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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keithclark

function u(t) {

for(x.fillRect(0,0,j=2e3,j);j--;x.clearRect(C(j)*r+960,S(j*j)*r+540,2/Z,2/Z))r=600/(Z=1+(T(j*.61)-t/3)%1)

Dec 6 2018 5:33 PM UTC

}// 105/140

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u/katkip

#starfield #stars #d3

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Xen

remix of d/11344 by u/katkip

function u(t) {

x.fillStyle=`hsl(${t*1e3} 99%50%)`;x.fillRect(960+S(t)*900,540+C(t)*500,1,1);x.drawImage(c,9,9,1902+S(t*9)*4,1062+C(t*9)*4);

Dec 8 2018 5:59 PM UTC

}// 124/140

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Void Of Happiness

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katkip

function u(t) {

t*=.2;x.fillRect(0,0,2e3,2e3);for(i=99;i--;)x.clearRect(960+S(t+i*i)*960,540+C(t+i*i+(t+i)/9)*540,S(t*99+i)*9,C(t*99+i)*9);x.globalAlpha=.1

Dec 6 2018 12:29 PM UTC

}// 139/140

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They can't find it. Sorry #nsfw joke

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katkip

function u(t) {

t||(x.translate(960,540));x.font='17em"';x.fillText('🎄',-140*t,t*140);x.drawImage(c,0,0,1920-t*100,1080-t*100);x.rotate(3.14-C(t)/60)

Dec 10 2018 2:15 PM UTC

}// 133/140

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Merry !("valentines"||"easter")&<'exception: existence of Christmas'>[file: *]

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username

remix of d/11353 by u/username

function u(t) {

eval(unescape(escape`睩瑨⡸⥩昨琥㈼⸱⥻堽孝㭙㵛崬挮睩摴栭㵑㵗㴰㭦潲⡩㴱㜻椭ⴻ塛楝㵺⠩⨱㤱ㄩ奛楝㵺⠩⨹㤹㭦潲⡰⁩渠堩儫㵘孰崬圫㵙孰崬晩汬剥捴⡘孰崬奛灝ⰹⰹ⤻浯癥呯⠰ⰰ⤻汩湥呯⡑⼵ⱗ⼵⤻獴牯步⠩絺㵍慴栮牡湤潭`.replace(/u(..)/g,"$1%")))

Dec 8 2018 11:52 PM UTC

}// 140/140

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linear regression

u/katkip

Nice! Now the variation is finnaly visible

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pavel

function u(t) {

for(c.width|=i=64,x.scale(16,16);i--;)x.fillRect(X=i%8*8+30,Y=i&-8,X+Y&8,i+64-"@JDN_nu{q`Q".charCodeAt(t%12|0)?8:x.fillText('♞',X-1,Y+8))

Dec 6 2018 7:41 AM UTC

}// 138/140

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Knight's Tour v0 #chess

u/donbright

nice work

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jylikangas

function u(t) {

t?onmousemove=e=>X=e.x:X=99
F=a=>x.fillRect(i-a*X,a*50,a/5,h>0?0:h)
for(c.width=512,i=2e3,h=k=0;i--;F(!F(3)),F(5))h+=k=i*i%15<1?S(i**4):k

Dec 5 2018 7:36 AM UTC

}// 137/140

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Parallax Mountains #interactive - use mouse

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katkip

function u(t) {

t||(z='');c.width=500;x.font='3em"';x.fillText("cars be like:",0,40);
x.fillText(z.repeat(t),0-t**3,170)
z+=[..."vrumbm"][6*Math.random()|0]

Dec 6 2018 1:00 PM UTC

}// 140/140

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#meme

u/donbright

lol. this is great, reminds me of the old Woody Gurhtie kid's song about riding in cars.

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katkip

function u(t) {

t||(c.width=400);x.fillRect(200+S(t)*100,110+C(t)*100,T(t*2)*100,1);x.fillRect(130,70,20,20);x.fillRect(250,70,20,20)

Dec 6 2018 1:16 PM UTC

}// 117/140

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Samurai

u/katkip

That kind of #genius

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username

remix of d/11351 by u/katkip

function u(t) {

eval(unescape(escape`睩瑨⡸⥩昨琥㈼⸱⥻堽孝㭙㵛崬挮睩摴栭㵑㵗㴰㭦潲⡩㴴㈻椭ⴻ塛楝㵺⠩⨱㤱ㄩ奛楝㵺⠩⨹㤹㭦潲⡰⁩渠堩儫㵘孰崬圫㵙孰崬晩汬剥捴⡘孰崬奛灝ⰹⰹ⤻浯癥呯⠰ⰰ⤻汩湥呯⡑⼵ⱗ⼵⤻獴牯步⠩絺㵍慴栮牡湤潭`.replace(/u(..)/g,"$1%")))

Dec 8 2018 11:49 PM UTC

}// 140/140

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linear regression