Top #sphere dweets

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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rodrigo.siqueira

remix of d/17179 by u/rodrigo.siqueira

function u(t) {

c.width+=X=Y=Z=f=.04
for(i=4e3;i--;x.lineTo(980+780*X*C(t)+Y*S(t)*200,500-Z*999+Y*99))
X+=(Z-Y)/8,Y+=X+Z*Y/5,Z+=(f-X*X+f*Z*X)/9
x.stroke()

Oct 7 2020 1:26 PM UTC

}// 138/140

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The Aizawa Attractor (stable version) #attractor #sphere

u/rodrigo.siqueira

I posted a color version on Twitter https://twitter.com/rsiqueira/status/1313990… #pumpkin
u/katkip

wha-. looks good

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hnen

function u(t) {

c.width=2e3;w=1e3;
for(i=1;i<w;i++){y=(i*i)%w-500;a=i%6.28+t;s=10*(2+C(a));x.fillRect(w+S(a)*Math.sqrt(25e4-y*y),60+1e3/2+y,s,s);}

Jan 2 2018 2:10 PM UTC

}// 131/140

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u/joeytwiddle

#sphere

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f8f82804

remix of d/9174 by u/f8f82804

function u(t) {

with(x)for(i=s=311;--i;beginPath(fillStyle=`hsl(${i}rad 90%${99-i/2}%`))fill(arc(s*(A=S(a=i/99))*S(b=t+i)+960,220*(A*C(b)-C(a)+2),60*A,0,7))

May 23 2022 5:18 PM UTC

}// 140/140

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#rainbow #sphere demake -- #d3 #shading #pbr

u/rh2

very cool

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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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pavel

function u(t) {

for(i=1e4;i--;x.fillRect(660+u+v,220+u-v,32,32))r=(50*i-i*i/200)**.5,u=i/17+r/2*S(a=i/4+32*frame),v=r*C(a),x.fillStyle=`hsl(${a/7},69%,50%`

Dec 5 2021 9:39 PM UTC

}// 139/140

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u/vain

Well done! Try to change "v,32,32" to "v,32,.02" or "v,32,.05" or "32,.2" to archive some interesting effects.
u/KilledByAPixel

you probably already know but you can remove the hsl comas to save a byte hsl(${a/7} 69%50%
u/pavel

That does not work in Safari, the color will always be black.
u/f8f82804

#sphere

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f8f82804

remix of d/9676 by u/f8f82804

function u(t) {

eval(unescape(escape`景爨椽挮睩摴桞㴰㭩ⴭ㭸⹢敧楮偡瑨⡸⹦楬氨⤩⥃⡡㵴⵩⤾〦♸⹥汬楰獥⠹㘰⬨堽⡩⨹㘰⵩⩩⤪⨮㔪匨愩⤬㘰⭩Ⱘ猽㈵⴨匨愭ㄩ⨨戽⠱⴨⡙㵩ⴴ㠰⤯㐸〩⨪㈩⨪⸵⤩⨪㐪㈴⤪䌨愩⩢ⱳⱍ慴栮慴慮⡙⽘⤬〬㜩`.replace(/u(..)/g,"$1%")))

Sep 5 2018 8:57 PM UTC

}// 138/140

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#specular #d3 #sphere #animated #compressed

Show more comments…
u/f8f82804

for(i=c.width^=0;i--;x.beginPath(x.fill()))C(a=t-i)>0&&x.ellipse(960+(X=(i*960-i*i)**.5*S(a)),60+i,(s=25-(S(a-1)*(b=(1-((Y=i-480)/480)**2)**.5))**4*24)*C(a)*b,s,Math.atan(Y/X),0,7)
u/joeytwiddle

I like how the circles become ellipses at the edges. https://codegolf.tk/a/254
u/magna

