Dweets awesomed by u/katkip

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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ciaccodavide

remix of d/14505 by u/simonmkwii

function u(t) {

for(x.fillRect(0,0,i=640,i);z=--i**.3;x.fillStyle=R(0,500/--z))x.setTransform(s=20/z+S(t),0,0,s,0,0),x.fillText('*',i%z*99-C(t),t++%z*60)

Dec 30 2020 3:42 PM UTC

}// 137/140

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command line #snowflake

u/andrea270872

Matrix Xmas :D Very cool!

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smtsjhr

function u(t) {

for(c.width|=a=6;a<12.28;a+=.001)x.fillRect(960+(r=-210*(1+S((a)))*(1+.9*C(8*a))*(1+.1*C(24*a))*(1+.05*C(200*a+99*t)))*C(a),960+r*S(a),8,8)

Dec 25 2020 6:53 AM UTC

}// 139/140

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i don't even smoke weed

u/Xen

420

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jwc

function u(t) {

for(c.width|=i=q=r=s=.1;i<t;b=4*i/t,x.fillRect(960+16*(q*C(t)+s*S(t)),540+20*r,b,b),i+=.01)o=r,r+=(q*(28-s)-r)/50,s+=(q*o-2*s)/50,q+=(o-q)/5

Dec 24 2020 10:17 PM UTC

}// 140/140

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Rotating Lorenz Attractor

u/jwc

Deleted my previous attempt and replaced it with this instead because I found an obvious savings that allowed me to improve rect size. If you can save 5 chars, you can replace s*S(t) with (s-28)*S(t) to center the rotation. Alternatively, if you can save one char, you can remove b, make the last two args of fillRect …,4*i/t,4), and use the previous centering method with a small concession to the rect shape.
u/magna

Done! d/21062
u/magna

The key was replacing (q*o-2*s)/50 with q*o/50-s/25
u/jwc

Nice!!

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ciaccodavide

remix of d/21054 by u/ciaccodavide

function u(t) {

eval(unescape(escape`𪑦𚁴🐽𜀩𩡯𬠨𪐽𜠴𜀻𪐭𛐻𚑔𦱩𧐽𪐪𪐥𜰶𜀊𩡯𬠨𪐽𜠴𜀻𪐭𛐻𚑸𛡦𪑬𫁓𭁹𫁥👠𪁳𫀨𙁻𥁛𪑝𯐬𝀲𙐬𝐰𙑠𛁸𛡦𪑬𫁒𩑣𭀨𪐪𞀬𣀪𞀬𞀬𞀩𒡌🐫𚱌𙐱𜰵𒡷𪁩𫁥𚁔𦱐𧐼👔𦱐𚰱𧐩𤀫𚰊𭠽𥁛𤀫𜑝𒡔𦱐𚰱𧐽𥁛𤁝𛁔𦱐𧐽𭠬𤀽𜀠`.replace(/u../g,'')))}{L=0;P=0;

Dec 23 2020 9:08 AM UTC

}// 140/140

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Bubble #Sort #visualization

u/katkip

awesomee!!

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jellyedwards

function u(t) {

x.f=x.fillRect
j=640
for(p=o=960;o--;x.fillStyle=R(o/5+t))x.f(0,o,1e4,9),o>400?x.clearRect(p-C(o)*50,687-t,9,S(o)*50):x.f(j-2*o,o+j,j+4*o,p)

Dec 22 2020 7:48 PM UTC

}// 140/140

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Another dawn of man scene #monolith very #slow sunrise

u/jellyedwards

I wanted an orange background R(o/5+t,o/9) but that's an extra 4 chars
u/jellyedwards

I wanted clouds too but that was an extra 5000 chars
u/jellyedwards

http://idyllopuspress.com/idyllopus/film/ima…
u/pavel

-2 j=640;for(p=o=960;o--;x.fillStyle=R(o/5+t))x[f='fillRect'](0,o,1e4,9),o>400?x.clearRect(p-C(o)*50,687-t,9,S(o)*50):x[f](j-2*o,o+j,j+4*o,p)
u/jellyedwards

Very good spot Pavel!

