break.c File Reference

Vedit library - split, break, connect lines. More...

#include <math.h>
#include <grass/vedit.h>

Include dependency graph for break.c:

Go to the source code of this file.

Functions
int	Vedit_split_lines (struct Map_info *Map, struct ilist *List, struct line_pnts *coord, double thresh, struct ilist *List_updated)
	Split selected lines on given position. More...
int	Vedit_connect_lines (struct Map_info *Map, struct ilist *List, double thresh)
	Connect lines in given threshold. More...

Detailed Description

Vedit library - split, break, connect lines.

(C) 2007-2008 by the GRASS Development Team

This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.

Author

Martin Landa <landa.martin gmail.com>

Definition in file break.c.

Function Documentation

int Vedit_connect_lines	(	struct Map_info *	Map,
		struct ilist *	List,
		double	thresh
	)

Connect lines in given threshold.

     \              \
id1   \           ->         \
                            \
id2 ---------           -----+---

If two lines are selected and thresh is -1, no limit is applied.

Parameters

Map	pointer to Map_info
List	list of selected lines
thresh	threshold value

Returns

number of modified lines

-1 on error

Definition at line 155 of file break.c.

References G_debug(), main::GV_LINES, Vect_destroy_list(), Vect_find_line_list(), Vect_get_line_nodes(), Vect_get_node_coor(), Vect_line_alive(), Vect_list_append(), Vect_new_list(), Vect_reset_list(), and y.

Referenced by wxdigit.IVDigit::ConnectLine().

int Vedit_split_lines	(	struct Map_info *	Map,
		struct ilist *	List,
		struct line_pnts *	coord,
		double	thresh,
		struct ilist *	List_updated
	)

Split selected lines on given position.

Parameters

	Map	pointer to Map_info
	List	list of selected lines
	coord	points location
[out]	List_updated	list of rewritten features (or NULL)

Returns

number of modified lines

-1 on error

Definition at line 31 of file break.c.

References G_debug(), main::GV_LINES, l, NULL, dialogs::type, Vect_append_point(), Vect_destroy_cats_struct(), Vect_destroy_line_struct(), Vect_destroy_list(), Vect_line_alive(), Vect_line_distance(), Vect_line_length(), Vect_list_append(), Vect_new_cats_struct(), Vect_new_line_struct(), Vect_new_list(), Vect_read_line(), Vect_reset_line(), Vect_rewrite_line(), Vect_write_line(), and y.

Referenced by wxdigit.IVDigit::SplitLine().