Dweets awesomed by u/lionleaf

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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pavel

function u(t) {

with(x)for(c.width|=k=320,scale(9,9);--k;arc(107,60,16*(k>>5)+16/(1+1e5**(.5+k%2-t%2)),a=(t/2-k)%11*.571,a))k%2&&beginPath(stroke())

Nov 26 2018 7:23 PM UTC

}// 132/140

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Walking Spiral #beesandbombs

u/pavel

Using scale(9,9) to get thick lines and shave some digits from coordinate numbers (e.g. 60 vs 540 for height)
u/pavel

x.arc(X,Y,r,a,a) = x.lineTo(X+r*C(a),Y+r*S(a))
u/katkip

Duuude
u/katkip

Awesomeee

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katkip

function u(t) {

c.style.background='#eee';c.width=400;for(n=900;n--;)x.lineTo(200+S(n*n+t)*200,114+C(n*n+n)*200);x.fill()

Nov 26 2018 2:38 PM UTC

}// 105/140

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Electricity

u/Xen

Nice!
u/katkip

Yep
u/aleamb

fucking awesome!

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rodrigo.siqueira

remix of d/11158 by u/rodrigo.siqueira

function u(t) {

F=f=>80+f(i)*i%15+f(i*i)*i**.2*t
for(i=4e3;t<7&&i--;x.fillRect(F(C)*13+T(t)*22,F(T)*5+t*32,1,1))
x.fillStyle=`hsl(0 50%${t*13-F(S)/3}%`

Nov 26 2018 4:33 AM UTC

}// 135/140

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Generative Spray Abstract Art

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pavel

function u(t) {

for(i=c.width|=0;Y=i-->>6;x.fill(x.arc(((i&62)-Y)*48-o*C(A=~~t/.9549),(Y-2)*83-o*S(A),30,A,A-3,i%2)))x.beginPath(o=i%2*96/(1+1e9**(.5-t%1)))

Nov 25 2018 5:45 AM UTC

}// 140/140

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Sliced Dots #beesandbombs

u/pavel

Golfed 3 loops into one. Lowest bit of i determines half-circle, next 5 bits determine X and the rest determine Y
u/pavel

i&62 = (i>>1)%32*2 = X*2
u/jylikangas

There's a lot of really clever tricks in your dweets. Keep them coming! :)
u/katkip

wow

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jylikangas

function u(t) {

for(c.width=-1,i=99;i--;x.fillRect(i*9,99,9,S(i+t*5^9)*20-40))x[F='fillText']("€>",50,y=20+S(t)*7),x[F]("──",50+t%2*400,y),x[F]("¥",y*9,9+y)

Nov 24 2018 8:35 PM UTC

}// 140/140

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Dwitter Defender

u/magna

Awesome!
u/katkip

That's too awesome.
u/joeytwiddle

#game #tribute

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rodrigo.siqueira

remix of d/11131 by u/rodrigo.siqueira

function u(t) {

c.width|=N=890;x.font='3em"'
JSON.stringify(Object.keys(this)).split`"`.some((_,i)=>x.fillText(_,S(t+i)*280+N,N+i*9-Math.abs(S(t/40)*5e3)))

Nov 23 2018 6:13 PM UTC

}// 139/140

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DNA CODE

u/katkip

that's smart
u/lionleaf

#dna

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pavel

function u(t) {

with(x)for(j=9;--j;)for(i=2<<j,f=6.28/i;i--;fill())for(beginPath(k=2);k--;fillStyle=i%2?'#fff':R())arc(960,540,k*190*j**.5,a=(i+t%2)*f,a+f)

Nov 23 2018 4:55 AM UTC

}// 139/140

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Black and white spinners #beesandbombs

u/katkip

1.5 dimension fidget spinner
u/BackendForth

Looks like a rotary encoder.

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pavel

function u(t) {

with(x)for(k=n=j=255;j--;k=2,fill())for(beginPath(fillStyle=R(T=(t^k)%2*128,T,i=4));i--;)arc((j%9-t%1)*n+T,(j>>4)*n+T,64*k,a=(i-t%1)*11/7,a)

Nov 13 2018 2:29 AM UTC

}// 140/140

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u/yonatan

arc?!
u/anotherkitten

oh you sly dog very well done
u/pavel

:)
u/jylikangas

Very cool! You can save 3 bytes by removing the unnecessary %1 from t when calculating a and also doing <<7 instead of *128. If someone is wondering how this works using a+1 instead of a at the end may help. :)
u/katkip

#beesandbombs
u/pavel

Removing %1 at the end breaks the animation on my iPhone.

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pavel

function u(t) {

for(d=t<8,n=i=256;i--;x.fillRect(d?9*i:855+n*i*(i<2),!d*300,50,d?4:50))x.fillStyle=R(C((t|Math.abs(i-107))**.5*t)<0&&n)
x.drawImage(c,0,d*4)

Nov 12 2018 3:19 AM UTC

}// 140/140

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Demon

Show more comments…
u/magna

Amazing!
u/iverjo

Spot on!
u/katkip

nice idea
u/ndr3w221

this is awesome!
u/and3k5

i did not expect the last bit! scary!
u/aleamb

great! #waitforit
u/lionleaf

Amazing #demon

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veubeke

function u(t) {

c.width^=0
x.font='200px"',
x.fillText('Mirrored',590,540)
for(i=27;i--;)x.drawImage(c,500,405+i*5,800,5,500+C(i/2+t*8)*8,700-i*5,800,5)

Nov 4 2018 6:48 PM UTC

}// 136/140

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