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

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

wgetch

function u(t) {

for(s=20,j=s*5,i=5e3;i--;f=Y*T(Y+t)/C(X-t),x.fillStyle=`hsla(${S(f/1e5-t/j)*360},75%,${s+C((f+t)/i)*s}%`)x.fillRect(X=i%j*s,Y=~~(i/j)*s,s,s)

Feb 2 2021 3:03 AM UTC

}// 140/140

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

ｆｉｅｌｄ＿ｐｒｏｇｒａｍｍａｂｌｅ＿ｇａｔｅ＿ａｒｒａｙ

u/Xen

Welcome to the dwitter family!

show FPS hide FPS share fullscreen

ciaccodavide

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),
x.rotate(S(2*t+i*.8)/9)

Feb 2 2021 2:18 PM UTC

}// 116/140

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

drunk #default with two sober guardians

u/andrea270872

looks like a Newton's cradle! Cool.

show FPS hide FPS share 1 remix fullscreen

KilledByAPixel

function u(t) {

for(c.width|=i=1024;--i;x.fillRect(944+X*r,556+Y*r,r*=S(Math.atan2(X,Y)+(X*X+Y*Y)**.5-t*2),r,x.fillStyle=R(r*8)))r=32,X=16-i%r,Y=512-i>>5

Feb 1 2021 1:09 AM UTC

}// 137/140

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

#beesandbombs

u/Xen

nice!

show FPS hide FPS share fullscreen

ciaccodavide

remix of d/21587 by u/ciaccodavide

function u(t) {

x.lineTo(950,530,20,20,x.lineTo(p+960,q+540,x.stroke()),p+=v,q+=w,f=99/(p*p+q*q),v-=p*f,w-=q*f)}p=200
q=v=0
w=14
{

Feb 3 2021 6:33 PM UTC

}// 114/140

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

atom petals

show FPS hide FPS share 2 remixes fullscreen

ciaccodavide

remix of d/21576 by u/BackendForth

function u(t) {

x.fillRect(950,530,20,20,x.lineTo(p+960,q+540,x.stroke()),p+=v,q+=w,f=99/(p*p+q*q),v-=p*f,w-=q*f)}p=200
q=v=0
w=14
{

Feb 3 2021 6:32 PM UTC

}// 116/140

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

atom golfed remix with lineTo refactor

show FPS hide FPS share fullscreen

cantelope

function u(t) {

eval(unescape(escape`𡰽𚁘𛁙𛁳𛁭𚐽🡻𭱩𭁨𚁸𚑧𫁯𨡡𫁁𫁰𪁡🐮𜠬𨡥𩱩𫡐𨑴𪀨𨑲𨰨𦀬𦐬𬰬𜀬𝰩𛁬𪑮𩑗𪑤𭁨👳𛰳𛁳𭁲𫱫𩐨𚐬𫐫𚰩𞱦𫱲𚁬𩑴𘁩👱🐲𚱴𙐷𯀰𞱩𛐭𙠦𬰾𬐪𞐻𚑇𚁘𚱓𚁰🐶𛠲𛱱𚡩𚱴𚠨𜠭𫐥𜠪𝀩𚐪𬰬𦐫𠰨𬀩𚡳𛁳𛰲𛁭𚑽𞱇𚀹𝠰𛀵𝀰𛀲𝐰𛁣𛡷𪑤𭁨𯀽𜀩`.replace(/u../g,'')))

Feb 1 2021 1:02 AM UTC

}// 140/140

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

relevant https://codegolf.dweet.net/a/553

u/cantelope

also https://code.whitehotrobot.com/d/2w86
u/cantelope

(temp mirror for above link) https://code.dweet.net/d/2w86

show FPS hide FPS share fullscreen

taupelink

remix of d/21529 by u/taupelink

function u(t) {

for(i=511;i>>=1;x.fillRect(96*X,80*Y,g=i/t,g))f=i*t,X=f*f%29-9,Y=X*f%23-9,h=C((q=C(Y&i)*X)&(p=C(X&i)*4*Y))*20,x.fillStyle=R(h%q*h,h%p*h,h*h)

Feb 3 2021 2:46 PM UTC

}// 140/140

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

d/21583

show FPS hide FPS share fullscreen

ciaccodavide

remix of d/21562 by u/ciaccodavide

function u(t) {

c.width|=1
f=(X,Y,s)=>(h=s/2,x.rotate(T(t)/3e3),x.fillRect(X-h,Y-h,s,s),s>3&&(f(X-s,Y-s,h,f(X+s,Y+s,h,f(X+s,Y-s,h)))))
f(960,540,123)

Feb 2 2021 2:25 PM UTC

}// 133/140

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

slipper #sierpinski

show FPS hide FPS share fullscreen

rodrigo.siqueira

function u(t) {

for(i=2e3;i--;x.fillRect(i,t*240,h/=9,4)){I=i/430,Y=t/8-1,h=X=.5
for(n=9;n--;X*=Y*I*(1-X)*(1-I*X*(1-X)))h+=Math.log2((Y*I*(1-1.5*X))**2)}

Feb 1 2021 6:51 PM UTC

}// 137/140

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

Lyapunov #Fractal - "A Lyapunov fractal is constructed by mapping the regions of stability and chaotic behaviour (measured using the Lyapunov exponent)." They said it couldn't be done but yet here it is.

u/rodrigo.siqueira

#lyapunov

show FPS hide FPS share fullscreen

jellyedwards

function u(t) {

x.fillRect(960+S(t/=2)*400+R*t,580+C(t)*400+Math.abs(R=T(t)),9*R,9*S(t)/R)

Feb 1 2021 11:04 PM UTC

}// 74/140

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

Poor man's raytraced sphere