Dweets awesomed by u/ersagun

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.

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Current theme challenge: #Opposites

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katkip

function u(t) {

z=(a,b)=>C(a*a+b)<0?S(a*b/5):z(1.5*b-a,.4-a);t||(w=0);for(v=9;v--;++w)for(i=1080;i--;)x.fillStyle=R(z(i/990,w/999)*500),x.fillRect(w,i,1,1)

Dec 29 2019 3:49 PM UTC

}// 139/140

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I would like to understand how this works. I made just a random recursive formula and the result is too beautiful! #recursion is awesome

u/katkip

#slow #scanline #fractal
u/poetaster

a rose by any other name is still a rose by any other name is

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katkip

remix of d/16998 by u/katkip

function u(t) {

f=(a,s,d,r)=>{if(d>5)f(a+d*S(r),s+d*C(r),d/2,C(r+t)*2);else x.fillRect(a,s,4,4)};t||(z=0);for(i=9;i--;)f(960,540,200,z+=2.093);

Dec 28 2019 3:51 PM UTC

}// 127/140

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u/DataMeta

#waitforit
u/DataMeta

Starts off seemingly random but resolves into a pattern

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katkip

function u(t) {

z=(a,b)=>C(a)<0?S(a*a-b*b/a):z(b*1.4,1-a);t||(w=0);for(v=9;v--;++w)for(i=1080;i--;)x.fillStyle=R(0,0,z(i/990,w/999)*500),x.fillRect(w,i,1,1)

Dec 28 2019 2:55 PM UTC

}// 140/140

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#fractal

u/katkip

#scanline #slowrender

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rnbw

function u(t) {

for(c.width^=i=0;i++<210;)for(j=0;j++<7;x.fillStyle=`#f`+j*15)x.fillRect(i*9,540-S(a=t-i/80*C(t+i/69)+j*.89)*230,9,Math.max(210*S(a-1.1),0))

Nov 25 2019 7:18 PM UTC

}// 140/140

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an attempt at something like a twister

Show more comments…
u/Xen

mmmmm tasty!
u/tomxor

my exact thoughts #marshmallow
u/katkip

twisted icecream
u/Xen

#flump
u/joeytwiddle

That's a very juicy #twister!
u/cyhawk

I teach 9-year-olds programming and used a tidied up version of this to show them how to figure out how something works. They loved it! Thanks! I've added a bit of gap between the strands to make it easier to understand, and I think it looks good. Like Math.max(180*S(a-1.2),0).
u/rnbw

wow, i would have never thought that my recreational programming would be used for educational purposes. glad i was able to help those kids out on their journeys!
u/danny@hille.dk

Just saw this, nice code man! Save 11 b like this: for(c.width=i=300;i--;)for(j=8;j--;x.fillStyle=#f+j*15)x.fillRect(i,99-S(a=t-i/80*C(t+i/99)+j*.9)*40,1,Math.max(40*S(a-1.1),0))

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jviide

function u(t) {

for(x.translate(0,(S(t)+1)*(c.height|=i=0)/2),x.font='45em"';q=2.6*(i+t*9)%51,x.globalAlpha=q/50,++i<900;x.rotate(1))x.fillText(`🎉`,q*48,q)

Nov 4 2019 10:13 PM UTC

}// 139/140

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Festive spiral

u/katkip

it works only on firefox
u/joeytwiddle

It's fine on Chrome + Linux here. You getting boxes katkip? Upgrade OS!

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DataMeta

function u(t) {

c.style.background=R();with(x)font="144px Impact",fillStyle='#FC0',fillText('光復香港',a=680,540),fillStyle='#EEE',fillText("F R E E  H K",a,a)

Nov 2 2019 2:51 AM UTC

}// 139/140

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My deep respect to those trying to secure a better future when their government has failed them. #freehongkong

u/KilledByAPixel

☮️
u/DataMeta

☮
u/metamero

awesome!! tamo junto

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KilledByAPixel

remix of d/16391 by u/KilledByAPixel

function u(t) {

for(i=340;--i;x.fillRect(960+S(m*m)*q,540+C(m*m)*q,50,50))m=i+120*t,q=1e5/i,x.fillStyle=R(i*i/99,i*i/340)

Oct 31 2019 6:28 AM UTC

}// 105/140

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Supernova ☀

u/katkip

i would like to see this on the sky
u/tomxor

wow!
u/yonatan

and so short!
u/lowtolerance

I don’t understand it at all but I love it

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jellyedwards

remix of d/16288 by u/robbyg

function u(t) {

with(x)for(rect(0,440,a=c.width|=0,a),clip(arc(960,35*t,300,0,7)),i=60;i--;fillStyle=R(z=400-i*t,z/2,i*i-t*t))fillRect(0,i*40,a,25+i/2)

Oct 25 2019 6:39 AM UTC

}// 135/140

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Lots of space to animate it

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KilledByAPixel

remix of d/14796 by u/Xen

function u(t) {

x.fillText(0,t*t&t,t)

Oct 23 2019 6:05 PM UTC

}// 21/140

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Smallest Sierpinski - Takes about 15 minutes to fill out ;)

u/katkip

#record
u/tomxor

i'll just take your word for it :P
u/KilledByAPixel

Final result https://twitter.com/KilledByAPixel/status/11…

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KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𫱲𚁣𛡷𪑤𭁨𯀽𪐽𜐲𞐻𪐭𛐻𨡥𩱩𫡐𨑴𪀨𩡩𫁬𚁥𫁬𪑰𬱥𚀹𝠰𚱓𚁴𚱩𛰹𚐪𞐹𚰳𜀰𚠨𥀿𪐭𞀹𛠵𞠰𚐬𜐱𝀰𛑩𚠸𛁲𛁔🱲𛑲𚡃𚁴𚐪𚠲𜀰𞡲𛰲𛁔🐰𛀰𛀷𚐩𚐩𬠽𪐾𞐰🰨𜡥𝐭𚁩𚠹𛐷𜠰𚐪𚠲𚐪𚠮𝐺𪐾𞀸🱔🐶𞐺𪐪𪐯𜐸𛁧𫁯𨡡𫁁𫁰𪁡👔🰱𞠮𜀳`.replace(/u../g,'')))

Oct 22 2019 11:19 PM UTC

}// 140/140

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Friendly Ghost 👻

u/jellyedwards

Very cool
u/KilledByAPixel

#Inktober day 22: Ghost
u/joeytwiddle

#cute #halloween #ghost

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