Dweets by u/BackendForth

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: #Opposites

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BackendForth

function u(t) {

c.width=1920
for(i=0;i<1720;i+=16){x.beginPath()
s=t%8*39+i/9-222
x.arc(i,99+i/3+99*S(i/99+t/9),i/9*(1+Math.pow(1.01,-s*s)),0,7)
x.stroke()}

Jan 4 2018 3:14 PM UTC

}// 140/140

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u/joeytwiddle

Gulp!
u/Xen

snake done gone eaten!
u/iverjo

4 characters shorter: c.width+=0;for(i=0;i<1720;i+=16)x.beginPath(),s=t%8*39+i/9-222,x.arc(i,99+i/3+99*S(i/99+t/9),i/9*(1+Math.pow(1.01,-s*s)),0,7),x.stroke()
u/codeslaw

Reminds me of my first dweet! d/2083
u/joeytwiddle

#worm

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BackendForth

function u(t) {

c.width=1920
for(i=0;i<1920;i+=4)
{s=i/99-t*4%27+5
w=Math.pow(2,-s*s)*99+9
x.fillRect(i,540-w/2+S(i/43)*9+(i>960?i/2-480:0)*(i%8?1:-1),8,w)}

Jan 4 2018 1:11 AM UTC

}// 140/140

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Show more comments…
u/justinwzig

This rocks
u/magna

Awesome!
u/lurifax

Smooth!
u/sigveseb

Niiice
u/jbl

beautiful!
u/Bugsy

Golfed and slightly cleaned at https://www.dwitter.net/d/5543. Have fun with the extra characters!
u/Bugsy

(cleaned is referring to some slight blockiness on the right side of the animation, not the code. My code is much uglier :P)
u/BackendForth

Neat! TIL Javascript accepts python notation for exponents.
u/ETHproductions

Golfed even further at https://www.dwitter.net/d/5601. Now there's 30 extra chars to play around with :-)
u/mohd-akram

I was expecting it to open like a zip :D
u/lionleaf

#feynman #feynman_diagram #organic #quantum_field_theory
u/lionleaf

#zip
u/rodrigo.siqueira

Neural sign propagating through axon terminals
u/rodrigo.siqueira

#neural
u/rodrigo.siqueira

#neuralnetwork

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BackendForth

function u(t) {

for(i=0;i<9;i++){x.strokeStyle=R(0,0,t*99%256)
x.beginPath()
r=79+2<<t%4
w=i*.7+t/9
x.arc(960+r*S(w),540+r*C(w),99+99*C(t),0,7)
x.stroke()}

Jan 3 2018 2:51 PM UTC

}// 139/140

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u/eviltoad

nice nice! You can use r and t to make the color more dynamic... I like it, gonna remix
u/eviltoad

doh! no, actually, you can't. but i and t, those you can use...
u/Qwitter

Wow! this is amazing!

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BackendForth

function u(t) {

for(i=0;i<99*t;i++){e=new Array(270)
for(j=0;j<270;j++)
{e[j]=i?(d[j]^d[j-1])|(!d[j+1]&d[j]&d[j-1]):!j
e[j]?x.fillRect(i*4,j*4,4,4):0}d=e}

Jan 3 2018 12:35 AM UTC

}// 138/140

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u/sigveseb

Rule 110?

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BackendForth

function u(t) {

v=Math.random
w=256
x.fillStyle=R(v()*w,v()*w,v()*w)
x.fillRect(0,540+S(t)*t*9,9,9)
p=C(t)*C(t)
x.drawImage(c,8+p*8,4.5+S(t)*4.5,1904,1071)

Jan 2 2018 5:33 AM UTC

}// 139/140

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u/quuxman

alien warp crystal
u/johnp

holy shit

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BackendForth

function u(t) {

x.fillStyle=R(t,S(t*3.14)*206,S(t*6.8)*206)
x.fillRect((t-t%1)%10*192,792,192,288)
x.drawImage(c,0,0,1408,792)
x.drawImage(c,512,0,1408,792)

Jan 2 2018 4:35 AM UTC

}// 140/140

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u/iverjo

Old school vibes

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BackendForth

function u(t) {

v=Math.random
x.fillStyle=R(t*v()*v()%256,t*v()*v()*3%256,t*v()*v()*4%256)
x.fillRect(v()*1920,v()*1080,1,1)
x.drawImage(c,8,4.5,1904,1071)

Jan 2 2018 3:32 AM UTC

}// 139/140

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u/joeytwiddle

We are not going to warp, Captain, warp is coming to us!

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BackendForth

function u(t) {

v=Math.random
if(t%1<.1){x.fillStyle=R(t*9%256,t*5%256,t*2%256)
x.fillRect(v()*1920,v()*1080,99,99)}x.drawImage(c,v()*960,v()*540,960,540)

Jan 2 2018 2:58 AM UTC

}// 138/140

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u/Xen

love it! ;-)

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BackendForth

function u(t) {

c.width=1920
v=(p,q,w,i)=>{m=p+C(w)*i
n=q+S(w)*i
x.fillRect(m,n,4,5)
if(i>1){v(m,n,w+t*.91,i/2)
v(m,n,w-t*.7,i/2)}}
v(480,540,0,480)

Jan 2 2018 12:24 AM UTC

}// 132/140

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u/iverjo

#recursive

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BackendForth

function u(t) {

c.width=1920
for(i=0;i<399;i++){
a=C(t+i/8)*i*3
b=S(t+i/8)*i*2
x.fillRect(960+a,540+b,b/9+9,59)
x.stroke()
}

Jan 1 2018 5:01 PM UTC

}// 108/140

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