On Wed, Jul 14, 2010 at 3:16 PM, Jeremiah Willcock
On Wed, 14 Jul 2010, W.P. McNeill wrote:
I verified the documentation changes for grid graph indexing calls and A*
visitors. Looks good. Now doing edge weights with a static_property_map<>.
OK.
I've duplicated relevant information from the README at the top of
maze.cpp, so README doesn't need to be included in the Boost examples.
I found that I have to implement my own vertex index map, though I'm not sure exactly why. If I remove all my vertex index map code and call A* with the default map like so:
astar_search(m_barrier_grid, source(), heuristic, boost::weight_map(weight). predecessor_map(pred_pmap). distance_map(dist_pmap). visitor(visitor) );
I get the following error:
(snip)
That is a bug in astar_search(). Please try with the latest Boost trunk and see if it works. I also added named parameters to astar_search_no_init().
I tried building with the default index map again against the Boost tree at version 64026 and got the same error as before:
graph_traits.hpp:226: error: no type named ‘vertex_property_type’ in ‘class grid’ I noticed that the documentation for the the vertex_index_map parameter says that the graph must have an internal vertex_index property. Could this be the problem? If I try to add the following line to a working build: typedef grid::vertex_index grid_vertex_index; I get this error: g++ -g -I/src/boost-trunk -Wall -Werror -O3 -c -o astar_maze.o astar_maze.cpp astar_maze.cpp:62: error: ‘vertex_index’ in class ‘grid’ does not name a type
I was surprised by this because I expected the filtered graph to inherit
the grid graph's vertex index map like you describe.
That is what it should do.
-- Jeremiah Willcock _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users