Dwitter - javascript demos in 140 characters

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: #Food

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DataMeta

function u(t) {

h=5381;w="test";for(i=0;i<w.length;i++)h=((h<<5)+h)+w.charCodeAt(i)
throw h

Aug 1 2020 8:46 PM UTC

}// 75/140

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simple djb-like non-#crypto hash function

u/DataMeta

1000BTC to anyone who implements SHA-2 in 140 bytes ;)

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nikoloffgeorgi

function u(t) {

x.beginPath()
for(i=0;i<500;i++){
x.lineTo(i*3.84+S((i+1)*0.01+t)*200,-200+t*500+C(i*.03+t*4)*t*50)
}
x.stroke()

Jul 30 2020 12:12 PM UTC

}// 112/140

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u/Xen

love it!

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KilledByAPixel

function u(t) {

eval(unescape(escape`𩡯𬠨𭀿𨰮𫱵𭁥𬡈𥁍𣀽𫰺𪐽𫰽𙰧𞱩𚰫🀱𜀲𝀻𫰫👠🁣𫱤𩐠𫱮𨱬𪑣𪰽𭁨𪑳𛡩𫡮𩑲𢁔𣑌🐧𙁻𣐨𪐩🰧𚠧𞡮𯁼𙲷𙱽𙰾𘰼𛱣𫱤𩐾𙁻𪐥𝠴🰧𙰺𙰼𬀾𙱽𨀩𩡯𬠨𫠽𪠽𜀻𪠼𞐻𫠫👍𚁩𛐶𝐫𪠥𜰫𚁪𚰫𛰳𯀰𚐪𝠴𚐩𣐽𪐽🡩🠶𝀦𪐼𞐶𜀦𪐥𝠴🠱𙡃𚁩𚡩𚐾𛠹`.replace(/u../g,'')))

Jul 30 2020 6:37 AM UTC

}// 138/140

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Minesweeper 💣 #interactive #game

u/KilledByAPixel

hint - the sides are safe, there are 117 mines
u/Irratix

0_0
u/Xen

This is epic!!!
u/donbright

holy cow

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tomxor

remix of d/19543 by u/KilledByAPixel

function u(t) {

for(c.width=w=127,i=8e3;i--;t?p&&p<8&T[r=t&8?i-w-r%3:i+w+r%3]<7&&--T[i]&++T[r]:T[i]=r%9)
p=T[i],x.fillRect(X=i&w,Y=i>>7,1,p/9),r=i*t+Y/3&X/3

Jul 29 2020 12:16 AM UTC

}// 140/140

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#Serpinski #Hourglass

u/KilledByAPixel

👍
u/magna

Damn!
u/katkip

wow

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katkip

remix of d/19549 by u/katkip

function u(t) {

X=Y=0;for(i=599;i--;x.fillRect(X*t*39+960,Y*9+1080-t*99,1,1))X=S(Y*X-t)-C(i),Y=C(X-Y+t)

Jul 30 2020 7:22 AM UTC

}// 87/140

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chaos tornado

u/Xen

nice
u/magna

Cool!

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katkip

function u(t) {

eval(unescape(escape`𭁼𯀨𦀽𦐽𦠽𜐩𛁁🐱𜀬𠠽𜠸𛁃🐸𛰳𛁔🐮𜀰𜐻𩡯𬠨𪐽𞐹𞱩𛐭𞰩𩀽𠐪𚁙𛑘𚐪𥀬𡀽𚁘𚠨𠠭𦠩𛑙𚐪𥀬𡠽𚁘𚡙𛑃𚡚𚐪𥀬𦀫👤𛁙𚰽𡀬𦠫👆𛁸𛡦𪑬𫁒𩑣𭀨𜀫𜠲𚡘𚱚𚠲𞐬𝐴𜀫𜐹𚡙𛁚𛰹𚰱𛁚𛰹𚰱𚐠`.replace(/uD./g,``)))

Jul 29 2020 8:20 AM UTC

}// 119/140

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my first #lorenz #attractor #d3

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rodrigo.siqueira

remix of d/19540 by u/rodrigo.siqueira

function u(t) {

x.fillRect(0,0,2e3,2e3)
for(var i=5e3;i--;x.clearRect(150*X+980,1e3-Y*99-460,4,4))
var X=(U=S(i+t)+3)*S(i*i)+S(t-i),Y=U*C(i+S(X)+C(t)*4)

Jul 30 2020 6:52 PM UTC

}// 136/140

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Thin moving tube

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danny@hille.dk

function u(t) {

for(c.width|=i=0;i<99;i+=.1){ 
X=S(i)*i*5+t+540
Y=C(i)*i*5+960
n=X/9+Y/9
o=Y/9-X/9
x.lineTo(Y+S(n)+S(o+t)*15,X+C(n)+C(o)*15)
}x.stroke()

Jul 30 2020 10:42 PM UTC

}// 136/140

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Add a caption here...

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KilledByAPixel

function u(t) {

for(k=(c.width=s=99)*s;--k;!t?T[k]=r%9:p<8&&p&&T[r=k+98+r%3]<7&&(--T[k],++T[r]))r=Math.random(x.fillRect(i=k%s,j=k/s|0,1,(p=T[k])/9))*1e9|0

Jul 27 2020 11:08 PM UTC

}// 139/140

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#Liquid Sim 🌊

Show more comments…
u/tomxor

So cool! haven't seen anything like this before.
u/KilledByAPixel

Thanks! It is an original idea but may have been done before. Need to experiment with it more.
u/tomxor

After pulling it apart this is a lot like the doom fire et al - as an automata it is a non-totalistic anisotropic neighborhood. But having it interact with the static geometry as part of the state is a neat idea. I used a similar technique here: d/18720 but no interesting geometry.
u/tomxor

Now you got me back into automata again :P wondering what other fun anisotropic neighborhoods there might be.
u/donbright

this is incredible
u/sigveseb

This fire stuff is so cool

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function u(t) {

t||(C=10,N=10,c.width/=C,c.height/=C,m=0)
for(n=[i=N*N];i--;){u=i%N;v=-~(i/N);
x.fillText('⚫⚪'[n[i]=m?m[i-1]^m[i]:new Date%2],u*C,v*C)
};m=n

Jul 30 2020 10:11 PM UTC

}// 140/140

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no room for games #text

u/Xen

nice!