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

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    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

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iznax

function u(t) {

with(x)for(fillRect(0,t**2,w=c.width|=j=m=512,w);j--;stroke())beginPath(strokeStyle="#0af2"),arc(960+S(t/3)*m,540+C(t)*99,S(1.57*j/m)*m,0,7)

Mar 7 2020 8:03 PM UTC

}// 140/140

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Crystal Ball #glass

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rodrigo.siqueira

remix of d/17743 by u/rodrigo.siqueira

function u(t) {

for(c.width|=Z=0;Z<27;Z++)for(X=-3;X<=3;X+=.02)
Y=Math.exp(-X*X)*S(S(X-t*4)*3+Z/7+C(Z/4+t))-1,
x.fillRect((X+4)*260-Z*9,Z*26-Y*150,5,4)

Mar 6 2020 1:33 AM UTC

}// 135/140

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Waving surface #wavelet #d3 #wireframe

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username

remix of d/17833 by u/iznax

function u(t) {

eval(unescape(escape`挮睩摴桼㴰㭷楴栨砩景湴㵠㔰敭❠ⱦ楬汔數琨却物湧⹦牯浃潤敐潩湴⠱㈷㜶ㄫ⡴⨱⸲㜳⬴簰⤥㠩ⰴ㤰ⰸ㈰⤬獣慬攨⸲Ⱞ㈩ⱦ楬汔數琨䌨琩㰭⸹㽠怺恜畻ㅦ㌱敽怬㐴〰ⵓ⡴⤪㑥㌬㍥㌩ⱳ捡汥⠵ⰵ⤻`.replace(/u(..)/g,"$1%")))

Mar 6 2020 10:47 AM UTC

}// 133/140

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sun's shining; been a while

u/username

#randomremix no 40

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tomxor

remix of d/17835 by u/pavel

function u(t) {

eval(unescape(escape`𫱮𫑯𭑳𩑭𫱶𩐽𩐽🡦𚁸𛡬𪑮𩑗𪑤𭁨🐴𛀴𛁣𛡷𪑤𭁨👩𫡮𩑲𥱩𩁴𪀬𤠽𩐩𒡦🐨𦀬𦐬𭰩🐾𚁒𛡸𛑘𛑷𛰲𚐪𚠲𚰨𤠮𮐭𦐭𭰯𜠩𚠪𜠼𭰪𭰪𝠮𜠸𚰳𩐴🱷🠶𙠦𩠨𦀬𦐬𭰯🐲𚑼𩠨𦀫𭰬𦐬𭰩𯁦𚁘𛁙𚱷𛁷𚑼𩠨𦀫𭰬𦐫𭰬𭰩𞡸𛡳𭁲𫱫𩑒𩑣𭀨𦀬𦐬𭰬𭰩`.replace(/u../g,'')))

Mar 5 2020 2:17 AM UTC

}// 135/140

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#interactive #quadtree (move your mouse)

u/tomxor

Note the intersection is fuzzy since full circle-AABB takes too much code, instead it's just circle-point + current subdivision width based radius (w*w*6.28), i.e it becomes more accurate as it converges.
u/tomxor

This is why there are a bunch of divisions around it that would not exist with an exact test. Pavel's doesn't do this by cleverly choosing a geometry that only need intersect the top left of each square.
u/katkip

Nice!

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KilledByAPixel

function u(t) {

with(x)for(r=m=>C(++h)*m,t||fillRect(0,0,i=h=2e3,h),translate(w=960,540);i-->0;clearRect((z=i%19)*i,a=r(z?89:-1),r(z?4:w),-2*a))rotate(r(h))

Mar 4 2020 6:29 PM UTC

}// 140/140

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Cracked #Glass 🔨+🖥️

u/katkip

Nice idea
u/DataMeta

Cool!

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Odog8

function u(t) {

c.width|=c.style.filter=`blur(9px)contrast(9e9`,x.scale(80,99);for(i=9;i--;x.fillText('.',3*S(2*i+t)+9,3*C(i+t/2)+6))x.fillStyle=R(20,40,70)

Mar 6 2020 10:45 PM UTC

}// 140/140

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hacky Metaballs

u/katkip

i wanted to create the same thing :D

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BriSeven

remix of d/17850 by u/Unum

function u(t) {

eval(unescape(escape`挮睩摴株㴱㭰㴳⸱㭸⹳捡汥⠹〬㤰⤻景爨椽㔻椭ⴻ吽琥ㄵ⵰⩩⥸⹦楬汓瑹汥㵒⠰ⰰⰰⰨ吪吾㤿〺⡃⡔⤫ㄩ⼲⤩ⱸ⹦楬汔數琨≥汬潈≛楝ⰶⰹ⤻挮獴祬攮晩汴敲㵠扬畲⠤笭䌨琪㈩⨱ぽ灸⥣潮瑲慳琨㉥㌥⥠`.replace(/u(..)/g,"$1%")))

Mar 6 2020 1:37 AM UTC

}// 136/140

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morphing text. I comprimised on the precision of some constants, so some of the timing will go out of sync after a few runs.

u/katkip

nice

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New_Core

function u(t) {

for(c.width|=i=640;i--;x.stroke())x.beginPath(),x.strokeStyle=`hsl(${i},99%,50%)`,x.arc(99*S(t-i/9)+i*3,i%160*8-99,a=99**C(i/14+t)+14,a,0,7)

Mar 3 2020 6:14 PM UTC

}// 140/140

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u/katkip

looks good!
u/aleamb

amazing!

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Unum

remix of d/17835 by u/pavel

function u(t) {

c.width|=f=(X,Y,w)=>X*X+Y*Y<=2e6*S(t/9)?w>9&&f(X,Y,w/=2)|f(X+w,Y-w,w)|f(X-w,Y+w,w)|f(X+w,Y+w,w):x.strokeRect(X,Y,w,w);f(x.lineWidth=4,4,999)

Mar 5 2020 7:17 PM UTC

}// 140/140

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Random

u/katkip

this looks like a broken quadtree ;)
u/katkip

this looks like a broken quadtree ;)

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katkip

function u(t) {

eval(unescape(escape`𭁼𯀨𥀽𦱝𚐻𮀮𩡩𫁬𤱴𮑬𩐽𙰣𜁦𩠵𙰻𮀮𩡩𫁬𤡥𨱴𚀰𛀵𝀰𛀲𩐳𛀲𩐳𚐻𮀮𩡩𫁬𤱴𮑬𩐽𤠨𚐻𩡯𬠨𪐠𫱦𘁔𚑸𛡦𪑬𫁒𩑣𭀨𪐮𮀫👃𚁩𛡡𚐪𞐬𪐮𮐫👓𚁩𛡡𚰽𚁩𛡹𛐵𝀰𚐪𚠲🀱𙠦𪐮𭀥𜠼𜐿𜐮𝐷𞠰𚐪𞐬𞐬𞐩𞱔𛡰𭑳𪀨𮱸𞠱𜰸𜀬𮐺𞐰𛁡𞠭𝀬𭀺𭀪𞐹𯐩`.replace(/uD./g,'')))

Mar 5 2020 7:01 AM UTC

}// 139/140

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#glass reflection and refraction #compressed

u/elochimsiemasz

👃
u/katkip

nose?