Dweets awesomed by u/diceroll123

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: #ScaryMovies

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f8f82804

remix of d/11919 by u/mxfh

function u(t) {

for(c.width|=i=384;i--;x.fillRect(960-w/2+e,4*i,w+e,4)){y=i/80-2;w=y>.7?3e3:(1-y*y)**.5*640;e=T(t/9+i*w);x.fillStyle=`hsl(${-y}rad 99%50%)`}

Jan 24 2019 8:12 PM UTC

}// 140/140

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#minimal #outrun #glitch #sunset

u/f8f82804

d/11931
u/pavel

Omitting the space in 99%50% does not work in Safari, everything is black.
u/f8f82804

yeah safari stinks
u/f8f82804

try "for(c.width|=i=384;i--;x.fillRect(960-w/2+e,4*i,w+e,4))y=i/80-2,w=y>.7?3e3:(1-y*y)**.5*640,e=T(t/9+i*w),x.fillStyle=hsl(${-y}rad 99% 50%)" which should work and is still <140
u/bekfast2390

easrdfghj

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jylikangas

function u(t) {

eval(unescape(escape`景爨硛昽≦楬汒散琢崨〬〬眽㙥㌬眩ⱴ⨽㤹Ⱪ㴳㔰㬭⵩㭸⹦楬汓瑹汥㵒⡩ⱸ学崨含⡴☲⤪稭欯㈬夽稪㈫启㈬稯㔫欪㌬稯㠩ⱔ㴹㘰⭓⡓⡴⼹㤩⨲⤪㤹⵺ⰮㄫⅫ⤬硛晝⡔⵺⨳ⱙⱺ⨸Ⱝ琯㤥㤪欩⥺㵷⽩Ⱬ㴡⠭⵴☱㔩⩺`.replace(/u(..)/g,"$1%")))

Dec 11 2018 10:29 AM UTC

}// 140/140

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Ghost Train v2

u/jylikangas

HD resolution, brighter, clean beginning, different tunnel and more complex path
u/metamero

https://youtu.be/kNkvepA4AZU yeah yeah yeah yeah yeah
u/f8f82804

#outrun #ethereal
u/vain

holy cow! How is this possible? Incredible !!!

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tomxor

function u(t) {

x.fillRect(0,0,i=2e3,i)
for(t+=160;p=i&1,m=t/C(t/i)+p*(t/2+i%t),i--;)x.clearRect(
960+m*S(n=t/9+i*i)*C(!p*i/t),
540+m*C(n+p*2),s=3-C(n)*3,s)

Oct 17 2018 8:45 PM UTC

}// 140/140

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#space #planet #saturn

Show more comments…
u/joeytwiddle

Wow, beautiful! I am blown away. #dots #lighting #shading
u/lionleaf

Wow! That's amazing
u/magna

WOW!
u/sigveseb

no way!
u/yonatan

beautiful!
u/jellyedwards

That's incredible, well done!
u/jellyedwards

If you change this bit too use t it's like Saturn uses its ring as a hula hoop: 540+m*C(n+p*t)
u/katkip

woow... gj bro
u/keithclark

Nice!!!
u/aleamb

wow! superb!
u/iverjo

That's pretty rad
u/rnbw

my mind is officially boggled o_o
u/Purpzie

This is absolutely beautiful.
u/tomxor

Thanks for all the kind comments :) for those interested: the key is in the parity bit p=i&1 this allowed me to combine two different but similar functions by multiplying parts in an out on each iteration. You should be able to pull the two apart into something more intelligible.
u/magna

@tomxor are you on Twitter as @tomxor by any chance?
u/tomxor

I am not, nor am I on any other social network... unless you consider Github one :P but a different pseudonym..
u/jylikangas

Beautiful dweet!
u/aleamb

The Cosmos is all that is, or ever was, or ever will be. The contemplation of the this Cosmos stir us.
u/Renaud___

so Beautiful
u/ivylab

This is absolute badass
u/vain

OMG! This part blew me away!
u/jdspugh

Well done!

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hollo47

function u(t) {

c.width|=0;
for(i=-50;i++<50;)
for(j=1;j++<150;)f=33e3*i,h=j*58,
g=60e3+S(j/11+t*2)*9999+C(i/3+t)*9e3,
x.fillRect(960+f/h*3,540+g/h*3,1,1);

May 17 2018 4:10 PM UTC

}// 139/140

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#ocean waves

u/joeytwiddle

Nice, dots on the beach. I used 5,5 so I could see the dots more clearly, and t*=15 for speed

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jylikangas

remix of d/7171 by u/jylikangas

function u(t) {

for(i=110;i--;)for(j=64;j--;x.fillStyle=R(L*=1+j*i&79?(2+t%6)*j:200,x.fillRect(i*T,j*T,T=18,T),L*2))L=!(j/8<6+C(i-j-t)&(j/9>3+S(i|3)|j%7<1))

Apr 23 2018 9:32 AM UTC

}// 140/140

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Neon city wakes up

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u/sigveseb

even better than before!
u/sigveseb

#city
u/BalintCsala

Sorry for the language, but what the fuck
u/iverjo

Nice! Better colors than your previous version https://www.dwitter.net/d/7171 #cityscape #pixel
u/hollo47

I love that there is so much going on in its 8bit aesthetic! Wouldn't mind this becoming a new trend!
u/zanella

The reflection doesn't match the buildings. Lame.
u/zanella

JUST KIDDING! It's freaking awesome!
u/jylikangas

Darn I knew there was a bug in there somewhere. :D
u/jylikangas

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

Thanks for the making of post, wish every cool dweet had one of those!
u/joeytwiddle

