Dweets awesomed by u/jgobi

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: #Opposites

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Lerkel

function u(t) {

for(w=S=1920;--S;I>0&&x.fillRect(i%w,i/w,1,1))for(i=Math.random()*w*w,I=32,Z=530,y=z=0;y*z<S*I--;z=2*_*z+(i/w/Z-1))_=y,y=y*y-z*z+(i%w/Z-2)

Aug 16 2020 9:47 PM UTC

}// 138/140

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randomly sampled mandelbrot set (thanks u/jgobi for fitting it in 140 chars!)

u/katkip

#mandelbrot

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jgobi

remix of d/19689 by u/jellyedwards

function u(t) {

for(c.width|=i=400;i--;x.fillRect(960-6+C($)*_,540-6+S($)*_,12,12))$=i/999*Math.PI*(S(t/8)*8),_=500*S(t+i/4),x.fillStyle=`hsl(${_},99%,50%)`

Aug 15 2020 11:41 PM UTC

}// 140/140

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hypnotic sin

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jellyedwards

remix of d/19684 by u/jgobi

function u(t) {

for(c.width|=i=400;i--;x.fillRect(960-6+C($)*_,540-6+S($)*_,12,12))$=i/999*Math.PI*t,_=500*S(t+i/4),x.fillStyle=`hsl(${_},99%,50%)`

Aug 15 2020 9:26 PM UTC

}// 131/140

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Kinda looks like sand on speaker resonance

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Lerkel

function u(t) {

w=S=1920
M=10e3
i=M*t%(w*w)
I=75
Z=500
X=i%w/Z-2
Y=i/w/Z-1
a=b=0
while(a*b<=S*I){a=a*a-b*b+X;b=2*a*b+Y;I--}if(I>60)x.fillRect(i%w,i/w,10,10)

Aug 15 2020 7:07 PM UTC

}// 140/140

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stripey mandelbrot set

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Xen

remix of d/19684 by u/jgobi

function u(t) {

for(i=c.width|=0;i--;x.fillRect(960-6+C($=i/_*t)*_,540-6+S($)*_,29,9))x.fillStyle=`hsl(${_=500*S(t+i)} 99%50%)`

Aug 15 2020 5:27 PM UTC

}// 111/140

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quick test

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jgobi

remix of d/19663 by u/veubeke

function u(t) {

c.width^=0
V=11
for(i=400;i--;x.fillRect(960-6+C($)*_,540-6+S($)*_,12,12))$=i/200*Math.PI**V,_=500*S(t+i/4),x.fillStyle=`hsl(${_},99%,50%)`

Aug 15 2020 12:06 AM UTC

}// 139/140

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a nice variation, try changing V to some other number, it's very fun! ✨

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jgobi

function u(t) {

c.width^=0;for(i=1;i<15;i++)j=4+i%4,x.fillStyle=`hsl(${C(t*i)*180},50%,50%)`,x.fillRect(180+i*100+S(t)*300*C(t*j),400+C(t)*300*S(t*j),50,50)

Aug 14 2020 8:16 PM UTC

}// 140/140

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rainbow dots dance

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veubeke

function u(t) {

c.width^=0
for(i=400;i--;x.fillRect(960-6+C($)*_,540-6+S($)*_,12,12))$=i/200*Math.PI,_=500*S(t+i/4),x.fillStyle=`hsl(${_},99%,50%)`

Aug 12 2020 3:49 PM UTC

}// 131/140

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u/jgobi

it's very pleasing to vary the Math.PI's exponent and see what happens. particularly i liked a lot the 9 (d/19684), 11 and 19. I tried to adjust this to auto change this, but it always get bigger than 140 characters ^^"
u/jgobi

ops, the https://www.dwitter.net/d/19684 is for the 11 variation

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veubeke

function u(t) {

with(x)for(i=3;i--;fill(arc(960+C(t/2+i/12)*700,540+S(t+i/6)*400,i>1?32:i?25:t%.3<.1?3:0,0,7)))beginPath(fillStyle=R($=(i>1?2:!i*3)*99,$,$))

May 5 2020 7:32 PM UTC

}// 140/140

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Life is a Highway

u/pavel

(i>1?2:!i*3)*99 -> [3,0,2][i]*99 -> '302'[i]*99 -> (3^3/n)*99
u/pavel

That last one was generated automatically by https://github.com/pavelb/pavelb.github.io/b…
u/pavel

With var data=[3,0,2].map((a,b)=>[b,a])
u/pavel

Awesome dweet. Great idea and execution.
u/Xen

love it!

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veubeke

function u(t) {

T=t<1?x.translate(960,540,c.width^=0):(t-1)**2
x.font='bold 8em"'
x.fillStyle='#000'
x.rotate(T)
x.fillText('circle',-15,0,(t<1?S(t):1)*500)

Apr 22 2020 5:48 PM UTC

}// 140/140

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Literal #circlechallenge

dwitter.net | jgobi (159)