Dweets awesomed by u/aleamb

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: #Food

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tongong

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪁼🐰𞱸𛡬𪑮𩑊𫱩𫠽𘡲𫱵𫡤𘠻𩡯𬠨𪐽𝐻𪐭𛐻𮀮𫁩𫡥𥱩𩁴𪀽𜐰𚑛𜀬𜐲𛀰𝐬𜐷𛀰𝐬𜠵𛀱𜠬𜰲𧐮𩡯𬡅𨑣𪀨𚁨𚐽🠊𮰊𬀽𭀫嵮𚁨𛰱𜀫𜠪𪐩𚠴𞐷𞱮👨𙐱𜀥𜰽🐲𞱸𛡥𫁬𪑰𬱥𚀹𝠰𛀲𜀰𚱨𙐱𜀪𞐹𛀳𝀰𚡮𛀱𝰰𚡮𛀰𛁰𛁰𚑽𚐊𮀮𬱴𬡯𪱥𚀩`.replace(/u../g,'')))

Feb 16 2020 8:32 PM UTC

}// 137/140

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Icosahedron

u/13thptr

156: for(c.width|=i=5;i--;x.lineWidth=9)[0,12,5,17,5,25,12,32].map(h=>{s=h%10;n=s%3==2;p=t+~~(h/9+2*i)*497;x.ellipse(960,200+s*99,340*n,170*n,0,p,p)});x.stroke()
u/13thptr

nice first dweet by the way
u/tongong

thank you!

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Cloud

remix of d/17584 by u/New_Core

function u(t) {

c.style.filter=`blur(9px)contrast(15)`
for(c.width|=i=9;i--;){x.fillStyle=R(99,40)
x.fillRect(960+600*S(t/3+i),440+400*C(t/3+i/.6),200,200)}

Feb 15 2020 10:25 AM UTC

}// 140/140

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#magma

u/katkip

wow!

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pavel

remix of d/17613 by u/DaSpider

function u(t) {

with(x)for(i=35;i--;fillStyle=R(320-r,160-r))for(j=6;j--;fill(ellipse(960,540,r=1.2**(i+t%2-2),5*r,(j+i/2+t/6)%6*Math.PI/6,0,7)))beginPath()

Feb 14 2020 3:47 AM UTC

}// 140/140

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#flower

u/katkip

nice
u/ivylab

zomg beautiful!

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Yogeshp3

remix of d/6945 by u/Yogeshp3

function u(t) {

c.style.filter="blur(1vh)sepia()invert(1";c.width|=0,a=[20,9,32,26,14,2,3]
for(i=0;i<7;)x.fillRect(500+i*160,799,50,-320+10*a[i++]*S(i*2*t))

Feb 12 2020 6:49 PM UTC

}// 140/140

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u/Xen

nice! would look good as default

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New_Core

function u(t) {

c.style.filter=`blur(17px)contrast(2e3%)`
for(c.width|=i=11;i--;)x.fillRect(960+600*S(t+i),440+400*C(t+i/.6),200,200)

Feb 12 2020 4:46 PM UTC

}// 117/140

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Aha.. so thats how the metabals was done ;)

Show more comments…
u/New_Core

*metaballs
u/New_Core

probably better use arc.. didnt check fullscreen before posting....
u/New_Core

about 60 px blur was ok for fullscreen here
u/KilledByAPixel

nice technique!
u/corruptio

you can just do c.filter right?
u/corruptio

oh nope, nevermind
u/joeytwiddle

#metaballs good job!
u/sigveseb

Contrast filter, that's clever!

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pavel

remix of d/17562 by u/KilledByAPixel

function u(t) {

c.style.filter="blur(1vh)sepia()invert(";for(c.width=198,k=777;j=--k>>5;x.arc(99,56,r*r,a=(j+k%32)%30*.21+S(r)/2,a))r=j+k%2+t%2-2;x.stroke()

Feb 12 2020 7:37 AM UTC

}// 140/140

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#uncompressed

u/KilledByAPixel

i knew you could do it 😉

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pavel

function u(t) {

for(c.width|=j=21,x.scale(5,5),x.lineJoin="round";j--;)for(i=26;i--;)x.arc(192,108,1.3**(r=j+i%2+t%2),a=(i+j)%24/3.8197+C(r)/2,a);x.stroke()

Feb 11 2020 7:29 AM UTC

}// 140/140

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Creeping

u/katkip

kind #tunnel
u/Yogeshp3

source of mathematics?
u/cantelope

source: pavel
u/pavel

I was inspired by https://twitter.com/beesandbombs/status/1221… I wanted to see if I could draw it with one stroke. Then I just started playing around. +C(r)/2 does most of the work here, if you delete it you can see the reference shape.
u/pavel

