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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taupelink

remix of d/14940 by u/taupelink

function u(t) {

g=(a,b)=>b?g(b,a%b):a;j=t?j+1:33;for(i=32;i--;)x.fillStyle=`hsl(${99*i%360},99%,${10*g(i,j/30|0)}%)`,x.fillRect(i%8*240,(i>>3)*270,235,266)

Aug 10 2019 4:25 AM UTC

}// 139/140

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Using a GCD formula for lightness

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taupelink

remix of d/15101 by u/taupelink

function u(t) {

r={valueOf:Math.random};h=256;x.globalAlpha=.7;x.fillStyle=['#000','#03F','#F30','#FC0','#0F3'][(r*8|0)%5];x.fillRect(r*2e3,r*1e3,2*r*h,r*h)

Aug 10 2019 11:44 PM UTC

}// 140/140

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d/15376

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DataMeta

remix of d/15356 by u/DataMeta

function u(t) {

c.width=600;for(i=360;i-=8;)for(j=360;j-=8;)h=t*t**.4,
x.fillRect(122+i,j,g=((h^i)&(j^h))**.1*t%8,g)

Aug 9 2019 11:16 PM UTC

}// 100/140

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h=64+t*t**.4

u/rodrigo.siqueira

#sierpinski

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KilledByAPixel

remix of d/15305 by u/katkip

function u(t) {

for(c.width|=i=7;i--;)for(k=j=1;j;j+=k,j-99?0:k=-1)x.arc(960,540,j*13,a=i/2+j/2-t/2+9*S(j/5+t*5)*k/49,a)
x.rect(0,0,2e3,2e3)
x.fill`evenodd`

Aug 6 2019 4:53 PM UTC

}// 140/140

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Remix #3

u/katkip

#rc_kbap
u/katkip

btw awesome
u/asad123

nice

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KilledByAPixel

function u(t) {

c.width|=0
with(x)for(i=500;i--;fill())fillStyle=R(255,i/2,i/4),beginPath(),arc(960+S(t-i/339)*800,540+S(i/159)*S(t*14-i/19)*300,80,0,7)

Aug 6 2019 3:32 PM UTC

}// 136/140

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#beesandbombs demake 🐝&💣

u/KilledByAPixel

https://twitter.com/beesandbombs/status/1158…
u/katkip

this is cute
u/robbyg

lol, I was coming here to try to replicate this. Well done!
u/aleamb

nice!

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robbyg

remix of d/15346 by u/robbyg

function u(t) {

P=Math.PI*2
for(y=12;y--;)x.fillStyle=R(0,h=y*20,h),x.fillRect(960+C(n=t/5+P/3*(y/4|0))*300+C(m=P/4*y+t)*200,540+S(n)*300+S(m)*200,4,4)

Aug 9 2019 6:24 PM UTC

}// 135/140

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Golfed and colorized for more visual interest.

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katkip

function u(t) {

t||(k=0);for(j=2000;j--;){i=parseInt(k.toString(2).split``.reverse().join``,2);x.fillRect(k%1920,1080-i%1080,1,1),k++}

Aug 8 2019 3:01 PM UTC

}// 118/140

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reverse binary sequence graph #math #binary

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robbyg

function u(t) {

P=Math.PI*2
for(z=3;z--;)for(y=4;y--;)x.fillRect(960+C(n=P/3*z+t/5)*300+C(m=P/4*y+t)*200,540+S(n)*300+S(m)*200,4,4)

Aug 9 2019 1:00 PM UTC

}// 115/140

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Visualizing the paths of the cars on a ride at the local amusement park. 🎠

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KilledByAPixel

function u(t) {

eval(unescape(escape`𩡯𬠨𨰮𭱩𩁴𪁼👪🐱𝠻𪠭𛐻𚑦𫱲𚁂👪𚠮𜰹𛁁🐰𛁘🐹𝠰𚰹𞐪𠰨𠠩𛁙🐵𝀰𚰹𞐪𤰨𠠩𛁩🐹𞐻𪐭𛐻𮀮𩡩𫁬𤡥𨱴𚁘𚰽𠰨𠐫𠠩𚠴𛁙𚰽𤰨𠐫𠠩𚠴𛁚🐶𞐪𚁩𛰵𜀰𚐬𦠩𚑱👓𚁴𚠲𛑂𚐭𜐬𠐫👱𚠨𛠰𜀱𝐭𠐯𜠸𚐬𮀮𩡩𫁬𤱴𮑬𩐽𤠨𛑱𚠱𜰹𛐨𪐯𞐹𚐪𚠲𚠹𞐬𪐩`.replace(/u../g,'')))

Aug 6 2019 6:38 PM UTC

}// 140/140

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#beesandbombs demake 🐝&💣

u/KilledByAPixel

https://twitter.com/beesandbombs/status/1158…

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hypothete

function u(t) {

w=c.width=c.width;j=200;r=Math.random;x.font=j+'px s';n=r()*20+30|0;m=0;while(m<n){x.fillText('🐗',r()*(w-j),j+r()*(c.height-j));m++;}

Aug 6 2019 11:28 PM UTC

}// 133/140

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30-50 feral hogs