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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Jezza

remix of d/13451 by u/rodrigo.siqueira

function u(t) {

t||x.translate(960,540);if(t<6){
x.globalAlpha=.1
x.fillRect(-1,-540,2,1080)
x.rotate(Math.PI/2)
x.drawImage(c,0,0,1080,540)
}

Apr 26 2019 3:45 AM UTC

}// 126/140

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#dragoncurve

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Jezza

function u(t) {

t||(X=Y=u=.9)
for(i=999;i--;)T=.4-6/(1+X*X+Y*Y),Z=X,X=1+u*(Z*C(T)-Y*S(T)),Y=u*(Z*S(T)+Y*C(T)),x.fillRect(X*500+600,Y*350+750,.9,.9)

Apr 26 2019 7:31 AM UTC

}// 132/140

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https://en.wikipedia.org/wiki/Ikeda_map

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username

remix of d/13488 by u/pavel

function u(t) {

for(x.fillRect(0,0,i=640,i);z=--i**.3;x.fillStyle=R(0,500/--z))x.setTransform(s=20/z,0,0,s,0,0),x.fillText('undefined'[i%9],i%z*99,t++%z*60)

Apr 26 2019 10:07 PM UTC

}// 140/140

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LimeLaser

function u(t) {

r=Math.random
u=r()*32|0
v=r()*18|0
d=[0,2,3,1][(u%2)+2*(v%2)]/2-1
x.fillStyle=R(51*(u/5+d|0),51*(v/3+d|0))
x.fillRect(60*u,60*v,60,60)

Apr 28 2019 2:39 AM UTC

}// 135/140

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Ordered Dithering Of Red-Green Gradient

u/LimeLaser

Simulates a 6-bit-per-channel color scheme. The "d" variable represents an entry in a Bayer matrix; setting d=0 will show non-dithered 6-bit-per-channel gradient.

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KilledByAPixel

function u(t) {

for(c.width|=X=i=0;i++<2e2;x.font="5em'",x.fillText((z=i%4)?'🌼':'🐝',z?2e3*S(i):915+905*X,z?1e3*S(i*i):555+485*Y))Y=X,X=S(X+S(i)*(1e9+t/2))

Apr 26 2019 1:14 AM UTC

}// 138/140

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Busy bees with full color bees and flowers for firefox users! Don't let bees go extinct, support your local beekeeper!

u/joeytwiddle

#bees #flowers #animals

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mwigby

function u(t) {

c.width=1920
for(i=0;i<1920;i+=1){
x.fillStyle = R(i/8, 0, i/2)
x.fillRect(i,540 + T(t+i/19)*100/(T(t+i/2000)),30,30)
}

Apr 26 2019 3:16 PM UTC

}// 119/140

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my [f]irst dweet be nice

u/Xen

nice one, join the discord chat with everyone, theres a few small things you can do to get this one smaller
u/mwigby

whats the disc @xen

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jeff

function u(t) {

c.width|=0
for(i=2e3;i--;x.fillRect(C(i)*S(t)*800+800,C(i+t)*400+500,99,99))
x.fillStyle=`hsl(${i&999},99%,${(.95+S(i+t))**9+40}%)`

Apr 27 2019 10:57 PM UTC

}// 131/140

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Submission #3

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Xen

function u(t) {

x.translate(1920,0)
x.scale(-1,1)
x.fillRect(1e3+C(t)*599,500+S(t^1)*499,t,9)
x.drawImage(c,S(t),C(t*.3))
x.fillStyle=`hsl(${t*99},50%,50%)`

Apr 25 2019 10:12 PM UTC

}// 140/140

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inkblot

u/Xen

#inkblot #rainbow #trippy

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username

remix of d/13519 by u/username

function u(t) {

eval(unescape(escape`𪑦𚁴𚑴𪁲𫱷𨁠𒡸𛡦𫱮𭀽𚀤🐹𞐩𚱠𬁸𙱠𞱦𫱲𚁨🐤𞱨🁣𛡨𩑩𩱨𭀻𪀫🐤𚠳𚑦𫱲𚁷🐰𞱷🁣𛡷𪑤𭁨𛐵𞐹𞰩𫰽𨁬𫱷𛁂𛁧𫰬𡐬𨑮𩀬𡰬𬱡𮐬𡀬𭑳𩐬𬱥𩐬𪱮𫱷𛁨𫱷𛁰𬡯𨀮𬱰𫁩𭀨𨀬𨀩𦰨𣑡𭁨𛡲𨑮𩁯𫐨𚐪𜐳𚑞𜁝𛁸𛡦𪑬𫁔𩑸𭀨𫰬𭰬𪀩𛁷𚰽𫰮𫁥𫡧𭁨𚠤`.replace(/u../g,'')))

Apr 28 2019 3:51 PM UTC

}// 140/140

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poem generator v2

u/username

best one yet "go use 'say GG'. see how low, how pro, G go low. BD use how B how know: B low, G low and know ..."
u/username

generate new one by adding and removing space or going to d/13520

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GandalfUFR

function u(t) {

a=99;b=7;d=a-b;f=93*t;e=f*b/a;g=f*d/a
z=d*C(e)-b*5*C(g);y=d*S(e)+b*5*S(g)
for(i=0;i++<9;)x.fillRect(191*i+z,540+y,5,5);x.translate(8*S(f),0)

Apr 27 2019 2:36 PM UTC

}// 140/140

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Let's pixel it together ...

u/joeytwiddle

Sauron gave the Nine rings to powerful men. All of them fell under the rings' dominance, and they became the Nazgûl (Ringwraiths), spirits of terror whom Sauron could command.