trunk/src/nodesx.h

/***************************************
 $Header: /home/amb/CVS/routino/src/nodesx.h,v 1.23 2010-03-19 19:47:09 amb Exp $

 A header file for the extended nodes.

 Part of the Routino routing software.
 ******************/ /******************
 This file Copyright 2008-2010 Andrew M. Bishop

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU Affero General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Affero General Public License for more details.

 You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ***************************************/


#ifndef NODESX_H
#define NODESX_H    /*+ To stop multiple inclusions. +*/

#include <stdint.h>

#include "typesx.h"
#include "types.h"


/* Data structures */


/*+ An extended structure used for processing. +*/
struct _NodeX
{
 node_t    id;                  /*+ The node identifier. +*/

 latlong_t latitude;            /*+ The node latitude. +*/
 latlong_t longitude;           /*+ The node longitude. +*/
};

/*+ A structure containing a set of nodes (memory format). +*/
struct _NodesX
{
 char     *filename;            /*+ The name of the temporary file. +*/
 int       fd;                  /*+ The file descriptor of the temporary file. +*/

 uint32_t  xnumber;             /*+ The number of unsorted extended nodes. +*/

 NodeX    *xdata;               /*+ The extended node data (sorted). +*/
 NodeX     cached[2];           /*+ Two cached nodes read from the file in slim mode. +*/

 uint32_t  number;              /*+ How many entries are still useful? +*/

 node_t   *idata;               /*+ The extended node IDs (sorted by ID). +*/

 uint8_t  *super;               /*+ A marker for super nodes (same order sorted nodes). +*/

 Node     *ndata;               /*+ The actual nodes (same order as geographically sorted nodes). +*/

 uint32_t  latbins;             /*+ The number of bins containing latitude. +*/
 uint32_t  lonbins;             /*+ The number of bins containing longitude. +*/

 ll_bin_t  latzero;             /*+ The bin number of the furthest south bin. +*/
 ll_bin_t  lonzero;             /*+ The bin number of the furthest west bin. +*/

 uint32_t  latlonbin;           /*+ A temporary index into the offsets array. +*/

 index_t  *offsets;             /*+ An array of offset to the first node in each bin. +*/
};


/* Functions */

NodesX *NewNodeList(int append);
void FreeNodeList(NodesX *nodesx,int keep);

void SaveNodeList(NodesX *nodesx,const char *filename);

index_t IndexNodeX(NodesX* nodesx,node_t id);
NodeX *LookupNodeX(NodesX* nodesx,index_t index,int position);

void AppendNode(NodesX* nodesx,node_t id,double latitude,double longitude);

void SortNodeList(NodesX *nodesx);

void SortNodeListGeographically(NodesX* nodesx);

void RemoveNonHighwayNodes(NodesX *nodesx,SegmentsX *segmentsx);

void CreateRealNodes(NodesX *nodesx,int iteration);

void IndexNodes(NodesX *nodesx,SegmentsX *segmentsx);


#endif /* NODESX_H */
1	/***************************************
2	$Header: /home/amb/CVS/routino/src/nodesx.h,v 1.23 2010-03-19 19:47:09 amb Exp $
3
4	A header file for the extended nodes.
5
6	Part of the Routino routing software.
7	****************/ /****************
8	This file Copyright 2008-2010 Andrew M. Bishop
9
10	This program is free software: you can redistribute it and/or modify
11	it under the terms of the GNU Affero General Public License as published by
12	the Free Software Foundation, either version 3 of the License, or
13	(at your option) any later version.
14
15	This program is distributed in the hope that it will be useful,
16	but WITHOUT ANY WARRANTY; without even the implied warranty of
17	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18	GNU Affero General Public License for more details.
19
20	You should have received a copy of the GNU Affero General Public License
21	along with this program. If not, see <http://www.gnu.org/licenses/>.
22	***************************************/
23
24
25	#ifndef NODESX_H
26	#define NODESX_H /+ To stop multiple inclusions. +/
27
28	#include <stdint.h>
29
30	#include "typesx.h"
31	#include "types.h"
32
33
34	/* Data structures */
35
36
37	/+ An extended structure used for processing. +/
38	struct _NodeX
39	{
40	node_t id; /+ The node identifier. +/
41
42	latlong_t latitude; /+ The node latitude. +/
43	latlong_t longitude; /+ The node longitude. +/
44	};
45
46	/+ A structure containing a set of nodes (memory format). +/
47	struct _NodesX
48	{
49	char filename; /+ The name of the temporary file. +*/
50	int fd; /+ The file descriptor of the temporary file. +/
51
52	uint32_t xnumber; /+ The number of unsorted extended nodes. +/
53
54	NodeX xdata; /+ The extended node data (sorted). +*/
55	NodeX cached[2]; /+ Two cached nodes read from the file in slim mode. +/
56
57	uint32_t number; /+ How many entries are still useful? +/
58
59	node_t idata; /+ The extended node IDs (sorted by ID). +*/
60
61	uint8_t super; /+ A marker for super nodes (same order sorted nodes). +*/
62
63	Node ndata; /+ The actual nodes (same order as geographically sorted nodes). +*/
64
65	uint32_t latbins; /+ The number of bins containing latitude. +/
66	uint32_t lonbins; /+ The number of bins containing longitude. +/
67
68	ll_bin_t latzero; /+ The bin number of the furthest south bin. +/
69	ll_bin_t lonzero; /+ The bin number of the furthest west bin. +/
70
71	uint32_t latlonbin; /+ A temporary index into the offsets array. +/
72
73	index_t offsets; /+ An array of offset to the first node in each bin. +*/
74	};
75
76
77	/* Functions */
78
79	NodesX *NewNodeList(int append);
80	void FreeNodeList(NodesX *nodesx,int keep);
81
82	void SaveNodeList(NodesX nodesx,const char filename);
83
84	index_t IndexNodeX(NodesX* nodesx,node_t id);
85	NodeX LookupNodeX(NodesX nodesx,index_t index,int position);
86
87	void AppendNode(NodesX* nodesx,node_t id,double latitude,double longitude);
88
89	void SortNodeList(NodesX *nodesx);
90
91	void SortNodeListGeographically(NodesX* nodesx);
92
93	void RemoveNonHighwayNodes(NodesX nodesx,SegmentsX segmentsx);
94
95	void CreateRealNodes(NodesX *nodesx,int iteration);
96
97	void IndexNodes(NodesX nodesx,SegmentsX segmentsx);
98
99
100	#endif /* NODESX_H */