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/16596 by u/rodrigo.siqueira

function u(t) {

c.style.filter='invert(';for(c.width|=i=50;i--;x.fillText('Dwitter',C(t)*8-9,S(t)))x.setTransform(a=S(t*3)*i,0,0,a,960,650),x.globalAlpha=.1

Nov 16 2019 3:08 AM UTC

}// 140/140

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Perspective letters #Dwitter #Text

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rodrigo.siqueira

remix of d/16181 by u/New_Core

function u(t) {

for(i=1920;i--;)x.fillStyle=R(A=99+i*S(S(i/99+t)*3+15*S((B=C(t))+2*C(i/90)/C(t/8))),A/2,A/5-B*30),x.fillRect(i,1078,1,2)
x.drawImage(c,0,-2)

Oct 20 2019 9:40 PM UTC

}// 140/140

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Upflow

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rodrigo.siqueira

remix of d/14668 by u/rodrigo.siqueira

function u(t) {

if(t<16){
var r=Math.random,i=X=X0=r()*999,Y=r()*800-400
for(i=1e4;--i;){
X=230+Y-Math.abs(Y=-X)/2
x.fillRect(970+X+Y,450-Y+X,.8,1)
}}

Jun 19 2019 2:54 PM UTC

}// 134/140

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Lozi Map, from the nonlinear dynamics of The Wonderful World of Hamiltonian Maps. #gingerbreadman equation

u/katkip

!
u/Qwitter

Nice SOS, clever golf: X=230+Y-Math.abs(Y=-X)/2

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rodrigo.siqueira

remix of d/14643 by u/rodrigo.siqueira

function u(t) {

var i=A=a=b=1+t*1.3,s=110
for(i=2e4;--i;)x.fillStyle=R(-a*15*(K=t%2),-a*4*K),x.fillRect(1680+a*s,s+b*s,1,1),a=1-b+Math.abs(a)/2,b=A,A=a

Jun 18 2019 11:38 AM UTC

}// 135/140

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Ornament details from the Gingerbreadman #attractor #gingerbreadman

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rodrigo.siqueira

remix of d/14643 by u/rodrigo.siqueira

function u(t) {

if(t<1.1){A=Z=a=b=-5+t*4;s=35
for(i=1e4;--i;)x.fillStyle=`hsl(${a/t},50%,40%`,x.fillRect(850+a*s,410+b*s,1,1),a=1-b+Math.abs(a)/1.2,b=A,A=a}

Jun 18 2019 1:01 AM UTC

}// 140/140

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Gingerbreadman with ornamental borders #attractor #gingerbreadman

u/joeytwiddle

Gingerbread man hiding inside a psychedelic tooth

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rodrigo.siqueira

remix of d/14486 by u/rodrigo.siqueira

function u(t) {

if(t<18){Y=S(t)*999,X=t*Y
for(i=7e3;i--;)ℵ=Y,Y+=S(Y+X),X+=ℵ,x.fillStyle=R(Y*60,i/55,t*8),X%=τ=Math.PI*2,Y%=τ,x.fillRect(X*310,Y*330,1,1)}

Jun 7 2019 8:14 PM UTC

}// 137/140

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Phase-space of the Standard Map - color version. It is constructed by a Poincaré's surface of section of the kicked rotator, as described here: https://en.wikipedia.org/wiki/Standard_map

u/Xen

love it!

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rodrigo.siqueira

function u(t) {

q=Array(500).fill(0);for(j=3e3;j--;){N=0;for(i=42;i--;){
 N-=~(Math.random()*2) // coin toss
}q[N]++;x.fillRect(N*63-3e3,980-q[N]*2,35,2)}

May 28 2019 12:57 AM UTC

}// 138/140

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Toss a Coin many times, sum the results and repeat. The result is the Bell Curve (Normal Distribution). #statistics

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rodrigo.siqueira

remix of d/9880 by u/Quant1um

function u(t) {

c.width|=0
for(i=9e3;i--;x.fillRect((n-o)*20,(n+o+p*2)*17,3,3))var j=C(i*i)*3,a=9+j*S(m=i/2+t),n=C(i+t)*a+40,o=S(i)*a-a,p=j*C(m)

May 23 2019 7:04 PM UTC

}// 128/140

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Möbius strip is a looped surface with only one side and only one edge. #uncompressed #128bytes #d3

u/pavel

c.width%=i=9e3

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rodrigo.siqueira

remix of d/14057 by u/rodrigo.siqueira

function u(t) {

c.width|=0;for(var w=960,i=9e3;i--;){var 
X=C(i**2)*1.3,
Y=S(i)*C(K=X*T(t)-t)/2-1,
Z=C(i)*S(K)/2-2;
x.fillRect(w+w*X/Z,w*Y/Z,4,4)}

May 22 2019 3:04 AM UTC

}// 130/140

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Twisting the tube

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rodrigo.siqueira

remix of d/13039 by u/rodrigo.siqueira

function u(t) {

c.width|=0
for(var i=6e3,w=960;i--;x.fillRect(w+w*X/Z,w*Y/Z,4,4))
X=S(i-t)+3*S(2*i)+C(i**2)/2,
Y=C(i-t)-2*C(2*i)+S(i**2)-4,
Z=S(3*i+t*4)-8

May 9 2019 7:46 PM UTC

}// 138/140

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Animated Trefoil Knot #d3

u/rodrigo.siqueira

#Trefoil #knot

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