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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someoneX

function u(t) {

background(124,45,56);
//shape
fill(173,236,255);
noStroke();
arc(34,56,90,60,45,78);

Nov 7 2017 7:37 PM UTC

}// 86/140

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Xen

remix of d/1201 by u/bligglenuber

function u(t) {

x.fillStyle=`hsl(${(t*=5e2)/2},80%,50%)`
x.globalCompositeOperation='difference'
x.fillRect(t%1920,t%1080,9,9)
x.drawImage(c,0,9)

Nov 3 2017 8:09 PM UTC

}// 129/140

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it's raining rainbow sierpinski triangles!

u/zanella

I just did https://www.dwitter.net/d/4677, but yours kicked the hell out of mine. :D
u/Xen

thank you :-)
u/f8f82804

#rainbow #fractal

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cantelope

function u(t) {

x.fillRect(0,0,w,w),P.map(v=>{v.p*=v.x<1?-2:.98,x.clearRect(v.x+=v.p--,v.y,20,9)})};{P=Array(w=2e3).fill``.map((v,i)=>v={x:i%w,y:i*9%w,p:0})

Nov 4 2017 6:12 AM UTC

}// 140/140

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mmastrac

remix of d/3451 by u/mmastrac

function u(t) {

f=e=>300*Math.asin(C(t*e))+480;for(e=c.width|=onmousemove=e=>A=e.y/innerHeight*1e3;e--;)x.fillRect([f(5),0,944][e]*2,e^1?f(3):A,32,e?256:30)

Nov 2 2017 10:07 PM UTC

}// 140/140

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Move the mouse over the canvas to start!

u/magna

Fix for the "A is not defined" error: Use an existing var like T instead of A: https://www.dwitter.net/d/3455
u/Cloud

Cool! :D

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New_Core

remix of d/3447 by u/cantelope

function u(t) {

c.width|=0
for(i=18;i--;)x.arc(960+(e=260+i%2*50)*C(d=t+i/.96+i%2*5.2),540+e*S(d),250-+i%2*53,0,7),x.closePath()
x.fill("evenodd")

Nov 2 2017 6:12 PM UTC

}// 130/140

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tried to duplicate the original with arc but derailed a bit and ended with this. =)

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Xen

function u(t) {

for(i=299;i--;)x.fillRect(i*9,499+(t*C(i/7)|(t/=-1))*9,9,9)

Nov 2 2017 11:08 PM UTC

}// 59/140

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NEW YORK HARBOR

u/alien

Wow what the !!!!!

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p01

remix of d/3446 by u/ETHproductions

function u(t) {

c.width|=onkeydown=e=>(e=e.which-36)>0&&e<5?e&1?X+=e-2:Y+=e-3:0;x.fillRect(X*9,Y*9,60,60)};{X=Y=70

Nov 2 2017 11:57 AM UTC

}// 98/140

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Move the square with the arrow keys. You have 42 bytes to write your game around this template

u/BalintCsala

3 bytes less: https://www.dwitter.net/d/6755

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magna

remix of d/3453 by u/mmastrac

function u(t) {

f=e=>300*Math.asin(C(t*e))+480;for(e=c.width|=onmousemove=e=>T=e.y/innerHeight*1e3;e--;)x.fillRect([f(5),0,944][e]*2,e^1?f(3):T,32,e?256:30)

Nov 2 2017 10:54 PM UTC

}// 140/140

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#pong

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cantelope

function u(t) {

for(x.fillRect(0,0,i=v=(w=250)*9,v);i--;x.clearRect(960+S(i)*w+S(q)*290,540+C(i)*w+C(q)*290,s,s))s=28+C(i-(q=2.1*(i/750|0)+S(t/2)*4)+3.1)*28

Nov 2 2017 6:15 AM UTC

}// 140/140

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mmastrac

remix of d/3443 by u/joeytwiddle

function u(t) {

for(x.font='2cm a',X=z=960;X--;x.fillRect(X&1?z+X:z-X,U=360+99*S(((X/35-2)**2)**.3),2,z-U-X/2-99*(S(X/80)**2)**.5))x.fillText("👀",z-34,555)

Nov 1 2017 5:17 PM UTC

}// 139/140

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Sorry @joeytwiddle... I had to

u/joeytwiddle

I look forward to trying it on a unicode-supporting environment! :)
u/joeytwiddle

LOL cute :D