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/12083 by u/rodrigo.siqueira

function u(t) {

X=Y=t;for(i=3e3;i--;x.fillStyle=`hsl(${C(X)*99+S(Y)*80},20%,50%)`)h=X,x.fillRect(X=950+(S(1*Y)+C(1*X))*440,Y=550+(C(3*h)-S(3*Y))*150,1,1)

Feb 1 2019 8:21 PM UTC

}// 137/140

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The kiss #attractor

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rodrigo.siqueira

remix of d/12078 by u/robbyg

function u(t) {

X=Y=t;for(i=3e3;i--;x.fillStyle=`hsl(${C(X)*90+S(Y)*60},20%,50%)`)h=X,x.fillRect(X=950+(S(1*Y)+C(3*X))*440,Y=550+(C(4*h)-S(1*Y))*230,1,1)

Feb 1 2019 8:13 PM UTC

}// 137/140

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Folded surface

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rodrigo.siqueira

remix of d/12078 by u/robbyg

function u(t) {

X=Y=t;for(i=3e3;i--;x.fillStyle=`hsl(${850+C(X+Y)*290},92%,20%)`)h=X,x.fillRect(X=950+(S(3*Y)-C(3*X))*440,Y=550+(S(3*h)-T(3.5*Y))*200,1,1)

Feb 1 2019 8:02 PM UTC

}// 138/140

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Artwork based on @robbyg #attractor rework

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rodrigo.siqueira

remix of d/12037 by u/thorbear

function u(t) {

u=v=t,a=b=.2*S(t)+1.2,c=.7,s=250,x.globalAlpha=.2;for(i=4e3;--i;)w=S(a*v)-c*C(a*u),v=S(b*u)+C(b*v),u=w,x.fillRect(650+s*u*2.5,880+v*s*2,1,1)

Feb 1 2019 6:56 PM UTC

}// 140/140

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Brushstroke (Hassan Massoudy style). #attractor

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rodrigo.siqueira

remix of d/12039 by u/rodrigo.siqueira

function u(t) {

W=t;for(y=i=950;i--;)x.fillRect(X=950+(S(3*y)+C(W))*440,y=550+(S(3*W)+C(2*y))*230,1,1),W=X

Feb 1 2019 4:12 AM UTC

}// 90/140

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Golfed #attractor in 90 bytes

u/thorbear

nice!

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rodrigo.siqueira

remix of d/12039 by u/rodrigo.siqueira

function u(t) {

t||(X=[...Array(K=2e3).keys()],Y=[...X]);for(i=K;i--;)h=X[i],x.fillRect(X[i]=950+(S(1*Y[i])-C(1*h))*540,Y[i]=540+(T(2*h)-C(4*Y[i]))*260,1,1)

Feb 1 2019 12:58 AM UTC

}// 140/140

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Peter de Jong equation. "the legs" #attractor

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rodrigo.siqueira

remix of d/12039 by u/rodrigo.siqueira

function u(t) {

t||(X=[...Array(850).keys()],Y=[...X]);for(i=850;i--;)h=X[i],x.fillRect(X[i]=950+(S(2*Y[i])-C(1*h))*290,Y[i]=550+(S(2*h)-C(1*Y[i]))*260,1,1)

Feb 1 2019 12:41 AM UTC

}// 140/140

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De Jong's Attractor - coeficients: 2, 1, 2, 1

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rodrigo.siqueira

remix of d/8503 by u/robbyg

function u(t) {

t||(X=[...Array(950).keys()],Y=[...X]);for(i=950;i--;)h=X[i],x.fillRect(X[i]=950+(S(1*Y[i])-C(2*h))*440,Y[i]=550+(S(1*h)-C(4*Y[i]))*230,1,1)

Feb 1 2019 12:28 AM UTC

}// 140/140

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Peter de Jong attractor (with variables A=1, B=2, C=1, D=4)

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rodrigo.siqueira

remix of d/12018 by u/rodrigo.siqueira

function u(t) {

a=b=t;s=2e3;x.globalAlpha=.2;for(i=s;--i;)x.fillStyle=R(a*i,9,i*b/6),
x.fillRect(1100+a*s,b*s,2,2),a=.2+.1*S(2*b)+C(2*a),b=S(a/5)+C(b)*t/12

Jan 31 2019 6:44 PM UTC

}// 139/140

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Bifurcation over chaotic maps. Feigenbaum constant may hide somewhere. #fractal

u/rodrigo.siqueira

#bifurcation

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rodrigo.siqueira

remix of d/12001 by u/thorbear

function u(t) {

X=t/6;Y=2;s=999;x.globalAlpha=.05;for(i=3e3;i--;)
Y=1.66-2*(.1*X-S(1.2*Y)),
x.fillRect(X*s,Y*s-700,3,3)

Jan 31 2019 2:25 PM UTC

}// 103/140

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Bifurcation diagram attractor of the logistic map. xₙ₊₁ = r * xₙ(1-xₙ). Bifurcation diagrams enable the visualization of bifurcation theory. #fractal

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