Top dweets by u/BriSeven

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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BriSeven

function u(t) {

c.width*=1 // clear the canvas
f=(s,...a)=>{for(n in x)n.match(s)&&x[n](...a)}
for(i=0;i<9;i++)f('lRe',400+i*100+S(t)*300,400,50,200);

Mar 24 2020 1:53 AM UTC

}// 136/140

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An unfruitful experiment in compressed canvas method calls.

Show more comments…
u/pavel

How about something like i=0;for(m in x)u[i++]=m;x[u[34]](512,512,512,512) Shortens every call to six chars at the cost of 24... Maybe shorter if you call globalCompositeOperation and some shadow methods too hah.
u/pavel

Or how about this f=(n,a)=>{for(m in x)--n||x[m](...a)};f(35,[512,512,512,512]) 37 chars to reduce every name to one or two chars.
u/pavel

Three or four chars**
u/pavel

aw, actually none of these work for stuff like globalCompositeOperation as they are not methods.
u/BriSeven

Good one, I was also thinking about the possibilities of something like an.. uhh, a tiny bytecode interpreter? take a string and convert it to function calls and parameters somehow.
u/pavel

i=t&&u;for(m in x)x[i++]=x[m];x[34](512,512,512,512) costs 29 to make calls 3 each.
u/pavel

Lastly, can do something niche like for(m in x)x[m[4]]=x[m];x.R(512,512,512,512) that costs 23 and shortens to 1 char but a subset of all calls.
u/BriSeven

wow are these established techniques or did you just think of those now?
u/pavel

i made them up just now but they are simple remixes
u/yonatan

for(p in x)this[p[0]+p[6]]=p sets up shortcuts on this so you can do x[gC] instead of x.globalCompositeOperation (from d/10842)

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BriSeven

remix of d/17897 by u/BriSeven

function u(t) {

x.save()
x.font='30cm A'
x.translate(A=1e3,A/2)
x.rotate(t*999)
x.fillText(t|0,0,A*S(t))
x.fillStyle="#AAF4"
x.fillRect(0,0,A,A)
x.restore()

Mar 11 2020 4:40 AM UTC

}// 140/140

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Variation B

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BriSeven

remix of d/17896 by u/BriSeven

function u(t) {

x.save()
x.font='9cm A'
x.translate(A=1e3,A/2)
x.rotate(t*t)
x.fillText(t|0,0,99*S(t))
x.fillStyle="#FAA4"
x.fillRect(0,0,A,A)
x.restore()

Mar 11 2020 4:19 AM UTC

}// 138/140

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Variation A

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BriSeven

function u(t) {

eval(unescape(escape`楦⠡琩愽䅲牡礨㄰⤮晩汬⠱⤻砮獴牯步⡮敷⁐慴栲䐨恍㤰〠㘰ぬ⑻愮浡瀨⡸⤽㹛䌨砫琯㤩⨱〰ⱓ⡸⭴⼹⤪㄰そ⥽怩⤻愽愮浡瀨⡸Ⱪ⤽㹸⭓⡴⩩⩸⤯⠲〭椫ㄩ⤬砮獴牯步却祬攽恨獬愨⑻琪㌶紬㔰┬㔰┬〮ㄩ⁠`.replace(/u(..)/g,"$1%")))

Mar 3 2020 6:24 AM UTC

}// 138/140

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Chihuli-like colored swish.

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BriSeven

remix of d/3559 by u/BriSeven

function u(t) {

if(!t)d=[];Y=X=t*20;for(i=0;i<1e3;i++) D=(d[i]||1),d[i]=D+S(D*t*i)/9, x.fillRect(X+=C(d[i]), Y+=S(d[i])*9, 5, 5);x.fillStyle=R(S(t)*i/4)

Feb 26 2020 4:44 AM UTC

}// 136/140

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Strata #growth #random

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BriSeven

remix of d/579 by u/BriSeven

function u(t) {

m=127;x.fillStyle=R(C(h=t/2)*m+m,S(h-.5)*m+m,S(-h-.5)*m+m);x.fillRect(t*m,0,4,2e3);x.drawImage(c,2*C(t),0,1920,1060)

Nov 14 2019 2:31 AM UTC

}// 116/140

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Incorporating changes from the comments.

u/Xen

nice

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BriSeven

remix of d/3487 by u/BriSeven

function u(t) {

t<0.1?(x.x=0, x.y=1000,j=5.5):null;
for(i=0;i<10;i++)m=t*3,
x.fillRect(x.x+i*300, x.y, 5, 5);
x.x+=8*S(C(m)*j), x.y+=8*C(S(m)*j);

Nov 8 2017 11:37 AM UTC

}// 131/140

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BriSeven

remix of d/585 by u/BriSeven

function u(t) {

m=140;x.fillStyle=R(C(h=t/2)*m+m,S(h-.5)*m+m,S(-h-.5)*m+m,.004);x.fillRect(99+t%13*m,0,4,2e3);x.drawImage(c,6*C(t*3),0,1920,1078)

Jan 5 2017 1:36 AM UTC

}// 129/140

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spoke too soon. you can push this even further

u/BriSeven

turn the opacity of the fill up to .5 to see some mad
u/iverjo

trippy ^^

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BriSeven

function u(t) {

for(i=0;i<1920;i+=1){x.fillStyle=i%2?"#FFF":"#000",x.fillRect(i*4+S(t)*20,(t*t*t%(i*i))%997.997,8,8)}

Dec 25 2016 2:10 AM UTC

}// 102/140

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u/iverjo

Moiré
u/BriSeven

i actually posted this on accident looking for a cheaper way to get randomish looking numberss than Math.random()
u/iverjo

Good quest
u/iverjo

In some cases T(veryLargeConstant*x) or S(veryLargeConstant*x) can look random enough

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BriSeven

remix of d/548 by u/BriSeven

function u(t) {

for(i=750;--i;c=256)x.fillStyle=R((d=i%16*27)%c,d/19%c,d/3%c),m=i*(t+4e3)/1e3,n=10*i/200,x.fillRect(n*S(m)*30+960&2047,n*C(m)*30&1023,20,50)

Dec 23 2016 8:39 AM UTC

}// 140/140

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u/donbright

this made me lol

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