CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

The planes of the facets of the polyhedron are not initialized.
See [1] for example for how to initialize them.

Sebastien.

[1] 
http://doc.cgal.org/latest/Convex_hull_3/Convex_hull_3_2quickhull_3_8cpp-example.html

On 11/22/2016 06:45 AM, SirM2X wrote:
> Given two groups of points A and B, I'd like to compute the distance of all
> the points in B to the convex hull of A. I've done this before, and I know
> that I can leverage AABB trees for this. I thought I knew everything that
> was involved in this computation, but I have a feeling that I don't.
> Below is a short code of what I'm trying to do
>
>
>
> From what I "thought" I knew, I computed the distance of the query point
> with the closest point of the AABB tree using /squared_distance/ function
> (stored in /distToPoint/ in the above snippet). But then, I felt the results
> were off a bit, so I tried computing the query point's distance to the
> closest face. Again I used /squared_distance/ but this time on the face's
> plane (basically computing point/plane distance, stored in /distToFace/
> above.)
>
> If my understanding was correct, the two values had to be equal, but it
> seems that this is not the case and I am super confused as to why :(
>
> Also, I noticed that if I change my kernel from /Simple_cartesian<float>/ to
> (say) /Simple_cartesian<double>/, I'd get nan values instead of distances,
> and again, I have no idea why this is happening.
>
> Any helps is greatly appreciated :)
>
>
>
> --
> View this message in context: 
> http://cgal-discuss.949826.n4.nabble.com/Inconsistent-point-convex-hull-distance-computation-values-tp4662388.html
> Sent from the cgal-discuss mailing list archive at Nabble.com.