Dweets awesomed by u/anotherkitten

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

pavel

function u(t) {

with(x)for(k=n=j=255;j--;k=2,fill())for(beginPath(fillStyle=R(T=(t^k)%2*128,T,i=4));i--;)arc((j%9-t%1)*n+T,(j>>4)*n+T,64*k,a=(i-t%1)*11/7,a)

Nov 13 2018 2:29 AM 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

arc?!
u/anotherkitten

oh you sly dog very well done
u/pavel

:)
u/jylikangas

Very cool! You can save 3 bytes by removing the unnecessary %1 from t when calculating a and also doing <<7 instead of *128. If someone is wondering how this works using a+1 instead of a at the end may help. :)
u/katkip

#beesandbombs
u/pavel

Removing %1 at the end breaks the animation on my iPhone.

show FPS hide FPS share 1 remix fullscreen

pavel

function u(t) {

for(d=t<8,n=i=256;i--;x.fillRect(d?9*i:855+n*i*(i<2),!d*300,50,d?4:50))x.fillStyle=R(C((t|Math.abs(i-107))**.5*t)<0&&n)
x.drawImage(c,0,d*4)

Nov 12 2018 3:19 AM UTC

}// 140/140

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

Demon

Show more comments…
u/magna

Amazing!
u/iverjo

Spot on!
u/katkip

nice idea
u/ndr3w221

this is awesome!
u/and3k5

i did not expect the last bit! scary!
u/aleamb

great! #waitforit
u/lionleaf

Amazing #demon

show FPS hide FPS share fullscreen

anotherkitten

function u(t) {

x.rotate(388),x.drawImage(c,0,0),x.fillRect(0,0,99,8)
if(!t||!~~(t%8+.9))c.width|=0,x.translate(960,540),x.filter="invert(2%)"

Nov 10 2018 1:56 AM UTC

}// 126/140

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

tornadoes

show FPS hide FPS share fullscreen

anotherkitten

function u(t) {

for(i=~~t*5;i--;x.fill(p=new Path2D(),p.arc(v%2e3,99*(t*5-i)-600,v%60+9,0,7)))v=(i+8)**3,x.fillStyle=`hsl(${v%360} 69% 50%`

Nov 10 2018 1:31 AM UTC

}// 123/140

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

i dont like this one

show FPS hide FPS share fullscreen

anotherkitten

function u(t) {

e=(a,b)=>a/b&1?b-a%b:a%b;x.fillRect(0,0,j=2e3,j);x.globalAlpha=.1;for(;j--;x.clearRect(e(t*360*S(b),1911),e(t*360*C(b),1071),9,9))b=j/1200

Nov 9 2018 6:36 PM UTC

}// 138/140

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

faster and cleaner version of linear ripple

u/katkip

I love this one!
u/iverjo

#waitforit

show FPS hide FPS share fullscreen

ellisk1

remix of d/10896 by u/ellisk1

function u(t) {

with(x)for(j=1e3;j--;fill(arc(2e3*C(a+t/j*99),1e3*S(a/2+t),j*(C(j+t)+2)/9,0,7)))fillStyle=`hsl(${a=j*j} 69%30%`,beginPath(globalAlpha=.01)

Nov 9 2018 3:19 AM UTC

}// 138/140

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

u/anotherkitten

aurora borealis? at this time of day?
u/DataMeta

Smooth

show FPS hide FPS share fullscreen

anotherkitten

function u(t) {

t||(j=y=960,k=z=540);
for(i=k;i--;){r=Math.random()*3
if(r<1)y/=2,z/=2
else if(r>2)y/=2,z=z/2+j
else y=y/2+k,z=z/2+480
x.fillRect(z,y,1,1)}

Nov 4 2018 7:36 PM UTC

}// 140/140

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

chaotic sierpinski

show FPS hide FPS share 1 remix fullscreen

anotherkitten

function u(t) {

t||x.translate(960,540)
with(x)fillStyle=`hsl(${t*7e3} 70% 50%`,fillRect(0,0,S(t)*500,C(t)*500),rotate(t/1e4),drawImage(c,-960,-540)

Nov 4 2018 7:13 PM UTC

}// 132/140

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

big epilepsy warning!

u/Xen

I LOVE IT!!!!!!
u/ndr3w221

insane

show FPS hide FPS share 1 remix fullscreen

rodrigo.siqueira

remix of d/10786 by u/pavel

function u(t) {

for(c.width|=i=128;i--;)
for(j=64;j--;)
s=150*T((i&j)-t/3),
x.fillRect(300+10*i-t/2,9*j-s/2,9,9)

Nov 4 2018 6:49 PM UTC

}// 96/140

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

Sierpinski rain

u/anotherkitten

some stay dry and others feel the pain
u/erin

sierpinski rin
u/erin

...rain

show FPS hide FPS share fullscreen

tomxor

function u(t) {

c.width=w=120
for(i=w*33;i--;x.fillRect(i%w,i/w*2,1,2))f=i%w+t*60,n=T(0|(i/w+f^f-i/w)/(t**.7+6)),x.fillStyle=R((n&1)*i/n/8,n**n,(n&3)*i/n/4)

Nov 3 2018 5:53 PM UTC

}// 140/140

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

#retro #fractal #game

Show more comments…
u/tomxor

For the lazy game designer... Just add chip tunes and a player :D
u/tomxor

#crt #degauss #sidescroller
u/magna

Awesome!
u/magna

I had a RGB CRT setup, but I hadn't been able to fit any interesting patterns: d/7512
u/tomxor

I had a look at yours magna, they are true crt, much more realistic i think. The scan lines on this are just a sideeffect I exploited and it was easy to add colour distortion in the R().
u/magna

Here we go: d/10843
u/C010011012

is it a cellular automata?
u/tomxor

Yes and no, it's a fractal n=T(0|(i/w+f^f-i/w)/(t**.7+6)) which is just a more elaborate variation of serpinsky triangles to produce more interesting patterns. Some fractals are automata, but not all automata are fractals, see here: https://en.wikipedia.org/wiki/Rule_90
u/tomxor

The implication is serpinsky triangles are computationally reducable, meaning it does not have to be computed in the same way as a cellular automata i.e state can be computed at step t directly without traversing intermidiate steps.

dwitter.net | anotherkitten (7581)