position.c File Reference

Nviz library – Position, focus settings. More...

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

Include dependency graph for position.c:

Go to the source code of this file.

Functions
void	Nviz_init_view (nv_data *data)
int	Nviz_set_focus_state (int state_flag)
	Set focus state.
int	Nviz_set_focus_map (int type, int id)
	Set focus based on loaded map.
int	Nviz_get_focus (nv_data *data, float *x, float *y, float *z)
	Get focus.
int	Nviz_set_focus (nv_data *data, float x, float y, float z)
	Set focus.
int	Nviz_has_focus (nv_data *data)
	Test focus.
float	Nviz_get_xyrange (nv_data *data)
	Get xy range.
int	Nviz_get_zrange (nv_data *data, float *min, float *max)
	Get z range.
float	Nviz_get_longdim (nv_data *data)
	Get largest dimension.

Detailed Description

Nviz library – Position, focus settings.

Based on visualization/nviz/src/position.c

(C) 2008, 2010 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

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

Definition in file position.c.

Function Documentation

Nviz_get_focus()

int Nviz_get_focus	(	nv_data *	data,
		float *	x,
		float *	y,
		float *	z
	)

Get focus.

Parameters

data	nviz data [unused]
x,y,z	focus coordinates

Definition at line 120 of file position.c.

References GS_get_focus(), and x.

Nviz_get_longdim()

float Nviz_get_longdim

(

nv_data *

data

)

Get largest dimension.

Parameters

data	nviz data [unused]

Definition at line 197 of file position.c.

References GS_get_longdim().

Nviz_get_xyrange()

float Nviz_get_xyrange

(

nv_data *

data

)

Get xy range.

Parameters

data

nviz data

Definition at line 175 of file position.c.

References nv_data::xyrange.

Nviz_get_zrange()

int Nviz_get_zrange	(	nv_data *	data,
		float *	min,
		float *	max
	)

Get z range.

Parameters

data	nviz data [unused]
min,max	z range

Definition at line 186 of file position.c.

References GS_get_zrange_nz(), max, and min.

Nviz_has_focus()

int Nviz_has_focus

(

nv_data *

data

)

Test focus.

Parameters

data	nviz data [unused]

Definition at line 160 of file position.c.

References GS_get_focus().

Nviz_init_view()

void Nviz_init_view

(

nv_data *

data

)

Initialize view, position, lighting settings (focus)

Set position to center of view

Definition at line 24 of file position.c.

References GS_init_view(), Nviz_set_focus_state(), Nviz_set_light_ambient(), Nviz_set_light_bright(), Nviz_set_light_color(), and Nviz_set_light_position().

Nviz_set_focus()

int Nviz_set_focus	(	nv_data *	data,
		float	x,
		float	y,
		float	z
	)

Set focus.

Parameters

data	nviz data [unused]
x,y,z	focus coordinates

Definition at line 141 of file position.c.

References GS_set_focus(), and x.

Nviz_set_focus_map()

int Nviz_set_focus_map	(	int	type,
		int	id
	)

Set focus based on loaded map.

If map is MAP_OBJ_UNDEFINED, set focus from first surface/volume in the list.

Parameters

type	map object type
id	map object id

Returns

0 on no focus

id id of map object used for setting focus

Definition at line 76 of file position.c.

References G_free(), GS_get_surf_list(), GS_num_surfs(), GS_set_focus_center_map(), GS_set_nofocus(), GVL_get_vol_list(), GVL_num_vols(), GVL_set_focus_center_map(), MAP_OBJ_SURF, MAP_OBJ_UNDEFINED, and MAP_OBJ_VOL.

Nviz_set_focus_state()

int Nviz_set_focus_state

(

int

state_flag

)

Set focus state.

Parameters

state_flag

1 for center view, 0 use viewdir

Returns

1 on success

0 on failure

Definition at line 50 of file position.c.

References _, G_warning(), GS_set_infocus(), and GS_set_nofocus().

Referenced by Nviz_init_view().