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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philipkd

function u(t) {

c.width=1920
for(i=-40;i<40;i++) {
rx=900+i*30+(S(t)+3)*10*i
ry=400+S(.018*(rx-100))*500
x.fillRect(rx,ry,15,100+S(t)*i*40)
}

Aug 3 2019 4:26 AM UTC

}// 125/140

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Standard Deviations

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KilledByAPixel

remix of d/15203 by u/KilledByAPixel

function u(t) {

eval(unescape(escape`睩瑨⡸⥦潲⡦楬汒散琨〬〬椽䘽挮睩摴栽㔰〬䘩㭩ⴭ㭳桡摯睂汵爽㈹⥣汥慲剥捴⠨匨椩⨱改⵴⩩⼹⤥䘬椪㤥䘬ㄬㄩⱳ桡摯睃潬潲㵦楬汓瑹汥㵒⡆ⰲ㔵⵩⨳⤬慲挨㈵〬ㄴ〬㤹ⱱ㵓⡩⭴⼴攳⤪ㅥ㌬焩Ⱪ┹㥼籦楬氨⤻`.replace(/u(..)/g,"$1%")))

Jul 30 2019 8:18 PM UTC

}// 140/140

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☼ Sun Spots ☼

Show more comments…
u/katkip

Wow
u/aleamb

amazing!
u/aleamb

#universe #sun #landscape #shading
u/artfarnaa

#glow #contrast #unusual
u/magna

Wow!
u/Qwitter

perfect

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Soleam

function u(t) {

w=1920,h=13
c.width=w
for(i=1;i<9;i++){
x.fillStyle=R(0,19,4,0.1)
for(j=0;j<w;j++){f=h*i
x.fillRect(j,0,4,f*(9+S(j/f+10*t)+(j/4%h)/(2*h)))}}

Aug 2 2019 9:18 AM UTC

}// 140/140

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u/13thptr

Welcome to Dwitter. 126: h=13;c.width=w=1920;for(i=8;i--;){x.fillStyle=R(0,19,4,.1);for(j=w;j--;)f=h*i,x.fillRect(j,0,4,f*(9+S(j/f+10*t)+(j/4%h)/2/h))}

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username

remix of d/15231 by u/username

function u(t) {

eval(unescape(escape`砮晩汬剥捴⠰ⱸ⹧汯扡汁汰桡㴮㌬圽ㄹ㈰ⱈ㴱〸〩㭡㴶㔵㌷㭌㵢㴷㔻䄽㈵㔻景爨椽圻椭ⴻ砮捬敡牒散琨堫圯㈬夫䠯㈬焽䴪㠬焩⥁㵁⩢╡ⱌ㵌⩢╡ⱍ㴵⨨琯㄰⬨䰯愩⤥ㄬ堽䌨䄩⩍⩗⼲ⱙ㵓⡁⤪䴪䠯㈻`.replace(/u(..)/g,"$1%")))

Aug 1 2019 9:19 PM UTC

}// 134/140

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optical illusion refined

u/username

try looking around the edge, looks like it's shrinking
u/KilledByAPixel

👍

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taupelink

function u(t) {

for(i=1e3,d=e=0,q=6.3;i--;)x.fillRect(960+(p=d*270)*C(o=e*q),540+p*S(o),1,1),d+=((r=Math.random()*3|0)-d+e*S(d*q))/2,e+=(r%2-e-d*S(e*q)/2)/2

Aug 3 2019 1:57 AM UTC

}// 140/140

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Crescents

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taupelink

function u(t) {

for(i=1e3,d=e=0;i--;)x.fillRect(d*1200-200,e*1500,1,1),d+=((r=Math.random()*3|0)-d+e*S(d*6.28))/3,e+=("101"[r]-e-d*e-d**4*e**7/9)/5

Aug 3 2019 1:26 AM UTC

}// 131/140

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d/15251

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rep_movsd

function u(t) {

eval(unescape(escape`𨰮𭱩𩁴𪀽𥰽𜐹𜠰𛁈🐱𜀸𜀊𨰮𬱴𮑬𩐮𩡩𫁴𩑲🐧𪑮𭡥𬡴𚀱𚐧𒡡🐶𝐵𜰷𛁢🐷𝐬𠐽𜠵𝐬𣀽𞐵𒡦𫱲𚁩👗𞱩𛐭𞰩𒡻𠐽𠐪𨠥𨐊𣀽𣀪𨠥𨐊𣐽𝐪𚀨𭀯𜐰𚰨𣀯𨐩𚐥𜐩𒡘👃𚁁𚐪𣐪𥰯𜠊𦐽𤰨𠐩𚡍𚡈𛰲𒡸𛡦𪑬𫁒𩑣𭀨𦀫𥰯𜠬𦐫𢀯𜠬𣐪𞀬𣐪𞀩𯐻`.replace(/u../g,'')))

Aug 1 2019 11:21 AM UTC

}// 135/140

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Warp speed

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katkip

function u(t) {

if(!t){q=[];for(i=99;i--;)q.push({x:960,y:540,a:i*i})};for(i=19;i--;)for(z of q)x.fillRect(z.x,z.y,1,1),z.x+=C(z.a),z.y+=S(z.a),z.a+=t/99

Aug 2 2019 8:16 PM UTC

}// 137/140

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#flower

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KilledByAPixel

remix of d/15191 by u/KilledByAPixel

function u(t) {

(t*=60)?x.fillRect(t%19,t/19|0,("񥕕񥕕񥚥񥥕񥟪񦵅𵟤𕰁𒏤𑠀𐯹񑙀񠛾񥖐򥚿򹠪󰚯򺤏􈊯󺡇􎚫􊤂􏩪􊮕󏹙􎮪򿹚󏮩񯾦񫾕򫿪𐮠򻶺𐏨򻰟𐎪􉰂򐎩󍐁󴋿򿵕󎮾򿺪򿿮򿿪򿿿󏿾􋿻􏿿󏿾􏿿􏿿􏿿򻿿􏿿򺾑􏿿𺩐􏿿񫵑򻯿񫵕򺯿񵪕".charCodeAt(t/5)>>t%5*2&3)/3,1):c.width=60

Jul 29 2019 10:50 PM UTC

}// 140/140

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The Mona Dweetsa

u/KilledByAPixel

19x34 #PixelArt Mona Lisa with 4 shades of grey stored as an astral unicode string plus code to unpack and render.
u/magna

GG WP
u/KilledByAPixel

#monalisa

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katkip

remix of d/15261 by u/katkip

function u(t) {

c.width*=1;x.font='12cm"';x.fillText("🌴",680,940);for(j=5;j--;)for(i=3;i--;)x.drawImage(c,510+C(i*3.14/2+t)*200,50+i*80,900,600)

Aug 3 2019 8:25 AM UTC

}// 128/140

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Another #tree