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[rcasero <>]

On 5 August 2013 15:49, Sebastien Loriot (GeometryFactory) [via cgal-discuss] <[hidden email]> wrote:

On 08/05/2013 04:33 PM, rcasero wrote:

>
> (As a side note, I haven't noticed a speed improvement with the 400,000
> point example).

for the location or the insertion?

For the CgalAlphaShape3.cpp function overall, which reads the list of points from Matlab, then builds the Delaunay triangulation, then the alpha shape, then extracts the triangulation for a particular alpha value (~48 sec on my machine all together).

Checking the documentation, it seems that it'll be faster using a Fixed_alpha_shape_3 for a single value of alpha.

I have modified the function adding

typedef CGAL::Fixed_alpha_shape_3<Delaunay>          Fixed_alpha_shape_3;

...

  Fixed_alpha_shape_3 as2(delaunay, 0.0);

(I'm not doing anything to as2 so far, only trying to create the object).

But there's a compilation error "has no member named ‘is_on_chull’". Is this a bug like before?

Full error attached.

Best regards,

Ramon.

--
Dr. Ramón Casero Cañas

Oxford e-Research Centre (OeRC)
University of Oxford
7 Keble Rd
Oxford OX1 3QG

tlf     +44 (0) 1865 610739
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