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

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

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

Get focus.

Parameters

data	nviz data
x,y,z	focus coordinates

Definition at line 119 of file position.c.

References GS_get_focus().

Referenced by wxnviz.Nviz::GetFocus().

float Nviz_get_longdim

(

nv_data *

data

)

Get largest dimension.

Parameters

data

nviz data

Definition at line 198 of file position.c.

References GS_get_longdim().

Referenced by wxnviz.Nviz::GetLongDim().

float Nviz_get_xyrange

(

nv_data *

data

)

Get xy range.

Parameters

data

nviz data

Definition at line 176 of file position.c.

Referenced by wxnviz.Nviz::GetXYRange().

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

Get z range.

Parameters

data	nviz data
min,max	z range

Definition at line 187 of file position.c.

References GS_get_zrange_nz().

Referenced by wxnviz.Nviz::GetZRange().

int Nviz_has_focus

(

nv_data *

data

)

Test focus.

Parameters

data

nviz data

Definition at line 161 of file position.c.

References GS_get_focus().

Referenced by wxnviz.Nviz::GetFocus().

void Nviz_init_view

(

nv_data *

data

)

Initialize view, position, lighting settings (focus)

Set position to center of view

Definition at line 23 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().

Referenced by wxnviz.Nviz::InitView().

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

Set focus.

Parameters

data	nviz data
x,y,z	focus coordinates

Definition at line 141 of file position.c.

References GS_set_focus(), and y.

Referenced by wxnviz.Nviz::SetFocus().

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 75 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(), and tools::id.

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

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 49 of file position.c.

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

Referenced by Nviz_init_view().