Dweets by u/magna

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

Please log in (or register) to post a dweet (copy-paste the code somewhere safe to save it meanwhile)


    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

show FPS hide FPS share fullscreen

magna

remix of d/10833 by u/magna

function u(t) {

t||(a=Array(w=1920).fill(0))
x.drawImage(c,0,0,w,w-9,0,1,w,w)
for(i=w;i--;x.fillRect(i,0,1,1))x.fillStyle=`hsl(${a[i]+=C(T(i/w)+t)},99%,50%`

Nov 4 2018 5:23 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share 1 remix fullscreen

magna

remix of d/10832 by u/magna

function u(t) {

t||(a=Array(w=1920).fill(0))
x.drawImage(c,0,0,w,w,0,1,w,w)
for(i=w;i--;x.fillRect(i,0,1,1))x.fillStyle=`hsl(${a[i]+=C(S(i/w)+t)},99%,50%`

Nov 4 2018 5:20 PM UTC

}// 138/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share 2 remixes fullscreen

magna

function u(t) {

t||(a=Array(w=1920).fill(0))
x.drawImage(c,0,0,w,w,0,1,w,w)
for(i=w;i--;x.fillRect(i,0,1,1))x.fillStyle=`hsl(${a[i]+=Math.random()},99%,50%`

Nov 4 2018 5:11 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

u/yonatan

x.drawImage(c,0,1) for(i=2e3;i--;x.fillRect(i,0,1,1))u[i]=u[i]||0,x.fillStyle=hsl(${u[i]+=Math.random()},99%,50%

show FPS hide FPS share 2 remixes fullscreen

magna

remix of d/7512 by u/magna

function u(t) {

c.width=960
for(j=60;j--;)for(i=240;i--;x.fillRect(i*4,j*9,4,9))f=i+t*60,n=T(0|(j+f^f-j)/(t/2+6)),x.fillStyle=`hsl(${120*i},99%,${n*9%50}%`

Nov 4 2018 5:42 AM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

u/tomxor

Hah, it fits! awesome
u/tomxor

#crt #fractal
u/magna

It's monochrome, unfortunately. I couldn't find a quick way to add color (i.e. adjust the intensity based on R/G/B cells.)
u/tomxor

I can sort of fudge the colour with some kind of mod3 to selectively modulate the intensity in lum: (2+i%3)*n*10%50 duno how to fit it though.
u/magna

Nice! I used the dweet compressor (d/9207) to compress it: d/10843

show FPS hide FPS share 1 remix fullscreen

magna

function u(t) {

x.fillRect(0,0,w=c.width=960,w)
x.strokeStyle=R(w,w,w,.2)
for(i=399;i--;x.stroke())x.arc(480+i,270-i,(i/29)**S(t)*119,~x.beginPath(),7)

Nov 3 2018 10:16 PM UTC

}// 135/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

show FPS hide FPS share fullscreen

magna

remix of d/10765 by u/yonatan

function u(t) {

for(i=c.width=99;i--;)for(j=56;j--;x[p='fillRect'](i,j,(S(j*j+i/j-t*7)+C(j**5-i/j*6+t)**3)*j/99,1))i%11||x[p](20+i/2+S(t)*15,20+j,3,1/j)

Oct 30 2018 5:16 PM UTC

}// 137/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

That sinking feeling. #default

u/iverjo

Nice
u/aleamb

lol! superb!!!
u/lionleaf

Amazing
u/lionleaf

#water
u/Qwitter

submersive

show FPS hide FPS share fullscreen

magna

function u(t) {

c.width=1e3
x.font='5em"'
x.scale(3,1)
x.fillText('👻',99,99)
x.putImageData(new ImageData(x.getImageData(0,0,3e3,1e3).data,1e3,3e3),0,0)

Oct 22 2018 1:45 PM UTC

}// 136/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Proof of concept of skipping scan lines by swapping w/h while transferring pixels

show FPS hide FPS share fullscreen

magna

remix of d/7191 by u/magna

function u(t) {

s=[]
for(p in x)s.push(p)
T.valueOf=Math.random
f=x[s[T*s.length|0]]
try{f.call&&f.apply(x,[T,T,T,T,T,T,T,T,T].slice(0,f.length))}catch(e){}

Oct 18 2018 6:21 PM UTC

}// 140/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

Brute-force dweet

u/magna

Open in new tab and refresh to see random stuff
u/tomxor

I love the concept :D, it's a shame the results are so small. Maybe worth randomising the scale of some params beyond 1 also?

show FPS hide FPS share fullscreen

magna

remix of d/10316 by u/Purpzie

function u(t) {

with(x)for(i=288;i-=9;beginPath(r=Math.random,arc(r()*500+750,r()*500+300,i*S(t)*C(t)+i,0,9),fill()))fillStyle=`hsla(${t*99+i},99%,50%,.01`

Oct 12 2018 5:49 AM UTC

}// 139/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

u/joeytwiddle

Is this nuclear fusion? Or some kind of plasma?

show FPS hide FPS share fullscreen

magna

remix of d/10320 by u/veubeke

function u(t) {

c.width^=0
for(i=190;i--;x.fillRect(-90,-30,180,60))x.setTransform(k=C(a=(S(t)/2+i%2*.5)*Math.PI),z=S(a),-z,k,120*(i/11|0),i%11*120)

Oct 12 2018 4:54 AM UTC

}// 132/140

Please log in (or register) to post as a new dweet (copy-paste code somewhere safe to save it meanwhile).

u/yonatan

124 with some constant-folding and pi approximation: c.width^=0;for(i=190;i--;x.fillRect(-90,-30,180,60))x.setTransform(k=C(a=(S(t)+i%2)*1.57),z=S(a),-z,k,120*(i/11|0),i%11*120)

dwitter.net | magna (4021)