Dweets awesomed by u/ArthurThuczsec

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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Xen

remix of d/3173 by u/New_Core

function u(t) {

for(a=i=1910;i--;x.fillStyle=`hsla(${a=Z/T(i*C(i)+t)/9},99%,${a}%,.4)`)x.fillRect(i+a*C(t*a),365+a*7,Z=99,Z*C(i))

Sep 16 2017 4:43 PM UTC

}// 113/140

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"i am the god of hellfire and i bring you..."

u/cantelope

2hot4me
u/iverjo

#fire

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Xen

function u(t) {

x.fillText(x.drawImage(c,x.globalAlpha=C(t)+1.5,0,C(t*9)+1*99+1922,S(t*9)+1*99+1082),1,9),x.fillStyle='#'+frame

Sep 1 2017 7:22 PM UTC

}// 111/140

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just a test

u/mmfun

a good test!

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Xen

remix of d/3101 by u/kchplr

function u(t) {

f=frame
'p}¶¼<¼¶}p'.charCodeAt(f/8|0)&1<<f%8|0&&x.fillRect((f/8|0)*9*11,f%8*9*11,99,99)

Aug 24 2017 11:50 PM UTC

}// 89/140

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Xen

remix of d/2982 by u/New_Core

function u(t) {

for(c.width|=i=40;i--;x.fill())i%2>0?a=500:a=0,x.fillStyle=`hsla(${i*9},99%,50%,.4`,x.lineTo(999+a*S(i*.698+t),i>20?a:-a+999)

Jul 31 2017 10:48 PM UTC

}// 125/140

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Xen

remix of d/1105 by u/fson

function u(t) {

x.strokeStyle=R(r=T(t*5)*(N=450),r/.22,N*r*.22);x.arc(N+N,N,(S(t)+1)*N,0,6);x.stroke();x.drawImage(c,T(t),C(t))

Jul 24 2017 12:18 AM UTC

}// 111/140

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u/sigveseb

This is cool!
u/Xen

Thank you. :-)
u/p01

MASSIVE
u/Xen

wicked,, wicked,, jungle is..

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Xen

remix of d/2241 by u/jick

function u(t) {

for(i=2e3;i--;x.fillRect(i,8,2,9),x.fillStyle=R(C(X=t*i)*i,S(X)*i,T(X)*i));x.drawImage(c,-t,t,t+1926,1090);

Jul 20 2017 9:35 PM UTC

}// 107/140

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the lone 't' in drawImage(), change it for '9' or 't*t' or 't*t*t'

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Xen

remix of d/2180 by u/aemkei

function u(t) {

for(i=W=c.width=2e3;i--;x.fillRect(W*(T(i)+s*t)%W,540+i*S(s*W),9,9))s=69/i

Jul 16 2017 7:51 PM UTC

}// 74/140

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u/innovati

entering hyperspace! 🚀✨
u/Xen

Destination: Terror!

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Xen

remix of d/547 by u/BriSeven

function u(t) {

X=960,Y=X*t%900,a=1;for(i=99;--i;a+=8*Math.random())x.fillStyle=T(a)<9?R(t-a,a/2,1,1):"#FFA",x.fillRect(X+=S(a)*Y/49,Y+=C(a)*4,4,4)

Jul 16 2017 7:36 PM UTC

}// 131/140

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Show more comments…
u/cantelope

this is awesome, but it looks identical to another one you posted...
u/Xen

this is my only tree one? :-o
u/donbright

happy little tree
u/tibbifox

beautiful
u/jick

This is wonderful.
u/innovati

🌲 👨‍🎨🎨
u/itsjustmustafa

It looks so natural!
u/Xen

thank you :-)

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New_Core

function u(t) {

c.width|=1
X=960
Y=700
for(i=320;i--;x.fillRect(X,Y,7,7))X+=6*C(a=i/50-9*S(t/4)*S(i/10)),Y+=6*S(a)

Jul 15 2017 7:37 PM UTC

}// 98/140

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u/Xen

done remix 2882
u/donbright

excellent
u/katkip

smooth

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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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Show more comments…
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
u/ximavus

Amazing!

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