u(t) {

c.style='filter:invert(1'
for(a=b=0,i=1e4;i--;x.fillRect(a*960,680-b*540,1,.2))r=0|9*S(i*i)**2/8,a+=r-a/4+b*S(a*3)/3,b+=r*t/4-a*b/2+C(a*3)/3

Jan 26 2020 7:28 PM UTC

}// 140/140

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Spiral fibers

u/tomxor

wow, feels like ice hairs at the start
u/katkip

#spiral
u/katkip

It gets more beautiful if you #waitforit

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rodrigo.siqueira

remix of d/17258 by u/pavel

function u(t) {

for(i=c.width|=p=(((K=t<5)?(t/8)**4:1)+t/5e4);i--;x.arc(960,540,1e3/z,b=(i*S(i*p))/20,b))z=1+(i>>12)+C(i*p);x.fill()

Jan 18 2020 11:46 PM UTC

}// 116/140

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From order (in the beginning there was void) to chaos (dynamic interactions).

u/katkip

haha nice!!!
u/Odog8

how dis work!??
u/joeytwiddle

It's a lot of overlapping triangles. To see: 5e4),i=99;i--
u/joeytwiddle

(sort of "triangles") Similar effects: d/915 and d/11742

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rodrigo.siqueira

remix of d/16995 by u/pavel

function u(t) {

for(let i=5e3,j,s;j=--i>>4;x.fillRect(960+(j%8*2+i%2-7.5)*s,C(2/t)*570+(i%16-8.5+9)*s,s,s))x.fillStyle=R(s=600/((j>>3)+1-t*30/11%1),s/2,s/4)

Dec 30 2019 12:05 AM UTC

}// 140/140

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#perspective #squares

u/rep_movsd

#underrated
u/deobfuscate

Yes, please destroy my mind.

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rodrigo.siqueira

function u(t) {

for(c.width=w=i=2e3;i--;)
X=S(i*i),Y=S(i),ℵ=C(Math.atan2(X,Y)-t)*Math.hypot(X,Y),
K=w/2,x.fillRect(w*ℵ/(Z=4+C(t)+X*X-Y*Y)+K,w+K*(ℵ-6)/Z,7,8)

Jun 26 2019 7:01 PM UTC

}// 140/140

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The Hyperbolic Paraboloid (z=x²-y²). The S(i*i) and S(i) are random number generators between -1 and +1. The atan2 and hypot are used to calculate 3d object rotation (Euler equations could also be used, as seen on /d/12086). Thanks to u/cantelope for the Tiny 3D Engine Tutorials: https://cantelope.org/tiny_3D/ and https://cantelope.org/3D/ #math #hypot #D3 #hyperbolic #surface

u/cantelope

:D
u/rodrigo.siqueira

There is an interesting fact that the Pringles potato chips are a truncated hyperbolic paraboloid. The strength of the shape helps to prevent them from breaking while stacked. The curvature of the shape improves resistance to tension and compression forces. Remember this next time you eat a hyperbolic paraboloid.

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rodrigo.siqueira

remix of d/14642 by u/rodrigo.siqueira

function u(t) {

A=Z=a=b=t-3;s=180
for(i=1e4;--i;)x.fillStyle=R(a*55,b*20,S(b-a)*99),x.fillRect(850+a*s,350+b*s,.7,.8),
a=1-b+Math.abs(a-S(a+2))/2,
b=A,A=a

Jun 17 2019 3:04 PM UTC

}// 138/140

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Patterns from the Gingerbread Man #attractor

u/Xen

sexy!
u/katkip

Nice #chaos
u/rodrigo.siqueira

#gingerbreadman
u/iverjo

Fascinating!
u/Qwitter

Wow, islands, everywhere

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rodrigo.siqueira

remix of d/14338 by u/rodrigo.siqueira

function u(t) {

v=(a,b,Φ,r)=>{for(i=0;i++<r;)x.fillRect(a-=S(Φ),b-=C(Φ),s=r/40,s)
r>2&&v(a,b,Φ+Math.random()-.5,r*=.82)}
t<4&&v(940,1e3,0,45*t)

Jun 3 2019 6:43 PM UTC

}// 127/140

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Growing root #organic #fractal #tree

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rodrigo.siqueira

function u(t) {

eval(unescape(escape`挮睩摴桼㴰㭸⹦楬汒散琨〬〬㉥㌬㉥㌩㭸⹴牡湳污瑥⠹㘰ⰵ㐰⤻景爨椽㌵〻椭ⴻ⥸⹦楬汓瑹汥㵠桳氨⑻椫琪㤹紬㠵┬㘵┩怬砮牯瑡瑥⠱⭴⼹㤩ⱸ⹦楬汒散琨椫㄰〬〬㌬椭㌵〩`.replace(/u(..)/g,"$1%")))

May 27 2019 1:35 AM UTC

}// 124/140

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HypnoCycle #colors #hypnotic

u/KilledByAPixel

👍 Cool
u/aaaaaz

Nice one

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rodrigo.siqueira

function u(t) {

Y=x.globalAlpha=.1
for(i=4e3;i--;){Y=t/3+S(i)+9/(.1+Y*S(i+t));x.fillRect(90*t,99*Y,1,1)}

Apr 23 2019 1:30 PM UTC

}// 88/140

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Shadows of a non-linear world

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rodrigo.siqueira

remix of d/12312 by u/robbyg

function u(t) {

c.width|=B=(X,Y,A,L,h,v)=>L>7&&(x.lineTo(h=X+C(A)*L,v=Y-S(A)*L),B(h,v,A-t/8,L*.73),B(h,v,A+t/2,L*.73))
B(800,890,1,260)
x.stroke()

Feb 12 2019 10:36 PM UTC

}// 130/140

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Plants, thorns and dragon curves #fractal

u/katkip

Wow! Amazing
u/robbyg

I was hoping someone would come up with something better to do with that function. Awesome! :)

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rodrigo.siqueira

remix of d/34092 by u/zachygreen

function u(t) {

eval(unescape(escape`𮀮𬡥𬱥𭀨𪰽𜐰𝐰𚐻𩡯𬠨𪐽𫐽𜀻𪐼𜐹𝠹𜀻𪐫𚰩𮱮🐱𞱌👪🐾𪐥𜰪𚡪𛰳𚠪𚁪𛐱𚑼𜀻𩡯𬠨𮠽𜀻𮠼𞐻𮠫🐲𚑮🐨𫠫𣀨𮠩𛑌𚁺𚰱𚐩𚠨𜐫𤰨𭀫𪐩𛱴𛱴𛐲𚠨𪐥𜰪𚠨𮠫𜠩𛰳𚠪𮠦𜐩𚐻𮀮𫁩𫡥𥁯𚀨𫐫🐲𛠵𚡃𚁮𛰽𛠹𝐵𚐩𚰳𜠱𛁫𛐽𜠮𜰪𤰨𫠩𚑽𮀮𬱴𬡯𪱥𚀩`.replace(/u../g,"")))

Jul 8 2025 2:04 PM UTC

}// 140/140

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Sierpinski curve formation in 7 seconds #sierpinski

u/cantelope

#nuts

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