%24 is only there to avoid a bug in Safari from angle being too big on arc. /3.8197 is short for *Math.PI/12

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jylikangas

function u(t) {

eval(unescape(escape`𨰮𬱴𮑬𩐮𩡩𫁴𩑲🐢𨡬𭑲𚀱𭡨𚑳𩑰𪑡𚀩𪑮𭡥𬡴𚀮𞐢𒡦𫱲𚁣𛡷𪑤𭁨👩🐭𞐻𚰫𪐼𞐻𤠽𨐽🡸𛡬𪑮𩑔𫰨𜐵𜀫𨐪𝰰𛰨𮠽𪠭𭀪𝐥𜐩𚱃𚁴𚐪𜠰𛀹𜀫𚀹𜀫𤰨𪠫𭀪𝐦𨑼𞐩𚠴𜀭𨐪𚠴𚐯𮠩𚑦𫱲𚁪🐲𜀻𮀮𨡥𩱩𫡐𨑴𪀨𮀮𬱴𬡯𪱥𚀩𚐬𤠨𪐩𛀭𛑪𞱒𚁩𚰱𚐩𤠨𪐩`.replace(/u../g,'')))

Feb 10 2020 3:57 PM UTC

}// 140/140

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To celebrate the launch of devaja.fi

Show more comments…
u/KilledByAPixel

😲
u/rodrigo.siqueira

This is a scene from Dragon's Lair game, where balls were rolling on this grid.
u/sigveseb

no way! daaaamn
u/tomxor

Woaaah! O_O
u/lionleaf

Holy ...! :O
u/katkip

Wow
u/hoplite

Reminded me a bit of https://www.youtube.com/watch?v=6juR6rzAolU :)

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iznax

function u(t) {

eval(unescape(escape`𩡯𬠨𬠽𝐴𜀬𪐽𜡥𜰻𬐽𪐦𜰬𪰽𪐯𝀦𜐵𛁪👩🠾𝠬𣰽𭀫𚁪𚰨𬐾𜀦𬐼𜰩𚐯𝐬𛐭𪐻𮀮𩡩𫁬𤱴𮑬𩐽𤠨𩰽𠰨𪐩𚡲𛁓𚁴𚐪𩰬𜀬𤰨𣰩🀰𯀰𚐬𮀮𩡩𫁬𚁸𦱱🀳🰧𫁩𫡥𥁯𙰺𙱭𫱶𩑔𫰧𧐨𜑥𜰭𠰨𣰩𚡓𚁰🐨𪰫👱🠱𚐯𝐩𚡲𛁲𚱃𚁰𚐪𬠩𚐩𪑦𚁱🠲𚑸𛡢𩑧𪑮𤁡𭁨𚀩`.replace(/u../g,'')))

Feb 9 2020 11:24 PM UTC

}// 140/140

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X-mas Disco Ball

u/rep_movsd

awesome
u/rep_movsd

#underrated

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tomxor

function u(t) {

R?w=128:c.width=w
for(T=S,S=C,C=T,n=0,i=2e4;j=--i/w|i%w*w;n+=~S[i+5]-~S[i-6])x.fillRect(i%w,j%w,R=frame&1,C[j]=R?n>33&n<59?n<46|C[j]:j&!t:n)

Feb 9 2020 1:38 PM UTC

}// 140/140

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#LargerThanLife #Automata Bugs Rule

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u/tomxor

The Larger Than Life "Bugs" rule R5,C0,M1,S34..58,B34..45,NM. You can introduce more entropy by adding spaces to the code (to restart) which causes i&1 to be combined with existing state in the rule's dead space.
u/tomxor

This uses a sliding window to efficiently compute the sum of arbitrary radi Moore neighbourhoods (i.e box blur kernels). It naturally wraps to the next line giving it a kind of twisted toroidal space, which takes less code and is more efficient since it is only necessary to initialise the sliding window once per dimension: O(2n+2r). The FPS is half of what is displayed since every other frame is used to sum the transposed sum of x.
u/tomxor

Other sized w must be a power of 2 and i must be at least w**2+r+1 (r=neighbourhood radius) to allow the sliding window to correctly initialise, otherwise a bad sum will propagate throughout the grid usually causing everything to die.
u/KilledByAPixel

👍 Thanks for the explanation!
u/tomxor

hmm the larger than necessary i seems to be introducing artifacts... change to i=w*w+6 if you want to see the pure rule.
u/katkip

Woow! I remember it from the The Powder Toy game

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