Dweets by u/nburn42

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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nburn42

remix of d/19048 by u/nburn42

function u(t) {

if(!t) x.fillRect(0,0,2e3,2e3)
for(j=1,m=x.getImageData(0,0,2e3,1e3),g=m.data;j<8e6;j+=c.width-g[g[j]])g[j]=255-g[j]
x.putImageData(m,0,0)

Jun 5 2020 3:41 AM UTC

}// 138/140

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Better in full screen

u/13thptr

interestingly didn't find it as good in fullscreen

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nburn42

remix of d/19043 by u/nburn42

function u(t) {

if(!t) x.fillRect(0,0,2e3,2e3)
for(j=1,m=x.getImageData(0,0,2e3,1e3),g=m.data;j<8e6;j+=48+g[j])g[j]=255-g[j]
x.putImageData(m,0,0)

Jun 5 2020 3:31 AM UTC

}// 130/140

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u/pavel

If you declare your vars you can't get this to run reasonably well t||x.fillRect(0,0,w=2e3,w);let j=1,m=x.getImageData(0,0,w,w),g=m.data;for(;j<8e6;j+=48+g[j])g[j]=255-g[j];x.putImageData(m,0,0)
u/pavel

you can** get this to run
u/nburn42

Sweet, thanks
u/nburn42

Your code doesn't grab the data every frame, it didn't even cross my mind to only do it once.
u/joeytwiddle

Or just run it in Firefox ;-)

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nburn42

remix of d/19043 by u/nburn42

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(j=t%8e6,m=x.getImageData(0,0,2e3,1e3),g=m.data;j<8e6;j+=5+t)g[~~j]=255-g[~~j]
x.putImageData(m,0,0)

Jun 5 2020 3:02 AM UTC

}// 127/140

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Turns on the fans on my laptop

u/joeytwiddle

#heavy

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nburn42

function u(t) {

if(!t)x.fillRect(0,0,2e3,2e3)
for(j=0,m=x.getImageData(0,0,2e3,1e3),g=m.data;j<300;j+=4)g[~~(8e6*S(t))+j]=255*C(t*9)
x.putImageData(m,0,0)

Jun 5 2020 1:20 AM UTC

}// 138/140

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Trying to play with the raw image data is hard

Show more comments…
u/cshadows

wow!!
u/tomxor

It is hard - shame there isn't a simple buffer to write to
u/nburn42

I wanted to build cellular automata based off raw data, but there is so much overhead involved.
u/nburn42

I'll try anyway.
u/tomxor

What do you mean by raw data? using the frame buffer for state? there are quite a variety of CA implementations here but they are mostly tagged gameoflife regardless of specific rule. I made a larger than life one recently that is capable of >1 radi moore neighborhoods
u/nburn42

I see some of your CA, the are awesome, I'll play around with some of your methods too.

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nburn42

remix of d/19006 by u/tomxor

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𛐱𞱴🱰𛡭𨑰𚀨𦱁𛁂𧐩🐾𬀽𬀮𫑡𬀨𚁛𨐬𨠬𨰽𨐬𩀽𨡝𚐽🠨𮀮𫁩𫡥𥁯𚁡𛁢𛀳𛀳𚐬𬠽𣑡𭁨𛡨𮑰𫱴𚁘👁𛑡𛁙👂𛑢𚑼𯀱𛁲𛰽𚁲𛐸𜀩𚠪𜰯𝱥𝀬𦱡𚰨𨐭𨰩𛰲𚱘𛱲𛁢𚰨𨠭𩀩𛰲𚱙𛱲𛁡𛁢𧐩𚐩𞡰👛𧐻𬁛𭀪𜠦𝠳𧐽𦰹𞐭𭀬𞐹𚱴𧐻𮀮𬱴𬡯𪱥𚀩`.replace(/u../g,'')))

Jun 1 2020 7:28 PM UTC

}// 139/140

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I had to see what it looked like with lines

u/tomxor

cool, i did wonder but didn't think it would fit
u/katkip

ravenkwok

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nburn42

remix of d/19010 by u/KilledByAPixel

function u(t) {

c.width|=0
c.style.filter='invert('
x.font=`5in arial`
x.fillText('BLACK',9,360*t)
x.fillText('LIVES',9,715*t)
x.fillText('MATTER',9,1070*t)

Jun 1 2020 6:43 PM UTC

}// 140/140

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nburn42

remix of d/18984 by u/nburn42

function u(t) {

for(let i=2e3,f=(X,Y,n=8)=>Y?f(X*X*t-Y*Y/n,X*Y-X/Y,t-n):x.fillStyle=`hsl(${n*n*t},100%,50%`;i--;x.fillRect(i,t*90,1,1000))f(i/490-2,1-t/6)

May 27 2020 10:10 PM UTC

}// 138/140

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nburn42

remix of d/18985 by u/nburn42

function u(t) {

for(let i=2e3,f=(X,Y,n=5)=>Y?f(X*X/n-Y*Y,n*X*Y-X,n+0.5):x.fillStyle=`hsl(190,60%,${n*5}%`;i--;x.fillRect(i,t*90,1,100))f(i/490-2,1-t/6)

May 27 2020 9:39 PM UTC

}// 135/140

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nburn42

remix of d/18984 by u/nburn42

function u(t) {

for(let i=2e3,f=(X,Y,n=5)=>Y?f(X*X/n-Y*Y,n*X*Y-X,n+.2):x.fillStyle=`hsl(0,100%,${n*n*t%80}%`;i--;x.fillRect(i,t*90,1,100))f(i/490-2,1-t/6)

May 27 2020 9:32 PM UTC

}// 138/140

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nburn42

remix of d/18982 by u/cshadows

function u(t) {

for(let i=2e3,f=(X,Y,n=5)=>Y?f(X*X/n-Y*Y,n*X*Y-X,n+.2):x.fillStyle=`hsl(${n*t*n},100%,50%`;i--;x.fillRect(i,t*90,1,100))f(i/490-2,1-t/6)

May 27 2020 9:28 PM UTC

}// 136/140

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