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: #Opposites

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joeytwiddle

function u(t) {

c.width|=0;for(i=9;i--;)x.save(),x.translate(115+280*i,400+80*i-9*i*i),x.scale(20,20),x.rotate(S(t-i/5)/4),x.fillText('🏮',-6,6),x.restore()

Feb 5 2019 5:57 PM UTC

}// 139/140

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u/lionleaf

Lunar New Year!
u/joeytwiddle

Curious. Chrome only keeps the resolution now, when the text is horizontal.

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joeytwiddle

function u(t) {

for(c.width|=i=999;i--;)a=i-t,h=i/580-.25,r=(h<1.2)*150+(h>0&&h<1)*400*S(h*3),x.fillStyle='#e'+i,x.fillRect(960+r*S(a),50+i+r*C(a)/5,70,30)

Feb 4 2019 3:17 PM UTC

}// 139/140

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Gong xi fa chai!

u/katkip

#cute
u/joeytwiddle

Happy Chinese New Year of the Pig!

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joeytwiddle

remix of d/12000 by u/yokljo

function u(t) {

for(c.width|=j=20;j--;)for(g=j*120,i=99;i--;)x.fillRect(i?g+i/30*S(1e3/i-t*8+j*j*400)*i/2:g,i?i*5+600:0,120+60*S(j*j*(t|1)),i?5:600)

Jan 31 2019 6:22 AM UTC

}// 132/140

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A little remix of yokljo's city river

Show more comments…
u/katkip

Huh nice
u/joeytwiddle

Scrolling instead of switching: for(c.width|=j=15+t|0;j-->t;)for(g=(j-t)*180,i=99;i--;)x.fillRect(i?g+i*S(1e3/i-t*8+j**3):g,600+!!i*i*5,-99-80*S(j*j),i?3:-600)
u/username

What is this supposed to be? I only see black squiggly lines..
u/joeytwiddle

I think it's supposed to be buildings reflect in water. for(c.width|=j=20+t|0;j-->t;)for(g=(j-t)*120,i=W=99;i--;)x.fillRect(i?g+i*i/70*S(1e3/i-t*8+j**3):g,500+!!i*i*4,-W-80*S(j*j),i?3:-300-W*S(j))
u/donbright

oh my god
u/joeytwiddle

Please give u/yokljo an upvote. I only tweaked their idea! #water #waves
u/Tekmap

👏👏👏
u/vain

cool fx

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joeytwiddle

remix of d/11968 by u/joeytwiddle

function u(t) {

c.width|=0;o=t*7%15.7-22/7;j=o>0;w=(99-j*80-j*o*1.6)*S(!j*o+j*o*4);x.ellipse(920,850-j*600*S(o/4)-w,200-w,200+w,0,0,7);x.fill()

Jan 27 2019 5:54 AM UTC

}// 127/140

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New_Core's bouncing ball + squash = jumping jack

u/katkip

Nice
u/katkip

#physics #jelly
u/DataMeta

Delightful!
u/joeytwiddle

Change o*4 to o*3 for a slower wobble

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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) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀽𫐽𪐽𜠰𜀻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚀹𝠫𜠰𚡳𛑬𚡫𛀵𜀫𜠰𚡫𚱬𚡳𛀱𝀬𜐴𚐩𪰽𠰨𨐽𝀪𚁓𚁴𚐭𭀩𚱩𙐴𚠱𛠵𝰭𞐩𛁳👓𚁡𚐬𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𨐨𙁻𪐥𝀪𝠶𛐹𯐬𞐰𙐬𝀳𙐬𛠲𨀬𫀽𝀱𛑩𚠨𜐫𠰨𭀩𚐯𝐻`.replace(/u../g,'')))

Jan 18 2019 5:53 AM UTC

}// 124/140

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Classic Slack #loading spinner (RIP release)

u/metamero

cool! also cool it's #compressed using the UTF-16 surrogate pairs method =]
u/joeytwiddle

It sure is! I gave your compressor a try.
u/joeytwiddle

This dweet was first attempted by BirdsDweet and myself in February 2018.
u/joeytwiddle

We never really finished it, so this is as far as it got. I publish it now, because Slack has now changed their spinner!

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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

remix of d/11725 by u/joeytwiddle

function u(t) {

(p=(X,Y,W,I,H=W/2)=>H>1?[0,1,2,3].map(i=>p(X+i%2*H,Y+H*(i>1),H,I*(.5+S(t*t++/2e4)/2)**.1)):x.fillRect(X,Y,3-I,3-I))(0,0,c.width=R=512,5)

Jan 14 2019 10:10 AM UTC

}// 136/140

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Some more of this fractal nonsense

u/joeytwiddle

(The original intention was to do this with hue. Perhaps that can be achieved...)
u/DataMeta

Highly entertaining #glitch

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joeytwiddle

remix of d/11737 by u/katkip

function u(t) {

c.style.marginLeft=100*C(t)+'px';t||(X=Y=0);while(t++<400)NY=X/5,X=(Math.random()*9|0)*100+50*Y/200,Y=NY,x.fillRect(100+2*X,200+4*Y,1,1)

Jan 12 2019 5:31 PM UTC

}// 136/140

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Defaultception IFS. We heard you like the #default so...

u/joeytwiddle

...we put some defaults in your default
u/metamero

Awesomeness++ for this great use of marginLeft

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joeytwiddle

remix of d/11709 by u/joeytwiddle

function u(t) {

t%1<.01&&(p=(X,Y,W,I,H=W/2)=>H>1?[0,1,2,3].map(i=>p(X+i%2*H,Y+H*(i>1),H,I*Math.random()**.2)):x.fillRect(X,Y,I,I))(0,0,c.width=R=512,5)

Jan 10 2019 10:29 AM UTC

}// 135/140

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golfed #recursive #fractal #cloud

u/katkip

#massive
u/joeytwiddle

guess: What happens if you remove one of the numbers from the list?
u/f8f82804

Neat trick with just three numbers :) It took me a minute...

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