Dweets awesomed by u/pavel

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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tactical_retard

function u(t) {

r=Math.random
for(i=2e4;i--&&t<9;x.fillRect(p.x,p.y,.5,.5))p=T[i]=t?T[i]:{x:r()*2e3,y:r()*2e3},T[i].x+=S(p.y/540*3.1),T[i].y+=S(p.x/960*3.1)

Jun 4 2022 2:04 AM UTC

}// 140/140

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#vectorfield

u/rep_movsd

T[i].x+=S(p.y*(p.x**.5)) is interesting

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rodrigo.siqueira

remix of d/25546 by u/rodrigo.siqueira

function u(t) {

f=(x,y,n=5)=>y<X+x?f(2*x*y+.16,x*x/5-y*y+.5,n+1):C(n/19)
for(i=1e4;i--;x.fillRect(X=u&2047,u>>11,f(X/2000-1,u/8e6-.7),1))u=-~u

May 30 2022 1:58 PM UTC

}// 126/140

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Deep spiral #fractal #spiral

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rodrigo.siqueira

remix of d/25442 by u/rodrigo.siqueira

function u(t) {

f=(x,y,n=0)=>y<X+x/4?f(x*x-y*T(y)+.3,.02+2*x*S(y),n+1):C(n/7)
for(i=1e4;i--;x.fillRect(X=u&2047,u>>11,f(X/3200-.7,u/7e6-.37),1))u=-~u

May 25 2022 5:13 PM UTC

}// 133/140

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Mysteries of spirals #fractal #spiral

u/pavel

Has anyone searched random views of random simple fractals for animals or common objects via machine learning identification? Just let it run for a while and see if you can find some weirdly coincidental stuff?
u/jdspugh

Great idea
u/rep_movsd

I manually searched for motifs in the Gumowski Mira attractor for my NFT
u/rep_movsd

I manually searched for motifs in the Gumowski Mira attractor for my NFT
u/rep_movsd

There are turtles, humanoids and some jar like artifacts

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ArthurThuczsec

remix of d/25534 by u/f8f82804

function u(t) {

with(x)for(i=s=311;--i;)fill(arc(s*(A=S(a=i/9))*S(b=t+i)+960,220*(A*C(b)-C(a)+2),i,!beginPath(fillStyle=`hsla(${i*t},90%,${99-i/2}%,.2`),9))

May 24 2022 1:06 PM UTC

}// 140/140

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u/andrea270872

very nice. reminds me of the old Star Trek special effects! cool

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New_Core

function u(t) {

for(a=i=1920;i--;x.fillStyle=R(50+b*i/20))x.fillRect(i-50*S(t+i/a),0,b=1-.3*S(i/(C(t+i/50)-20))-S(t+i/a),20)
x.drawImage(c,0,20)

May 23 2022 6:34 PM UTC

}// 128/140

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u/magna

Great!

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Joachim

function u(t) {

for(z=c.width|=i=0;++i<z*2;x.fillStyle=R(p?z:2e4/I,3e4/I,2e4/I))x.fillRect(960+S(z/(I=i%z)+t*7|0)*I*9+(p=i<z&&I/2),400+I+p*2,p?I/9:I,I)

May 16 2022 3:43 PM UTC

}// 135/140

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Misty Trees

u/taupelink

cool! actually reminds me of the characters in some Blendo Games works
u/UEZ

#Borg #trees ;-)

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rodrigo.siqueira

remix of d/25476 by u/rodrigo.siqueira

function u(t) {

for(m=2e3;m--;x[m%2?'fill':'stroke']())x.beginPath(x.fillStyle=R(i=m%280,i/2,0,.7)),t<.5&&x[m%3?'rect':'arc'](m*m%2e3,m,T(i-t*t)**2,i^m,7)

May 15 2022 10:16 PM UTC

}// 138/140

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geometric cityscape

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taupelink

remix of d/25493 by u/taupelink

function u(t) {

for(k=300,m=t?0:5e4;m--;x.stroke())x.beginPath(r=m**(m%(5/9))),i=m%k,x.lineWidth=r/i/20,x.arc(m%8*k+r*C(m),(m>>3)%5*k+r*S(m),r,m,m+m%6/3+.1)

May 13 2022 8:40 PM UTC

}// 140/140

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d/25494

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taupelink

remix of d/25492 by u/taupelink

function u(t) {

for(k=300,m=t?0:2e4;m--;x.fill())x.beginPath(x.fillStyle=R(r=m**(m%.75),i=m%k/.9,r+i,r/i/4)),x.arc(m%8*k+r*C(m),(m>>3)%5*k+r*S(m),r,m,m-m%4)

May 13 2022 6:53 PM UTC

}// 140/140

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d/25493

u/taupelink

Note: This dweet looks different on different browsers.You may see a blank column on the left edge and just to the right of center. Those were not there when I composed the dweet on iOS. They can be eliminated by replacing m-m%4 at the end with m-m%4+(m%4?0:7)
u/taupelink

I think what's happening is, different environments interpret arc differently in case the start and end angles are the same. In iOS, a full circle is drawn (which is what I intended). Elsewhere, nothing is drawn (hence the white columns you may be seeing).
u/pavel

As far as I know it is just Safari that has a bug with arc, where the two angle terms do not simply get %(2*pi) treatment. If the angles are sufficiently large, like 10pi-ish, the arc breaks and draws weird lines. So you have to ensure the angles are small manually :/
u/taupelink

well, the question here is what happens when the angle difference is zero? I suspect this is another quirk of Safari/iOS: when the angle is zero, it defaults to drawing a full circle.

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taupelink

remix of d/25390 by u/taupelink

function u(t) {

for(k=311,m=t?0:2e4;m--;x.fill())r=m**(m%.75),x.beginPath(x.fillStyle=R(i=m%k*4,i^r,i+r,r/i)),x.arc(m%8*k+r*C(m),(m>>3)%5*k+r*S(m),r,m,m-3)

May 13 2022 6:39 PM UTC

}// 139/140

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d/25492

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