Dweets awesomed by u/Jenky

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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keithclark

remix of d/2561 by u/keithclark

function u(t) {

for(a=c.width|=l=C(t),m=S(t);a--;x.fillRect((d*l-S(a)*m)*h+960,(g*l-f*m)*h+520,h/=65,h))d=S(a*(f=C(a*a))),g=d*m+S(a)*l,h=800/(3+g*m+f*l)

Apr 23 2017 6:19 PM UTC

}// 136/140

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3 bytes smaller

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keithclark

function u(t) {

for(a=c.width|=l=C(t),m=S(t);a--;x.fillRect((d*l-e*m)*h+960,(g*l-f*m)*h+520,h/=50,h))d=S(a*92),e=S(a),f=C(a*.7),g=d*m+e*l,h=800/(3+g*m+f*l)

Apr 23 2017 11:33 AM UTC

}// 139/140

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A point cube spinning on two axis with perspective

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u/hscells

this is really nice
u/donbright

great job!
u/magna

Awesome!
u/cantelope

very nice!
u/joeytwiddle

#cube #dots
u/vain

damn cool

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joeytwiddle

function u(t) {

W=c.width=2e3;for(i=96;i--;)j=i>>2,x.fillRect(j?X=(3*j%8*33*t+i*590)%W:W/2,j?Y=j*90:Z*90,99,50),!t||j==Z&&(X-W/2)**2<W*4?Z=0:onclick=e=>Z++

Apr 23 2017 7:47 AM UTC

}// 139/140

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You know this game. Click to play.

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u/hscells

this is awesome
u/donbright

omg i made it
u/sigveseb

Really nice!
u/magna

:D
u/MrM@_S

nice job
u/joeytwiddle

Thanks guys 🚗🚙🚓🏎🚂 💥 🐸
u/MrM@_S

I made a quine remix https://www.dwitter.net/d/2596
u/joeytwiddle

An improved version with different levels: https://www.dwitter.net/d/2612

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cantelope

remix of d/2554 by u/cantelope

function u(t) {

w=960,v=340,x.fillRect(0,0,w*2,v*4)
for(i=99;i--;)for(j=59;j--;)X=i/2-25-C(t),Y=2+S(i/5)*S(j/5+t*3),x.clearRect(w+1/j*X*w,v+Y/j*w,s=99/j,s)

Apr 22 2017 6:43 PM UTC

}// 139/140

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cantelope

function u(t) {

cx=(c.width|=0)/2,cy=340
for(i=99;i--;)for(j=59;j--;)X=i/2-25-C(t)*2,Y=3+S(i/5)*S(j/5+t*3),x.fillRect(cx+1/j*X*cx,cy+Y/j*cx,s=99/j,s)

Apr 22 2017 6:28 PM UTC

}// 133/140

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u/innovati

🌊🏄
u/joeytwiddle

Beautiful
u/cantelope

innovati, i can't tell what those emojis are. lel.
u/Renaud___

great

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magna

remix of d/2533 by u/Jenky

function u(t) {

t||(n=c.cloneNode(),g=n.getContext("webgl"))
g.clearColor(.7+.3*S(t*4),0,0,1)
g.clear(16384)
x.drawImage(n,0,0)

Apr 19 2017 11:57 AM UTC

}// 111/140

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Shorter, but inefficient WebGL setup

u/tomxor

OooOh, stop tempting me!

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Jenky

function u(t) {

t||(n=c.cloneNode(0),c.parentNode.replaceChild(n,c),g=n.getContext("webgl"))
g.clearColor(.7+.3*S(t*4),0,0,1)
g.clear(16384)

Apr 19 2017 9:49 AM UTC

}// 124/140

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WebGL, anyone? :D

u/Jenky

Kinda sucks it takes so many bytes to set up, anyone have ideas to shorten?
u/magna

Just keep drawing the new, off-screen canvas onto the existing 2D context seems to work (though, is probably inefficient): https://www.dwitter.net/d/2535

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Jenky

remix of d/2522 by u/magna

function u(t) {

c.width|=i=0
x.font='50px monospace';((u+'').slice(0,t*4+S(t)*6)+`
|`[t*2&1]).split(`
`).map(r=>x.fillText(r,0,++i*50))

Apr 18 2017 4:57 PM UTC

}// 119/140

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You could keep it as +' |' instead of +<return>| but hey, we want to see the whole thing, right? :D

u/magna

Excellent use of `!

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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"

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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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