Can someone provide or point to a good Pov-ray model of a heart?

No, I don't mean a human heart. :)

I would actualy like a 3D model of a typical Valentine's day heart.
I guess if I can't find one, I can do a crude one via a prism, but
I would much rather have a rounded "bubbly" looking one with a pointed
bottom.

EG (assuming you are reading this post with a fixed width font...)
 _  _
/ \/ \
\    /
 \  /
  \/

Plus I don't know if there exists an (cubic?) equation that
would give the surface of such a heart shape when ploted in
xyz space...

Thanks.
-- 
Dwaine Gonyier
dwa### [at] mindspringcom

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Dwaine Gonyier wrote:
> 
> Can someone provide or point to a good Pov-ray model of a heart?

This is a bit buggy and might produce a line of artifacts when viewed
at certain angles but it is a classic Valentine's Day heart shape.

#declare Heart =
   poly { 6,<
   8.0,0,0,0,12,0,0,12,0,-12,0,0,0,0,0,0,0,0,0,0,6,0,0,12,0,-12,0,0,0,0,6,
  -0.1,-12,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,3,0,-3,0,0,
   0.0,0,3,-1,-6,0,3,0,0,0,0,0,0,1,0,-3,0,3,0,-1>
   }

> Plus I don't know if there exists an (cubic?) equation that
> would give the surface of such a heart shape when ploted in
> xyz space...

6th order polynominal

cub(2*sqr(x)+sqr(y)+sqr(z)-1) - (0.1*sqr(x)+sqr(y))*cub(z)   


-- 
Ken Tyler

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On Tue, 12 Feb 2002 21:33:51 -0800, Ken <tyl### [at] pacbellnet> wrote:
> This is a bit buggy and might produce a line of artifacts when viewed
> at certain angles but it is a classic Valentine's Day heart shape.
>
> #declare Heart =

This is also available as isosurface function in standard distribution of 3.5

ABX

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"Dwaine Gonyier" <dwa### [at] mindspringcom> wrote in message
news:3c69ed6c@news.povray.org...
> Can someone provide or point to a good Pov-ray model of a heart?
>

If
http://www.tomandlu.co.uk/webres/raytracing/gallery/pics/hearts.jpg
is any good for you, the source is at:
http://www.tomandlu.co.uk/webres/raytracing/gallery/hearts.pov

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This seems to work quite nicely.

I did see some artifacts (FYI, I am using pov-ray 3.1g for windows), but they
seem to go away if I throw enough anti-aliasing at the render.

Thanks to you and everyone else that responded.



"Ken" <tyl### [at] pacbellnet> wrote in message news:3C69FABF.17A46075@pacbell.net...
> 
> 
> Dwaine Gonyier wrote:
> > 
> > Can someone provide or point to a good Pov-ray model of a heart?
> 
> This is a bit buggy and might produce a line of artifacts when viewed
> at certain angles but it is a classic Valentine's Day heart shape.
> 
> #declare Heart =
>    poly { 6,<
>    8.0,0,0,0,12,0,0,12,0,-12,0,0,0,0,0,0,0,0,0,0,6,0,0,12,0,-12,0,0,0,0,6,
>   -0.1,-12,0,6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,3,0,-3,0,0,
>    0.0,0,3,-1,-6,0,3,0,0,0,0,0,0,1,0,-3,0,3,0,-1>
>    }
> 
> > Plus I don't know if there exists an (cubic?) equation that
> > would give the surface of such a heart shape when ploted in
> > xyz space...
> 
> 6th order polynominal
> 
> cub(2*sqr(x)+sqr(y)+sqr(z)-1) - (0.1*sqr(x)+sqr(y))*cub(z)   
> 
> 
> -- 
> Ken Tyler

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