Dweets awesomed by u/rikardlindstrom

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: #Opposites

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fervour

function u(t) {

p=40;for(i=48;i--;)for(j=27;j--;){c=(C(i/3+t*3)+S(C(j/4)+t*5)+S((i+j+t*9)/12))*50;x.fillStyle=`hsl(${c},99%,${c}%)`;x.fillRect(i*p,j*p,p,p)}

Mar 28 2018 11:59 AM UTC

}// 140/140

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u/iverjo

Plasma!
u/DirtyDan

Remixed: d/7527

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jylikangas

function u(t) {

with(x)for(i=16,c.width=198;i--;stroke()&drawImage(c,globalAlpha=.1,i))lineTo(99+S(t+=(7-i)%2/.64)*99/(Z=(t<6)+1+C(t)),49+((i%4/2<<6)-25)/Z)

Mar 28 2018 5:24 AM UTC

}// 140/140

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White room traps you!

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u/aemkei

Stunning. As always.
u/joeytwiddle

Whoa! 😮
u/zanella

There's. A. Reflection. In. The. Floor.
u/loni_art

jesus!
u/iverjo

Well done!
u/DirtyDan

Remixed: d/7500
u/DirtyDan

whoops, wrong dweet
u/DirtyDan

Well this was a train wreck, wrong link too
u/jylikangas

http://jsriffs.blogspot.fi/2018/04/making-of…
u/joeytwiddle

#renderer #reflection #raytrace (or looks like it anyway)

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SnakeBearSoftware

function u(t) {

c.width^=0
for(i=0;i<63;i+=.2)x.stroke(),x.beginPath(),
r=~~(i/6.3),
x.arc(860+r*S(i)*50+r*10*C(t+i*2),540+r*C(i)*50+r*10*S(t+i*2),6,0,6.3)

Mar 27 2018 4:36 PM UTC

}// 139/140

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u/fujimotos

My first thought was: "Oh this REALLY looks like Vicks drops" :)
u/BirdsTweetCodersDweet

I thought of a Roleaux rotor for some reason :/
u/rhys5584

me too ^

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jylikangas

function u(t) {

A=r=>x.fill(x.arc(960+R*C(t),540+R*S(t),r,0,7))
f%2&&(t+=3)
x.beginPath(A(R=180))
x.fillStyle='#'+(f++%2?999:111)
A(45)}{f=0

Mar 26 2018 5:01 AM UTC

}// 124/140

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Animated Yin Yang

u/jylikangas

t+=f%2*3 to save 3 more bytes
u/jylikangas

R=180+f%2*3 to add an outline
u/joeytwiddle

#yinyang

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DirtyDan

function u(t) {

for(c.width+=i=0;i++<99;x.globalCompositeOperation='xor')x.beginPath(x.fill()),x.arc(960+i*T(a=3*S(t)),540+3*C(T(i/120+(a<0?t:-t))),i*5,0,7)

Mar 25 2018 6:22 PM UTC

}// 140/140

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If you want to remix, for extra space delete "a=" and replace "(a<0?t:-t)" with t. That stuff just reverses the direction of the ripple depending on what side it's on.

u/magna

Awesome!
u/DirtyDan

check out d/6724
u/DirtyDan

* d/6812

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Agnes

function u(t) {

with(x)for(w=c.width=1920,i=100,translate(w/2,540);i--;r=w/i,rotate(T(t/30)),strokeRect(m=-r/2,m,r,r));

Mar 25 2018 4:46 PM UTC

}// 103/140

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(Looks way better in full screen.)

u/joeytwiddle

#tunnel #spiral #mercury #timeless #doctor_strange

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New_Core

remix of d/7293 by u/New_Core

function u(t) {

c.width|=V=960,H=560
for(j=99;j--;x.beginPath())for(i=5;i--;x.stroke())Z=C(a=i*1.57+t+5*S(t+j/99))+8,x.lineTo(V+(S(a))/Z*V,H+(6-(j/8))/Z*H)

Mar 25 2018 11:00 AM UTC

}// 139/140

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u/Xen

very slick
u/joeytwiddle

#twister

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nystrand

remix of d/6046 by u/nystrand

function u(t) {

for(i=w=2e3;--i;x.fillStyle=R(N*a/4,50+a*3+w,w,.1),x.fillRect(-2,-a,6,w,w=3))a=i%32,x.setTransform(32-a,w,C(t-i/333)*9+w,N=9-T(i>>5),i,1070)

Mar 23 2018 3:53 PM UTC

}// 140/140

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Color version

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u/BuRRak

Amazing
u/aleamb

wow!
u/jylikangas

What a clever way to do the background. I also like how you used Math.tan to get the trees.
u/magna

wat.
u/sigveseb

<3
u/iverjo

Niiice
u/joeytwiddle

very nice again! :)
u/iverjo

#grass
u/joeytwiddle

#tree #trees #palm #palm_tree #organic #landscape
u/joeytwiddle

#scene ;-)

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p01

remix of d/7393 by u/yonatan

function u(t) {

for(c.width=i=210;i-=1/8;x.fillRect(99+(i-99)*C(t)+S(i)*r,S(i/67+S(t)/2)*75+C(i)*r,9,9))r=33*S(i/70-6),x.fillStyle=R(a=r*(7-S(i*2)**8),a*.8)

Mar 23 2018 3:33 PM UTC

}// 140/140

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💫 SPINNING BANANA 🍌

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u/p01

Now in centered glory with horizontal and vertical tilt
u/yonatan

Nice!!!
u/magna

Awesome!
u/iverjo

Wow!
u/zanella

Decades from now, we'll all be telling our grandchildren about the Dwitter Banana Frenzy of 2018 .
u/joeytwiddle

#banana

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jylikangas

function u(t) {

for(c.width=i=608;i--;i%320<64&&i&2||i>447&i%32<5||x.fillRect(99+S(A)*(60+9*(i>255)),(i>>5)*11+Q*9,9+i%5,9))x.globalAlpha=Q=C(A=i/5.09+S(t))

Mar 23 2018 5:38 AM UTC

}// 140/140

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Spooky medieval tower

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u/Pjaerr

That's cool!
u/p01

I see what you did with the globalAlpha. Same trick as in https://www.dwitter.net/d/5747
u/aleamb

great!
u/sigveseb

A+++
u/joeytwiddle

coool
u/tomxor

This reminds me of the old game 'Nebulus": https://youtu.be/aI2UHTT18bs?t=28
u/KilledByAPixel

#castle
u/katkip

i bet you are the winner
u/vain

oh my god. absolutely unbelievable! as tomxor said - it reminds of the great Nebulus game

dwitter.net | rikardlindstrom (7537)