Dweets awesomed by u/Erazed

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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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 :)

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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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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

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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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jylikangas

function u(t) {

c.width=W=512;for(i=W;i--;h=W/d,x.fillRect(i,99-h/2,2/d,h))for(d=1,X=97,Y=t*9;C((X>>3)*(Y>>3))<.9;d+=.06)X+=C(t+i/W),Y+=S(t+i/W)
//B.J.=lost

Feb 25 2018 10:56 AM UTC

}// 140/140

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My 1st dweet - some Wolfenstein 3D fun. :)

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u/aleamb

nice!!!
u/BirdsTweetCodersDweet

What's up with that weird comment at the end?
u/jylikangas

B.J. is the main character from Wolfenstein and in the demo he is obviously lost. Thus the code is properly commented. :)
u/cantelope

looks familiar :P https://www.dwitter.net/d/2961
u/jylikangas

Wolfenstein tributes should look familiar. :) p01 is a legend!
u/iverjo

Wow!
u/iverjo

#wolfenstein

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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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DirtyDan

remix of d/7021 by u/DirtyDan

function u(t) {

with(x)for(i=82;i-->1;lineWidth=9,strokeStyle="#FFF")beginPath(arc(960+C(a=t*i/9)*(d=i*9*S(t)),540+S(a)*d,i*3,0,7),fill(stroke()))

Feb 21 2018 12:01 AM UTC

}// 130/140

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u/akm

nice!

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triclops200

function u(t) {

w=1920;c.width=w;m=150
for(i=0;i<m;i++){k=C(t*2+i/50)*255
x.fillStyle=R(255-k/2,0,k)
x.fillRect(i/m*w,w/3.6+100*S(i/10+t/2),10,150*C(i+t))}

Feb 20 2018 11:11 PM UTC

}// 139/140

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u/BirdsTweetCodersDweet

Golfed-ish... Maybe learn some new techniques fromit IDEK, https://www.dwitter.net/d/7041
u/BirdsTweetCodersDweet

See the link in the comments of that one as well. Shortened it some more.
u/triclops200

The first one had golf that kept the output the same, but the second has output changes (the /3.6, for example, was there to approximate center of screen y), otherwise, good golf
u/snydej

Note that "540" is shorter than "w/3.6" ;)

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marc8

function u(t) {

c.width|=0
s=50;v=t*4
x.font="60px A"
for(i=0;i<t;i++){
x.arc(1000-v*(t-i),540,s*(t-i),0,7)
x.stroke()}x.fillText("Mach "+v/s,1630,560)

Feb 20 2018 9:10 PM UTC

}// 135/140

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The physics dweets: supersonic motion

u/aleamb

awesome!
u/magna

DOPE!
u/joeytwiddle

#physics
u/Purpzie

Goodness gracious this is cool.

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snydej

remix of d/6990 by u/snydej

function u(t) {

c.width|=p=2.0943;[0,1,2].map(d=>x.fillRect(0,0,h=540,h,x.setTransform(s=S(q=d*p+t),C(q),S(q+=p),C(q),960,h),x.fillStyle=R(l=140+80*s,l,l)))

Feb 18 2018 7:10 PM UTC

}// 140/140

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u/aleamb

cooooooooool
u/magna

WAAAAAA
u/zanella

Niiiiiiiiiice!
u/joeytwiddle

#cube #lighting #renderer
u/S.T.L.K.R.

wtf very nice
u/vain

amazing lightsources cube

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zox

function u(t) {

w=c.width|=0
for(i=1;i<9;i++){
x.arc(w/2,540,150+(45*i),S(t),7*S(t))
x.arc(w/2,540,150+(28*i),7*S(t),S(t))
x.lineWidth=2+T(t+i)
x.stroke()}

Feb 18 2018 5:30 AM UTC

}// 139/140

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u/aleamb

Capsule Corp. :)

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New_Core

function u(t) {

c.style.background="radial-gradient(#f73 5%,#113 "+(99*S(t))+"%)"
r=a=>S(a*8)
for(i=99;i--;)x.fillRect(i*25+r(i)*50,1080,50,-700+r(i*i)*99)

Feb 16 2018 10:31 PM UTC

}// 139/140

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Show more comments…
u/Xen

nicely done
u/aleamb

nice!!
u/magna

Yes.
u/BirdsTweetCodersDweet

Cool!
u/sigveseb

Woow, I was 100% expecting the code to be an external network request. So good!
u/iverjo

Wow!
u/Kalanchoe

Beautiful
u/donbright

:p
u/donbright

i mean :o
u/zanella

The most awesome thing about Dwitter is how the quality of the dweets is constantly increasing. Everybody is learning new tricks and techniques from one another and doing more and more awesome stuff. :)
u/sj_

😍
u/New_Core

#city
u/joeytwiddle

#landscape #sunset

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