POV-Ray : Newsgroups : povray.general : mesh2 in csg : Re: mesh2 in csg Server Time
9 Aug 2024 21:14:05 EDT (-0400)
  Re: mesh2 in csg  
From: ryan constantine
Date: 7 May 2000 16:15:55
Message: <3915CFAB.B8D2FC52@yahoo.com>
one problem.  hopefully there is a solution.  the mesh came out solid
just perfect, but there are artifacts of the cube i cut the mesh out of
under my object.  does this indicate holes in my mesh?  i can't see
any.  or does it mean that i have some normals flipped around?  the
artifacts are what's left if you take an inverse shadow projected
directly below the object onto a plane.  if you need a pic, i can post
one in the images group.  thanks again.

Nathan Kopp wrote:
> 
> Try adding something like this to your mesh object:
> inside_vector <0, 0, 1>
> 
> In MegaPov, this will instruct MegaPov to treat this as a solid mesh.  Be
> aware that the algorithm that computes mesh insidedness is flawed, but it
> does work most of the time.  Read the docs (section 5.3) for more
> information.
> 
> -Nathan
> 
> ryan constantine <rco### [at] yahoocom> wrote...
> > what i want to do is intersect a mesh2 object with a box (hoping it will
> > make a solid).  is it possible?  i'm using megapov 0.4, but i still get
> > an error telling me "patch objects not allowed in intersection".  it
> > does look right, but when i cut a piece out to see if it is solid, a
> > hole in the surface is cut, and the inside is the color of the
> > background.  does that mean that only the outer surface of a mesh2
> > object is visible?  TIA


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