CGAL users discussion list

["Laurent Rineau (GeometryFactory)" <>]

On Monday 30 March 2009 14:37:21 naresh wrote:
> Hi
>
> But how can save my points in to .inr file ?

No. That is almost the same non-sense as wanting to store vegetables in a flash memory card: a .inr (Inrimage) file is a 3D image. All what it can store is a 3D homogenous array of values (integers, floats), that encodes a 3D image (like JPEG files encode 2D images). You cannot save points in such a file.

Mariette Yvinec gave you the right hint: you need a reconstruction algorithm (that constructs a surface from a pointset). In CGAL-3.4, you can have a look at the 3D alpha shapes:
http://www.cgal.org/Manual/3.4/doc_html/cgal_manual/packages.html#Pkg:AlphaShapes3

But there exist better reconstruction algorithms, that are not yet in CGAL (there are new algorithms implementations targetting CGAL-3.5).

--
Laurent Rineau, PhD
Engineer at GeometryFactory
http://www.geometryfactory.com/