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 1 remix fullscreen

LimeLaser

function u(t) {

r=Math.random
with(x){
fillStyle=R(255*r(),255*r())
fillRect(1e3*r(),0,8,8)
save()
translate(960,540)
rotate(t)
drawImage(c,0,0)
restore()}

Jun 2 2019 7:28 AM UTC

}// 139/140

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

Cool Spinning Glitch

u/LimeLaser

I'm not really sure why it does this, but I got this effect while trying to rotate and draw the canvas onto itself.
u/katkip

its because drawimage

show FPS hide FPS share fullscreen

MAxSaL

function u(t) {

k=400+T(t)*9;for(c.width^=200,x[l='fillStyle'],x[r='fillRect'](0,0,2e3,2e3),i=9;i--;x[r](500+i*99+S(t)*300+S(t*99)*5,k,50,200%k))x[l]='#6F1'

Jun 3 2019 8:06 PM UTC

}// 140/140

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

Extra glitch

u/MAxSaL

Remix of https://www.dwitter.net/d/14379
u/Xen

#glutch

show FPS hide FPS share 1 remix fullscreen

metamero

function u(t) {

throw eval((!''+u)[-''])

Jun 3 2019 6:57 PM UTC

}// 24/140

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

u/Xen

stop throwing evil! lol

show FPS hide FPS share fullscreen

Tesseract

remix of d/8221 by u/Tesseract

function u(t) {

t||(p='m 912 400',d=a=0)
g=y=>y&3^1?~y&1:g(y/4)
x.lineWidth=3
a+=((d&1)-2)*g(d++/2)+1
x.stroke(new Path2D(p+=["h-9","v9","h9","v-9"][a&=3]))

Jun 1 2019 4:36 AM UTC

}// 140/140

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

Space filling curve

u/Xen

love it

show FPS hide FPS share fullscreen

Xen

function u(t) {

x.globalCompositeOperation='xor'
x.fillRect(700+C(t+S(t/3))*499,240+S(t+C(t/3))*499,499,499)
x.rotate(C(t)/3e3)

Jun 4 2019 6:12 PM UTC

}// 111/140

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

quick play

show FPS hide FPS share 1 remix fullscreen

katkip

function u(t) {

throw`\u{1242A}`.repeat(6+C(t*9)*5)

Jun 3 2019 5:57 PM UTC

}// 35/140

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

Waffle maker

u/Xen

Has Wafflez??

show FPS hide FPS share 1 remix fullscreen

KilledByAPixel

function u(t) {

c.width|=0;x.font="9em'";code.split('').map((v,i,a)=>x.fillText(v,2e3+(i*139-t*2300)%17000,570+400*S(t+i*.155)))//☮♥☻␌

Jun 2 2019 5:13 PM UTC

}// 119/140

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

Sine Wave #Quine

u/KilledByAPixel

This quine appeared in my dream last night, felt good to see it in the real world.
u/katkip

I tried to read it and now i see wierd.

show FPS hide FPS share fullscreen

katkip

function u(t) {

eval(unescape(escape`𪐽𚁘𛁙𛁒𚐽🡻𮀮𨡥𩱩𫡐𨑴𪀨𚐬𮀮𩡩𫁬𤱴𮑬𩐽𨁨𬱬𚀤𮱒𚠹𩐳𯐬𝰹𙐬𝀵𙐩𨀬𮀮𩡩𫁬𚁸𛡥𫁬𪑰𬱥𚁘𛁙𛀷𜀫𤠪𜠬𜰰𚱒𚠹𛁒𚱴𚠴𛀰𛀳𚱓𚁴𚐪𜰩𚑽𞱦𫱲𚁪🐹𞐻𪠭𛐻𚑩𚀹𝠰𚱃𚁪𚐪𪠪𞐬𝐴𜀫𤰨𪠩𚡪𚠹𛁪𚠱𛠰𝰩`.replace(/uD./g,'')))

Jun 1 2019 9:33 PM UTC

}// 126/140

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

#compressed #psychedelic #trippy #infinite #color #loop

u/Xen

oooo like

show FPS hide FPS share 1 remix fullscreen

taupelink

function u(t) {

t?(a=f(n++),N<1e999?c=N/D:0,[N,M,D,E]=[a*N+M,N,a*D+E,D]):(c=n=M=D=0,N=E=1,f=X=>[1,2*X/3|0,1][X%3])
throw c

Jun 3 2019 12:43 AM UTC

}// 106/140

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

Continued fraction approximation of e. Replace the formula for f to generate other continued fractions. #math

u/taupelink

Hat-tip to users robbyg for d/14305 and pavel for d/14331...Dunno whether what I have here ought to have been a remix. :)

show FPS hide FPS share 1 remix fullscreen

username

remix of d/3685 by u/New_Core

function u(t) {

for(x.fillRect(0,0,i=b=2e3,q=1080-t);i--;x.fillRect(a*i%b+a/3*S(t*i/a/3),(i/5*t+i*50)%b%q,5,5))x.fillStyle=R(a=i*9%255,a*S(t),C(t)*a)

Jun 2 2019 11:04 AM UTC

}// 133/140

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

#randomremix nr. 2 - snow with food coloring, watch how the color of the snow remains on the ground