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katkip

function u(t) {

c.width*=1
p=(s,r=1)=>{x.beginPath();for(i=19;i--;)x.arc(960+S(i*2.513)*s,540+C(i*2.513)*s*r,0,0,0);x.stroke();if(s>20)p(s/2.64,-r)}
p(t**8)

Dec 22 2020 6:36 AM UTC

}// 140/140

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#pentagram #recursive

u/pavel

Reminds me of d/11285

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KilledByAPixel

remix of d/19550 by u/tomxor

function u(t) {

for(c.width=w=127,i=7e3;i--;t?p&T[r=i+w+r%3]<1&&--T[i]&++T[r]:T[i]=r)p=T[i],x.fillRect(X=i&w,Y=i>>7,T[S(t*t*w)*w|0]=1,p/3),r=i*t^Y/14&X/9

Dec 21 2020 5:43 PM UTC

}// 137/140

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Snowed In

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u/DataMeta

super cool
u/KilledByAPixel

#snowflake
u/katkip

#powder physics type
u/Odog8

how does this work!?
u/KilledByAPixel

it is a cellular automata, each frame it tires to move the snow down and left or right randomly if the target cell is empty
u/Odog8

oh wow
u/tomxor

Wow nice! it's great how an effect can take on new meaning when finding a different way to frame it.
u/Qwitter

cool

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KilledByAPixel

function u(t) {

for(T[2931]=i=6001;i--;T[i]&!(T[d+=i]|T[d+e]|T[d-e])&&x.fillRect(i%99*20,i/5,21,T[d]=21))d=(Math.random(e=1)*4|0)*2-1,d>1?d=(d-4)*99:e=99

Dec 20 2020 6:09 AM UTC

}// 137/140

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Maze Growth

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u/Xen

nice!
u/rodrigo.siqueira

I was not able to remix because it's a self-destructive code that can run only once.
u/pavel

Use u instead of T to store the data. u does not persist between edits.
u/KilledByAPixel

ah thanks pavel, good call
u/akx

This reminds me of an algorithm I discovered in 2012: https://akx.github.io/spacefill/spacefill.ht…
u/rodrigo.siqueira

It reminds me of the brain's synapse formation process (synaptogenesis) and neural embryogenesis. May be a similar algorithm (but in 3D or in higher dimensions) could be used in the simulation of stochastic neural networks.

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪀽𭰽𜐰𜀬𪐽𝡥𜰻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚁘𛁙𛀱𛀱𚐩𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱓𚀨𩀽𣑡𭁨𛡨𮑰𫱴𚀵𜀭𚁘👩𙑷𚐬𜠸𛐨𦐽𪐯𭱼𜀩𚐪𚠳𛰨𜡥𜰫𠰨𭀪𜠩𚠱𞐹𜀩𛑴𚠲𜀩𛰲𜀩𚠱𜰵𚱴𚠲𜀰𯐬𞐹𙐬𙁻𝐰𚱃𚁤𛑴𚠴𚐪𝐰𯐥𨀻`.replace(/u../g,'')))

Dec 19 2020 12:27 AM UTC

}// 130/140

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New_Core

function u(t) {

with(x)for(c.width|=i=9;i--;fill())beginPath(fillStyle=R(255-i*255,255-i*9)),arc(X=960+(80-i*9)*S(t+i/9),Y=i*40+99,50+i*50,1,2),lineTo(X,Y)

Dec 16 2020 7:01 PM UTC

}// 139/140

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this year the Christmas tree has a "star" but no decoration

u/pavel

-4 with(x)for(c.width|=i=9;i--;fill(arc(X,Y,50+i*50,1,2)))beginPath(fillStyle=R(255*!i,255-i*9)),moveTo(X=960+(80-i*9)*S(t+i/9),Y=i*40+99)
u/pavel

-1 255*!i -> !i<<7

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