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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