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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Food

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rodrigo.siqueira

remix of d/13665 by u/rodrigo.siqueira

function u(t) {

for(w=i=960;i--;x.fillRect(w+w*X/Z,w-w*Y/Z,s=20/Z/Z,t<7))Y=1.2*S(U=i/t)+T(i)**2-4.5,X=2*C(U)*(Y*(S(Y/2)/4)+.1),Z=S(U)*2-6,x.fillStyle=R(i/5)

Mar 31 2020 1:20 PM UTC

}// 140/140

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Wine #glass

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rodrigo.siqueira

remix of d/17404 by u/Xen

function u(t) {

for(i=1e3;i--;x.fillStyle=R(Y*Z,Y,X,.05))t<1.6&&x.fillRect(X=C(z=S(t*i**8)*7+4)*i**1.5,Y=300+S(z/2)*i*t,Z=i*S(t),Z)

Jan 30 2020 2:51 AM UTC

}// 115/140

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Abstract #colors #art

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rodrigo.siqueira

function u(t) {

c.width|=0;x.font=(ℵ=9-t%9)+'in"'
x.fillText(+(+!+[]+(!+[]+[])[!+[]+!+[]+!+[]]+[+!+[]]+[+[]]+[+[]]+[[]+t%2>1?'':1]),980-ℵ*150,480+ℵ*50)

Dec 17 2019 4:04 PM UTC

}// 135/140

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ℵ Obfuscated Infinity. The Googol Number (1 followed by 100 zeroes) is Infinity. #obfuscated by JSFuck. Search for "Writing JavaScript With Only Six Characters" and jsfuck.com

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rodrigo.siqueira

remix of d/16618 by u/KilledByAPixel

function u(t) {

with(x)for(c.width|=z=i=140;i--;fillText(code[i],0,0))save(restore()),translate(2e3+35*i-350*(t%20),T(i+t)*9+540),scale(6,6)
//Hello Dwitter

Nov 13 2019 6:55 PM UTC

}// 140/140

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Falling code #quine

u/katkip

#text

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rodrigo.siqueira

remix of d/16396 by u/KilledByAPixel

function u(t) {

T=t%2
for(i=340;--i;x.fillRect(960+S(m**3)*q*T,540+T*C(m*m+t/8)*q,m/8,m/8))m=i+120*T,q=1e5/i,x.fillStyle=R(T*i*i/140,T*i*i/340)

Nov 1 2019 8:09 PM UTC

}// 127/140

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Volcano explosions from above 🌋

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rodrigo.siqueira

remix of d/16081 by u/rodrigo.siqueira

function u(t) {

for(K=i=830;i--;x.fillStyle=R(i*q/3,i*p,i/3))x.fillRect(S*K+550+S,230-C*K,.8,1),p=C||0,q=S||0,C=(p-q)/2,S=(p+q)/2,T(i**t)|0||(w=S,S=C,S=1-w)

Oct 14 2019 1:26 PM UTC

}// 140/140

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Fractal dragon curve variation #dragoncurve

u/katkip

awesome #fractal

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rodrigo.siqueira

function u(t) {

η=.1
ℵ=1/t
for(X=-3;X<3;X+=.01){
y=X**3-X*2
ℵ=ℵ-η*(ℵ**3-2*ℵ)
x.fillRect(940+X*400,-y*100+500,5,5)
}
x.fillRect(910+ℵ*400,470,60,60)
throw(ℵ)

Aug 21 2019 1:45 PM UTC

}// 140/140

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Gradient Descent (iterative) algorithm used to calculate sqrt(2). The big dots are the two roots -sqrt(2) and +sqrt(2) of equation Y=X**3-X*2. The Gradient Descent is an optimization algorithm for finding a local minimum of a function near a starting point, taking successive steps in the direction of the negative of the gradient. x[n+1]=x[n]−η(∇f)xn where η is the "Learning Rate". Gradient Descent is widely used for training Machine Learning models. #neural #ai

u/rodrigo.siqueira

Simple version that calculates sqrt(2). If you change initial "x" to -1, it will converge to -sqrt(2), that is the other root of the equation Y=X**3-X*2. Code: x = 1; learning_rate = .1; for(i=0;i<50;i++) { x = x - learning_rate * (x**3 - 2*x) } throw(x);

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rodrigo.siqueira

remix of d/13412 by u/rodrigo.siqueira

function u(t) {

if(t<1)with(x)fillStyle=R(9,20,70),fillRect(0,0,42,99),rotate(Math.PI*.8),translate(-420,-800),drawImage(c,0,0,1e3,1e3),translate(-920,-450)

Jun 23 2019 10:23 PM UTC

}// 140/140

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Blue Starfield - color version

u/donbright

rodrigo you are a legend. if you wrote a book i would buy it

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rodrigo.siqueira

remix of d/14654 by u/rodrigo.siqueira

function u(t) {

if(t<14)for(X=Y=S(t*3)*950,x.fillStyle=R(C(Y)*220,Y/9,S(Y)*Y/4),i=1e4;--i;x.fillRect(960+X+Y,380-Y+X,1,1))X=10+Y+Math.abs(Y=-X)/1.08

Jun 19 2019 7:35 PM UTC

}// 132/140

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The Gingerbreadman map is a discrete-timedynamical system. #gingerbreadman

u/joeytwiddle

Vitruvian man 🤚 Gingerbrad man ☝

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rodrigo.siqueira

remix of d/14639 by u/rodrigo.siqueira

function u(t) {

if(t<2){A=Z=a=b=-.1+t/15;s=90
for(i=1e4;--i;)x.fillStyle=R(a*50,b*30,S(b)*s),x.fillRect(800+a*s,310+b*s,.7,.6),
a=1-b+Math.abs(a),
b=A,A=a}

Jun 17 2019 1:59 PM UTC

}// 139/140

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The Gingerbread Man #attractor from dynamical systems theory. "The Gingerbreadman Map is chaotic in the filled region and stable in the six hexagonal regions."

u/katkip

#chaos
u/rodrigo.siqueira

"Even the simplest mathe-matical expressions, when interpreted as dynamical systems, yield fractals." (Robert L. Devaney) #gingerbreadman

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