gv.c File Reference

OGSF library - loading and manipulating vector sets (lower level functions) More...

#include <stdio.h>
#include <stdlib.h>
#include <grass/gstypes.h>
#include "gsget.h"

Include dependency graph for gv.c:

Go to the source code of this file.

Macros
#define	FIRST_VECT_ID   20656

Functions
geovect *	gv_get_vect (int id)
	Get vector set. More...
geovect *	gv_get_prev_vect (int id)
	Get previous vector set. More...
int	gv_num_vects (void)
	Get number of loaded vector sets. More...
geovect *	gv_get_last_vect (void)
	Get last loaded vector set. More...
geovect *	gv_get_new_vect (void)
	Allocate memory for new vector set. More...
void	gv_update_drapesurfs (void)
	Update drape surfaces. More...
int	gv_set_defaults (geovect *gv)
	Set attributes of vector set to default values. More...
int	gv_init_vect (geovect *gv)
	Initialize geovect struct. More...
void	gv_delete_vect (int id)
	Delete vector set (unload) More...
int	gv_free_vect (geovect *fv)
	Free allocated memory for geovect struct. More...
void	gv_free_vectmem (geovect *fv)
	Free allocated memory. More...
void	gv_set_drapesurfs (geovect *gv, int *hsurfs, int nsurfs)
	Set drape surfaces for vector set. More...

Detailed Description

OGSF library - loading and manipulating vector sets (lower level functions)

GRASS OpenGL gsurf OGSF Library

(C) 1999-2008 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

Bill Brown USACERL (November 1993)

Doxygenized by Martin Landa (June 2008)

Definition in file gv.c.

Macro Definition Documentation

#define FIRST_VECT_ID   20656

Definition at line 25 of file gv.c.

Referenced by gv_get_new_vect().

Function Documentation

void gv_delete_vect

(

int

id

)

Delete vector set (unload)

Parameters

id	vector set id

Definition at line 230 of file gv.c.

References G_debug(), gv_free_vect(), and gv_get_vect().

Referenced by GV_delete_vector().

int gv_free_vect

(

geovect *

fv

)

Free allocated memory for geovect struct.

Parameters

fv	pointer to geovect struct

Returns

-1 on failure

1 on success

Definition at line 253 of file gv.c.

References G_debug(), G_free(), gv_free_vectmem(), and NULL.

Referenced by gv_delete_vect().

void gv_free_vectmem

(

geovect *

fv

)

Free allocated memory.

Parameters

fv	pointer to geovect struct

Definition at line 301 of file gv.c.

References G_free(), NULL, and sub_Vectmem().

Referenced by gv_free_vect(), and GV_load_vector().

geovect* gv_get_last_vect

(

void

)

Get last loaded vector set.

Returns

pointer to geovect struct

NULL on failure (no vector set available)

Definition at line 98 of file gv.c.

References G_debug(), and NULL.

Referenced by gv_get_new_vect().

geovect* gv_get_new_vect

(

void

)

Allocate memory for new vector set.

Returns

pointer to geovect struct

NULL on failure

Definition at line 119 of file gv.c.

References FIRST_VECT_ID, G_debug(), gv_get_last_vect(), and NULL.

Referenced by GV_new_vector().

geovect* gv_get_prev_vect

(

int

id

)

Get previous vector set.

Parameters

id	vector set id

Returns

pointer to geovect struct

NULL on failure

Definition at line 60 of file gv.c.

References G_debug(), and NULL.

geovect* gv_get_vect

(

int

id

)

Get vector set.

Parameters

id	vector set id

Returns

pointer to geovect struct

NULL on failure

Definition at line 37 of file gv.c.

References G_debug(), and NULL.

Referenced by gv_delete_vect(), GV_draw_fastvect(), GV_draw_vect(), GV_Get_ClientData(), GV_get_trans(), GV_get_vectmode(), GV_get_vectname(), GV_load_vector(), GV_select_surf(), GV_Set_ClientData(), GV_set_trans(), GV_set_vectmode(), GV_surf_is_selected(), GV_unselect_surf(), and GV_vect_exists().

int gv_init_vect

(

geovect *

gv

)

Initialize geovect struct.

Parameters

gv	pointer to geovect struct

Returns

-1 on failure

0 on succcess

Definition at line 214 of file gv.c.

References G_debug().

int gv_num_vects

(

void

)

Get number of loaded vector sets.

Returns

number of vector sets

Definition at line 80 of file gv.c.

References G_debug().

Referenced by GV_num_vects().

int gv_set_defaults

(

geovect *

gv

)

Set attributes of vector set to default values.

Parameters

gv	pointer to geovect struct

Returns

-1 on error

0 on success

Definition at line 180 of file gv.c.

References G_debug(), and NULL.

Referenced by GV_new_vector().

void gv_set_drapesurfs	(	geovect *	gv,
		int *	hsurfs,
		int	nsurfs
	)

Set drape surfaces for vector set.

Parameters

gv	pointer to geovect struct
hsurfs	array of surfaces (id)
nsurfs	number of surfaces

Definition at line 339 of file gv.c.

void gv_update_drapesurfs

(

void

)

Update drape surfaces.

Call after surface is deleted

Definition at line 150 of file gv.c.

References gs_get_surf(), and NULL.

Referenced by GS_delete_surface().