OGSF library - loading and manipulating vector sets (lower level functions) More...
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)
(C) 1999-2008, 2011 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.
Definition in file gv.c.
Macro Definition Documentation
◆ FIRST_VECT_ID
Function Documentation
◆ gv_delete_vect()
| void gv_delete_vect | ( | int | id | ) |
Delete vector set (unload)
- Parameters
-
id vector set id
Definition at line 242 of file gv.c.
References G_debug(), gv_free_vect(), and gv_get_vect().
Referenced by GV_delete_vector().
◆ gv_free_vect()
| 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 265 of file gv.c.
Referenced by gv_delete_vect().
◆ gv_free_vectmem()
| void gv_free_vectmem | ( | geovect * | fv | ) |
Free allocated memory.
- Parameters
-
fv pointer to geovect struct
Definition at line 313 of file gv.c.
References g_line::cats, g_vect_style_thematic::color_column, g_line::dims, g_vect::filename, G_free(), g_vect::hstyle, g_vect::lines, g_vect::n_lines, g_line::next, g_line::npts, NULL, g_line::p2, g_line::p3, g_vect_style_thematic::size_column, g_vect::style, sub_Vectmem(), g_vect_style_thematic::symbol_column, g_vect::tstyle, and g_vect_style_thematic::width_column.
◆ gv_get_last_vect()
| 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 96 of file gv.c.
Referenced by gv_get_new_vect().
◆ 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 118 of file gv.c.
References G_malloc, G_zero(), gv_get_last_vect(), g_vect::gvect_id, g_vect::next, and NULL.
◆ gv_get_prev_vect()
| geovect* gv_get_prev_vect | ( | int | id | ) |
◆ gv_get_vect()
| 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 34 of file gv.c.
References G_debug().
Referenced by gv_delete_vect(), GV_draw_fastvect(), GV_draw_vect(), GV_Get_ClientData(), GV_get_trans(), GV_select_surf(), GV_Set_ClientData(), GV_set_trans(), GV_surf_is_selected(), GV_unselect_surf(), GV_unset_style_thematic(), and GV_vect_exists().
◆ gv_init_vect()
| int gv_init_vect | ( | geovect * | gv | ) |
Initialize geovect struct.
- Parameters
-
gv pointer to geovect struct
- Returns
- -1 on failure
- 0 on success
Definition at line 226 of file gv.c.
References G_debug(), and g_vect::gvect_id.
◆ gv_num_vects()
| int gv_num_vects | ( | void | ) |
Get number of loaded vector sets.
- Returns
- number of vector sets
Definition at line 77 of file gv.c.
Referenced by GV_num_vects().
◆ gv_set_defaults()
| 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 187 of file gv.c.
References g_vect_style::color, g_vect::drape_surf_id, g_vect::fastlines, g_vect::filename, G_debug(), g_vect::gvect_id, g_vect::hstyle, g_vect::lines, MAX_SURFS, g_vect::n_lines, g_vect::n_surfs, g_vect_style::next, g_vect::next, NULL, g_vect::style, g_vect::tstyle, g_vect::use_mem, g_vect::use_z, g_vect_style::width, g_vect::x_trans, g_vect::y_trans, and g_vect::z_trans.
◆ gv_set_drapesurfs()
| 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 364 of file gv.c.
References g_vect::drape_surf_id, and MAX_SURFS.
