Re: [Boost-users] astar help

From: bringiton bringiton (kneeride_at_[hidden])
Date: 2007-06-13 11:57:17

Sorry, I was mistaken. distance_heuristic::operator() does get called
in my code.

On 6/14/07, bringiton bringiton <kneeride_at_[hidden]> wrote:
> I have a number of questions RE the astar-cities example.
>
> Why is the distance_heuristic class needed.  Is it used to find the
> weight for a test vertex to the goal vertex?  I put a breakpoint in
> distance_heuristic::operator() and it never gets called.  Is it ever
> used?
>
> astar_search
>      (...
>       distance_heuristic<mygraph_t, cost, location*>
>      ...)
>
> Do I have to define my own or supply an astar_heuristic?  Or can I
> pass a default heuristic?
>
>
> astar_goal_visitor.  Do I need to use this or can I pass a default
> default_astar_visitor?  Are there other ways of reaching a goal
> without throwing an exception?
>
>
> Thanks. Any advice appreciated
>