Dweets awesomed by u/doof

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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trancor

function u(t) {

t?x.globalAlpha=.1:n=w=c.width=999
for(i=3e3;i>=0;i--)x.fillStyle=R(i%4*255),x.fillRect(T(i&n++)^n++%w,k=T(n|i+t)|S(i--)*w-50,k=k>0?60:0,19)

May 8 2018 12:33 AM UTC

}// 140/140

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trancor

remix of d/7988 by u/trancor

function u(t) {

d=(j,r)=>{x.beginPath(),x.arc(j*4+S(t*3+r)*r,T(t)*r+r*5,S(t+=j&6)*r/5+r,0,7),x.fill(),r>2&&(r/=2,d(j-r,r),d(j,r))}
d(w=(c.width=999)/2,600)

May 5 2018 8:08 AM UTC

}// 139/140

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jylikangas

function u(t) {

for(c.width=i=W=300;i-=2;)for(j=40;j<W;x.fillRect(i,j++-h,2,h+1))x.fillStyle=R(h=((d=W*3/j)*S(A=i/W+S(t))-t&d*C(A)+t*9&7)*99/d,j|2,!h&&W-j)

Mar 8 2018 6:16 AM UTC

}// 139/140

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Tuulian Minecraft :)

Show more comments…
u/yonatan

Beautiful!!
u/nystrand

Impressive!
u/joeytwiddle

Flipping awesome!
u/aleamb

epic!!
u/loni_art

Damn! my pc is dyingwith this but at least its awesome!
u/magna

What. The.
u/artfarnaa

Dangerous if this got out.
u/zanella

... AND there's still one character left. Jesus!
u/p01

AMAZING! Btw, you can save 3 bytes without changing the visuals or camera path by using fillRect(i,j++,2,~h) ;)
u/jylikangas

Thanks all! p01 - I didn't know fillRect takes negative height. That's gonna save bytes in my other demos too - big thanks for the tip!
u/jylikangas

118 byte version including Mathieu's tip... for(c.width=i=W=199;i--;)for(j=9;j<W;x.fillRect(i,j++,2,~h))x.fillStyle=R(h=((d=W*4/j)*S(A=i/W)&d*C(A)+t)*99/d,j,h||W)
u/jylikangas

<W;x.fillRect(i,j++,2,~h))x.fillStyle=R(h=((d=W*4/j)*S(A=i/W)&d*C(A)+t)*99/d,j,h||W)
u/iverjo

Wow, incredible!
u/p01

https://www.dwitter.net/d/7337 Check out "Tuulian Minecraft: Sheep edition": 140 characters and one sheep.
u/iverjo

#minecraft
u/donbright

:O
u/Conjuror

love it and it is cool
u/vain

Unbelievable cool faked 3d minecraft like scene
u/CalSch

My phone's cpu does not vibe with this, but it is cool nonetheless.

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keithclark

function u(t) {

with(x)for(c.width=L=a=255,globalCompositeOperation='exclusion';a-=5;arc(v=S(G+=t)*90+L/2,v/2,a,~beginPath(fill()),6))fillStyle=R(L,G=a%2*L)

Mar 7 2018 5:56 PM UTC

}// 140/140

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I was hoping for a more interesting vertical path but couldn't find enough bytes.

u/AnnanFay

S(G+t) saves a character.
u/keithclark

Thanks - that was left over from a previous optimisation for computing a different Y offset

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BalintCsala

function u(t) {

for(i=0;i++<50;)(x.fillStyle=`hsl(${(i+t)*50%360},80%,80%`,x.fillRect(S(g=i/50*6.28)*(k=S(g+t)*300)+500,C(g)*k+500,20,20)) // Hey there!

Mar 7 2018 3:40 PM UTC

}// 137/140

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u/akm

I was just about to hop on dwitter and attempt this! https://v.redd.it/r3e1n42hjbk01 Looks awesome!

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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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snydej

function u(t) {

with(x)fillStyle=`hsl(${t*9},80%,60%`,setTransform(1.02,.04,-.04,.98,960,540),fillRect(400*S(t),0,50,50),drawImage(c,-960,-540)

Feb 22 2018 7:48 PM UTC

}// 127/140

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snydej

function u(t) {

for(i=h=540;i--;f(h-h*S(i*R+t),9,70,1))f=(y,s,l,a)=>x.fillRect(i*4,y,s,s,x.fillStyle=`hsla(${i+t*l},80%,${l}%,${a}`)
f(0,3e3,0,R=S(t)/h+5/h)

Feb 22 2018 11:07 AM UTC

}// 140/140

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u/sigveseb

Solid stuff! u/snydej keeps rocking dwitter :)
u/M1T0

wow super nice!

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snydej

remix of d/6785 by u/PietPtr

function u(t) {

with(x)for(i=364;i--;beginPath(fill()))for(fillStyle=`hsl(${(t+i)*79},50%,50%)`,j=6;j--;)lineTo(i%28*79+50*C(s=j+j/21),i%26*45+50*S(s))

Feb 14 2018 7:21 PM UTC

}// 135/140

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snydej

function u(t) {

for(i=w=2e3;r=--i**4.7;x.fillRect(0,-60,30,90))x.setTransform(s=S(r%4*t),-1,s,1,r%w,(r%99*t)%w),x.fillStyle=`hsl(60,${r%50}%,${30*s**8+60}%`

Feb 14 2018 7:35 AM UTC

}// 140/140

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Show more comments…
u/aleamb

really awesome!
u/snydej

Thanks :)
u/magna

WOW!
u/sigveseb

Rocks so hard :)
u/Apex

My computer is now a jet engine. Looks cool though
u/iverjo

Gold and silver confetti! I like it :)
u/joeytwiddle

#shiny

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