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: #Opposites

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Coalshork

function u(t) {

r=t&9?4:9,x.fillRect(S(t*r)*100+S(t)*300+960,C(t*r)*100+C(t)*300+540,10,10)

Nov 14 2024 3:00 PM UTC

}// 75/140

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Ternary Spirograph #waitforit

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zadgy5534

function u(t) {

c.width|=0
for(i=w=1e3;i--;x.fillStyle=R(i/w,t-w,i%w))
x.fillRect(960+i*C(i%t),i*S(i/w%t)-t,8,12)

Nov 14 2024 3:48 AM UTC

}// 97/140

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A hillside

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SockTaters

remix of d/32617 by u/tomxor

function u(t) {

for(c.width&=i=10368;--i;)x.fillRect(i&127,i>>7,1,S(i**2.0000004+t))

Nov 12 2024 1:19 PM UTC

}// 68/140

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Twisting Strands or Mountains?

u/Coalshork

this would be an awesome noise for terrain gen!

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KilledByAPixel

remix of d/32740 by u/DaSpider

function u(t) {

for(i=192;i--;)x.fillText([...'🟩⬜🟥'][i>>6],i*10,t*600)

Nov 12 2024 4:55 PM UTC

}// 54/140

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Viva L'Italia! 🍕

u/fentbiggesthater

very cool i love mexico!

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DaSpider

remix of d/32731 by u/SockTaters

function u(t) {

$=a=>a.repeat(47),x.fillText($('🔵')+$('⚪')+$('🔴'),0,t*720)

Nov 12 2024 2:31 AM UTC

}// 58/140

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🇫🇷

u/lewdev

Interesting concept. Using emoji to color stuff will save a lot of text.

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KilledByAPixel

function u(t) {

eval(unescape(escape`󭽩󭍨󚍸󚝦󫽲󚍢󟜹󝼲󞽢󛜭󞽢󩝧󪝮󤍡󭍨󚍦󪝬󫌨󨝲󨼨󪜪󞌳󚼴󜌫󡬨󤼩󛍴󚬵󩜳󛜴󜌫󡬨󠼩󛍴󟼲󜌺󜝥󝌬󜌬󞜩󚜩󚝩󟝢󟬾󜬬󪼽󨬥󝌬󩭩󫍬󤽴󮝬󩜽󭌿󪼿󪼾󜜿󤬨󚜺󙼣󩭦󩬧󞬧󘼲󜭦󙼺󙼣󝭢󜌧󛍆󟝦󟜾󚍫󟬱󟼭󝬺󝬪󪼩󚭦󚍩󛼲󚽴󚬳󜌩`.replace(/u../g,'')))

Nov 11 2024 1:46 PM UTC

}// 127/140

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Illusory Motion Illusion ⚪🔵⚫

u/magna

DAMN
u/cantelope

🤮
u/joeytwiddle

#illusion #opticalillusion

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rodrigo.siqueira

remix of d/32712 by u/rodrigo.siqueira

function u(t) {

c.style.filter=`invert(`
for(a=b=t,i=4e4;i--;a+=(r=i*b&1)*3-S(b)/3-a*a/4.3,b=b/1.5-C(a*3)/2+S(r)/3)x.fillRect(1e3-b*610,a*1400+70,.1,t<3)

Nov 11 2024 4:04 PM UTC

}// 137/140

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White leaves #plant

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vchoulga

function u(t) {

c.width=1920;for(i=5e3;i--;)s=1/(2100-(i+t*30)%2081),q=9e4*s*s,x.fillRect(960+2e4*s*C(i*273+t)-q/2,540+2e4*s*C(i*95+t)-q/10,q,q)

Nov 12 2024 8:47 PM UTC

}// 129/140

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u/fentbiggesthater

woah very trippy!

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vchoulga

function u(t) {

for(i=c.width|=2e3;i--;c.style.filter=`invert(${Math.sin(t)*50+50}%)`)x.fillRect(960+(j=t+i)*Math.cos(t+j/2),540+j*Math.sin(j/3),s=i/69,s)

Nov 12 2024 6:49 PM UTC

}// 140/140

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u/fentbiggesthater

stolen, math.sin has a built in shortcut, stolen, unoriginal, stolen, impressive, ive seen this somewhere before, maybe stolen?

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0x61

remix of d/32737 by u/0x61

function u(t) {

c.width*=1;for(i=32400;i--;)Math.random()>.4&&x.fillRect(i%240*8,8*(0|i/240),8,8)

Nov 12 2024 12:17 PM UTC

}// 81/140

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Cut a few more chars while still using Math.random() #static

u/fentbiggesthater

not showing anything, might be broken?
u/0x61

Shows in Firefox, Chromium and Safari for me. Which browser?