| 1 | /* |
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| 2 | * Shooting* shortest path algorithm for PostgreSQL |
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| 3 | * |
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| 4 | * Copyright (c) 2007 Anton A. Patrushev, Orkney, Inc. |
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| 5 | * |
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| 6 | * This program is free software; you can redistribute it and/or modify |
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| 7 | * it under the terms of the GNU General Public License as published by |
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| 8 | * the Free Software Foundation; either version 2 of the License, or |
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| 9 | * (at your option) any later version. |
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| 10 | * |
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| 11 | * This program is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | * GNU General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU General Public License |
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| 17 | * along with this program; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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| 19 | * |
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| 20 | */ |
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| 21 | |
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| 22 | #define _SHOOTING_STAR_H |
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| 23 | #define MAX_RULE_LENGTH 5 |
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| 24 | |
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| 25 | #define MAX_NODES 1000000 |
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| 26 | #define MAX_COST 100000 |
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| 27 | |
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| 28 | #include "postgres.h" |
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| 29 | |
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| 30 | typedef struct edge_shooting_star |
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| 31 | { |
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| 32 | int id; |
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| 33 | int source; |
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| 34 | int target; |
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| 35 | float8 cost; |
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| 36 | float8 reverse_cost; |
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| 37 | float8 s_x; |
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| 38 | float8 s_y; |
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| 39 | float8 t_x; |
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| 40 | float8 t_y; |
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| 41 | float8 to_cost; |
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| 42 | int through_id[MAX_RULE_LENGTH]; |
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| 43 | int rule[MAX_RULE_LENGTH]; |
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| 44 | } edge_shooting_star_t; |
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| 45 | |
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| 46 | //I had to redeclare this. I couldn't include dijkstra.h 'cause |
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| 47 | //struct edge conflicts with function adjacency_list::edge() |
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| 48 | typedef struct path_element |
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| 49 | { |
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| 50 | int vertex_id; |
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| 51 | int edge_id; |
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| 52 | float8 cost; |
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| 53 | } path_element_t; |
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| 54 | |
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| 55 | #ifdef __cplusplus |
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| 56 | extern "C" |
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| 57 | { |
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| 58 | #endif |
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| 59 | int boost_shooting_star(edge_shooting_star_t *edges, unsigned int count, |
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| 60 | int source_edge_id, int target_edge_id, |
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| 61 | bool directed, bool has_reverse_cost, |
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| 62 | path_element_t **path, int *path_count, char **err_msg, |
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| 63 | int e_max_id); |
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| 64 | #ifdef __cplusplus |
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| 65 | } |
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| 66 | #endif |
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