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[Andreas Fabri <>]

A Facet is a cell and an index. The same facet can be seen
from the other side.

Cell_handle nh = (*fit).first->neighbor((*fit).second);
int ni = nh->index((*fit).first;

Facet nf(nh,ni)

nf describes the same facet seen from the other side,
so the same three points can be seen cw or ccw.

andreas



 wrote:
> well, still no luck here...  I tried your function > 
>
>     int faceIndex = 0;
>     for (Triangulation::Finite_facets_iterator fit = T.finite_facets_begin();
> fit != T.finite_facets_end(); ++fit)
>     {			  
> 	K::Triangle_3 triangle = T.triangle(*fit);
>
>         int index =  Triangulation::vertex_triple_index(faceIndex, 0);
>         Point vertex = triangle.vertex(index);
>         triangles.push_back(Vec3(vertex.x(), vertex.y(), vertex.z()));
>
>         index =  Triangulation::vertex_triple_index(faceIndex, 1);
>         vertex = triangle.vertex(index);
>         triangles.push_back(Vec3(vertex.x(), vertex.y(), vertex.z()));
>
>         index =  Triangulation::vertex_triple_index(faceIndex, 2);
>         vertex = triangle.vertex(index);
>         triangles.push_back(Vec3(vertex.x(), vertex.y(), vertex.z()));
>
>         faceIndex++;
>     }
>
> but now result is that first set of points is ccw and second cw. I dont get 
> it,
> both of my input point sets are cw, why do i get ccw triangles for first set
> and cw for second set?