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.

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Current theme challenge: #Food

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katkip

function u(t) {

if(!t)for(P=[i=300];i--;)P.push([0,C(i)]);for(m of P)x.fillRect(15e2+900*m[0],300+200*m[1],3,3),m[0]+=C(m[1]),m[1]+=S(m[0])+C(m[1]*m[0])*2.6

Mar 16 2019 3:43 PM UTC

}// 140/140

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Beautiful strange #chaos #attractor. Thx to u/Xen for golfing 3 bytes <3

u/Xen

looking good mate #KillDaBytes!

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marc8

function u(t) {

c.width|=r=300
with(x){lineWidth=9
for(i=0;i<9;i++)fillRect(z=400+i*100+C(t)*r,400,50,200)
arc(z,h=500,10,0,7)
arc(310,h,r,t,t+6)
stroke()}

Mar 16 2019 2:48 PM UTC

}// 139/140

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#default engine

u/katkip

WOW
u/katkip

Genius idea
u/katkip

This deserves an awesome
u/f8f82804

#mechanism

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andrea270872

remix of d/12771 by u/andrea270872

function u(t) {

c.width|=K=1e3
A=[(t*97%11-5)*K,(t*89%13-6)*K,0]
P=t?P.map(([i,j,z,v])=>[i,j,(z+1)%99,x.fillRect(K+i/z,500+j/z,z,z)]):[A]
P[K]||P.push(A)

Mar 15 2019 7:44 PM UTC

}// 137/140

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Build-up!

Show more comments…
u/Xen

love it
u/pavel

103 for(c.width|=K=k=1e3;k--;z>0&&x.fillRect(K+(k*97/60%11-5)*K/z,500+(k*89/60%13-6)*K/z,z,z))z=(60*t-k)%99
u/pavel

Looks like the code you started with used Math.random at each step which made the ultimate position of each square at time 't' impossible to determine directly. Switching to instead use any function of just t makes it quite simple so there is no need to initialize stuff at time 0 and keep it updated.
u/pavel

I learned that in d/11421 to save chars and make d/11424
u/andrea270872

great. thanks very much
u/andrea270872

In my head I was thinking also that t*97%11 is a pseudo-random generator...
u/katkip

Satisfying

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Jezza

remix of d/12739 by u/LimeLaser

function u(t) {

c.width|=r=Math.random,Z=2e3;p=t?p.map(([i,j,u,v]=[Z*r(),Z*r(),4*r()-2,4*r()])=>[(i+u+Z)%Z,(j+v)%Z,u,v,x.fillRect(i,j,8,8)]):[...Array(4e3)]

Mar 14 2019 11:09 PM UTC

}// 140/140

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Squeezed in some snow that floats left. ❄️❄️❄️

u/tomxor

Left!? Blasphemy! :P
u/katkip

This is so smooth
u/LimeLaser

Nicely done!
u/iverjo

#snow

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katkip

function u(t) {

for(i=999;i--;)r=Math.random()*t*3,x.fillRect(
959+S(r/3+S(r/9+S(r+t)/399)*r*2)*960,
539+S(r/2+C(r/5-C(r+t)/399)*r*2)*540,
2,2);

Mar 13 2019 12:34 PM UTC

}// 128/140

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#waitforit #abstract ink can't escape

u/Ath0r

cool!

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katkip

function u(t) {

r=(X,Y,s)=>{x.beginPath(x.stroke()),x.moveTo(X,Y),x.lineTo(X+S(t*2)*s*4,Y-C(t)*s*4);if(s>4)r(X+S(-t)*s*4,Y-C(t)*s*4,s/1.04)}
r(960,540,19)

Mar 10 2019 4:54 PM UTC

}// 138/140

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Buddha meditating

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katkip

function u(t) {

c.width*=1;t||(Y=0);f=p=>S(p*S(p+t/9))<0;for(i=200;i--;)for(j=200;j--;)if(f(i|j))x.fillRect(560+i*4,100+j*4,4,4)

Mar 9 2019 6:37 PM UTC

}// 112/140

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katkip

function u(t) {

eval(unescape(escape`砮杬潢慬䅬灨愽⸱㭸⹦楬汒散琨〬〬㉥㌬㉥㌩㭲㵍慴栮牡湤潭㭦㵰㴾匨⵰⼴㈫琪㈩㱓⡴⤻景爨椽㠹㤻椭ⴻ⥻堽爨⤪ㄹ㄰ⱙ㵲⠩⨱〷〻楦⡦⡙⼴幘⼴⤩砮捬敡牒散琨堬夬㄰ⰱ〩紻`.replace(/u(..)/g,"$1%")))

Mar 9 2019 8:58 AM UTC

}// 125/140

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Electricity. Sadly, #compressed x.globalAlpha=.1;x.fillRect(0,0,2e3,2e3);r=Math.random;f=p=>S(-p/42+t*2)<S(t);for(i=899;i--;){X=r()*1910,Y=r()*1070;if(f(Y/4^X/4))x.clearRect(X,Y,10,10)};

u/magna

Lovely aesthetic
u/corporateanon

Sometimes i see something like this before i fall asleep
u/mcdxn

or after sneezing!

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rnbw

function u(t) {

c.width=700
x.fillStyle=`#d94`
for(i=-4;i++<53;)for(j=(i+S(t/3+i/3)*10-30);j++<13;)x.fillRect(i*30-30+S(t/3+j)*50,j*30,40,16)

Mar 8 2019 7:29 PM UTC

}// 125/140

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odd... stripes? can i CALL them that??

u/Xen

nicely done
u/katkip

So smooth! :D

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katkip

remix of d/12688 by u/danny@hille.dk

function u(t) {

for(c.width|=i=0;i<668;)x.fillRect(960+S(t+(i/59)+i*3.14)*99,i++*1.5,C(i/19*S(i*3.14-t)+t*9)<0?19:9,17)

Mar 8 2019 12:37 PM UTC

}// 103/140

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Now it's a DNA

u/katkip

actually a double helix spiral because it has no bands
u/rodrigo.siqueira

#dna

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