Dweets awesomed by u/Joachim

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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taupelink

remix of d/20654 by u/taupelink

function u(t) {

r=Math.random;for(i=k=214;i--;x.fillRect(k*X,k*Y,i/t,i/t))X=r(Y=r()*5)*9,h=k*S(Y%S(m=X/6%S(p=C(q=Y*S(X/3))*2)*2)),x.fillStyle=R(h*p,h*m,h*q)

Dec 2 2020 4:43 AM UTC

}// 140/140

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d/20902

u/pavel

You can save 7 chars by doing f=i*t,X=f*f%9,Y=X*f%5 in these instead of Math.random. It seems random enough.
u/taupelink

Oh cool, thank you!! I like the way it changes the animation at the beginning too.

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pavel

function u(t) {

for(i=c.width|=0;i--;x.fillRect(660+(p>>2)*200+130*C(a=Math.PI/4+(p+p/4&1||-1)*(369/13*d+3*t)),240+p%4*200+130*S(a),d,d))d=i%120/9,p=i/120|0

Dec 1 2020 8:51 PM UTC

}// 140/140

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#beesandbombs demake https://twitter.com/beesandbombs/status/1327…

u/rep_movsd

If you stare a bit, you see white lines completing the circles - an optical illusion
u/danny@hille.dk

save 9 bytes for(i=c.width|=0;i--;x.fillRect(660+(p>>2)*200+130*C(a=.8+(p+p/4&1||-1)*(28.4*d+3*t)),240+p%4*200+130*S(a),d,d))p=i/120|0,d=i%120/9
u/danny@hille.dk

120/9 = 40/3
u/danny@hille.dk

129 bytes -> for(m=120,i=c.width|=0;i--;x.fillRect(660+(p>>2)*200+m*C(a=.8+(p+p/4&1||-1)*(28.4*d+3*t)),240+p%4*200+m*S(a),d,d))d=i%m/9,p=i/m|0

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pavel

function u(t) {

with(x)for(beginPath(fill()),T=!T,fillStyle=T?'#fff2':R(),i=710;a=i--/113;arc(960,540,300+99*f(28),a,a))f=n=>T?n:n&&S(n|n*t)*S(a*n)/n+f(n-1)

Dec 1 2020 5:14 AM UTC

}// 140/140

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u/Xen

nice style!
u/Xen

nice style!
u/DataMeta

big fan of this one
u/danny@hille.dk

This is awesome!
u/Qwitter

fantastic!

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rodrigo.siqueira

remix of d/20815 by u/rodrigo.siqueira

function u(t) {

for(i=3e3,f=g=>i*C(i*i)*g(i+t*(t>4));i--;x.fillRect(960+f(S)*C(t/3),540+f(C)*C(t/3),1,.5))x.fillStyle=R(i,i/9),c.style='filter:invert('

Nov 28 2020 5:01 PM UTC

}// 135/140

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Starry night swirl #spiral

u/jellyedwards

Wow that's beautiful! #waitforit
u/ElderLord7777

how do I see the code?

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jellyedwards

remix of d/18487 by u/KilledByAPixel

function u(t) {

c.width=300
X=++T%32
T=0>S?0:T
onmousedown=_=>S=C=5
S=S?S+=--C:X<30?S:T=-1
x[f='fillText']('🌵',8*X,w=99)
x[f]('🦖',250,w-S)
x[f](T>>5,0,w)

Nov 27 2020 11:10 AM UTC

}// 137/140

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Damn my connection went again... #game #uncompressed

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u/jellyedwards

He dies on the very first click so click again!
u/jellyedwards

Also you can cheat pretty easily but the T-Rex was a member of the Coelurosauria so you never know...
u/ciaccodavide

gj!
u/jellyedwards

https://en.wikipedia.org/wiki/Theropoda#Rela…
u/jellyedwards

try link again: https://en.wikipedia.org/wiki/Theropoda#Rela…
u/katkip

#tagfail

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ciaccodavide

function u(t) {

onmousemove=e=>(C=e.x/.3,S=e.y/.3)
P.push({x:C,y:S},P.map(p=>(X=p.x-C,Y=p.y-S,x.lineTo(p.x-=X/9,p.y-=Y/9))))
x.stroke()
}{P=[]

