Dweets awesomed by u/iverjo

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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dwardu

function u(t) {

r=n=>(Math.random()*n|0)*96
x.drawImage(c,r(19),r(10),192,192,r(20),r(11),w=96,w)
x.fillStyle=R(z=r(2)**2,z,z)
x.fillRect(r(20*9),r(11),w,w)

Mar 1 2018 8:03 PM UTC

}// 140/140

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Splits 1920px×1056px canvas into 20×11 grid of 96px×96px tiles. Once every 9 frames fills a random tile black or white. Every frame picks a random 2×2 group of tiles and draws it onto a random 1×1 tile at ½ the size.

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jylikangas

function u(t) {

for(c.width=250,t*=Y=w=69;Y--;x[f](-w+Y*7-S(t/w)*w,0,7,50+S(Y^w)*9))x[f='fillRect'](w-w/(z=Y)+S((v=Y+t)/w)*z*3,w+w/z,v&4?350/z:0,S(v/9)*3)

Mar 1 2018 9:50 AM UTC

}// 138/140

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OutRun :)

Show more comments…
u/sigveseb

Yeeees!
u/joeytwiddle

Whoa nice :D
u/Renaud___

wow
u/zanella

Just the road and the skyline effects alone are awesome. Dwitter is getting more and more awesome. :)
u/artfarnaa

thanks Jyklikangas. Your dwits are very motivating.
u/TheGreatRambler

Really nice!
u/aleamb

#road

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dwardu

function u(t) {

x.drawImage(c,0,0,1920,1080,16,32*Math.random(),w=1888,h=1048)
x.strokeStyle=R(z=255*S(t)**2,z,z)
x.lineWidth=32
x.strokeRect(16,16,w,h)

Feb 28 2018 10:22 PM UTC

}// 136/140

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Bumpy ride.

u/dwardu

drawImage() arguments 0,0,1920,1080 may be dropped!

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Agnes

function u(t) {

q=5*(1+C(t));x.filter=`blur(${q}px)`;for(i=c.width=c.height=100;i--;)for(j=100;j--;)with(x)fillStyle='#'+i*j,fillRect(i-q,j-q,2*q,2*q);;

Feb 28 2018 9:45 PM UTC

}// 136/140

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u/donbright

i really like this one... the way it works is really interesting, variable size "pixels" plus blur
u/Agnes

Wait whoops, I just realised the filter doesn't do anything because I apply it before I reset the canvas in the first for loop. The blurry effect is just from the variable-sized pixels. Interesting?

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Blane

function u(t) {

t==0?i=0:i++;a=0;b=172*i-(i%2*-1+i)*87;with(x)for(j=26;j--;stroke())moveTo(a,b),lineTo(a+=50+50*(j%2),b+=87*(2*(i%2)-1)*(j%2-1)*C(j*1.57))

Feb 28 2018 6:39 PM UTC

}// 138/140

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Drawing a Hex grid

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jylikangas

function u(t) {

x.transform(55,0,0,90,960,160)
x.fill(POIROT=new Path2D([...'M08Q4937C392607M04H7V3H0M00Q6063L03'].join` `))
x.scale(-1,1);x.fill(POIROT)

Feb 28 2018 4:25 PM UTC

}// 137/140

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Training spread syntax and Path2D with Hercule Poirot. :)

u/zanella

Wait, how did you call .join without parentheses?
u/jylikangas

That's ES6 stuff - I'm passing the function a template literal by using back-ticks
u/AnnanFay

Hmm, that's a neat trick.
u/artfarnaa

More of these please.... {:
u/iverjo

#path2d

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dwardu

function u(t) {

r=n=>Math.floor(Math.random()*n)
x.font='48px Verdana'
for(i=0;i<99;i++){
x.clearRect(p=r(40)*48,q=r(22)*48,48,48)
x.fillText(r(10),p,q+48)}

Feb 28 2018 3:51 PM UTC

}// 140/140

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u/donbright

fun
u/dwardu

😀

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dwardu

function u(t) {

c.width|=0
v=.8*C(t)
d=.3+.3*S(30*t)
x.beginPath()
x.moveTo(p=100+(100*t)%1720,q=540+440*S(t))
x.arc(p,q,100,v+d,v-d)
x.lineTo(p,q)
x.fill()

Feb 28 2018 2:16 PM UTC

}// 140/140

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yonatan

remix of d/7105 by u/yonatan

function u(t) {

for(X=c.width=99;X--;)for(Y=57;Y--;x.fillRect(X,Y,1,1))q=X*X+Y*Y,z=(9e3-q)**-.3,x.fillStyle=`hsl(${(t*9+X*z^Y*z)*22},50%,${95-q**.5}%`

Feb 28 2018 10:31 AM UTC

}// 134/140

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lit and colored

Show more comments…
u/donbright

!!!!!!!!!!!!!!
u/sigveseb

Lit af
u/magna

^
u/joeytwiddle

#lighting #sphere
u/FireFly

Holy cow!! :o
u/Cloud

Wooooow!!!
u/vain

amazing!

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DirtyDan

function u(t) {

p=Math.PI*2
for(c.width+=i=0;i++<500;)x.beginPath(),x.ellipse(960,540,540*i/500,540*Math.abs(S(t)),S(T(C(t/99*p)*p)*i/500*p),0,7),x.stroke()

Feb 28 2018 12:18 AM UTC

}// 140/140

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