Hot dweets by u/pavel

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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pavel

remix of d/2336 by u/cantelope

function u(t) {

for(i=k=c.width|=0;i--;x.arc(X,Y,k*k|1/z,k=0,7))z=1-(t*30+i)%99/99,x.moveTo(X=960*(z+i**.9%1-.5)/z,Y=540*(z+i**.6%1-.5)/z)
x.fill('evenodd')

Feb 7 2019 7:27 AM UTC

}// 140/140

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Golfed enough for round bodies

u/mxfh

Welcome to the #arc side
u/13thptr

lol

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pavel

remix of d/12245 by u/katkip

function u(t) {

f=p=>x.beginPath([X,Y,r]=p,q=[[X,Y-r,h=r/2],[X-r,Y+h,h],[X+r,Y+h,h]])|q.map(o=>x.lineTo(...o))|x.fill()|h>9&&q.map(f)
f([960,700,350])

Feb 8 2019 7:52 PM UTC

}// 134/140

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u/katkip

Interesting technique.

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pavel

function u(t) {

q=6+5*S(t)
x.font=q+'em"'
x.fillStyle=`hsl(${50*t} 99% 50%`
x.fillText(...p=['Bragging about my likes',960-80*q,90*q])
x.strokeText(...p)

Feb 5 2019 8:48 PM UTC

}// 137/140

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#meta

u/Xen

GWAAN!
u/katkip

:D

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pavel

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪁼👩🐱𝀻𛐭𪐻𮀮𬱴𬡯𪱥𚀩𚑦𫱲𚁸𛡢𩑧𪑮𤁡𭁨𚁬👩𛐷🰹𞐺𜀩𞱬𛐭𞱸𛡬𪑮𩑔𫰨𞐶𜀪𚁺𚱘𚡃𚁴𚐫𦠪𤰨𭀩𚐯𮠬𝐴𜀫𞐶𜀪𚀨𚀲𚡩𛐱𚐯𜱼𜀩𙐳𛐱𯁼𩀩𛱺𚐩𩀽𫀭𝀹𛁘🐨𪐯𝑼𜀩𛐱𯁼𩀬𦠽𪐥𜰭𜑼𯁤𛁺🐴𛑘𚡓𚁴𚐫𦠪𠰨𭀩𛁺𚠽𮠾𜀻`.replace(/u../g,'')))

Feb 2 2019 8:42 PM UTC

}// 138/140

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for(c.width|=i=14;--i;x.stroke())for(x.beginPath(l=i-7?99:0);l--;x.lineTo(960*(z+X*C(t)+Z*S(t))/z,540+960*(((2*i-1)/3|0)%3-1||d)/z))d=l-49,X=(i/5|0)-1||d,Z=i%3-1||d,z=4-X*S(t)+Z*C(t),z*=z>0

u/katkip

#compressed
u/cantelope

cool!
u/katkip

#cube
u/UEZ

#perspective #vanishingPointProjection

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pavel

remix of d/11963 by u/cantelope

function u(t) {

for(x.fillRect(0,0,i=2e3,i);Q=S(q=--i*i);x.clearRect(960*(z+S(b)*3+S(p)*Q)/z,540+960*(C(q)-C(b+t))/z,s=99/z/z,s))z=6+C(b=i%6+t)*3+C(p=i+t)*Q

Jan 26 2019 8:47 PM UTC

}// 140/140

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#uncompressed in black and white

Show more comments…
u/adaq

coolio
u/cantelope

(╯°□°）╯︵ ┻━┻
u/cantelope

this one seems to outperform my original, probably due to all the color calls in mine. One thing I haven't been able to figure out is why the same code performs better on codegolf.tk than dwitter. Not trying to advertise, but it's true and it was just an accidental product of how it was made i guess. E.g. compare d/11913 to https://codegolf.tk/a/366 The code is identical, but on my computer the latter runs visibly smoother. ¯\_(ツ)_/¯ If any plucky ducks want to compare sources, the frontend of codegolf.tk is here https://github.com/srmcgann/codegolf2.0, and the backend: https://github.com/srmcgann/codegolf/blob/ma…
u/rnbw

this is just a wonder to behold
u/joeytwiddle

It's worth investigating cantelope. Someone reported it here: https://github.com/lionleaf/dwitter/issues/4… How can we display framerate on CodeGolf.tk?
u/f8f82804

#d3 #perspective #model

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pavel

function u(t) {

t?c.width|=0:(i=A=240,j=B=80,p=q=-9)
x[f='fillRect'](i+=p=i<7*A?p:-p,840,A,A)
x[f](j+=q=j>0?q:-q,1e3,B,B)
j>i-B&&(j=i-B,p+=s=(q-p)/5,q-=s*9)

Jan 24 2019 10:56 PM UTC

}// 140/140

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Perfect elastic collision #physics #simulation

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u/pavel

Big block is 9x the weight of the little block
u/katkip

This is impressive. Idea from 3blue1brown?
u/iverjo

Wow!
u/bekfast2390

This is like ping-pong!
u/joeytwiddle

Some context: https://www.youtube.com/watch?v=HEfHFsfGXjs 3Blue1Brown
u/katkip

hi, PI
u/Undefined

A fellow 3b1b fan, I see :D
u/joeytwiddle

#3b1b
u/ivylab

I always wait until the big one gets way up to the left side and it goes bam bam bam bam bam :)

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pavel

function u(t) {

with(x)for(c.width|=j=-8*t%1;j++<32;clip(fill(arc(960+40*j*S(j/9+t/5),700,5e3/j,9,13))))beginPath(fillStyle=R(a=9*j,a,a))

Jan 23 2019 11:54 PM UTC

}// 121/140

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#tunnel using clip()

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u/joeytwiddle

Sir. *applause*
u/jylikangas

Smooth!
u/katkip

:0
u/magna

#pavel
u/iverjo

Very nice!
u/bekfast2390

sick dude!!!
u/vain

Fucking cool!
u/visualDev

I am new here sorry how to run this locally?

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pavel

function u(t) {

with(x)for(c.width|=i=9,A=Math.abs;i--;stroke())beginPath(lineWidth=4),ellipse(960,r=540,A(r*C(a=i/5.7+t/3)),A(r*S(a)),a-t/9,0,7)

Jan 25 2019 5:23 AM UTC

}// 129/140

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Messing around with ellipse() #d3

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pavel

remix of d/11920 by u/pavel

function u(t) {

with(x)for(c.width|=j=90;--j;stroke())for(Z=j/2-3*t%.5,lineWidth=1+50/Z/Z,beginPath(i=7);i--;)arc(960,540,1e3/Z,a=(1.257*i+Z/7-t)%6.283,a)

Jan 23 2019 2:48 AM UTC

}// 138/140

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u/joeytwiddle

I like how the middle is going inwards, paradoxically

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pavel

remix of d/11836 by u/cantelope

function u(t) {

with(x)for(c.width|=j=50;--j;stroke())for(Z=.2+j-3*t%1,lineWidth=1+50/Z/Z,beginPath(i=7);i--;)arc(960,540,1e3/Z,a=(2.513*i+Z/7+t/2)%6.283,a)

Jan 23 2019 2:40 AM UTC

}// 140/140

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Uncompressed

u/cantelope

amazing remix, as always :D
u/cantelope

was wondering where you've been.. i shudder to think what you can make within 1kb. feel free to remix my work on codegolf.tk if you like.
u/pavel

Thanks man! I was on vacation in New Zealand for a month with just my phone. I'll check out codegolf.tk, I do like optimizing down to 140.
u/pavel

#uncompressed

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