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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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

show FPS hide FPS share 1 remix fullscreen

rodrigo.siqueira

remix of d/27506 by u/rodrigo.siqueira

function u(t) {

for(x.fillRect(0,0,w=2e3,w),i=1e4;i--;x.clearRect(960+S(p=t/T(i**2))/(Z=(i/T(t+i)+i*i/380)/i/i),540+C(p)/Z,K=3*S(i+t),K))x.globalAlpha=.1

May 15 2023 8:34 PM UTC

}// 137/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Vortex of Energy

u/tomxor

Also Quake1 logo... for a while.
u/deobfuscate

Looks a lot like cooler as fire: x.fillStyle=R() for(x.fillRect(0,0,w=3e3,w),x.fillStyle=R(255,100),i=2e4;i--;x.fillRect(960+S(p=t/T(i**5))/(Z=(i/T(t+i)+i*i/380)/i/i),540+C(p)/Z,K=3*S(i+t),K))x.globalAlpha=.3
u/deobfuscate

(not golfed btw)
u/andrea270872

Wow!
u/jdspugh

Great!

show FPS hide FPS share 1 remix fullscreen

rodrigo.siqueira

remix of d/27499 by u/rodrigo.siqueira

function u(t) {

for(x.fillRect(0,0,w=2e3,w),i=1e4;i--;x.clearRect(960+S(p=T(i**5))/(Z=1/i/(t%3)+1/(t<3?i:480)),540+C(p)/Z,K=3*S(i)+1,K))x.globalAlpha=.1

May 10 2023 1:19 PM UTC

}// 136/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Star pulse #sphere

u/deobfuscate

I cannot explain with words how cool this is.
u/donbright

if i undersand it, the "twinkling" really adds alot. they aren't all the same size of white particle?
u/rodrigo.siqueira

The "twinkling" is given by the particle size (2 last parameters of x.clearRect). Pixel size is defined by 3*S(i)+1, so it's between "3+1" and "-3+1" and the "i" makes it almost random for each pixel. An extra twinkling effect could be made by adding "t", but I thought it would be too exaggerated. You can try by changing to: K=5*S(i+t*4)

show FPS hide FPS share 1 remix fullscreen

rodrigo.siqueira

remix of d/27320 by u/tomxor

function u(t) {

c.style.filter=`invert(`
for(ⵠ=1e4;ⵠ--;ƒ(0,0,300,ⵠ+t))ƒ=(β,α,ထ,ට)=>ထ>1?ƒ(α+ထ*C(ට),β+ထ*S(ට),ထ/3,T(ට/99+t*ට)/2):x.fillRect(β+940,α+510,.2,t<1)

Apr 2 2023 7:32 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

#torus in the dark, light and shadow

u/cantelope

cool efx!
u/joeytwiddle

#donut also 🤭
u/jdspugh

Very cool

show FPS hide FPS share 1 remix fullscreen

rodrigo.siqueira

remix of d/25376 by u/rodrigo.siqueira

function u(t) {

f=(x,y,n=3)=>y<Math.random()*X-x?f(x*x-y*y+.3,3*x*S(y),n+1):S(n/5)**2
for(i=2e4;i--;x.fillRect(X=u&2047,u>>11,f(X/990-1,u/2e6-1.1),1))u=-~u

Apr 27 2022 8:03 PM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Electric #fractal with rays and bifurcations #bifurcation

u/magna

wow!
u/pavel

Brainy!
u/rep_movsd

Galaxy brain

show FPS hide FPS share 2 remixes fullscreen

rodrigo.siqueira

remix of d/25260 by u/rodrigo.siqueira

function u(t) {

for(X=2e3;X--;x.fillRect(X,S(X*t)*999,K=9/t+1,K)){i=a=X/4e3,b=S(X*t)/3-.9
do{d=a*a-b*b-.6,b=2*a*b+.5,a=d,i++}while(1/a<9)x.fillStyle=R(i*4)}

Mar 31 2022 8:22 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Dark red spiral #fractal, fast rendering

u/Joachim

awesome! #scary
u/vain

so awesome! Looks like a phantasy backdrop! (forest of magic trees)

show FPS hide FPS share fullscreen

rodrigo.siqueira

remix of d/25197 by u/rodrigo.siqueira

function u(t) {

c.width|=0
x.font='4em Courier';`${u+u+u+u+u+u+u+u}`.split``.map((L,i)=>{x.rotate(.999)
x.fillText(L,i/2,i*C(i-t/3))},x.translate(960,540))

