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/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/14046 by u/rodrigo.siqueira

function u(t) {

c.width|=0;for(var w=960,i=8e3;i--;){var 
X=C(i**2)*1.3,
Y=S(i)*S(K=X*2-t)/2-1,
Z=C(i)*C(K)/2-2;
x.fillRect(w+w*X/Z,w*Y/Z,5,5)}

May 22 2019 2:51 AM UTC

}// 127/140

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The Thing

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rodrigo.siqueira

remix of d/14045 by u/rodrigo.siqueira

function u(t) {

if(t==0)for(w=960,i=6e4;i--;){k=.5
Y=S(i)/2
H=Math.cosh(Y/k)
X=k*H*C(u=3.2*S(i/832))
Z=k*H*S(u)-1.8
x.fillRect(w+w*X/Z,w*Y/Z+500,s=4/Z/Z,s)}

May 21 2019 6:41 PM UTC

}// 140/140

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Catenoid is the surface formed by the revolution of a catenary. It is a Minimal Surface. Soap film attached to twin circular rings will take the shape of a catenoid.

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rodrigo.siqueira

remix of d/14045 by u/rodrigo.siqueira

function u(t) {

c.width|=0;for(var w=960,i=6e3;i--;){var θ=6*C(i**2)-7.5,X=-θ/3-2.5,Y=C(i)*S(θ+t)/2-.7,Z=C(i)*C(θ+t)/2-1.5;x.fillRect(w+w*X/Z,w*Y/Z,6,6)}

May 21 2019 5:30 PM UTC

}// 137/140

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Archimedes screw

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rodrigo.siqueira

remix of d/14043 by u/rodrigo.siqueira

function u(t) {

if(t<2)for(w=960,i=8e3;i--;){
ρ=9*C(i+t)
θ=16*Math.random()-8
X=-θ/8
Y=θ*C(θ)/13-.7
Z=ρ*C(ρ/2)/17-1.5
x.fillRect(w+w*X/Z,w*Y/Z,s=1/Z/Z,s)
}

May 21 2019 5:01 PM UTC

}// 139/140

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Trigonometric Road

u/robbyg

#bacon

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rodrigo.siqueira

remix of d/14040 by u/rodrigo.siqueira

function u(t) {

if(t<3)for(w=960,i=3e3;i--;){
ρ=9*C(i/10)
θ=C(t*t*i)+t*2
Y=-θ/5-.4
X=ρ*S(2*θ)/12
Z=ρ*C(2*θ)/22-2
x.fillRect(w+w*X/Z,w*Y/Z,s=2/Z/Z,s)
}

May 21 2019 3:00 PM UTC

}// 134/140

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Helicoid parametric equation. The Helicoid is the minimal surface having a circular helix as its boundary.

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rodrigo.siqueira

function u(t) {

if(t<3)for(w=960,i=8e3;i--;){
ρ=9*C(i+t)
θ=18*Math.random()-9
X=θ/8
Y=ρ*S(1*θ)/16-.7
Z=ρ*C(5*θ)/25-1.5
x.fillRect(w+w*X/Z,w*Y/Z,s=1/Z/Z,s)
}

May 21 2019 1:56 PM UTC

}// 140/140

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Twisted Helicoidal Surface

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rodrigo.siqueira

remix of d/13928 by u/rodrigo.siqueira

function u(t) {

if(t<5)for(i=5e3,w=960;i--;x.fillRect(w+w*X/Z,w*Y/Z/4-Z*600-2300,s=30/Z/Z,s))
r=Math.random,
X=r()*16-8,
Y=r()*16-8,
Z=S(s=X*X+Y*Y)/(s)-5

May 20 2019 4:28 AM UTC

}// 137/140

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Sombrero equation (Z) using random numbers for X and Y

u/katkip

Water drop

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rodrigo.siqueira

function u(t) {

p=t*629
r=420-t*140
X=S(p)*r
Y=-C(p)*r
x.lineTo(X+940,Y+540)
x.stroke()

May 18 2019 9:41 PM UTC

}// 71/140

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Rotating triangles

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rodrigo.siqueira

function u(t) {

for(i=55;i--;)
x.fillStyle=R(K=T(i+t*2)*99,K,K*2),
x.fillRect(999+S(i/5+t)*80-i*9*(S(t)+3),720-i*35,r=50*i,r)

May 18 2019 2:23 AM UTC

}// 109/140

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Tunnel of light

u/rodrigo.siqueira

#tunnel

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