Dweets awesomed by u/robbyg

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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robbyg

function u(t) {

t||(X=[...Array(50).keys()],Y=[...X]);for(i=50;i--;)h=X[i],x.fillRect(X[i]=950+(S(1*Y[i])-C(2*h))*440,Y[i]=550+(S(3*h)-C(4*Y[i]))*230,5,5)

Jun 8 2018 5:53 PM UTC

}// 138/140

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Peter de Jong attractor. Changing the 1, 2, 3, 4 multipliers in the sine/cosine functions changes the shape.

u/robbyg

#attractor
u/rodrigo.siqueira

Robbyg, here is a smaller version with higher resolution. Same equation, no need to create array: t||(h=X=Y=0);for(i=950;i--;) X=950+(S(1*Y)-C(2*h))*440, Y=550+(S(3*h)-C(4*Y))*230, h=X,x.fillRect(X,Y,1,1)

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magna

function u(t) {

t||(d=c.cloneNode()).getContext('2d').fillText('🐱',0,15)
T.valueOf=Math.random
s=55
x.drawImage(d,X=T*20,Y=T*20,T,T,X*s+580,Y*s,s*T,s*T)

Jun 7 2018 3:04 AM UTC

}// 137/140

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A three-way adversarial deep neural network learning to draw a cat.

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u/DataMeta

this is clever af
u/BirdsTweetCodersDweet

How is it a neural network? You're just drawing random squares on a cat emoji :P
u/pythech

whoosh
u/magna

Yeah, sorry, it was a bad joke. Just transferring random rectangles from an off-screen canvas. The only catch is the use of valueOf to cut down on the function call ()s.
u/iverjo

Clever indeed!
u/rodrigo.siqueira

#neural
u/katkip

#ai

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veubeke

remix of d/8399 by u/veubeke

function u(t) {

d=new Date%2
for(H=a=60;a--;)for(b=H;b--;x.fillRect(a+t*60%32*H,y,2,2))y=(d?H-a:a)/2+b+(t*60>>5)*30-H,x.fillStyle=R(255-y/5,b&&(d+3)*60-b)

Jun 5 2018 9:04 PM UTC

}// 138/140

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u/Xen

Love it!
u/yokljo

new Date%2 is incredible
u/lionleaf

Amazing! #maze
u/pythech

dope
u/magna

Veubeke strikes again.
u/katkip

A-maze-ing
u/katkip

#d3

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veubeke

function u(t) {

r=Math.random
for(a=2e3;a--;x.fillRect(a,b,9,9))_=r(b=r()*960)*200>Math.hypot(a-960,b-400)-99,x.fillStyle=R(s=(_?7:r()+2)*40,s,220+_*r()*20)

Jun 5 2018 12:11 PM UTC

}// 140/140

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u/joeytwiddle

#sun in #sky or possibly reflected in #water aka #sea aka #ocean
u/aleamb

amazing!

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Xen

remix of d/8395 by u/robbyg

function u(t) {

for(c.width|=i=2e3;i--;)x.fillRect(i,S(i)*t*t,3,C(t-i)*1e3)

Jun 4 2018 11:43 PM UTC

}// 59/140

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bonus for 30seconds+

u/DataMeta

this is cool all the way to the 'end'
u/joeytwiddle

#wait_for_it

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robbyg

function u(t) {

c.width|=0;for(i=214;i--;)x.fillRect(i*9,0,9,(S(i+t)+1)*540)

Jun 4 2018 6:41 PM UTC

}// 60/140

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#short

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loni_art

function u(t) {

t?(d=X+.1*(Y-X),e=Y+.01*(X*(28-Z)-Y),Z+=.01*(X*Y-8/3*Z),X=d,Y=e,x.fillRect(Z*20+o,X*20+o,9,9)):(X=.2,Y=Z=2,d=e=o=550,x.globalAlpha=.2)

Jun 4 2018 6:35 PM UTC

}// 134/140

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Lorentz

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u/loni_art

#chaos
u/loni_art

to have fun: modify the x,y,z variables
u/DataMeta

Amazing... It's like pseudo orbital mechanics! This inspired me to finally try something in "3D"
u/zanella

Been wanting to do a Lorentz system ever since I first saw Dwitter. Congrats! :)
u/BirdsTweetCodersDweet

#Lorenz #Attractor #lorenz #attractor #lorenzattractor
u/Mannaggia

<3

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yokljo

function u(t) {

x[s="fillStyle"]=R()
x[b="globalAlpha"]=0.04
x[o="fillRect"](0,0,w=1920,h=1080)
x[s]=R(w)
x[b]=1
for(i=50;i--;)x[o]((t*h/i)%w,(t*h*i)%h,t,9)

Jun 4 2018 1:35 PM UTC

}// 140/140

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pythech

remix of d/8364 by u/BirdsTweetCodersDweet

function u(t) {

for(c.width|=i=1e3;i--;)x.fillRect(S(t+i*((~t)/10))*i+960,i,W=i/9+2,W)

Jun 4 2018 1:54 AM UTC

}// 70/140

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BirdsTweetCodersDweet

remix of d/855 by u/mxfh

function u(t) {

r=480,g=t+1/r;c.width=r*4;λ=0;for(φ=a=Math.PI/2;φ>-a;φ-=1/r){λ+=a;x.lineTo(C(φ)*S(λ-g)*r+2*r,(C(g)*S(φ)+S(g)*C(φ)*C(λ-g))*r+r)}x.stroke()

Jun 3 2018 1:59 PM UTC

}// 137/140

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