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: #Opposites

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rodrigo.siqueira

remix of d/24777 by u/Vertfromage

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(i=2e3;i--;x.clearRect(i,580+S(i/99-t+C(i/40))*119+S(t/9+S(i-t/8)*7)*2*T(i/429+i),2,2))
x.fillStyle=R(0,54,80,.1)

Jan 18 2022 12:07 PM UTC

}// 140/140

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Waves and Particles

u/ciaccodavide

beautiful!

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rodrigo.siqueira

remix of d/24653 by u/danny@hille.dk

function u(t) {

c.width|=0
for(m=710;m--;x.stroke())X=C(m+t),Y=S(m)*5,x.beginPath(),x.arc(360+600*++X,540+70*Y++,99/(1.5+S(Y-t*3)),0,7)

Dec 30 2021 6:35 PM UTC

}// 119/140

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Live #torus with rotating blobs

u/SophiaCristina

:ooo

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rodrigo.siqueira

remix of d/23948 by u/rodrigo.siqueira

function u(t) {

for(i=k=900;--i;x.fillRect(k+f*C(i*Y),k-Y*q,q*Y,Y*i*v))f=i*t,X=f%3-1,Y=X*f%7-2,x.fillStyle=R(q=i*X,q*=X,q*=Y*Y*Y*q/i/X,i/q/q),v=.3**t/t

Sep 29 2021 1:33 PM UTC

}// 135/140

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Night city from the sea #cityscape

u/LTVA

Hello. I want to use this code in my future game as generator of the part of the background. Also I would try to modify it slightly so generation would be partially random and big "skyscrapers" will have more details (2-color grid representing windows)

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rodrigo.siqueira

function u(t) {

!t&&x.rotate(.7,x.fillRect(0,0,Z=2100,Z),x.translate(Z,0))
for(i=4;i--;x.fillRect(i*50,t*999,50,50))x.fillStyle=`hsl(${i*66},90%,50%,99%)`

Sep 16 2021 9:57 PM UTC

}// 138/140

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Sinclair ZX Spectrum #tribute RIP Sir Clive Sinclair

u/donbright

nice

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rodrigo.siqueira

function u(t) {

K=3.5
if(!t){for(b=-K;b<=K;b++)for(C=-K;C<=K;C++)for(a=-K;a<0;a++)for(X=680;X--;x.fillRect(X*1.7+380,540+Y,2,2))Y=(C*120+a*(X-340))/b*1.5}

Apr 19 2021 4:20 PM UTC

}// 138/140

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Cover of "Computers And Automation And People" magazine, January, 1973. I was able to recreate the image based on a small description (in page 5): "Front Cover Picture: The front cover drawing, called "Phropase", was produced by an Algol 60 program, drawing straight lines ax + by + c = 0, where a, b and c were "stepped arithmetically in nested loops". The computer used was an ICL 1904A, driving a Calcomp 1934/6 plotter. The programmer artist is Nihan Lloyd-Thurston.

u/rodrigo.siqueira

Here is the full journal with it's cover artwork and description: https://archive.org/details/bitsavers_comput… "Computers And Automation And People", Jan., 1973
u/smtsjhr

thats so cool and well done! I find this kind of exercise to be very inspiring : )

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rodrigo.siqueira

remix of d/21871 by u/rodrigo.siqueira

function u(t) {

for(i=2e3,z=-99,y=300,d=0;i--;d+=S(i*i)*9+C(i+t/3)+1)y+=C(d)*5,x.fillRect(z+=C(d)+2,y,1.2,450)
x.clearRect((t/2)%3*700,500+C(t*3)*40,30,9)

Mar 9 2021 8:27 PM UTC

}// 138/140

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Exploring Gond's cave (based on Vanguard #Atari #game)

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rodrigo.siqueira

remix of d/20948 by u/rodrigo.siqueira

function u(t) {

c.width|=0
for(var i=5e3;i--;f(0,K=i%2,280,i))
f=(w,h,q,d)=>q>99?f(C(t*2+K)*h+q*C(d+t),w+q*S(d+t),q/2,i*i):x.fillRect(w+480+930*K,h+510,5,9)

Dec 10 2020 9:43 PM UTC

}// 140/140

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Rotating Double Donuts #torus #donut 🍩🍩

u/TGY

I don't think you need "var" there. It works fine without it :)
u/New_Core

nice, and its 5 FPS faster with the "var" then without on my old machine.

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rodrigo.siqueira

remix of d/20935 by u/rodrigo.siqueira

function u(t) {

for(ⵠ=1e4;ⵠ--;ထ(0,ꖴ=2,280,ⵠ+t,`💡&&⭕⭕➜🍩🍩`))
ထ=(ഠ,𑄗,Ꙭ,ට)=>Ꙭ>99?ထ(𑄗+Ꙭ*C(ට),ഠ+Ꙭ*S(ට),Ꙭ/ꖴ,T(ට*ට+t*ට)/ꖴ):
x.fillRect(ഠ+480+950*(ⵠ%ꖴ),𑄗+510,.4,t<ꖴ)

Dec 9 2020 4:50 PM UTC

}// 140/140

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Illuminated Double Donuts #torus #donut

Show more comments…
u/ciaccodavide

Nice! Double donuts everywhere!
u/pavel

Not a fan of the obfuscated code. Looks nice to people who don't care to understand it but hurts your fellow coders that want to play around with it, which is a big part of Dwitter for me.
u/geb

for(i=1e4;i--;f(0,c=2,280,i+t,💡&&⭕⭕➜🍩🍩)) f=(w,h,q,d)=>q>99?f(h+q*C(d),w+q*S(d),q/c,T(d*d+t*d)/c): x.fillRect(w+480+950*(i%c),h+510,.4,t<c)
u/rodrigo.siqueira

I posted a cleaner version (remix). I usually avoid obfuscated code, but in this case it was for aesthetic reasons and for fun ("donuts everywhere" style). The 💡&&⭕⭕➜🍩🍩 part was just to illustrate, it has no functionality in the code.
u/tomxor

I think Pavel might be refering to unicode tofu, I get this too... the "⭕⭕➜🍩🍩" bit renders but almost all the other non-ASCII chars are tofu. I think it depends on what browser/OS combo you have.
u/tomxor

... and which fonts you've bothered installing.

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rodrigo.siqueira

remix of d/20689 by u/yonatan

function u(t) {

for(i=2e3,c.width|=f=g=>200*(S(i+t*5)-2+C(t*7+i))*g(i*.2855);i--;x.lineWidth=1)x.strokeRect(960+f(C),540+f(S),s=i/29*S(i),s)

Nov 20 2020 4:54 PM UTC

}// 124/140

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Interaction Boids

u/danny@hille.dk

I like it! (tadpole square dance, or square tadpoles dancing?)

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rodrigo.siqueira

remix of d/19764 by u/rodrigo.siqueira

function u(t) {

f=(X,Y,n=222)=>Y*Y>n?n:f(2*X*Y-.6,Y*Y-X*X+.2,n-1);for(i=2e3;i--;x.fillRect(i,t*60,1,1))x.fillStyle=`hsl(${K=f(i/2e3,t/35)},90%,${T(K)*29}%)`

Aug 30 2020 8:12 PM UTC

}// 140/140

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Deep chaos #julia #fractal

u/taupelink

amazing
u/sigveseb

Ooh very nice!
u/magna

So pretty!

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