Nov 21 2020 7:29 PM UTC

}// 126/140

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Draw #interactive

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tomxor

remix of d/20689 by u/yonatan

function u(t) {

for(c.width=64,i=2e4;Z=--i>>9;T=k^64?T+S(Z+C*k/9+9/Z*t*k)/k:x.fillRect(C=i/8&63,T*9-T*Z/3,1,l=Z*32-Z*Z,x.fillStyle=R(l,l+Z,l/.8))|3)k=1<<i%8

Nov 19 2020 11:12 PM UTC

}// 140/140

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One for loop to rule them all... with a moderate chance of rain

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u/tomxor

This was a tough golf! thanks for the challenge and awesome dweet yonatan :)
u/DataMeta

I like this golfed rendition! :]
u/yonatan

i think i like this better than the original :)
u/yonatan

what's the deal with the k^64 tho? seems like it'd spend 64 iterations building the fbm in T and then 64 more doing fillRects??
u/yonatan

k&63 I'd understand...
u/yonatan

oh right, k isn't the loop counter
u/yonatan

-1 char with i&7: for(c.width=64,i=2e4;Z=--i>>9;T=i&7?T+S(Z+C*k/9+9/Z*t*k)/k:x.fillRect(C=i/8&63,T*9-T*Z/3,1,l=Z*32-Z*Z,x.fillStyle=R(l,l+Z,l/.8))|3)k=1<<i%8
u/danny@hille.dk

Use the saved char to boost performance with i=15e3
u/danny@hille.dk

This is a fabulous golf👍
u/danny@hille.dk

excellent work u/tomxor
u/tomxor

Thanks Danny :)

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pavel

remix of d/20689 by u/yonatan

function u(t) {

for(c.width=w=128,i=2e3;z=--i>>7;x.fillRect(i%w,(4+S(a=i/6+7*t/z)+S(3*a^z)/3+S(9*a)/9)*(14-z),1,w))x.fillStyle=`hsl(200,${z*9}%,${i/7-z*z}%`

Nov 19 2020 2:45 AM UTC

}// 140/140

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u/joeytwiddle

Excellent collaboration, you monsters!
u/danny@hille.dk

You got some serious golf-fu skills 👍
u/danny@hille.dk

+S(9*a)/9 can be approximated by constant .1 to shave off additional 6 bytes
u/yonatan

this is great!
u/DataMeta

impressive
u/joeytwiddle

I tried to reproduce in tixy.land but overflowed a bit https://twitter.com/joeytwiddle/status/13294…
u/Qwitter

nes vibes

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yonatan

remix of d/16195 by u/yonatan

function u(t) {

eval(unescape(escape`𬐽𨰮𭱩𩁴𪀽𞐹𞱦𫱲𚁶𨑲𘁭🐳𜀬𨐬𪠬𪰬𪐻𫐭𛐻𚑦𫱲𚁮🐱𛑭𛰳𜀬𪐽𬐻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚁩𛁡𚠨𜠹𛑭𚐯𜠬𜐬𬐬𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀲𜀰𛀤𮱭𚠳𯐥𛀤𮰵𜀫𤰨𫠪𝀩𚠵𜁽𙐩𨀩𚑦𫱲𚁡🐳𛁪🐱𜠻𪠭𛐻𨐫👓𚀨𚁴𛱭𚡱𚱩𚐫𞐪𤰨𫐪𪰩𚐪𪰯𞐩𛱫𚑫🐲𚠪𪠻`.replace(/u../g,'')))

Nov 18 2020 5:52 PM UTC

}// 140/140

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much faster in firefox

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u/danny@hille.dk

NICE!
u/tomxor

Woah!! The low res makes it feel more real for some reason.
u/DataMeta

AMAZING #landscape
u/ciaccodavide

wow D:
u/rep_movsd

This is amazing
u/Xen

nicely done!

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tomxor

remix of d/20657 by u/dnmc

function u(t) {

for(c.width&=i=8320;i--;)
x.fillRect(X=i&127,Y=i>>7,
k=S(8*t+X*X+Y*Y+X*Y)+.5,k)

Nov 18 2020 1:33 AM UTC

}// 79/140

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Nano Snakeskin

u/bandaloo

this is great! i'll definitely be using this substitute for a doubly-nested for loop
u/DataMeta

agreed, cool trick! even more succinct than the nested hack I've been using, and the perf increase from bitwise ops is welcome
u/tomxor

Yes, I've used this so much, I guess it's just more obvious in this one. I've taken technique a step further in d/20707 converting yonatan's 3 loops into one. bitwise can be very powerful to manipulate the variables a loop traverses.

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