Dweets awesomed by u/BriSeven

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: #Opposites

show FPS hide FPS share 2 remixes fullscreen

tomxor

remix of d/17936 by u/tomxor

function u(t) {

for(c.width=128,i=1e4;i--;)x.fillRect(i&127,i>>7,1,(i**3>>6)/(6+t/1e6)&1)

Mar 13 2020 2:20 AM UTC

}// 73/140

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

u/joeytwiddle

Eternal battle between the black ants and the white ants
u/DataMeta

!!

show FPS hide FPS share 1 remix fullscreen

tomxor

function u(t) {

for(c.width=128,t/=2,i=1e4;i--;)x.fillRect(i&127,i>>7,1,(i**3>>t)/(6+t**2/1e7)&1)

Mar 13 2020 2:12 AM UTC

}// 81/140

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

BriSeven

remix of d/17920 by u/BriSeven

function u(t) {

s=255,S=64;d=5e2/S
for(i=0;i<S;i++)for(j=0;j<S;j++)c=C(i/d/2)*C(j/d+C(j/5+t)),x.fillStyle=R(b=-(c*S+6)*s,-b,-b),x.fillRect(i*d,j*d,d,d)

Mar 13 2020 1:33 AM UTC

}// 135/140

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

lava lamp behind the scenes.

u/BriSeven

from here you can modify i*d and j*d to make whatever bulb shape you want.

show FPS hide FPS share fullscreen

tomxor

function u(t) {

t>1&&eval('U='+parent[c.style=9*u.r|reset()].u);U(t);if(t%1>.8)for(c.width=128,i=1e4;i--;)x.fillRect(i&127,0|i/120-t*4,1,u.r=Math.random())

Mar 13 2020 1:15 AM UTC

}// 139/140

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

Dwitter Vision

Show more comments…
u/Xen

love the idea
u/DaSpider

ReferenceError: U is not defined
u/KilledByAPixel

how is this possible?
u/tomxor

All loaded iframes are enumerated on the window object (for any webpage), the value is the window object of the corresponding frame... and from inside a dweet this can be accessed (with restrictions) by going to the parent frame, then you have access to any globals in that other frame. While you can't call a function since it's in a different JS context, you can read it's source and re-evaluate it.
u/tomxor

essentually window.parent[n].u is the function created by dwitter for dweet n on the page, if you add it to a string it calls toString which returns the source, you can eval this and assign it to something to run in this context.
u/tomxor

I think I am the most verbose person here sorry :/
u/jellyedwards

Wow that's amazing!
u/jellyedwards

Very nice presentation of that little trick
u/katkip

nice trickery. #exploit #trick #hack
u/sigveseb

Woah

show FPS hide FPS share fullscreen

KilledByAPixel

function u(t) {

eval(unescape(escape`𭱩𭁨𚁸𚑦𪑬𫁓𭁹𫁥👒𚁴𚠽𜠷𞐬𜠵𝐬𜠵𝐩𛁦𪑬𫁒𩑣𭀨𜀬𭀪𝀬𜡥𜰬𭀼𝀷𝀿𞐹𞠭𜱥𜰩𛁬𪑮𩑗𪑤𭁨🐱𞀬𬱴𬡯𪱥𤡥𨱴𚀹𛀹𛀱𞐰𜠬𜐰𝠲𚐬𭀼𝀴𝠿𫁩𫡥𥁯𚀹𝠰𚰨𬠽𞐶𜀫𠰨𭀪𚠳𚐪𜐹𞐩𚡓𚁴𛰽𝠷𚐬𝐴𜀭𠰨𭀩𚠨𬠭𝀸𜀩𛁳𭁲𫱫𩐨𚐩𞡣𫁩𬀨𚐻`.replace(/u../g,'')))

Mar 12 2020 6:47 AM UTC

}// 137/140

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

Broken Pane of #Glass

u/katkip

good idea
u/Qwitter

(Contest) ? golf a suitable "POW" in there : have a nice day;

show FPS hide FPS share 1 remix fullscreen

BriSeven

function u(t) {

eval(unescape(escape`挮睩摴株㴱ⱳ㴲㔵ⱓ㴴〻景爨椽〻椼医椫⬩景爨樽〻樼医樫⬩挽䌨椯ㄱ⭃⡴⼷⤩⩃⡪⼵⭃⠨樭琩⼵⭴⤩ⱸ⹦楬汓瑹汥㵒⠳〪椬猭挪猬猭挪猩ⱸ⹦楬汒散琨⵩⨨㌪䌨樯㐫㌩⬴⤫䌨樯㐫㌩⨶〫ㅥ㌬横匫猬匬匩`.replace(/u(..)/g,"$1%")))

Mar 12 2020 6:28 AM UTC

}// 137/140

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

lava lamp #glass

show FPS hide FPS share 2 remixes fullscreen

BriSeven

remix of d/2351 by u/nonce

function u(t) {

c.width=600
x.font='9em a'
x.fillText(['🥃','🥛','🍷','🍸','🍹','🍺'][(_=~~(t/2))%6],620-(t*512&1023),250)
c.style.filter=`hue-rotate(${_*10}deg`

Mar 11 2020 5:54 AM UTC

}// 139/140

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

#glass

show FPS hide FPS share 1 remix fullscreen

smtsjhr

function u(t) {

c.width=1920,n=20;d=50;for(i=20;i<n*n;i++){k=i%n+1;j=(i-k)/n;s=.3*(j*k+n*n)+20+100*S(t/10);x.fillRect(480+d*j,d*k,d*S(s+t),d*C(s+t))}

Mar 11 2020 5:33 AM UTC

}// 133/140

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

u/Xen

Love It

show FPS hide FPS share fullscreen

BriSeven

remix of d/17897 by u/BriSeven

function u(t) {

x.save()
x.font='30cm A'
x.translate(A=1e3,A/2)
x.rotate(t*999)
x.fillText(t|0,0,A*S(t))
x.fillStyle="#AAF4"
x.fillRect(0,0,A,A)
x.restore()

Mar 11 2020 4:40 AM UTC

}// 140/140

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

Variation B

show FPS hide FPS share 1 remix fullscreen

BriSeven

remix of d/17896 by u/BriSeven

function u(t) {

x.save()
x.font='9cm A'
x.translate(A=1e3,A/2)
x.rotate(t*t)
x.fillText(t|0,0,99*S(t))
x.fillStyle="#FAA4"
x.fillRect(0,0,A,A)
x.restore()

Mar 11 2020 4:19 AM UTC

}// 138/140

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

Variation A

dwitter.net | BriSeven (5912)