Dweets awesomed by u/sfz

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.

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FireFly

function u(t) {

for(c.width|=A=16,i=9e3;i--;(X&8?B&2:"<fnvff<Ā~``x```".charCodeAt((B/A&3)*8+Y%8)>>7-X%8&1)&&x.fillRect(A*X,A*Y,A,A))X=i&127,Y=i>>7,B=X+Y+t*8

Mar 6 2017 8:36 PM UTC

}// 140/140

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00FF. More embedded bitmap fun :)

u/iverjo

Cool!
u/sfz

Going to take a three month sabbatical and figure out how this works.
u/FireFly

Anything in particular that I should explain? It might help to draw the bits of the codepoints in the string literal on a piece of paper, as an 8×15 grid (15 chars, 8 bits per char). Ā is U+100, used to encode 0x00.
u/sfz

Neat trick!

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sfz

function u(t) {

x.fillStyle=`hsl(${9*t},66%,66%)`
t=t/6+1
P=(U=(V=(W=2+t)+1)+3)+5
X=960+640*S(W*t+V)+320*S(V*t+U)
Y=500+500*S(U*t+P)
x.fillRect(X,Y,W,W)

Mar 6 2017 7:37 PM UTC

}// 136/140

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Harmonograph

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veubeke

function u(t) {

c.width^=o=0;for(i=30;i--;x.stroke())P=Math.PI,$=S(t%P),_=C(i/5)*$,x.beginPath(o+=3-$+_),x.ellipse(o*4+t*60-300,(21+_-S(t%P))*50,9,30,0,0,7)

Mar 6 2017 5:39 PM UTC

}// 140/140

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Inspired by https://www.dwitter.net/d/1829

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sfz

function u(t) {

c.width|=w=960
h=540
with(x){f=(X,Y)=>{for(i=h;i--;)beginPath(),arc(w*X+w,h*Y+h,i*6,0,7,0),stroke()}
s=S(t)
d=C(t)
f(-s,-s)
f(s,d)
f(-d,s)}

Mar 6 2017 5:15 PM UTC

}// 139/140

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Moiré

u/SpecialAgent

Nice!

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FireFly

function u(t) {

for(c.width|=i=0;i<40;i+=.025)R=S(t)/4+.25,r=.7-R,x.fillRect((A=R+r*S(D=i%1*44+88))*C(E=i+t/10)*480+960,(B=A*S(E)+r*C(D))*340+510,W=4-B*3,W)

Mar 6 2017 12:46 PM UTC

}// 140/140

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Torus-sphere thing

u/donbright

good one
u/SpecialAgent

excellent

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veubeke

remix of d/1893 by u/veubeke

function u(t) {

$=500;for(i=2e3;a=i--/$;x.fillRect(i,t*70+_*15,1,$))_=C(a+t)+C(a-t)*6+(r=i*i/t%1),
x.fillStyle=t<5?'#def':`hsl(${$+_},80%,${50-t*2-_-r*9}%)`

Mar 6 2017 8:25 AM UTC

}// 140/140

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Show more comments…
u/donbright

brilliant!!!!!!!!!!
u/SpecialAgent

nice!
u/iverjo

Amazing :D Now we just need a sun in the top left corner ;)
u/iverjo

http://iver.io/stuff/dweet-landscape-combo.g… (warning: 3 MB)
u/magna

Still missin: 🐄
u/sigveseb

Lol iverjo nice shoop
u/PiggyClone205

Bring us cows, veubeke.
u/joeytwiddle

#landscape #scene
u/micahcowan

#pretty

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sfz

function u(t) {

s=42
for(i=2e3;i--;)x.fillStyle=`hsla(${t*i},99%,50%,.2)`,x.fillRect(i+i%s*99*C(i/s-t)-1e3,i+s*S(i+t)-3*s,s,s)

Mar 5 2017 9:10 PM UTC

}// 110/140

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Psychedelic Flow

u/sfz

No idea what to do with the extra bytes
u/sigveseb

add more colors? :P
u/sfz

K, just updated it with IR and UV
u/iverjo

Color party! :D

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veubeke

remix of d/1893 by u/veubeke

function u(t) {

for(i=1920;a=i--/400;x.fillRect(i,t*70+_*15+i*i%t,1,99))_=C(a+t)*3+C(a-t)*8-8,x.fillStyle=t<6?'#cef':`hsl(${170-t*4},80%,${40-t*2-_+S(_)}%)`

Mar 5 2017 7:51 PM UTC

}// 140/140

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Show more comments…
u/sfz

Pastoral
u/tomkh

cool procedural-gfx in 140 chars !
u/sigveseb

blue skies! grass looks less 3d now though, which I guess is the price for those extra characters.
u/veubeke

I’ve made a second version with different trade-offs. I like both for different reasons. https://www.dwitter.net/d/1911
u/donbright

amazin
u/joeytwiddle

#landscape #scene
u/katkip

#realistic

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tomkh

function u(t) {

for(c.width=i=1920;i--;){for(h=63&i,v=i>>6,e=k=g=30;k--;)r=S(k-t)+1-h/g,d=C(3*k+t)+1-v/g,d=d*d+r*r,e=e>d?(s=k,d):e;x.fillRect(h*g,v*g,s,s)}

Mar 5 2017 7:47 PM UTC

}// 139/140

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u/sfz

What alchemy is this?
u/tomkh

just a brute-force Voronoi Diagram
u/donbright

WOWWWWW
u/magna

How in the ...
u/Xen

131bytes: for(c.width=i=1920;i--;x.fillRect(h*g,v*g,s,s))for(h=63&i,v=i>>6,k=e=g=30;k--;e=e>d?(s=k,d):e)d=C(3*k+t)+v/g,d=d*d+r*(r=S(k-t)+h/g)
u/Xen

131bytes: for(c.width=i=1920;i--;x.fillRect(h*g,v*g,s,s))for(h=63&i,v=i>>6,k=e=g=30;k--;e=e>d?(s=k,d):e)d=C(3*k+t)+v/g,d=d*d+r*(r=S(k-t)+h/g)

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tomkh

function u(t) {

for(c.width=i=1920;i--;){for(g=30,h=63&i,v=i>>6,e=g,k=20;k--;)r=S(k-t)+1-h/g,d=C(3*k+t)+1-v/g,e-=1/(d*d+r*r+.02);x.fillRect(h*g,v*g+99,e,e)}

Mar 5 2017 7:34 PM UTC

}// 140/140

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u/FireFly

Sweet! I need to read up on how to metaballs
u/SpecialAgent

Nice!
u/donbright

great!!!
u/iverjo

Impressive!
u/iverjo

#metaballs
u/vain

This looks so fucking cool! Unbelievable this is produced by only 140 chars of code

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