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Re: [cgal-discuss] 3D surfaces of buildings


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  • From: Joe C <>
  • To:
  • Subject: Re: [cgal-discuss] 3D surfaces of buildings
  • Date: Fri, 9 Apr 2010 08:50:08 -0700
  • Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=f392nY/y4tpYEOkyK+7HaPfo1Rt6Wbu3XXYaTf3eoMVTrHhuxwOc7PlNnI9wgV+hoT R+qmjS5od3mco/wm234m9y/JfDRItc9AcH+S9e+HwPKHh2WsfojIp/Mny7KPgqMg+uds 3t80IYPVAaEuU/aKps40CRYotKhGvFqjZqgFI=

You can convert your building to Nef_polyhedron (CGAL's solid) and then check if a point is inside it.

Joe

On Tue, Mar 23, 2010 at 7:46 AM, Mariette Yvinec <> wrote:
Look at CGAL 3D mesh generation package ?


wrote:
My name is Mohamed Salim, a researcher in Meteorological Institute of Hamburg
University. I would like to consult you about one problem.

Currently, we are simulating the boundary layer of Hamburg city using CFD code
and I need to produce the required mesh. The problem is that I have the data of
the buildings in the form of STL (triangular surface with its 3D three points
and its unit vector). My question is: "Is there any program which can produce a
solid 3D shape from the triangular surfaces (tetrahedral, hexahedral, ..etc?"
Or is there a method that I can check if a point lies inside these surfaces
(i.e., inside the building)?
 

--
Mariette Yvinec
Geometrica project team
INRIA  Sophia-Antipolis  




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