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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baon

remix of d/28892 by u/baon

function u(t) {

if (t>0) return
for(i=0;i<256;i++) for(j=0;j<256;j++)
a = (i^j)%9 ,x.fillStyle=R(a,a,a,a), x.fillRect(i*4+450, j*4, 4, 4)

Nov 22 2023 10:27 AM UTC

}// 121/140

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baon

remix of d/28890 by u/baon

function u(t) {

if (t>0) return
for(i=0;i<256;i++) for(j=0;j<256;j++)
a = (i*j)&64 ,x.fillStyle=R(a,a,a), x.fillRect(i*4, j*4, 4, 4)

Nov 22 2023 10:24 AM UTC

}// 116/140

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baon

function u(t) {

if (t>0) return
for(i=0;i<256;i++)
for(j=0;j<256;j++)
a = i ^ j ,
x.fillStyle=R(a,a,a),
x.fillRect(i*4, j*4, 4, 4)

Nov 22 2023 10:20 AM UTC

}// 114/140

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384.cz

function u(t) {

t||(G='')
onclick=_=>{K=_.x
G+=r(0)+r(4)+r(0)+`
`}
Z=K
r=_=>"cat,dog,ant,fox,met,had,killed,kissed".split`,`[0|_+2+(Z=S(2*Z)*2)]+" "
throw G

Nov 21 2023 7:27 PM UTC

}// 140/140

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Click different place on canvase - Generate different #poem verse

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rodrigo.siqueira

remix of d/28860 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(a=b=t,i=8e4;i--;b-=b/5+C(a*2.5)*2,a+=(i/b&i%2)*3-b*S(a*2)/8-a*a/4.3)x.fillRect(b*390+1e3,a*2e3+b*40-300,.1,t<1)

Nov 19 2023 5:35 PM UTC

}// 140/140

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Multifern fractal #plant #fern

u/DataMeta

very nice
u/lionleaf

Amazing!

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mistrqwerty

remix of d/28838 by u/384.cz

function u(t) {

for(l=localStorage,onclick=i=>+l.B?l.B++:l.B=1,c.width=99,i=0;l.B>i;i++)x[f="fillText"](":)",50+50*S(i+3*t),9),x[f](":|",6*i%54,9*(0|2+i/9))

Nov 21 2023 10:10 PM UTC

}// 140/140

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Turn your head sideways

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Xen

remix of d/28883 by u/Odog8

function u(t) {

t?e+=[-1,c.width=S,1,-S,d+=(a[e]^=1)?1:3][d%4]:a=Array(d=e=S=19)
for(i in a)x.fillRect(i%S,i/S,1,a[i])

Nov 21 2023 5:50 PM UTC

}// 102/140

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2 bytes less Vs lower quality

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baon

remix of d/28913 by u/baon

function u(t) {

c.width=512
for(i=0;i<128;i++) for(j=0;j<72;j++) a = C(i^j+i**2+j**0.3+60*t)<0.5,
x.fillStyle=R(0,0,0,1-a),x.fillRect(i*4,j*4,4,4)

Nov 22 2023 2:17 PM UTC

}// 130/140

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baon

remix of d/28910 by u/baon

function u(t) {

if (t>0) return
for(i=0;i<256;i++) for(j=0;j<256;j++) a = C(i^j)<0.5,
x.fillStyle=R(0,0,0,1-a),x.fillRect(i*4+450,j*4,4,4)

Nov 22 2023 2:02 PM UTC

}// 122/140

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baon

remix of d/9561 by u/f8f82804

function u(t) {

p =a=> 255*0.5*( 1+C(a) )
x.fillStyle=R( p(t), p(t-2), p(t+2) )
x.fillRect(0,0,2e3,2e3)

Nov 22 2023 1:55 PM UTC

}// 87/140

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colorful