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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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cantelope

function u(t) {

for(x.fillRect(0,0,i=(w=960)*2,i);i--;x.clearRect(w+(v=S(q=i/305+t)*Z)/(Z=C(q)*Z-8)*w,(S(i)-3)/Z*w-99,s=50/Z,s),x.fillStyle=R(v*40))Z=C(i)+4

Jun 22 2018 6:45 PM UTC

}// 140/140

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cantelope

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪁼👪🐳𞀻𪠭🐲𞰩𩡯𬠨𭰽𪐽𜐱𞀻𪐭🐲𞱸𛡢𩑧𪑮𤁡𭁨𚁸𛡳𭁲𫱫𩐨𚐩𚑛𩀽𚁶👩𙐴𚐿𪠺𪐬𩀫𜡝𛡭𨑰𚁫🐾𮀮𫁩𫡥𥁯𚀹𝠰𚱓𚁰🐨𭠿𪐺𪰩𛰹𛠲𜰫𭀩𚠨𩠽𭠿𪰺𪠫𭀪𞐥𜠩𛰨𦠽𭰫𠰨𬀩𚡦𚠳𚐪𜡥𜰬𚀵𞀭𩠩𚠪𜰯𦠭𭰬𮀮𫁩𫡥𥱩𩁴𪀽𝐱𜠯𦠩𚐻`.replace(/u../g,'')))

Apr 4 2020 10:31 AM UTC

}// 140/140

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#vortex #d3

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tomxor

function u(t) {

f=_=>S((X*X+Y*Y)**.5*5+t)
eval(unescape(escape`景爨爽ㄶⱣ⹷楤瑨㵩㵲⨱㈻椭㴱⽲㭸⹦楬汒散琨爪⡘⨲⭙⬶⤬爪⡘⼲ⵙ⬳⭚⤬㌬㌩⥚㴱ⵦ⡘㵩┲ⴱⱙ㵩⽲⼶ⴱ⤬砮晩汬却祬攽恈卌⠤筚⨱㈰紬㤹┬㔰╠`.replace(/u(..)/g,"$1%")))

Mar 6 2019 9:35 PM UTC

}// 140/140

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Surface Plot #application

u/tomxor

Mini surface plotter! for visualising 2D scalar fields. Plug your own function into f :)
u/f8f82804

#d3
u/aleamb

wow!
u/katkip

f=_=>S(X*X*t+Y*Y*t)+C(X*X*t-Y*Y*t)
u/tomxor

#app

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f8f82804

remix of d/11689 by u/f8f82804

function u(t) {

for(i=c.width^=0;i--;x.fillRect(X/d+960,Y/d/.9-1150,s=47-d*2e4,s))a=S(ϕ=i/612),θ=i*37+C(i/99+t),d=Math.hypot(X=S(θ)*a,Y=C(ϕ)+3,C(θ)*a+5)/3e3

Jan 11 2019 8:11 PM UTC

}// 140/140

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#waves on a #perspectives #sphere -- #d3 #pointcloud

u/f8f82804

this dweet uses a better perspective transform based on Math.hypot -- #hypot
u/f8f82804

The projection still isn't perfect, because I'm rotating the sphere's axis towards the viewer by positioning it below the camera. The resulting distortion is approximately corrected by scaling the Y coordinate with /.9.
u/f8f82804

#perspective

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pavel

function u(t) {

for(w=i=c.width|=h=Math.PI/2;i--;x.fillRect(w/2+r*C(i+t),(i<w/3?w/3:i)/2+r/2*S(i+t)*S(t),4,10))r=(i<w/2?i:w-i)/2/C(i%h-h/4-(i%h>h/2)*h/2)

Dec 19 2018 10:57 PM UTC

}// 137/140

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Diamond

u/joeytwiddle

#model
u/f8f82804

#d3

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f8f82804

remix of d/9617 by u/cantelope

function u(t) {

c.width=480;x.translate(w=240,130);x.rotate(S(t));for(i=17;i--;x.lineTo(w*.7*S(p=1.57*i-t+(g=i/4|0)*11)/(Z=2+C(p)),w*(g%2-.5)/Z));x.stroke()

Sep 6 2018 9:32 PM UTC

}// 140/140

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compound 3D rotations #d3 #cube #perspective

u/donbright

awesome
u/cantelope

neat trick :)
u/f8f82804

#wireframe

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ETHproductions

function u(t) {

c.width|=Z=256;for(Y=1;~Y;Y-=4/Z)for(X=1;~X;X-=4/Z)Math.atan2(((a=Math.acos)(X/(1-Y*Y)**.5)+t)%6.28,a(Y))*9&1&&x.fillRect(Z-X*Z,Z-Y*Z,4,4)

Jan 8 2018 9:23 PM UTC

}// 138/140

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A completely different approach at a rotating patterned sphere: raytracing!

u/sigveseb

nice
u/Xen

mission completed ;-)
u/magna

hax!
u/13thptr

#raytrace
u/13thptr

#sphere #d3

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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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rodrigo.siqueira

remix of d/17433 by u/rodrigo.siqueira

function u(t) {

for(i=780;i--;x.fillStyle=R(i/2+Y,Y/2,Y/3))x.fillRect(X=S(r=i**5)*i+i*S(t*7)/5+945-i/2,(Y=C(r**2)*i)+400,Z=i,i)

May 8 2020 3:22 PM UTC

}// 111/140

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Perspective #cavern #d3 #tunnel

u/sigveseb

So cool colors on this one
u/KilledByAPixel

it looks 3d, trippy!

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username

remix of d/9690 by u/donbright

function u(t) {

for(c.width|=i=0;i<5e3;i++)Φ=Math.acos(1-2*i/99/99),Θ=10.1664*i,x.fillRect(500*(2+C(Θ)*S(Φ)*S(t)+C(Φ)*C(t)),500*(1+S(Θ)*S(Φ)),9,9)

Nov 26 2019 3:53 PM UTC

}// 130/140

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half a sphere

u/username

#randomremix no 38
u/f8f82804

#d3 #sphere #model
u/fourier.space

If I blink, it rotates both ways
u/username

u/fourier.space actual f, I see it too
u/username

u/fourier.space I missed to mention you on d/16759

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