Dweets awesomed by u/cshadows

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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ArthurThuczsec

remix of d/24451 by u/pavel

function u(t) {

for(i=1e4;i--;x.fillRect(660+u+v,220+u-v,6,9))r=(50*i-i*i/200)**.5,u=i/17+r/2*S(a=i/4+t*399),v=r*C(a),x.fillStyle=`hsl(${a},89%,50%,.05`

Dec 6 2021 5:58 PM UTC

}// 136/140

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u/vain

Very nice!
u/f8f82804

#d3 #sphere

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BriSeven

remix of d/24437 by u/BriSeven

function u(t) {

c.width*=1
for(i=15;i--;x.setTransform(C(n=t+C(t)*i/9)*2,-S(n),S(n)*2,C(n),960,99+i*60),x.font='5cm a')x.fillText([...'💔🧡💛💚💙💜'][i%5],-70,70)

Dec 6 2021 7:05 AM UTC

}// 140/140

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Stack of Hearts

u/vain

Nice!
u/vain

Btw... shouldn't "[i%5]" be "[i%6]"? Else you could save 1 char. :) What do these three points mean you used here: "fillText([... ,'" ?
u/BriSeven

Whoops, you're right. The ... is the spread operator, it splits the string in a unicode friendly way, and assigns the individual characters to the enclosing array literal.
u/BriSeven

@vain do notifications work on dwitter?
u/BriSeven

the ... next to the string is actually a special case. more generally it works on anything that implements the "iterator protocol" which is lots of stuff, but mostly arrays and array like things.

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cshadows

remix of d/19297 by u/rodrigo.siqueira

function u(t) {

for(c.width|=m=j=154;j--;)for(i=12;i--;x.font='14em"')x.fillStyle=`hsl(${j*8},50%,50%)`,x.fillText('◢◣◤◥'[S(i*j*t/70+t/70)**2*4|2],i*m,j*m)

Jul 3 2020 1:24 AM UTC

}// 139/140

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cshadows

remix of d/13920 by u/WasifBoomz

function u(t) {

if(t==0)a=b=0
if(b==0)a+=50
if(a>2200)b=1
if(b==1)a-=50
if(a<-300)b=0
c.width=1920
x.arc(a,540,Math.random()*3000,1,9)
x.fill()

Jun 13 2020 1:13 AM UTC

}// 127/140

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cshadows

remix of d/19095 by u/lifthrasiir

function u(t) {

x[a='fillStyle']='#eff3';x[b='fillRect'](0,i=0,w=2e3,w);x[a]='#0008';for(u=i=t*900|0;i++<w+u;)x[b](i-u-69+S(i+t)*49,C(i*i)*w,60,C(i+t*9)*30)

Jun 13 2020 1:12 AM UTC

}// 140/140

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u/Xen

nice!

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cshadows

remix of d/19085 by u/pavel

function u(t) {

for(i=c.width|=z=[];i--;z[i]=[2e3/(6+C(t)/d),S(t++)/d,R(255*d)])d=S(i%1.578+.79);for([s,X,x.fillStyle]of z.sort())x.fillRect(960+s*X,s,9,s)

Jun 13 2020 1:11 AM UTC

}// 139/140

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lifthrasiir

function u(t) {

x[a='fillStyle']='#eff3';x[b='fillRect'](0,i=0,w=2e3,w);x[a]='#0028';for(u=i=t*800|0;i++<w+u;)x[b](i-u-99+S(i+t)*49,C(i*i)*w,60,C(i+t*9)*30)

Jun 12 2020 8:16 PM UTC

}// 140/140

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Something very fishy

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pavel

function u(t) {

for(i=c.width|=z=[];i--;z[i]=[2e3/(6+C(t)/d),S(t++)/d,R(255*d)])d=S(i%1.5708+.79);for([s,X,x.fillStyle]of z.sort())x.fillRect(960+s*X,s,9,s)

Jun 12 2020 2:29 AM UTC

}// 140/140

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Just a #box

u/KilledByAPixel

Whats in the box? 😅
u/tomxor

Nice, painters algorithm in a sort. Also haven't seen direct property assignment inside array destructuring before (x.fillStyle)
u/tomxor

u/killedbyapixel I had a peak: z[i]=[ 9e2/(3+C(t)/d),

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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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stefano

function u(t) {

for(c.width=w=48,z=255,i=0;i<1296;){X=i%w;Y=(++i-X)/w;l=X-C(t*3)*10-24;k=Y-13;x.fillStyle=R(z-Math.sqrt(l*l+k*k)/15*z);x.fillRect(X,Y,1,1)}

Jun 4 2020 9:42 PM UTC

}// 139/140

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Crazy Ball

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