Dweets awesomed by u/marc8

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: #Opposites

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rodrigo.siqueira

remix of d/12952 by u/rodrigo.siqueira

function u(t) {

c.width+=0
for(i=3e3;i--;){
 K=(i&2)-3*C(t)
 X=S(i)*2+S(2*i+t)*K
 Y=C(i)*2-C(2*i+t)*K
 x.fillRect(960+X*80,500+Y*80,5,5)
}

Apr 2 2019 11:54 AM UTC

}// 123/140

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Smooth transitions on the Trefoil endless knot

u/katkip

WOW

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marc8

function u(t) {

c.width|=0
with(x)for(j=3;j;j--){beginPath()
for(i=-4;i<9-C(t)*10;i+=.02)arc(a=i*99,q=-150+j*350,j*50,i-.01,i)
arc(a,q,99,i,i+6)
stroke()}

Mar 31 2019 5:06 PM UTC

}// 138/140

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Curtate, common and prolate throcoid

u/joeytwiddle

#math

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katkip

remix of d/12903 by u/jviide

function u(t) {

t||(z=b=a=0)
for(i=2e3;i--;)
b+=S(4*i+a),a+=S(a*b+z/9999),x.fillRect(960+900*a,990+300*b,.1,.1),z+=.001

Mar 28 2019 8:21 AM UTC

}// 103/140

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#attractor tree #waitforit

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marc8

remix of d/12844 by u/marc8

function u(t) {

c.width|=p=-.5
g=(a,b)=>{for(i=6.28;i>0;){z=S(b*t+i*20+a/340)
x.arc(a,550,999+90*(z>p?z>1+p?1+p:z:p),i-=.01,i)}}
g(0,-6)
x.fill(g(2e3,6))

Mar 24 2019 5:23 PM UTC

}// 137/140

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Better shaped gears thanks to your suggestions

u/katkip

Awesome! even if I don't understand anything of the code
u/katkip

#gear
u/Qwitter

Mesmerizing

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marc8

function u(t) {

c.width|=d=.01
function g(a,b,n,r){for(i=6.28;i>0;)x.arc(a,550,r+50*(S(b*t+i*n)>0),i-=d,i)}x.fill(g(1400,9,14,300));x.fill(g(600,-9,21,450))

Mar 20 2019 10:39 PM UTC

}// 140/140

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Very rough gears. Don't try this at home.

u/tomxor

With an arrow function there is enough space for some tapered gears :) g=(a,b,n,r)=>{ then i-=d,i+.05)
u/tomxor

Arrow function seems to need a space after the } though !
u/somebody

c.width+=0 and replacing d with .1 directly saves two bytes. might be able to improve the tapering or something
u/katkip

#gear
u/aleamb

amazing!

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andrea270872

function u(t) {

c.width|=j=1
for(;j++<15;)for(i=19;i--;x.font=C(t)+6+"em'")x.fillText([...'🏡🌊🌳 '][~~((S((i-~(S(t)*6))*(j+~(C(t)*9))*97)+1)*2)],i*99,j*69)

Mar 20 2019 5:32 PM UTC

}// 137/140

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A map with panning and "zoom"

u/tomxor

oh wow neat! i keep missing these ones cos on chromium linux i get a bunch of tofu - FF is ok though.
u/joeytwiddle

I had a lot of tofu on Ubuntu but then I installed a new Manjaro ;-)
u/tomxor

I'm running minimal a debian, I think it's just missing font packages but can't be bothered to hunt for them. I will try Arch one day when I'm braver :P

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tomxor

function u(t) {

eval(unescape(escape`挮睩摴栽㐸〻挮獴祬攽❦楬瑥爺楮癥牴⠱⥳数楡⠱✻景爨椽㉥㐻椭ⴻ⥸⹦楬汒散琨㈴〫㤹⩓⡘㵩┱㈰⼳㤩⩃⡙㵩⼶攳⤭䌨夫琩⨨娽匨匨太㐩⽃⡘⨱㘯天⤪⨵⨸⤬ㄳ㔫㤹⩃⡘⤭䌨堫琩⩚ⱓ⡘⤬䌨夫娯ㄶ⭴⤪⨷⨳⤻`.replace(/u(..)/g,"$1%")))

Mar 18 2019 11:00 PM UTC

}// 140/140

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Super Dune #planet #space

u/tomxor

A tumultuous and dusty planet trapped in the middle of a binary star system (my excuse for lighting both sides :D). prepend t/=6; if you have a crazy fast GPU
u/lionleaf

Wow, this one is simply amazing!
u/aleamb

wow! superb! amazing!
u/iverjo

Very good!
u/vain

Unbelievable great bump map like fx

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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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Xen

function u(t) {

x.drawImage(c,C(t),S(t))
for(i=9;i--;x.fillRect(Z=400+i*99+S(t)*300,400,50,200),x.strokeRect(Z,400,50,200))x.fillStyle=`hsl(${i*t},50%,50%)`

Mar 15 2019 4:28 PM UTC

}// 140/140

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#default

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marc8

function u(t) {

c.width=480
z=99
for(j=-2*z;j<2*z;j++)
{k=j<-z?j+z:j>z?z-j:0
for(i=0;i<9;i++)x.fillRect(z+i*25+S(t)*75+2*k*C(t+k/z),z+j/4,12+10*k/z,1+k/z)}

Mar 15 2019 4:00 PM UTC

}// 140/140

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#default

u/Xen

nice
u/tomxor

Eery, feels like some kind of swimming creature!

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