Dweets awesomed by u/DuryDuty

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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DuryDuty

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<5500;i++)
x.fillRect(960+200*C(i)*T(S(t)+i/200000)*2.5,540+200*C(C(t)+i/2)*2.5,20,20)

Jan 12 2018 5:58 AM UTC

}// 128/140

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DuryDuty

function u(t) {

c.width=1920 // clear the canvas
for(i=0;i<50;i++)
x.fillRect(960+50*(i)*T(S(t)+i/2000000),540+200*C(C(t)+i/2)*2.5,20,20)

Jan 12 2018 5:58 AM UTC

}// 121/140

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sandromiccoli

remix of d/5685 by u/sandromiccoli

function u(t) {

s=c.width=2e3;x.fillRect(0,0,s,s);for(i=0;i<99;i++){x.fillStyle="#FFF";x.fillRect((i%2?120:1850)+T(t+i*9)*49,540+C(i/t)*510,199*C(i*99),8)}

Jan 7 2018 3:46 AM UTC

}// 140/140

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Erazed

function u(t) {

w=c.width=2e3;h=5e2;for(i=1e-3;i<9;){X=1e3+i*99*C(3*t/i);Y=h+i*99*S(3*t/i);x.moveTo(X,Y);x.arc(X,Y,i++<1?60:i>6?25-2*i:i<5?i:3,0,9)}x.fill()

Jan 3 2018 11:25 PM UTC

}// 140/140

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xem

function u(t) {

c.width^=0;for(i=0;i<10;i+=.5)for(j=0;j<10;j+=.5)x.arc(900+400*S((i+t/9)*3.14)*C(j*1.57),500+400*S(j*1.57),5,0,6);x.fill()

Oct 21 2017 7:12 AM UTC

}// 122/140

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This is totally not what I wanted to do :)

u/xem

Sphere<3
u/xem

(see remix https://www.dwitter.net/d/3325)
u/iverjo

#sphere

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lurifax

function u(t) {

c.width|=0;for(i=5;--i;)for(j=91;--j;x.fillStyle=`hsl(${j*4},99%,50%)`)x.fillRect(960+500*S(d=j*.0698)*C(e=t+i*.7853),540+500*C(d)*S(e),9,9)

Sep 30 2017 5:16 AM UTC

}// 140/140

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u/Xen

very nice
u/lurifax

Remix #3241- With fix for the annoying black dot and golfed 17b :)

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nystrand

function u(t) {

for(i=c.width+=0;i--;x.fillRect(a*w+1e3,b*w+540,m=w/9-9,m))[a,b,z,w=(z+9+T(t))*19]=t?x[i/3|0]:[S(i),C(i),6*i%8-3],x[i/3|0]=[b+a/77,z,a-b/77]

Aug 19 2017 1:34 PM UTC

}// 140/140

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Show more comments…
u/iverjo

Respect!
u/joeytwiddle

Wow!
u/cantelope

unreal!
u/n0va

Impressive!
u/FireFly

This one is really cool! Keep it up! :)
u/p01

👍
u/donbright

oh man!!!
u/nystrand

thanks for all the nice comments!
u/13thptr

#d3 #perspective

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cantelope

remix of d/2845 by u/cantelope

function u(t) {

A=960,B=540,x.fillRect(0,0,D=2e3,D)
for(i=D;i--;)x.clearRect(A+1/(Z=2.5+C(p=i*C(t/2)/40)*S(q=i/628))*(X=S(p)*S(q))*A,B+C(q)/Z*A,s=69/Z/Z,s)

Jul 10 2017 4:43 AM UTC

}// 140/140

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u/lionleaf

That's really neat!
u/Polyducks

This is amazing! What's the concept behind it? How are you getting the sphere?
u/cantelope

@Polyducks, it's a golfed version of the equation of a sphere [x=sin(p1)*sin(p2);z=cos(p2);z=cos(p1)*sin(p2);] combined with a tiny 3D projector, X=cx+1/z*x*cx; Y=cy+y/z*cx, where cx/cy is center screen, and x/y/z are the 3D coordinates. Hope that makes sense! :)
u/cantelope

*equation of a sphere: [x=sin(p1)*sin(p2);y=cos(p2);z=cos(p1)*sin(p2);]
u/alien

thanks for that, is projector a mathematical construct? does it have other names?
u/cantelope

@alien it's my own invention, the product of years of research into geometry. I wrote a tutorial with a (very ungolfed) version here https://cantelope.org/3D
u/alien

*__*
u/alien

All the lienar algebra and vectorial calculus in my bachelor finnally comes to life in my head... this is soooo cool @cantelope...
u/donbright

bravo... bravo

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fson

function u(t) {

X=960;Y=540;c.width+=0;x.lineWidth=23
x.arc(X,Y,50,0,7);x.fill()
for(i=t;i<t+4;i++)x.beginPath(),x.ellipse(X,Y,250,99,i*1.04,0,7),x.stroke()

Feb 23 2017 1:31 PM UTC

}// 140/140

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u/iverjo

Clean
u/Kalanchoe

so perfect!

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