Dweets awesomed by u/robbyg

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.

Try the new frontend: beta.dwitter.net
Current theme challenge: #Opposites

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magna

remix of d/28313 by u/KilledByAPixel

function u(t) {

for(i=w=2e3;i--;x.fillRect(i,0,.1,w))x.clearRect((i**3+i%9*t*20)%w,i,3,i%5)
for(i=9;i--;)x.clearRect(417+i*104+S(t)*313,417,52,208)

Aug 20 2023 10:41 PM UTC

}// 131/140

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Cheap remix #default

u/andrea270872

Dwitter! the final frontier! :D ;)

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rodrigo.siqueira

remix of d/28259 by u/rodrigo.siqueira

function u(t) {

c.width|=0
for(i=2e4;i--;x.fillRect(960+C(K=S(i)*i+t/5+a)*999*a+a*S(t)*299,540+S(K)*490*(a),Z=9+30*a*S(t+i/300),Z))a=(i/9999+t/9)**2%2-2

Aug 20 2023 10:34 PM UTC

}// 136/140

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Debris vortex

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KilledByAPixel

remix of d/13273 by u/KilledByAPixel

function u(t) {

for(i=w=2e3;i--;x.fillRect(i,0,.1,w))x.clearRect((i**3+i%9*t*20)%w,i,3,i%5)

Aug 20 2023 6:30 PM UTC

}// 75/140

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2D #Starfield 🌟

u/KilledByAPixel

5 bytes smaller plus trails!

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cie

function u(t) {

x[ṡ="fillStyle"]='#0001';x.fillRect(i=8,0,z=1e4,z);
x[ṡ]='lime';x.font='6em mono';for(w in c)x.fillText(w[u=t*8%i|0]??'',i++*60,u*80%1e3+80)

Aug 19 2023 8:31 PM UTC

}// 140/140

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KilledByAPixel

remix of d/28307 by u/KilledByAPixel

function u(t) {

for(j=5e3;r=j--/(j%(t/500+3)*3);x.fillRect(j,0,.1,2e3))x.clearRect(C(j)*r+960,S(j)*r+540,r/=50,r)

Aug 19 2023 2:57 PM UTC

}// 97/140

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Into The Singularity 🌀

u/Joachim

You never see it coming ;)
u/neimad

It's amazing the things that can be achieved with fillRect

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KilledByAPixel

remix of d/28307 by u/KilledByAPixel

function u(t) {

for(k=0;k<1e4;x.fillRect(960-C(j=k>>3)/(r=(k?(k/99+t)%4:1)/1e3),540-C(j*j)/r,r=k++?.005/r:1e4,r))x.fillStyle=`hsl(${k%8*35} 99%${k&&50}%`

Aug 18 2023 2:13 PM UTC

}// 137/140

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Chromatic Starfield 🌈⭐

Show more comments…
u/aleamb

yeeeeaaaahhh
u/Joachim

PERFECT
u/cantelope

niiiiice
u/tomxor

Where are the blue credits!? Immediate TNG flashback
u/magna

Aberrant!
u/KilledByAPixel

true i was inspired by star trek for this one!

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KilledByAPixel

remix of d/11335 by u/keithclark

function u(t) {

for(j=5e3;r=j--/(9-++t%9);x.fillRect(j,0,.2,2e3))x.clearRect(C(j)*r+960,S(j*j)*r+540,r>>=8,r)

Aug 18 2023 2:10 PM UTC

}// 93/140

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Tiny Starfield 🌠

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rodrigo.siqueira

remix of d/28265 by u/rodrigo.siqueira

function u(t) {

for(c.width%=W=X=2e3;X--;x.fillRect(X,Y*999,1,W))for(Y=1,k=9;k--;Y-=Math.abs(f(3**k*X/W+S(X/299+Y-t)/5)/3**k))f=n=>n+~n+.5

Aug 9 2023 1:54 PM UTC

}// 122/140

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Moving mountains #mountains

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rodrigo.siqueira

remix of d/28264 by u/rodrigo.siqueira

function u(t) {

for(c.width%=X=2e3;X--;x.fillRect(X,Y*600+200,1,3e3))for(Y=1,k=9;k--;Y-=f(t/2-f(3**k*X/1918))/2**k)f=n=>2*(n+~n+.5)**2

Aug 8 2023 7:24 PM UTC

}// 118/140

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Pulsating Blancmange waves

u/robbyg

My eyes can't decide what is foreground and what is background. I think it all depends on the edges: when the black is further up the edge, white is foreground.
u/cantelope

nice

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rodrigo.siqueira

function u(t) {

f=n=>Math.abs(n-Math.round(n))
for(X=1920;X--;){
 Y=1
 for(k=9;k--;){
  Y-=(Math.abs(f(2**k*X/1918))/2**k)
 }
 x.fillRect(X,Y*999,2,9)
}

Aug 7 2023 2:20 PM UTC

}// 136/140

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Blancmange curve (Takagi curve) #fractal

u/rodrigo.siqueira

Based on the discussion: "Unexpected link between pure mathematics and genetics." https://news.ycombinator.com/item?id=37011776
u/rodrigo.siqueira

This fractal curve described by Teiji Takagi in 1901 is constructible by midpoint subdivision. It's called the blancmange curve, because it looks like the French pudding dessert. Implementated here from the "blanc(x)" function: https://en.wikipedia.org/wiki/Blancmange_cur…

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