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.

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Current theme challenge: #Food

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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

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Electric #fractal with rays and bifurcations #bifurcation

u/magna

wow!
u/pavel

Brainy!
u/rep_movsd

Galaxy brain

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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

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Dark red spiral #fractal, fast rendering

u/Joachim

awesome! #scary
u/vain

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

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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

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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

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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

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Way to the Fog City #city

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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

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Glial astrocyte convergence

u/magna

Crazy!

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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

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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

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rodrigo.siqueira

remix of d/20815 by u/rodrigo.siqueira

function u(t) {

for(i=3e3,f=g=>i*C(i*i)*g(i+t*(t>4));i--;x.fillRect(960+f(S)*C(t/3),540+f(C)*C(t/3),1,.5))x.fillStyle=R(i,i/9),c.style='filter:invert('

Nov 28 2020 5:01 PM UTC

}// 135/140

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Starry night swirl #spiral

u/jellyedwards

Wow that's beautiful! #waitforit
u/ElderLord7777

how do I see the code?

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rodrigo.siqueira

remix of d/18653 by u/rodrigo.siqueira

function u(t) {

for(i=1e3;i--;x.fillStyle=R(Y+Z,Y/3,X,.1))x.fillRect(X=C(z=S(i**9)*7-5)*i**1.5,Y=600+S(z/2)*i*S(t/5)*3,Z=400*S(i),Z),x.strokeRect(X,Y,Z,Z)

Jun 1 2020 8:34 PM UTC

}// 138/140

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Moving squares - Abstract Neoplasticism #art

u/Xen

love it!
u/taupelink

This is excellent
u/tomxor

Strangely familiar O_o
u/DataMeta

Fun!! #abstract

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rodrigo.siqueira

remix of d/18262 by u/KilledByAPixel

function u(t) {

c.style.filter=`sepia()invert(`
for(P=j=2e4;j--;j%99||(T=P=S(t+j)*2,R=C=T*2))
P=P*P-C*C+(C=2*C*P+R,T),x.fillRect(C*450+960,P*450+700,1,1)

Apr 15 2020 12:59 AM UTC

}// 137/140

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Particle collision inside a hadron collider #particles

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rodrigo.siqueira

remix of d/17778 by u/rodrigo.siqueira

function u(t) {

c.style='filter:sepia()invert('
for(A=a=b=i=1e4;i--;a=a/2+(i*t/b&1)/4+b*S(a)/2,b=b/2+C(A*4.6)/3,A=a)x.fillRect(a*3e3+80,650-b*830,.3,t<2)

Feb 28 2020 2:36 AM UTC

}// 137/140

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#growth of ice crystals

u/rodrigo.siqueira

I used a golf trick to plot for only 2 seconds: x.fillRect(...,...,...,t<2). If time >2 then the pixel height will be zero.
u/joeytwiddle

Very pretty

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