trunk/src/segmentsx.h

/***************************************
 $Header: /home/amb/CVS/routino/src/segmentsx.h,v 1.19 2009-10-08 19:20:29 amb Exp $

 A header file for the extended segments.

 Part of the Routino routing software.
 ******************/ /******************
 This file Copyright 2008,2009 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 SEGMENTSX_H
#define SEGMENTSX_H    /*+ To stop multiple inclusions. +*/

#include <stdint.h>

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


/* Data structures */


/*+ An extended structure used for processing. +*/
struct _SegmentX
{
 node_t     node1;              /*+ The id of the starting node. +*/
 node_t     node2;              /*+ The id of the finishing node. +*/

 way_t      way;                /*+ The id of the way. +*/

 distance_t distance;           /*+ The distance between the nodes. +*/
};


/*+ A structure containing a set of segments (memory format). +*/
struct _SegmentsX
{
 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. +*/

 SegmentX  *xdata;              /*+ The extended segment data (unsorted). +*/
 SegmentX   cached[2];          /*+ Two cached segments read from the file in slim mode. +*/

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

 node_t   *idata;               /*+ The extended segment data (sorted by node1 then node2). +*/
 index_t  *firstnode;           /*+ The first segment index for each node. +*/

 Segment   *sdata;              /*+ The segment data (same order as n1data). +*/
};


/* Functions */


SegmentsX *NewSegmentList(void);
void FreeSegmentList(SegmentsX *segmentsx);

void SaveSegmentList(SegmentsX *segmentsx,const char *filename);

SegmentX *LookupSegmentX(SegmentsX* segmentsx,index_t index,int position);

index_t IndexFirstSegmentX(SegmentsX* segmentsx,node_t node);

index_t IndexNextSegmentX(SegmentsX* segmentsx,index_t segindex,index_t nodeindex);

void AppendSegment(SegmentsX* segmentsx,way_t way,node_t node1,node_t node2,distance_t distance);

void SortSegmentList(SegmentsX* segmentsx);

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

void UpdateSegments(SegmentsX *segmentsx,NodesX *nodesx,WaysX *waysx);

void RotateSegments(SegmentsX* segmentsx);

void DeduplicateSegments(SegmentsX* segmentsx,NodesX *nodesx,WaysX *waysx);

void CreateRealSegments(SegmentsX *segmentsx,WaysX *waysx);

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


#endif /* SEGMENTSX_H */
1	/***************************************
2	$Header: /home/amb/CVS/routino/src/segmentsx.h,v 1.19 2009-10-08 19:20:29 amb Exp $
3
4	A header file for the extended segments.
5
6	Part of the Routino routing software.
7	****************/ /****************
8	This file Copyright 2008,2009 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 SEGMENTSX_H
26	#define SEGMENTSX_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 _SegmentX
39	{
40	node_t node1; /+ The id of the starting node. +/
41	node_t node2; /+ The id of the finishing node. +/
42
43	way_t way; /+ The id of the way. +/
44
45	distance_t distance; /+ The distance between the nodes. +/
46	};
47
48
49	/+ A structure containing a set of segments (memory format). +/
50	struct _SegmentsX
51	{
52	char filename; /+ The name of the temporary file. +*/
53	int fd; /+ The file descriptor of the temporary file. +/
54
55	uint32_t xnumber; /+ The number of unsorted extended nodes. +/
56
57	SegmentX xdata; /+ The extended segment data (unsorted). +*/
58	SegmentX cached[2]; /+ Two cached segments read from the file in slim mode. +/
59
60	uint32_t number; /+ How many entries are still useful? +/
61
62	node_t idata; /+ The extended segment data (sorted by node1 then node2). +*/
63	index_t firstnode; /+ The first segment index for each node. +*/
64
65	Segment sdata; /+ The segment data (same order as n1data). +*/
66	};
67
68
69	/* Functions */
70
71
72	SegmentsX *NewSegmentList(void);
73	void FreeSegmentList(SegmentsX *segmentsx);
74
75	void SaveSegmentList(SegmentsX segmentsx,const char filename);
76
77	SegmentX LookupSegmentX(SegmentsX segmentsx,index_t index,int position);
78
79	index_t IndexFirstSegmentX(SegmentsX* segmentsx,node_t node);
80
81	index_t IndexNextSegmentX(SegmentsX* segmentsx,index_t segindex,index_t nodeindex);
82
83	void AppendSegment(SegmentsX* segmentsx,way_t way,node_t node1,node_t node2,distance_t distance);
84
85	void SortSegmentList(SegmentsX* segmentsx);
86
87	void RemoveBadSegments(NodesX nodesx,SegmentsX segmentsx);
88
89	void UpdateSegments(SegmentsX segmentsx,NodesX nodesx,WaysX *waysx);
90
91	void RotateSegments(SegmentsX* segmentsx);
92
93	void DeduplicateSegments(SegmentsX* segmentsx,NodesX nodesx,WaysX waysx);
94
95	void CreateRealSegments(SegmentsX segmentsx,WaysX waysx);
96
97	void IndexSegments(SegmentsX* segmentsx,NodesX *nodesx);
98
99
100	#endif /* SEGMENTSX_H */