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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E-Mouse

remix of d/8390 by u/E-Mouse

function u(t) {

for(c.width|=i=2e3;i--;)x.fillRect(S(t*3+i/15)*i+960,C(t*2+i/15)*i+540,W=i/25,W)

Jun 4 2018 1:37 PM UTC

}// 80/140

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Which way is it spinning? #illusion

u/katkip

Both

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BirdsTweetCodersDweet

function u(t) {

c.width|=i=1e3
for(;i--;x.fillStyle=`hsl(${i%360},50%,${i/20+50}%)`)x.fillRect(i*2,S(t+i*1.5)*100+500,9,9)

Jun 3 2018 11:16 AM UTC

}// 106/140

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Twisting off into the abyss...

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sawaxon

remix of d/8227 by u/sawaxon

function u(t) {

c.width|=0;for(j=0;j<99;j++)for(i=0;i<8;i++){x.fillStyle=`hsl(${i*40},99%,50%)`
x.fillRect(j*9,400+i*50+S(j/40+t*3)*99,900,50);x.rotate(1)}

May 31 2018 12:10 AM UTC

}// 140/140

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joeytwiddle

function u(t) {

for(c.width|=k=511;k--;x.fillRect(960-W-500*S(j/41)*C(a),960-j*(i+S(a)),2*W,9))i=k>>5,j=k%32,x.fillStyle='#f7f'+j/5,W=99*S(j/10)*S(a=t+i*17)

May 29 2018 10:12 AM UTC

}// 140/140

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Happy Vesak! https://en.wikipedia.org/wiki/Vesak

u/joeytwiddle

Here is the colourful 3d version: https://codegolf.tk/a/270
u/fujimotos

Lotus!
u/hollo47

This is absolutely beautiful!
u/lionleaf

Amazing! #vesak #flower
u/aleamb

great!!

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DataMeta

function u(t) {

p=Math.PI;j=(t*1920)/p;r=Math.random();m=Math.random();x.fillStyle=R(T(t)*192,96/m,96/r,.9);x.fillRect(-j%1920+1680,j%1080-8,250,64)

Jun 2 2018 4:56 AM UTC

}// 132/140

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Show more comments…
u/uchenna

i have been trying to implement this on my project please help me, thanks
u/DataMeta

You're more than welcome to mess around with this code. What exactly do you want help with?
u/sukkamehu

a bit golfed version.. p=3.14;j=(t*1920)/p;z=Math.random;r=z();m=z();x.fillStyle=R(T(t)*192,96/m,96/r,.9);x.fillRect(-j%1920+1680,j%1080-8,250,64)
u/DataMeta

Thanks! I was meaning to check how to declare functions in javascript... Although I find that at least 3.146 is needed to closely replicate pi, so ill usually take the 3 extra chars
u/sukkamehu

ok nice dweet though
u/DataMeta

appreciate it
u/DataMeta

I wonder is there's a tag for fps graph glitch-outs.
u/DataMeta

#fpsgraphglitch (yes this is silly)
u/DataMeta

#glitch

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DataMeta

remix of d/8327 by u/DataMeta

function u(t) {

for(i=128;i>0;i--){r=Math.random();m=Math.random();x.fillStyle=R(i/m-96,i/m+64,i/r,.4);x.fillRect(i*16,620+T(i+t/m)*64*S(t),T(t),T(i)*208)}

Jun 1 2018 12:18 AM UTC

}// 139/140

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#glitch

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DataMeta

remix of d/8327 by u/DataMeta

function u(t) {

for(i=128;i>0;i--){r=Math.random();m=Math.random();x.fillStyle=R(255*r,i/m,i/r,.4);x.fillRect(180+i*12,620+T(i+t)*S(t)/2,T(t/r),T(i)*56)}

Jun 1 2018 12:17 AM UTC

}// 137/140

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u/uchenna

i have been trying to implement this on my project please help me, thanks
u/DataMeta

#glitch
u/DataMeta

#colorshock

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Xen

remix of d/8336 by u/sawaxon

function u(t) {

x.beginPath(x.fillStyle=`hsla(${t*99},49%,50%,.1)`);x.arc(999+S(t)*400,500+C(t)*400,99+C(t/4)*49,0,7);x.fill(),x.stroke()

Jun 1 2018 5:53 PM UTC

}// 121/140

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Loading Test

u/sukkamehu

i think it look much better without the stroke()

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Xen

remix of d/8300 by u/pythech

function u(t) {

with(x)for(Z=i=49;--i;)for(j=9;--j;fill(arc(i*99+T(t*C(t))*9,99*j-T(i-t)*Z,Z,0,9)),stroke())beginPath(fillStyle=`hsla(${t*i*j},65%,50%,.1)`)

May 29 2018 6:16 PM UTC

}// 140/140

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u/katkip

#xweet

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Agnes

function u(t) {

with(x)for(l=1600;l--;T=l%100)F=t+25*S(l+t/T),fillStyle=R(q=1e4/T,l/(h=T+T/12),q,.01),beginPath(fill()),arc(960+T*F*C(h),540+T*F*S(h),T,0,7)

May 29 2018 10:40 AM UTC

}// 140/140

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I was trying to make a lotus flower thing but it turned into a 90s tie-dye pattern instead.

u/magna

Nice!