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

robbyg

function u(t) {

for(c.width|=i=9;i--;)x.stroke(new Path2D(`M${560+i*100+S(t)*300} 440h50v200h-50z`))

Sep 6 2019 3:24 PM UTC

}// 84/140

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

Stroked #default using Path2D. Lots of room for activities.

u/robbyg

#path2d

show FPS hide FPS share fullscreen

mildlybean

function u(t) {

c.width+=0;for(i=99;i>-99;)x.fillRect(--i*9+960,535+S(t*i/20)*535,9,9)

Sep 6 2019 8:55 PM UTC

}// 70/140

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

Wait for it

u/mildlybean

Apparently this has been done many times before. oops

show FPS hide FPS share fullscreen

BriSeven

function u(t) {

for(let i=0,j=0,k=0,c=32;i<c;i++,j=i/c,k=255)
x.fillStyle=R(C(j+t)*k,S(j+t)*k,-S(j+t)*k),
x.fillRect(j*k*8+S(t*j*5)*k,k*2+C(t*j*5)*k*2,k,k)

Sep 6 2019 6:01 AM UTC

}// 139/140

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

Colour Tumble

show FPS hide FPS share fullscreen

atgz

remix of d/15574 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`睩瑨⡸⤡⡆偓ⴭⴶ〩㼨晩汬剥捴⠰ⰰⱔ㴷攳ⱔ⤩㩧汯扡汃潭灯獩瑥佰敲慴楯渽❳捲敥渧ⱦ潮琽∷㝥洧∬晩汬却祬攽恨獬⠤筴⨽命‹㤥㔰╠ⱴ㰳㘰㽦楬汔數琨≃桲潭慴楣∬琯㘬启㜬ㄸ㠰⤺〻`.replace(/u(..)/g,"$1%")))

Sep 6 2019 1:03 PM UTC

}// 130/140

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

with(x)!(FPS---60)?(fillRect(0,0,T=7e3,T)):globalCompositeOperation='screen',font="77em'",fillStyle=hsl(${t*=T} 99%50%,t<360?fillText("Chromatic",t/6,T/7,1880):0

u/atgz

golfed it to 156 chars but I don't think it is feasible to go down to 140 :P with(x)(S)?(fillRect(S=0,0,T=7e3,T)):globalCompositeOperation='screen',font="77em'",fillStyle=hsl(${t*=T} 99%50%,t<300?fillText("Chromatic",t/6,T/7,T/4):0

show FPS hide FPS share fullscreen

kkingsbe

function u(t) {

c.width=1920
var max = 3000;for(i=0;i<max;i++)x.fillRect(i*(c.width/max),S(t+(i/100*t))*c.height/2+c.height/2,10,10)

Sep 8 2019 2:12 AM UTC

}// 116/140

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

My take on a Sine pattern

show FPS hide FPS share fullscreen

kkingsbe

function u(t) {

c.width=1920
x.fillStyle="blue"
x.fill(x.arc(1000,(c.height/2)+Math.abs(S(t))*-50*(10-t),50,0,360))

Sep 8 2019 1:46 AM UTC

}// 99/140

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

Strange Bouncing Ball

show FPS hide FPS share fullscreen

katkip

function u(t) {

fs=0;
t||(X=Y=0);c.onmousemove=e=>{X=e.x/(Z=(fs?1:0.295)),Y=e.y/Z};x.beginPath(),x.fillStyle="#0002",x.arc(X,Y,10,0,7),x.fill();

Sep 5 2019 9:51 AM UTC

}// 128/140

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

Precise paint. If you want to use it on fullscreen, change fs to 1

u/katkip

^ edit: isn't precise when fs=1
u/Fime

On mobile, at least in opera touch there is always an offset in dweets which use mousemove

show FPS hide FPS share fullscreen

WasifBoomz

function u(t) {

x.lineWidth=5
a=350
x.strokeRect(0,0,a,a)
x.strokeRect(0,0,a*2,a*2)
x.ellipse(960,540,80,800,0,0,9)
x.stroke()
x.rotate(40)

Sep 5 2019 1:59 PM UTC

}// 124/140

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

u/taupelink

I like how this one turns out more ordered than it seems at first

show FPS hide FPS share fullscreen

django

function u(t) {

w=c.width*=1;w/=2;x.beginPath();x.lineWidth=3
for(i=0;i<1000;i++)
x.lineTo(w+0.9*w*(S(.1*2.5*i/10+t)),1.1*i+30*C(t+i/11))
x.stroke()

Sep 3 2019 4:16 AM UTC

}// 132/140

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

noodle

u/katkip

yummy
u/aleamb

nice!

show FPS hide FPS share 1 remix fullscreen

katkip

remix of d/15558 by u/katkip

function u(t) {

eval(unescape(escape`𪑦𚀡𭀩𮱘👙🐰𞱰👛𧐻𩡯𬠨𪐽𝐻𪐭𛐻𚑰𛡰𭑳𪀨𦰹𝠰𚱓𚁑🐶𛠲𞀯𝐪𪐩𚠴𜀰𛀵𝀰𚱃𚁑𚐪𝀰𜁝𚑽𞱦𫱲𚁩🐹𞐹𞱩𛐭𞰩𮀮𩡩𫁬𤡥𨱴𚁘𚠱𛠵𛁙𚠱𛠵𛀲𛀲𚐬𦀽𚁘𚱰𦰨𬠽𣑡𭁨𛡦𫁯𫱲𚁍𨑴𪀮𬡡𫡤𫱭𚀩𚠵𚐩𧑛𜁝𚐯𜠮𝐬𦐽𚁙𚱰𦱲𧑛𜑝𚐯𜠮𝐻`.replace(/u../g,'')))

Sep 3 2019 9:14 AM UTC

}// 136/140

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

if(!t){X=Y=0;p=[];for(i=5;i--;)p.push([960+S(Q=6.28/5*i)*400,540+C(Q)*400])};for(i=999;i--;)x.fillRect(X*1.5,Y*1.5,2,2),X=(X+p[(r=Math.floor(Math.random()*5))][0])/2.5,Y=(Y+p[r][1])/2.5 #chaosgame #fractal

u/rodrigo.siqueira

#uncompressed (139 characters): X=Y=730;p=[];for(i=5;i--;)p[i]=([X+X+X*S(i*5),X+C(i*5.03)*X]);for(i=X;i--;x.fillRect(X,Y,2,2))X=(X+p[r=~~(X*t%5)][0])/2.5,Y=(Y+p[r][1])/2.5
u/katkip

nice