Re: [Vxl-users] Using functions with vectors of pointers

[Ian Scott <ian.m.scott@st...>]

David Doria wrote:
> Say I have a
> vector<vgl_point_3d<double> > Points;
> 
> I can do this:
> vgl_box_3d<double> BB;
> vgl_box_3d_bounds(Points.begin(), Points.end(), BB);
> 
> But what if I have
> vector<vgl_poitn_3d<double> *> Points;
> 
> Do I have to dereference every element and store them all in a
> vector<vgl_point_3d<double> > before calling this function?

Or write your own version of vgl_box_3d_bounds - it's trivial.
Or write an iterator that dereferences the pointer.

Ian.

[Vxl-users] Using functions with vectors of pointers

[David Doria <daviddoria@gm...>]

Say I have a
vector<vgl_point_3d<double> > Points;

I can do this:
vgl_box_3d<double> BB;
vgl_box_3d_bounds(Points.begin(), Points.end(), BB);

But what if I have
vector<vgl_poitn_3d<double> *> Points;

Do I have to dereference every element and store them all in a
vector<vgl_point_3d<double> > before calling this function?

-- 
Thanks,

David

Re: [Vxl-users] Using functions with vectors of pointers

[Ian Scott <ian.m.scott@st...>]

David Doria wrote:
> Say I have a
> vector<vgl_point_3d<double> > Points;
> 
> I can do this:
> vgl_box_3d<double> BB;
> vgl_box_3d_bounds(Points.begin(), Points.end(), BB);
> 
> But what if I have
> vector<vgl_poitn_3d<double> *> Points;
> 
> Do I have to dereference every element and store them all in a
> vector<vgl_point_3d<double> > before calling this function?

Or write your own version of vgl_box_3d_bounds - it's trivial.
Or write an iterator that dereferences the pointer.

Ian.