Mar 26 2022 8:30 PM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Tornado of letters #text

Show more comments…
u/danny@hille.dk

shave off 10 char:c.width|=0;x.font='4em Courier';x.translate(960,540);[...code.repeat(16)].map((L,i)=>x.fillText(L,i/2,i*C(i-t/3),x.rotate(.999)))
u/danny@hille.dk

116:for(i=c.width|=0,x.translate(960,540),x.font='4em Courier';i--;)x.fillText(code[i%99],i/2,i*C(i-t/3),x.rotate(.999))
u/vain

115: with(x)for(i=c.width|=0,translate(960,540),font='4em Courier';i--;)fillText(code[i%99],i/2,i*C(i-t/3),rotate(.999))
u/Joachim

114: with(x)for(i=c.width|=0,translate(960,540),font='4em Courier';i--;fillText(code[i%99],i/2,i*C(i-t/3)))rotate(.999)
u/vgel

108 if you're OK with system font instead of Courier: with(x)for(i=c.width|=0,translate(960,540),font='4em q';i--;fillText(code[i%99],i/2,i*C(i-t/3)))rotate(.999)
u/Joachim

107 char with system font: with(x)for(i=c.width|=0,translate(960,540),font='4em"';i--;fillText(code[i%99],i/2,i*C(i-t/3)))rotate(.999)
u/Xen

104 with Joachim but rotate(1)
u/joeytwiddle

#tornado which is sort of a #quine

show FPS hide FPS share fullscreen

rodrigo.siqueira

remix of d/23860 by u/taupelink

function u(t) {

for(i=k=999;--i;x.fillRect(700-i*Y,k+v*i,19*q*X*v,Y*i*v))f=i*t,X=f%3-1,Y=X*f%7-2,x.fillStyle=R(q=i*X/t,q*=X/t,q*=Y**3*3*q/i/X,i/q/q),v=.5**t

Sep 16 2021 3:34 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Way to the Fog City #city

show FPS hide FPS share 1 remix fullscreen

rodrigo.siqueira

remix of d/23673 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`sepia(`
A=a=b=.8/t;s=920
for(i=1e4;--i;b=A,A=a)x.fillRect(940+a*s,540+b*s,.8,t<99),a=Math.abs(a/2+1/b/2e3)*(A/2+C(a-a/4))-b

Aug 29 2021 8:19 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Glial astrocyte convergence

u/magna

Crazy!

show FPS hide FPS share 3 remixes fullscreen

rodrigo.siqueira

remix of d/23443 by u/danny@hille.dk

function u(t) {

for(c.width=w=512,d=new ImageData(w,w),m=w*w,i=-1;m--;d.data[i+=4]=T(m/w/r+t*30|X/r)*w)r=((X=m%w-256)*X+m*m/2e5)/3e4
x.putImageData(d,0,0)

Aug 1 2021 4:28 PM UTC

}// 138/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Rising from curved space

u/Xen

very nicely
u/Toby

Lovely! How can you use r in the loop header without first defining it (done in the loop body)?
u/danny@hille.dk

Creative use of geme mechanics :-) The for loop has 3 sections separated with semicolons, first is for initializing: this is runs once before the loop starts, second is exit conditions: runs for every iteration before the "loop scope", third is for incrementation: this part actually first run after the loop scope. EX: for(i=9;i--;console.log(j))j=i*2 i is initalized to 9 i is decremented if i equals 0 (any number in js is evaluated to true except 0 wich is false) the loop exist then the j is set to two times i in "loop scope" finally j is printet to the console

show FPS hide FPS share 1 remix fullscreen

rodrigo.siqueira

remix of d/23404 by u/rodrigo.siqueira

function u(t) {

for(x.drawImage(c,C(t*4)*2-40,S(t*3)*2-15,i=2e3,1111);i--;x.fillStyle=`hsl(${i+155},90%,${i}%)`)x.fillRect(960+i*i*C(t*i),540+S(i)*i,2,2)

Jul 27 2021 6:31 PM UTC

}// 137/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Astral Voyager

u/danny@hille.dk

I want this as a screensaver!
u/rep_movsd

Flight through the speed force
u/jellyedwards

Very cool!
u/katkip

beautiful
u/smtsjhr

love it!

dwitter.net | rodrigo.siqueira (15295)