Random dweets | Dwitter

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

hscells

remix of d/2557 by u/hscells

function u(t) {

w=c.width=1920
for(s=32,i=s;i<w-s;i+=s)for(j=s;j<w/2;j+=s)x.fillStyle=`hsla(${S(j/5)*s+196},90%,60%,1`,x.fillRect(i+s*C(j),j+s*C(j+i+t),s,s)

Apr 23 2017 3:44 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/joeytwiddle

#waves #water #sea #ocean

show FPS hide FPS share fullscreen

tem

function u(t) {

for(i=c.width|=2e3;i--;)x.fillStyle=R(k=i/8,k,k),x.fillRect(1e3+(j=i*1.023)*S(j)/2,540+j*C(t+j|0)/2,s=i/19,s)

May 5 2025 1:29 PM UTC

}// 109/140

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

main view effect

show FPS hide FPS share fullscreen

Xen

remix of d/26793 by u/taupelink

function u(t) {

for(g=A=>x.fillRect(...A),g([0,540,i=Z=2e3,2]);i--;g([i,540-320*f((i-960)/320),2,2]))f=(x,n=64)=>Math.abs(n?f(x,n>>1):x)-1/(n+1)

Jan 9 2023 11:20 PM UTC

}// 128/140

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

slight golf so it fits, not sure if useful

show FPS hide FPS share 1 remix fullscreen

tomxor

function u(t) {

c.width=99;x.fillRect(X+=a=S(X/30)<0?-a:a,Y+=b=Y>52?-b:b+.3,4,4)}{X=b=Y=a=1

Oct 26 2019 2:20 PM UTC

}// 75/140

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

75byte #physics

u/tomxor

Perfect collision integration, since uniform gravity is constant it should cancel out in such a simple case, in which case integration can be skipped on a collision interval ?-b:b+.3 this is why it doesn't loose or gain significant hight on average
u/tomxor

To make it absolutely perfect this can also be changed to ?-b:b+.25 which will eliminate integration error since .25 is a non periodic binary fraction... it will bounce forever :)
u/tomxor

... but that would cost an extra byte so its no good !

show FPS hide FPS share fullscreen

Yale

remix of d/25886 by u/rodrigo.siqueira

function u(t) {

for(w=m=c.width|=0;m--;)q=m/w*6,X=S(p=m*m)*q,Z=C(p*8)*q,d=(t+X*X+Z*Z)**17,Z=8,x.fillRect(960+800*X/Z,500+500*(C(d+t*9)-S(t*2+d+q/4))/Z,8,8)

Jul 28 2022 9:51 PM UTC

}// 139/140

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

Hadron Collider

show FPS hide FPS share 1 remix fullscreen

pavel

function u(t) {

for(c.width=120,k=4072;j=--k>>6;x.fillRect(60+i,j,1,1))i=k%64-32,s=64*j-i*i-j*j,f=s**.5*S(a=S(3*t))+i*C(a),x.fillStyle=R(g=f*f/4,g,g+f,s/99)

Mar 3 2019 3:17 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/aleamb

#shading
u/13thptr

#sphere

show FPS hide FPS share 1 remix fullscreen

kian

remix of d/5643 by u/sandromiccoli

function u(t) {

for(i=0;i<44*(t%9);i++){x.fillStyle=R(0,0,0,0.045);s=t%4.735*100;x.fillRect(960+S(t/10+i)*(C(t)*s),540+C(t/4+i)*s,5,5)
}

Mar 12 2021 5:38 PM UTC

}// 120/140

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

10 2 4

show FPS hide FPS share fullscreen

initramfs

remix of d/4220 by u/Xen

function u(t) {

(s=>{for(;a<1.5e3;a+=s)for(b=1;b<=1e3;b+=s)x.fillRect(a,b,s*C(b+t),s*S(a+t),x.fillStyle=`hsla(${(a+b)*S(t)},1000%,50%,20)`)})(a=75+C(t))

May 31 2021 4:04 PM UTC

}// 136/140

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

Agnes

function u(t) {

c.width|=q=t<10;f=t?q?(f/Math.random())%9e3:f:1;x.font=512*(q?t/10:1)+'px A';x.fillStyle='#'+!q*~~f;x.fillText(q?"🥚":"🐖",660+t*q*f%5,740)

Mar 28 2018 12:35 PM UTC

}// 137/140

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

What colour is your easter pig?

u/Agnes

(Sometimes you don't get an easter pig and sometimes the pig is a ghost, but I think that improves the dweet and I don't have the characters to fix either bug)
u/chokezonhorsey

haha.. i love it :))
u/BirdsTweetCodersDweet

Apparently c.width|=q=t<10;f=t?q?(f/Math.random())%9e3:f:1;x.font=512*(q?t/10:1)+'px A';x.fillStyle='#'+!q*~~f;x.fillText("🐖",660+t*q*f%5,740) fixes the ghost pig on mine :P

show FPS hide FPS share 2 remixes fullscreen

KilledByAPixel

function u(t) {

for(j=9;j--;)for(i=150;i--;x.fillRect(...j<8?[0,460+i+S(j+t)*460,2e3,2]:[0,0,2e3,2e3]))x.fillStyle=`hsl(${j*45} 99%${i<75?i:150-i}%`

Aug 19 2025 2:23 PM UTC

}// 132/140

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

Raster Bars 🖥️ https://en.wikipedia.org/wiki/Raster_bar