Dweets awesomed by u/timothytomato

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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Current theme challenge: #Food

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p01

remix of d/7215 by u/jylikangas

function u(t) {

for(c.width=i=W=99;i--;)for(j=0;j++<W;x.fillRect(i,j,1,~z))x.fillStyle=R(z=((d=700/j)*i/W+C(t)&d+t&7)*W/d,z*4,W);x.fillText('🐑',-9*C(t),40)

Mar 14 2018 10:10 PM UTC

}// 139/140

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Tuulian Minecraft: Sheep edition

u/jylikangas

Tuulia approves! :) Thanks!
u/sigveseb

:D:D:D
u/iverjo

#minecraft
u/alien

How does this work omg!!
u/Conjuror

love it and it is cool

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DirtyDan

function u(t) {

q=540
c.width+=0
for(i=0;i++<q;)b=i%2==0?C(t*2):S(t),
x.lineTo(960+b*q*C(a=i/q*44/7+b),q+b*q*S(a+b))
x.stroke()

Mar 13 2018 2:21 AM UTC

}// 111/140

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yonatan

function u(t) {

for(i=j=c.width=198;i--;)for(X=i-99,Y=20;Y++<120;)h=S(X/Y*5)*S(Y/9-t*9),x.fillStyle=R(128-h*99),x.fillRect(i,(Y+h*29)*Y/j,Y/j,199)

Mar 9 2018 3:14 AM UTC

}// 130/140

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half-assed floor marcher

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u/joeytwiddle

looks very nice
u/aleamb

great!
u/magna

Looks like marching half-asses
u/yonatan

Good point! I'll pretend I was going for that
u/iverjo

Very nice!
u/joeytwiddle

#renderer #raytracing #raymarching

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sawaxon

function u(t) {

for(i=0;i<255;i++){x.fillStyle='hsl('+Math.round(S(t)*255)+',100%,50%)'
x.fillRect(700+S(t*200)*i*50,500+C(t*2000)*i*50,i*(i/5),i)}

Mar 8 2018 7:32 PM UTC

}// 131/140

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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 :)

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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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akm

remix of d/7151 by u/prplz

function u(t) {

for(c.width|=i=102,x.scale(20,20),t*=3;i--;)for(j=64;j--;)if((i^j)&4)x.fillRect(i+S(t+j),j+S(t+i),.5,.5)

Mar 4 2018 5:04 AM UTC

}// 104/140

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u/kipkat

#ai

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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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jylikangas

function u(t) {

c.width=W=800;for(o=9;o--;)for(i=-39;i<39;)for(j=0,X=i++;j<300;j+=45,X/=.8)x.fillRect(o*99+X*S(o+t),99+99*C(o)+Math.atan(i*i/90)*99+j,7,i/7)

Feb 26 2018 6:12 AM UTC

}// 140/140

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Dancing forest. :)

u/lionleaf

Nice! Potential for a great christmas tree when that time comes :D
u/iverjo

#trees

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AnnanFay

remix of d/7047 by u/BuRRak

function u(t) {

throw p+=(f%4*4-4)/(f++*f++*f)};{p=3,f=2

Feb 25 2018 7:01 AM UTC

}// 40/140

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Golfing u/BuRRak π calculation using Nilakantha's series

u/AnnanFay

Alternatives are: 33 chars using Wallis product but *very* long time to converge. 24 chars using Newton-Raphson if sin & cos allowed.
u/BuRRak

Mind = blown
u/iverjo

#pi

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jellyedwards

function u(t) {

c.width=w=600;for(s=j=80;j<330;j+=4){x.beginPath();for(h=i=200;i;i-=5){d=(i-w/6)/38;x.lineTo(h+i,j-(s/=.9)%w/t*Math.exp(-d*d))}x.stroke()}

Feb 20 2018 8:48 PM UTC

}// 138/140

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unknown pleasures

u/joeytwiddle

Nice! Dwitter album covert art d/2108
u/jellyedwards

@joeytwiddle yours looks much more like it! I had a few other versions with fBm and fill etc. but couldn't get them under 140 chars!

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