POV-Ray : Newsgroups : povray.pov4.discussion.general : Mesh2 option for isosurface : Re: Mesh2 option for isosurface Server Time
9 May 2024 00:28:22 EDT (-0400)
  Re: Mesh2 option for isosurface  
From: Nicolas Alvarez
Date: 22 Nov 2007 08:25:10
Message: <47458336$1@news.povray.org>

> Isosurfaces are slow to render sometimes.
> 
> What would be good is if there was an option to render them as a mesh 
> with a set detail level.
> 
> Something like
> 
> isosurface
> {
>  blah
>  blah
>  blah
>  render_mesh 20,10,20
> }
> 
> Internally the parser would define a 20x10x20 array of points within the 
> bounding box of the isosurface, and calculate the isosurface value at 
> each point.  Then an algorithm like marching cubes would be used to 
> generate a mesh2 object to be rendered instead of the actual isosurface 
> object.
> 
> This could be used for fast previews or even final renders if the speed 
> was good with large array sizes.
> 
> Comments?
> 

That's only useful if you can save the mesh and use it for other 
renders. Some people have shown that generating such a mesh can take as 
long as rendering the isosurface directly. However once you have the 
mesh, you can re-render it a lot faster.


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