Dweets awesomed by u/Polyducks

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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MrM@_S

function u(t) {

if(!t)c.width-=d=i=400
onkeydown=e=>{r=e.keyCode;d+=r==65?-1:r==68?1:0;i+=r==74?-1:r==76?1:0;if(r==32)c.width^=0}
x.fillRect(d,i,3,3)

Apr 18 2017 12:52 PM UTC

}// 133/140

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etch-a-sketch A and D as the left knob and J,L as the right knob. Space for a clear

u/Polyducks

This is so smart! Have you drawn anything with it?
u/MrM@_S

sort of...but not anything that great
u/joeytwiddle

Very cool!

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magna

remix of d/2516 by u/magna

function u(t) {

c.width|=0
x.font='50px monospace';
((u+'').slice(0,t*3+S(t)*5)+' |'[t*2&1]).split('\n').map((r,i)=>x.fillText(r,0,++i*50))

Apr 18 2017 12:29 PM UTC

}// 123/140

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Slimmer version of "pair programming nightmare"

Show more comments…
u/magna

Challenge: Add occasional mistakes like skipped characters / typos etc.
u/Polyducks

I'm struggling to understand how this works. Where have you got the function input from? Amazingly realistic!
u/Jenky

It's from (u+'') - afaik, it's basically a short/cheat way of converting anything to a string in JS :D
u/Jenky

Also, down to 119 and whole string within canvas - https://www.dwitter.net/d/2524
u/magna

@Jenky Nice!
u/magna

#quine

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Polyducks

function u(t) {

c.width=1920
x.fillRect(0,0,1920,1080)
x.fillStyle="#AAAAFF"
for(i=0;i<20;i++){
  a=T(t+i)*10
  x.fillRect(888*i%1920,a,20,a)
}

Apr 18 2017 8:33 AM UTC

}// 127/140

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*RAIN DROPS*

u/magna

*JAW DROPS*
u/Jenky

Like melting ice :o
u/Polyducks

Aww thanks you guysss!

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sfz

remix of d/2515 by u/sfz

function u(t) {

c.width|=w=213
h=120
d=t?~~(t*60)%9?d:new Date%4:0
x.x=x.x||w
x.y=x.y||h
x.x+=d<2?2*d-1:0
x.y+=d>1?2*d-5:0
x.fillRect(x.x%w*9,x.y%h*9,99,99)

Apr 18 2017 7:43 AM UTC

}// 140/140

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Bit shoddy roomba

u/sfz

Or a cat toy!
u/Polyducks

It's alive!

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magna

remix of d/2420 by u/magna

function u(t) {

c.width|=0;for(j=9;j--;)for(i=100;i--;s=S(t),X=i%5+j*10+s*30,Y=i/5|0,S(Y+t*7)/4<Math.random()&&x.fillRect(400+X*10,400+Y*10,10,10));

Apr 18 2017 4:06 AM UTC

}// 132/140

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#default #noise

u/iverjo

#random

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neo

function u(t) {

v=255;x.arc(c.width/2+700*S(t*6.75),c.height/2+500*C(7.11*t),0,0,0);x.fill();x.fillStyle=R((v+v*C(2*t)),(v+v*S(1*t)),(v+v*S(5*t)),0.03)

Apr 18 2017 3:47 AM UTC

}// 135/140

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u/Polyducks

Wow! There's so many patterns

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Jenky

function u(t) {

w=c.width=568;r=Math.random
t?0:(m=e=>z=[r()*w,r()*w/2])()
onmousemove=e=>{(e.x-z[0])**2+(e.y-z[1])**2<81?m():0}
x.arc(...z,9,0,7);x.fill()

Apr 7 2017 10:31 AM UTC

}// 139/140

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Try to hover over the circle! Doesn't work in fullscreen :'(

u/Jenky

Did make a more game-like version that did work fullscreen at 190 bytes, kept score and everything, but couldn't golf it any lower
u/Jenky

Also this one only works in Chrome again, thanks to e.pageX/pageY being slightly too long
u/donbright

c.width=568 t?0:(m=e=>z=[f=frame%568,(f<<4)%250])() onmousemove=e=>{(e.pageX-z[0])**2+(e.pageY-z[1])**2<81?m():0} x.arc(...z,9,0,7);x.fill()
u/donbright

that is a firefox version :)

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Jenky

function u(t) {

w=c.width|=0
for(i=0;++i<99;)z=50+~~(i**2/80),x.font=z+`px a`,x.fillText(['🌲','🌳'][i%2],(S(i)*w+t*z*4)%(w+z)-z,z*5)

Mar 31 2017 11:58 AM UTC

}// 115/140

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Trees to go along with https://www.dwitter.net/d/2352 :D

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u/Jenky

I challenge someone to combine the two, golfing that is gonna be a doozy
u/z3vin

i love this can you explain: z=50+~~(i**2/80), specifically ~~ and **
u/nonce

~~ is Math.floor() and ** is Math.pow(), I do not understand why you need to floor? Why do you need an integer z? Also i*i is 1 char shorter than i**2 so you could shorten it to: z=50+i*i/80 am I missing something?
u/nonce

FWIW you can have a non integer font size
u/nonce

Golfed a bit, removed the pines (they are evergreen) and added a season: https://www.dwitter.net/d/2361 (autumn)
u/Jenky

Totally missed that, and didn't realise fonts could have floating px. Nice remix, too :D
u/sfz

floating px makes the rendering much slower but it's doable with a reasonable amount of entities
u/nonce

@sfz what about floating em? What is the perf like for that?
u/aemkei

Nice one! Really love the style.
u/aemkei

You can save ~9 bytes:
u/aemkei

for(w=c.width|=i=0;++i<99;)z=50+(i**2/80),x.font=z+px a,x.fillText(i%2?'🌲':'🌳',(i**7+t*z*4)%(w+z)-z,z*5)
u/tapgiles

Very nice!
u/Polyducks

omg haha are these emoji!? That's so smart!!!
u/joeytwiddle

#landscape #parallax #trees
u/micahcowan

#emoji
u/katkip

#perspective

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nonce

function u(t) {

f=frame
g=_=>'\\uD83C\\uDD'+(230+_).toString(16)
m=f%25,n=~~(f/25)
x.font='40px o'
x.fillText(eval(`'${g(m)}${g(n)}'`),m*76,n*43)

Mar 31 2017 6:42 AM UTC

}// 129/140

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Flags of the world. Inspired by: https://esham.io/2015/04/emoji-flags-redux

u/Jenky

Doesn't work at all in Windows, which is a shame :( - Cool to see the range on mobile, though!
u/Polyducks

Works fine in Chrome on Windows for me!
u/f8f82804

#emoji
u/katkip

Where is A as a row

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Jenky

function u(t) {

c.width|=0
t?onkeydown=e=>s=(e.which==8?s.slice(0,-1):(k=e.key).length==1?s+k:s):s=""
x.font="5em a",x.fillText(s+(t%.7<.4?'_':''),9,99)

Mar 29 2017 4:54 PM UTC

}// 136/140

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Type stuff! No newline support, unfortunately. :'(

u/Jenky

Also no insert-style editing, only way to erase is backspace. Old-school terminal/console style. 😎
u/donbright

lol... where are my Wordstar keyboard shortcuts
u/nonce

I love it that backspace works!
u/Polyducks

Blimey!

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