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Re: [cgal-discuss] Delaunay refinement of an existing 3D Delaunay Triangulation


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  • From: "Mukherjee, Soham" <>
  • To: "" <>
  • Subject: Re: [cgal-discuss] Delaunay refinement of an existing 3D Delaunay Triangulation
  • Date: Sun, 3 Nov 2019 16:30:19 +0000
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HI Mael,
Thanks for the reply. I have looked into the 3D Mesh Generation package. The
problem is every mesh requires a Mesh_domain. The Mesh_domain must be an
instance of Labeled 3D image Gray, Scale Image or Polyhedron Mesh. But I just
want to input a 3D Delaunay Triangulation in the algorithm. Let me give some
details.
I have a point cloud that I have triangulated using Delaunay 3D
Triangulation. I just want to refine the initial triangulation and then want
to run my own algorithm on top of it. I cannot find a way to feed the 3D
triangulation directly in the refinement algorithms. I don’t know whether it
is possible in the current setup. In particular, I want to know whether there
exists a facility similar to TetGen where it can refine an already existing
3D tetrahedral mesh.
One possible way I can think of is to voxelize my 3D triangulation and
convert it as an image. But sometimes it is kind of an extra step
(voxelizing the triangulation).
Thanks in advance.

> On Nov 3, 2019, at 5:27 AM, Mael
> <>
> wrote:
>
> Hello,
>
> Have you seen the following package:
> https://doc.cgal.org/latest/Mesh_3/index.html#Chapter_3D_Mesh_Generation ?
>
> Mael
>
> On 02/11/2019 22:38, Mukherjee, Soham wrote:
>> Can we refine an existing Delaunay 3D Triangulation (Done by CGAL) using
>> 3D Delaunay Refinement ? If so what is the procedure? I referred to the
>> documentation but the procedure is not trivial.
>>
>> Thanks,
>> Soham
>>
>
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