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

remix of d/8413 by u/joeytwiddle

function u(t) {

for(c.width|=0,i=4e3;i--;x.beginPath())x.globalAlpha=.03,x.arc(S(t*6+i*i/99e2)*i*i/1e4+960,C(t*6+i*i/99e2)*i*i/1e4+540,i/30+2,0,7),x.fill()

Jun 5 2018 9:46 AM UTC

}// 139/140

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Soft spiral happy accident 2

u/joeytwiddle

Moody and cloudy: x.arc(S(t*6+i*i/99e2)*i/4+960,C(t*6+i*i/99e2)*i/4+540,i/30+2,0,7),x.fill()
u/joeytwiddle

Eye of the storm: t=9+t/5e2;for(c.width|=0,i=4e3;i--;x.beginPath())x.globalAlpha=.03,x.arc(S(i*i/1e4*t)*i/4+960,C(i*i/1e4*t)*i/4+540,i/30+2,0,7),x.fill()

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joeytwiddle

remix of d/3021 by u/joeytwiddle

function u(t) {

s=speechSynthesis
V=s.getVoices()
c.onclick=l=()=>(U=new SpeechSynthesisUtterance(l),U.voice=V[t%V.length|0],s.speak(U))//U.rate=U.pitch=1.2

Aug 6 2017 8:25 AM UTC

}// 140/140

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A speaking dweet (international version)

u/joeytwiddle

Chrome users, if your utterance goes over 15 seconds, you may need to close the tab. http://tinyurl.com/chrome-bug-679437
u/cantelope

very clever :)... btw, which dweet of mine crashed your lappy? ...just curious
u/joeytwiddle

This is the one, it can reliably overheat my CPU: https://www.dwitter.net/d/2355 I think it's due to the size of the large squares. I have had to adjust the cooling thresholds!
u/cantelope

:/ sorry about that.
u/joeytwiddle

No worries Cantelope. Wow Mac has a lot of voices. The "Cello" voice is pretty funny! https://codesandbox.io/s/vq48b #audio #speech

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joeytwiddle

function u(t) {

x.font='480px s'
x.fillText('NOVA',260,700)
x.transform(1,0,0,1.02,0,-10)
x.fillStyle=`hsla(${888*t},50%,50%,${.001**t}`

Jun 23 2017 6:18 PM UTC

}// 120/140

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Nova party is this weekend in Devon, UK http://www.novaparty.org/

u/joeytwiddle

x.transform(1.01,0,0,1.02,-9,-10) is also fun
u/joeytwiddle

Oh curious. 's' gives me a 'sans' font on Linux but a 'serif' on Mac!

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joeytwiddle

remix of d/2559 by u/joeytwiddle

function u(t) {

c.width|=0;for(i=H=1e3;i--;!t||j==Z&&(X-H)**2<8e3?Z=0:onclick=e=>Z++)j=i>>2,x.fillRect(j?X=(j%3+1)*(t/4+i)*213%2e3:H,52*(j||Z),99,40)

Apr 26 2017 5:44 PM UTC

}// 133/140

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Golfed version with busier traffic. Difficulty level: donbright

u/New_Core

made it thru ;)
u/rileyjshaw

Same :D super fun

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joeytwiddle

remix of d/2754 by u/New_Core

function u(t) {

P=200;A=Math.abs;t?c.width|=0:a=1;d=A(500*S(t));a=d<5?20:a<0?0:a-.1;x.ellipse(P+A(P*t%3040-1520),840-d,a*S(t*9)+P,a*C(t*9)+P,0,0,7);x.fill()

Jan 27 2019 5:39 AM UTC

}// 140/140

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New_Core's bouncing ball + walls

u/13thptr

great #bounce #ball

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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

dwitter.net | joeytwiddle (2464)