Nviz library – Define creation and interface functions for map objects. More...

#include <stdlib.h>
#include <time.h>
#include <grass/glocale.h>
#include <grass/nviz.h>

Include dependency graph for map_obj.c:

Functions
int	Nviz_new_map_obj (int type, const char name, double value, nv_data data)
	Create a new map object which can be one of surf, vect, vol or site. More...

int	Nviz_set_attr (int id, int type, int desc, int src, const char str_value, double num_value, nv_data data)

void	Nviz_set_surface_attr_default ()
	Set default surface attributes. More...

int	Nviz_set_vpoint_attr_default (int id)
	Set default vector point attributes. More...

int	Nviz_set_volume_attr_default (int id)
	Set default volume attributes. More...

int	Nviz_unset_attr (int id, int type, int desc)

Detailed Description

Nviz library – Define creation and interface functions for map objects.

Map objects are considered to be surfaces, vector plots, or site files.

Based on visualization/nviz/src/map_obj.c

Author: Updated/modified by Martin Landa <landa.martin gmail.com> (Google SoC 2008/2010)

Definition in file map_obj.c.

Function Documentation

int Nviz_new_map_obj	(	int	type,
		const char *	name,
		double	value,
		nv_data *	data
	)

Create a new map object which can be one of surf, vect, vol or site.

This routine creates the object internally in the gsf libraryb. Optionally, a logical name may be specified for the new map object. If no name is specified, a logical name is assigned to the new object automatically. Note that maintaining unique logical names is not the responsibility of the library (currently).

Initially map objects contain no data, use the attribute commands to set attributes such as topology, color, etc.

Parameters

type	map object type
name	map name (NULL for constant)
value	constant (used if name is NULL)
data	nviz data

Returns: map object id; -1 on error

Definition at line 44 of file map_obj.c.

References G_free(), G_warning(), GP_delete_site(), GP_load_site(), GP_new_site(), GP_num_sites(), GP_select_surf(), GP_set_sitemode(), GS_get_surf_list(), GS_new_surface(), GS_num_surfs(), GV_delete_vector(), GV_load_vector(), GV_new_vector(), GV_num_vects(), GV_select_surf(), GV_set_vectmode(), GVL_delete_vol(), GVL_load_vol(), GVL_new_vol(), GVL_num_vols(), NULL, Nviz_set_attr(), Nviz_set_volume_attr_default(), and Nviz_set_vpoint_attr_default().

Referenced by wxnviz.Nviz::AddConstant(), wxnviz.Nviz::LoadSurface(), wxnviz.Nviz::LoadVector(), and wxnviz.Nviz::LoadVolume().

int Nviz_set_attr	(	int	id,
		int	type,
		int	desc,
		int	src,
		const char *	str_value,
		double	num_value,
		nv_data *	data
	)

Set map object attribute

Parameters

id	map object id
type	map object type (MAP_OBJ_SURF, MAP_OBJ_VECT, ...)
desc	attribute descriptor
src	attribute source
str_value	attribute value as string (if NULL, check for num_value)
num_value	attribute value as double