WHOA
u/f8f82804

u/joeytwiddle: that's the whole point of this demo, the lighting is just there because I had to compress it and had leftover space
u/f8f82804

you can see this concept implemented without compression in d/9676
u/iverjo

Very nice!
u/f8f82804

#fullhd

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corruptio

remix of d/5769 by u/ETHproductions

function u(t) {

for(c.width=256,Z=X=64;--X+Z;)for(Y=Z;--Y+Z;)x.fillRect(X+Z,Y+Z,(Math.acos(X/(Z*Z-Y*Y)**.5)+t)%6/(Y/Z+2)*8&1,1-(X-Y+Z)/2/(X*X+Y*Y+Z*Z)**.5)

Jan 10 2018 9:43 AM UTC

}// 139/140

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Added a directional light source

u/ETHproductions

Quite an amazing feat to get this into 140 chars :-)
u/f8f82804

Nice! #sphere #raytrace #shading

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cantelope

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡦楬汒散琨〬〬挮睩摴栽⡷㴵㌰⤪㈬ㅥ㌩ⱳ瑲潫敓瑹汥㴧⌶晡✬椽㌲㭩ⴭ㭳瑲潫攨⤩景爨樽㌳㭪ⴭ㭬楮敔漨眫匨瀩⩓⡱⤯娪眬㈹㠫䌨焩⽚⩷⤩娽䌨瀽⡩㸱㘿樺椩⼵⸱⭴⼸⤪匨焽⡩㸱㘿椭ㄶ㩪⤯㔩ⴲ⸲`.replace(/u(..)/g,"$1%")))

Sep 15 2018 9:02 PM UTC

}// 140/140

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u/f8f82804

#wireframe #perspective #sphere
u/donbright

i really need to understand this escape stuff some day
u/cantelope

@donbright, https://www.dwitter.net/d/9207
u/joeytwiddle

Many Bothans died to bring us this dweet

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KilledByAPixel

remix of d/23497 by u/danny@hille.dk

function u(t) {

for(c.width=w=255,i=4e4;i--;)x.fillRect(a=i%w,b=i/w,((o=(3-(4-5*(e=((X=2*b-w)*X+(Y=2*a-w)*Y)/w/w)+S(t))**.5)/++e)*Y-w*S(t)&w^X*o+t*w&w)/w,1)

Aug 8 2021 1:41 PM UTC

}// 140/140

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Xor Sphere #uncompressed

Show more comments…
u/danny@hille.dk

Nice work!, I actually did try a solution with fillRect - but it totally kills my laptop, runs kinda ok on my phone though (I get around 11fps with this dweet on my laptop, 28 on my phone)
u/danny@hille.dk

btw nice trick with ++e, i haven't seen that before, I'll put it on my toolbelt right away :-)
u/KilledByAPixel

Yep, had to make some sacrifices for speed. You can do w=127 and get a pretty good fps!
u/danny@hille.dk

this is my aptempt: reduced the resolution to get at bit more performance: c.width=w=127;for(m=w*w;m--;x.fillRect(m%w,m/w,1,(Y*(o=(3-(4-5*e+S(t))**.5)/(e+1))*w+t*w&w^X*o*w&w)/w))e=(X=1-4*m/w/w)*X+(Y=-2+4*(m%w)/w)*Y
u/danny@hille.dk

with the ++e trick its only 137 bytes :-)
u/danny@hille.dk

Sorry i hadnt seen you wrote back, yep i did 127, (any pow(2)-1 will work for the xor pattern)
u/aleamb

#sphere
u/donbright

dude

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Whimpers

function u(t) {

for(a=b=u=c.width|=i=0;i++<99*t;x.fillRect(960+800*C(a+t)*S(b)/z,540+800*C(b)/z,s=20/z/z,s))a+=C(t**(1/t)),z=2+S(a+t)*S(b+=S(u)/69)

Feb 26 2020 5:22 PM UTC

}// 131/140

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Show more comments…
u/Xen

#waitforit very nicely!
u/aleamb

love it
u/EracYonchbas

Complete Garbage
u/joeytwiddle

#sphere
u/ivylab

I do noooot understand how but I love these
u/EarickYakbiss

utter trash
u/KilledByAPixel

remix of d/13148

dwitter.net | #sphere