Dweets by u/yonatan

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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yonatan

function u(t) {

eval(unescape(escape`眽挮睩摴栽㌰〻愽漽㹻景爨瀠楮⁯⥴桩獛灛そ⭰嬶嵝㵰紻愨砩㭸孧䍝㴧摡牫敮✻景爨椽㌰㭩ⴭ㭸学捝⠰ⰰⱷⱷ⤩樽眫琪㤹ⱡ⡧㵸学祝㵸季剝⡘㵓⡩⤪樥眬夽䌨椩⩪╷ⰹ㤬堬夬〩⤬杛慯崨〬✣晦昧⤬杛慯崨ㄬ刨⤩`.replace(/u(..)/g,"$1%")))

Oct 23 2018 10:08 AM UTC

}// 140/140

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Worley noise - via https://codepen.io/supah/pen/oaEZqg

u/yonatan

src: w=c.width=300;a=o=>{for(p in o)this[p[0]+p[6]]=p};a(x);x[gC]='darken';for(i=30;i--;x[fc](0,0,w,w))j=w+t*99,a(g=x[fy]=x[cR](X=S(i)*j%w,Y=C(i)*j%w,99,X,Y,0)),g[ao](0,'#fff'),g[ao](1,R())
u/lionleaf

#worley

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yonatan

remix of d/10553 by u/yonatan

function u(t) {

c.width=342
y=w=64
for(i=7;i--;x.drawImage(c,0,y-j,j,j,0,0,w,w))for(j=2**i,k=j*j;k--;y+=!X)x.fillRect(X=k%j|0,y,S(k**4-t),.66**i)

Oct 21 2018 9:50 PM UTC

}// 129/140

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Noise in debug-mode - delete the 342 to fill the viewport

u/yonatan

Maybe chrome does bilinear interpolation and firefox doesn't?
u/Joachim

#noise

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yonatan

function u(t) {

w=c.width=64
h=40
for(i=5e3;i--;)i>6?x.fillRect(i&63,(i>>6)+h,s=S(i**4),s):x.drawImage(c,0,h+t%h,h,w,0,0,z=2**i*64,z,x.globalAlpha=i**.5/9)

Oct 19 2018 5:23 AM UTC

}// 139/140

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Value #noise with #fbm

u/yonatan

some cross-browser issues. better on chrome.
u/iverjo

#clouds
u/aleamb

wow! superb and very smart!

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yonatan

function u(t) {

for(k=c.width=314;T=k--/5;x.arc(99+(Y*S(t)+X*C(t))*r,80+(2*C(2*T)+C(T))*r,r/2,0,7))X=2*S(2*T)-S(T),Y=S(3*T),r=(9+X*S(t)-Y*C(t))*2
x.stroke()

Oct 17 2018 1:48 PM UTC

}// 140/140

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#trefoil #knot

u/katkip

this looks nice
u/tomxor

Neat knot! looking forward to playing with this one.
u/iverjo

Hot or knot?

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yonatan

function u(t) {

c.width=-1
f=(u,v,a,r)=>r<1?x.lineTo(u,v):f(u+S(a)*r,v+C(a)*r,a*(z=0|t)+t/z,r/3)
for(i=1e3;i--;)j=i*2*Math.PI/999,f(150,84,j,55)
x.stroke()

Oct 17 2018 6:43 AM UTC

}// 139/140

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u/BalintCsala

What a coincidence https://math.stackexchange.com/questions/183…
u/yonatan

Wow! that's exactly how this works (circles around circles around circles)
u/katkip

Awesome
u/joeytwiddle

Yeah these wobbly circles are cool #spirograph #pattern
u/katkip

this is a low iteration #fractal

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yonatan

remix of d/10334 by u/yonatan

function u(t) {

c.width|=c.style.background='radial-gradient(tan,#000'
for(k=4e3;k--;x.fillRect(960+(k%9/4+S(t)-1)*20*$,640+k/9,2.5*$,k>9?.5:-200))$=20+k/81

Oct 12 2018 5:32 PM UTC

}// 140/140

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#default

Show more comments…
u/donbright

WWWWWWWWWWOAH
u/prplz

this is the one
u/iverjo

#shadows
u/sigveseb

YES! SO GOOD!
u/sigveseb

and it's a #default too! :P
u/loni_art

yooooooooooooooooooo!
u/katkip

lol nice
u/aleamb

great!
u/veubeke

<3
u/katkip

64 awesomes! 29/11/2019
u/dull_pixel

#raytracing
u/vain

amazing! Like the added gradient and shadow fx. ++++

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yonatan

remix of d/10321 by u/veubeke

function u(t) {

c.width^=0
for(i=9;i--;)for(k=99;k--;x.fillRect(960+(i/4+S(t)-1)*20*$,590+(k||1),50*$/20,k?.5-k/200:-200))$=20+(9+k)/9

Oct 12 2018 11:39 AM UTC

}// 118/140

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u/donbright

amazing
u/katkip

#perspective

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yonatan

function u(t) {

a='fillRect'
b='clearRect'
n=C(t/2)>0
x[n?b:a](0,0,2e3,2e3)
for(i=9;i--;x[n?a:b](960+(i-4-n/2)*d,540-d,d/2,d*2))d=330-C(t)*220

Oct 11 2018 9:19 AM UTC

}// 126/140

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#default

Show more comments…
u/katkip

this
u/katkip

is one
u/katkip

of the best defaults
u/katkip

I have ever seen
u/katkip

#illusion
u/magna

Dave would be proud.
u/joeytwiddle

#infinite #loop

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yonatan

function u(t) {

c.width=-1
for(i=2e3;i--;x.fillRect(150+C(--m)*r,30+i/15+S(m)*r/2,9,6))r=9+C(i/770)**2*44,x.fillStyle=R(a=S(m=i+t)**8*255+128,a*.7,a/4,i/66)

Oct 8 2018 7:42 AM UTC

}// 140/140

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http://zozuar.org/txt/chalice/

Show more comments…
u/BalintCsala

The scariest part of this halloween is how easily you can kill anyone's self-esteem
u/firegodjr

-10 self esteem but +50 knowledge with that nice write-up. Thanks for that :)
u/katkip

saint gral
u/hvianna

Awesome! Thanks for the tutorial!!
u/iverjo

Kudos for the write-up. I like that I can see the result of the code in each revision
u/BirdsTweetCodersDweet

Yeah, these write-up tutorials showing the step-by-step changes in the code are amazing... Thanks!
u/BirdsTweetCodersDweet

P.S I wouldn't say it "devolved" into a demo - demos are good!
u/joeytwiddle

#model #lighting #holygrail

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yonatan

function u(t) {

c.width=99
for(i=0;i++<6e3;x.fillRect(X,Y,1,1))Y=i/99|0,X=i%99,U=X-50,V=Y-30,h=S((U*U^V*V^t*t)**.2-t*9),x.fillStyle=R(n=99+h*99,n*2,n*3)

Oct 2 2018 9:30 PM UTC

}// 136/140

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u/donbright

omg
u/donbright

i feel like you could write an entire book explaining your dweets, one dweet per chapter, it would be like 300 pages
u/Qwitter

yikes how did you find this! Awesome

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