Top dweets by u/joeytwiddle

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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joeytwiddle

function u(t) {

R=()=>(97*t++*t%1)*16<<7
for(i=2;i--;x.fill())x.beginPath(x.fillStyle=`hsla(${R()},99%,${50*!i}%,${i?.03:.5})`)|x.arc(R(),R(),i?3e3:40,0,7)

Jan 17 2019 6:05 AM UTC

}// 139/140

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Blinkenlights

u/joeytwiddle

Inspired by (but barely resembling) the Arabesque screensaver on macOS
u/joeytwiddle

For brighter lights, try .8 instead of .5
u/joeytwiddle

Whatever number you choose, one lights always blinks regularly. For 97 it's the orange light in the lower right.
u/joeytwiddle

For 321 there is a yellow light giving a double pulse

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joeytwiddle

function u(t) {

c.width|=p=(X,Y,W,I,H=W/2)=>H>2?(p(X,Y,H,I*=Math.random()**.2),p(X+H,Y,H,I),p(X,Y+H,H,I),p(X+H,Y+H,H,I)):x.fillRect(X,Y,I,I),p(0,0,R=1024,9)

Jan 9 2019 3:15 PM UTC

}// 140/140

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a sort of rough #recursive #plasma #fractal

u/joeytwiddle

Ideally we would keep the edges smooth, by holding an intensity for each corner instead of the entire square
u/joeytwiddle

W=width, H=half width, I=intensity, p=plot/plasma/partition
u/joeytwiddle

p calls p four times for each sub-square, with a randomly smaller I

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joeytwiddle

remix of d/9220 by u/katkip

function u(t) {

r=Math.random;for(i=1e3;i--;x.fillText('mtrc'[r()*4|0],y*32,z*32*z/t))y=r()*66,z=r()*33,x.fillStyle=R(0,C(t*i)*1e3-745);x.drawImage(c,0,9)

Aug 13 2018 6:41 AM UTC

}// 138/140

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u/katkip

Oh nice. How's shorter?

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joeytwiddle

remix of d/3519 by u/cantelope

function u(t) {

for(i=w=960;i--;x.fillRect(w+S(p=i+t/9)*Z*w,540+C(p)*Z*w,7,7,x.fillStyle=`hsl(${99*T(p+T(4*Z-t)/6)},99%,65%`))Z=((.73*t+i)%4)**.5*.6

Nov 18 2017 6:41 AM UTC

}// 132/140

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joeytwiddle

function u(t) {

x.fillStyle='black',x.fillRect(0,0,1920,1080)
X=960-1200*C(t),Y=1200-800*S(t)
x.fillStyle='white',x.beginPath(),x.arc(X,Y,199,0,7),x.fill()

Oct 4 2017 9:18 AM UTC

}// 139/140

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Happy https://en.wikipedia.org/wiki/Mid-Autumn_Fes… !

u/joeytwiddle

Suggestion: Send some Chinese lanterns up into the sky
u/joeytwiddle

Suggestion: Prepare your rangoli for next week: https://www.google.com/search?tbm=isch&q…
u/joeytwiddle

Someone did this: https://www.dwitter.net/d/3293
u/joeytwiddle

A similar concept, but much prettier: d/6940

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joeytwiddle

function u(t) {

c.width=2e3;for(i=0;i<9;i++){x.fillStyle=R(99+99*S(t),99+99*S(t*.7),20*i,1);x.fillRect(550+i*100-400*S(t),440+200*C(i/6+6*t)*S(t/7),50,200)}

Apr 3 2017 4:15 PM UTC

}// 140/140

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Hello dwitter!

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joeytwiddle

function u(t) {

document.body.innerHTML='XXXX Y Y'.split('').map((a,i)=>`<div style="transform:rotate${a}(${(i+t)*90}deg)">${a}</div>`).join('')

Mar 25 2023 7:40 PM UTC

}// 128/140

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An unfinished cube

u/joeytwiddle

Inspiration: https://3dtransforms.desandro.com/cube

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joeytwiddle

remix of d/25025 by u/joeytwiddle

function u(t) {

P=t?P:[],p=s=2+(t*6|0)
P.map(n=>p=p&&s%n),P[s]=s
x.font="9em'",x.fillStyle=p?'#fff':'#0002'
x.fillText(s+!p*t,9*s*t*t%1700,99+50*9*t*t%999)

Feb 23 2022 9:50 PM UTC

}// 139/140

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Transient Primes (dirty golf)

u/joeytwiddle

Shouts to u/Smiley1000 !

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joeytwiddle

remix of d/24954 by u/Smiley1000

function u(t) {

eval(unescape(escape`倽琿债孝ⱳ㴲⬨琪㥼〩ੰ㴱㭐⹭慰⡮㴾瀽瀦♳╮⤊偛獝㵳੸⹦潮琽∹敭✢੸⹦楬汓瑹汥㴧⍦晦✊瀦♸⹦楬汔數琨猬㤪猪琪琥ㄷ〰ⰹ㤫㔰⨹⩴⩴┹㤹⤊砮晩汬却祬攽✣〰〱✊砮晩汬剥捴⠰ⰰⰲ攳ⰲ攳⤊`.replace(/u([^D].)/g,'$1%')))

Feb 23 2022 9:31 PM UTC

}// 138/140

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Transient Primes (fillRect)

u/joeytwiddle

Slowing the fade with frame%3||x.fillRect( helps us to see lonely or bunched primes

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joeytwiddle

remix of d/25014 by u/ellieeet

function u(t) {

for(w=j=400;j--;x.fillStyle=b+'05',x.fillRect(c()*1620,c()*780,c()*w,c()*w))for(i=0,b='#',c=Math.random;i<6;i++)b+='34569bdef'[c()*9|0]

Feb 23 2022 8:09 PM UTC

}// 135/140

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Welcome to u/ellieeet !

u/rep_movsd

Uncannily similar to one of my earliest dweets
u/rep_movsd

Uncannily similar to one of my earliest dweets
u/rep_movsd

https://www.dwitter.net/d/15081
u/joeytwiddle

It's an interesting effect, which I still don't understand d/13303

dwitter.net | joeytwiddle (2548)