Dweets awesomed by u/farter

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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justguy

function u(t) {

c.width=w=1000;π=Math.PI/2;λ=0;r=w/4;for(i=-π;i<π;i+=1/r){λ+=.1;x.lineTo(C(i)*S(λ*t)*r+w/2,(C(t)*S(i)-S(t)*C(i)*C(λ*t))*r+r)}x.stroke()

Jan 26 2018 5:32 AM UTC

}// 135/140

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u/aleamb

Pretty dweet!
u/Xen

love it!

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Xen

remix of d/205 by u/iverjo

function u(t) {

c.width=2e3;n=899;for(i=2;i<n;i+=2)s=2/(9.1-(t+i/29*C(t/4))%9),x.beginPath(),j=i*.69+t,x.lineWidth=s*s*4,x.arc(n,520,s*99,j,j+1),x.stroke()

Nov 14 2017 7:59 PM UTC

}// 139/140

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Give it 30 seconds ;-)

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New_Core

remix of d/3512 by u/New_Core

function u(t) {

for(c.width|=i=50;i--;x.fillRect(1e3+i*20*S(t+i/99)-i*25,500+i*20*C(t+i/99)-i*25,x.shadowBlur=b=i*50,b))x.shadowColor="#f93",x.rotate(49)

Nov 13 2017 9:29 PM UTC

}// 137/140

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u/magna

Wow!
u/lionleaf

Amazing colours
u/artfarnaa

Spooky cool

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Xen

remix of d/1201 by u/bligglenuber

function u(t) {

x.fillStyle=`hsl(${(t*=5e2)/2},80%,50%)`
x.globalCompositeOperation='difference'
x.fillRect(t%1920,t%1080,9,9)
x.drawImage(c,0,9)

Nov 3 2017 8:09 PM UTC

}// 129/140

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it's raining rainbow sierpinski triangles!

u/zanella

I just did https://www.dwitter.net/d/4677, but yours kicked the hell out of mine. :D
u/Xen

thank you :-)
u/f8f82804

#rainbow #fractal

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mmastrac

function u(t) {

t?0:M=[];for(f=w=62,i=500;i--;)M[i]=x.fillRect(w*(i>>4),w*(i%16),w,w,x.fillStyle=R(e=M[i]))||t?f&&e>(z=M[i+1])?(M[f--,i+1]=e,z):e:i**6%256

Oct 30 2017 6:10 PM UTC

}// 138/140

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Bubble sort visualizer

u/sigveseb

really nice
u/lionleaf

Brilliant
u/katkip

Awesome

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farter

function u(t) {

P=(a,b,c,d)=>(x.fillStyle=R(c,c,c),x.fillRect(a*d,b*d,-d,-d));for(i=26;i--;)for(j=16;j--;)P(i+C(t),j+S(t),C(S(i+C(t)*2)+S(j+S(t)*2))*255,80)

Mar 19 2017 6:21 PM UTC

}// 140/140

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u/magna

Nice!

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donbright

remix of d/2033 by u/recursive

function u(t) {

t||(a=0)
x.drawImage(c,C(a+=S(t/155*C(t)))*20,S(a)*20)
x.fillRect(1e3,500,20,20);
x.fillStyle=R(128*S(a)+128,(C(a)*256)%256,(250-a)%250)

Mar 11 2017 1:17 AM UTC

}// 137/140

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actually a remix of two... recursive's 2033 and https://www.dwitter.net/d/2008 by RavenWorks

u/sfz

wowweewowowo
u/RavenWorks

this is great!!
u/recursive

Whoa, you went in a totally different direction with this.

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farter

function u(t) {

W=(a,w,d)=>(r=S(t/4)/2.1+.5,w>99&&W(a,w*r,d*.95)&W(a+w*r,w-w*r,d*.95),x.fillStyle=R(d),x.fillRect(a,0,4,d*4)),c.width|=0;W(-4,1924,255);

Mar 10 2017 1:29 PM UTC

}// 136/140

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u/donbright

fascinating

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farter

function u(t) {

t?(p=a[a[0]++],o=p>>6&255,p&1&&(o=a[o]),d=p>>4&3,p&2&&(d=a[d]),n=a[d],a[d]=[o,n+o,n-o][p>>2&3]):a=[4,0,1,0,101,177,121,209,256]//watch a[1]

Mar 10 2017 11:53 AM UTC

}// 139/140

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console.log(a[1]), something is running inside this "little computer"

u/farter

but sorry for no use of canvas lol
u/farter

console doesn't work now, instead, append this: ;c.width=150;x.fillText(a[1],0,10)

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farter

function u(t) {

c[p="parentNode"][p].style.overflowY="scroll";c.width=150;a=b=1;for(i=0;i++<108;)x.fillText(a,8,i*10),a=(b+=a)-a;x.fillRect(1,t*99%1080,4,4)

Mar 9 2017 12:03 PM UTC

}// 140/140

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playing with DOM (no

u/hg

Nice DOM tricks.

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