#landscape #scene #water
u/iverjo

#makingof

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BalintCsala

function u(t) {

for(c.width=500,i=t|0;i--;)[[X=250,(Y=150)+(K=(t-1-i)*9)],[X-i*9,Y],[X,Y-K],[X+i*9,Y],[X,Y+K]].map(y=>x.lineTo(...y))
x.stroke();

Mar 21 2018 10:06 PM UTC

}// 129/140

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u/diceroll123

I used to draw these all the time in grade school. 👌
u/joeytwiddle

I think the first graphics I ever drew was something like that
u/13thptr

#astroid

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jylikangas

function u(t) {

for(X=c.width=450;X--;x[f](X%50*5+t%23*9,0,3,X))x[f='fillRect'](X-X%5*25,99+S(X*5)*5-(h=9*S(X%64/16))+(X>>6)*25%50,1,h*2)&x[f](X*2,50+h,9,1)

Mar 17 2018 8:47 AM UTC

}// 140/140

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Scanimation Fish

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u/Lynext

Genius!
u/magna

If some technique exists, there's a dweet version of it.
u/sigveseb

this is so impressive :)
u/sigveseb

https://www.youtube.com/watch?v=LCIsIfEOEI8 some more inspiration for other dweets perhaps!
u/iverjo

#fish
u/aleamb

#scanimation
u/pythech

blew my brains out
u/rep_movsd

#illusion
u/rep_movsd

#underrated
u/vain

this blow me away! How...? O.o

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Agnes

function u(t) {

with(x)for(c.width|=i=9,scale(m=100,m),font='2px A',fillText("🚚",r=20-t*(1+.2*C(t)),6);i--;fillRect(Math.min(4+i+S(t)*3,r+i/2-4),4,.5,2));

Mar 9 2018 1:49 PM UTC

}// 138/140

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u/fujimotos

Haha, good.
u/jylikangas

Awesome! Reminds me of Shikato animations. :D
u/aleamb

Lol! nice!
u/Xen

love it :-)
u/magna

LOL
u/M1T0

haha very smart
u/Agnes

#default
u/joeytwiddle

#physics
u/micahcowan

#truck #emoji
u/vain

haha... great idea and impressive implementation

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Batrachus

function u(t) {

for(c.width*=j=1;j<11;j*=10)for(a=Math.exp(t%2.3),i=-45;i<45;i++){x[f="fillRect"](d=i*20*j*a+960,0,b=5-5/a/j,1e9);x[f](0,d-420,1e9,b)}

Feb 27 2018 1:18 AM UTC

}// 134/140

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u/joeytwiddle

Calculus
u/Batrachus

Don't know why I used exp, when I could have used pow
u/BirdsTweetCodersDweet

Pow doesn't work on Chrome for me for some reason
u/joeytwiddle

#infinite #loop

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snydej

remix of d/7060 by u/snydej

function u(t) {

for(T(0,i=4e3,.06);r=--i**4.3;T(t**(i<9?9:i<30)*200+r,a=r%5*S(i+t)**2,51*a))T=(w,s,a)=>x.fillRect(w*2%2e3,w%1079,s,s,x.fillStyle=R(a,a,a,a))

Feb 24 2018 2:52 AM UTC

}// 140/140

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Golfed this one better and added a few details, like differing star sizes.

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u/DirtyDan

Cool!
u/snydej

Feature request: When in fullscreen center the canvas and fill unused space with black. I'm guessing the white background is there in case the dweet has transparency. Would it be possible to put the canvas in a div with a white background and put a black background behind that?
u/New_Core

Did you want t?0:c.height=2e3 infront of your dweet and expand the w%1079 number by a few 100?
u/snydej

It'd be nice but I don't have the room to add it to this dweet. I'm sure some dweets do that and so I tried to suggest a fix that wouldn't break that behavior.
u/AnnanFay

"When in fullscreen center the canvas and fill unused space with black" This seems like it would break many dweets.
u/snydej

By unused space I mean the space OUTSIDE the canvas. This is pretty standard behavior when fullscreening anything.
u/snydej

For instance, d/6967. On my monitor the canvas does not extend to the bottom of the screen in fullscreen mode and there is a white bar running along the bottom. This makes the dweet look cut off. If it were a black bar it would look fine because the screen would just look dark there. This is how everything from TVs to YouTube deal with fullscreening when the source material that has a different aspect ratio from the screen.
u/snydej

by d/6967 above I meant https://www.dwitter.net/d/6967 I think the period messed up the link
u/snydej

Actually it looks like the canvases already their background color set to white (I had assumed that the background was not set and that setting it would change the rendering of some dweets, but it looks like that's not the case.) So you wouldn't even need the additional div that I suggested originally.
u/Renaud___

Beautiful
u/aleamb

amazing
u/joeytwiddle

I think the canvas is transparent by default, the white is just the page behind it.
u/snydej

Nope, that's what I thought too. The image data within the canvas is initially transparent (this affects the rendering of dweets that call x.drawImage(c, ... ) but there is also a background css property on the canvas that is set to white and this causes transparent areas of the canvas to show up as white regardless of what's behind them. You can try this out by locally tweaking the css for the body element that contains the canvas. On most dweets you don't see any part of this element unless the dweet is fullscreened but there are exceptions like d/7084 . I don't know what the best way to handle that would be.
u/donbright

:)
u/iverjo

#stars
u/joeytwiddle

#landscape #scene
u/larzuk

quite impressive!
u/vain

nice night sky with shooting stars. just incredible work

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