nviz.c File Reference

Nviz library – Data management. More...

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

Include dependency graph for nviz.c:

Go to the source code of this file.

Functions
void	Nviz_init_data (nv_data *data)
	Initialize Nviz data. More...
void	Nviz_destroy_data (nv_data *data)
	Free allocated space by nv_data struct. More...
void	Nviz_set_bgcolor (nv_data *data, int color)
	Set background color. More...
int	Nviz_get_bgcolor (nv_data *data)
	Get background color. More...
int	Nviz_color_from_str (const char *color_str)
	Get color value from color string (name or RGB triplet) More...
struct fringe_data *	Nviz_new_fringe (nv_data *data, int id, unsigned long color, double elev, int nw, int ne, int sw, int se)
struct fringe_data *	Nviz_set_fringe (nv_data *data, int id, unsigned long color, double elev, int nw, int ne, int sw, int se)
void	Nviz_draw_fringe (nv_data *data)
int	Nviz_set_arrow (nv_data *data, int sx, int sy, float size, unsigned int color)
	Sets the North Arrow position and return world coords. More...
int	Nviz_draw_arrow (nv_data *data)
	Draws the North Arrow. More...
void	Nviz_delete_arrow (nv_data *data)
	Deletes the North Arrow. More...
struct scalebar_data *	Nviz_new_scalebar (nv_data *data, int bar_id, float *coords, float size, unsigned int color)
struct scalebar_data *	Nviz_set_scalebar (nv_data *data, int bar_id, int sx, int sy, float size, unsigned int color)
	Sets the scale bar position and return world coords. More...
void	Nviz_draw_scalebar (nv_data *data)
	Draws the Scale bar. More...
void	Nviz_delete_scalebar (nv_data *data, int bar_id)
	Deletes scale bar. More...

Detailed Description

Nviz library – Data management.

Based on visualization/nviz/src/

(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 nviz.c.

Function Documentation

Nviz_color_from_str()

int Nviz_color_from_str

(

const char *

color_str

)

Get color value from color string (name or RGB triplet)

Parameters

color_str

color string

Returns

color value

Definition at line 125 of file nviz.c.

References _, BLU_MASK, G_str_to_color(), G_warning(), GRN_MASK, and RED_MASK.

Nviz_delete_arrow()

void Nviz_delete_arrow

(

nv_data *

data

)

Deletes the North Arrow.

Parameters

data

nviz data

Definition at line 313 of file nviz.c.

Nviz_delete_scalebar()

void Nviz_delete_scalebar	(	nv_data *	data,
		int	bar_id
	)

Deletes scale bar.

When scalebar is freed, array then contains NULL, which must be tested during drawing.

Parameters

data

nviz data

Definition at line 434 of file nviz.c.

Nviz_destroy_data()

void Nviz_destroy_data

(

nv_data *

data

)

Free allocated space by nv_data struct.

Parameters

data

nviz data

Definition at line 68 of file nviz.c.

Nviz_draw_arrow()

int Nviz_draw_arrow

(

nv_data *

data

)

Draws the North Arrow.

Parameters

data

nviz data

Definition at line 296 of file nviz.c.

Nviz_draw_fringe()

void Nviz_draw_fringe

(

nv_data *

data

)

Draw fringe

Parameters

data

nviz data

Definition at line 232 of file nviz.c.

Nviz_draw_scalebar()

void Nviz_draw_scalebar

(

nv_data *

data

)

Draws the Scale bar.

Parameters

data

nviz data

Definition at line 411 of file nviz.c.

Nviz_get_bgcolor()

int Nviz_get_bgcolor

(

nv_data *

data

)

Get background color.

Parameters

data

nviz data

Returns

color color value

Definition at line 113 of file nviz.c.

Nviz_init_data()

void Nviz_init_data

(

nv_data *

data

)

Initialize Nviz data.

Parameters

data

nviz data

Definition at line 26 of file nviz.c.

Nviz_new_fringe()

struct fringe_data* Nviz_new_fringe	(	nv_data *	data,
		int	id,
		unsigned long	color,
		double	elev,
		int	nw,
		int	ne,
		int	sw,
		int	se
	)

Add new fringe

Parameters

data	nviz data
id	surface id
color	color
elev	fringe elevation
nw,ne,sw,se	1 (turn on) 0 (turn off)

Returns

pointer to allocated fringe_data structure

NULL on error

Definition at line 150 of file nviz.c.

Nviz_new_scalebar()

struct scalebar_data* Nviz_new_scalebar	(	nv_data *	data,
		int	bar_id,
		float *	coords,
		float	size,
		unsigned int	color
	)

Add new scalebar

Parameters

data	nviz data
bar_id	scale bar id
coords	real(?) coordinates
size	scale bar length
color	scalebar/text color

Returns

pointer to allocated scalebar_data structure

NULL on error

Definition at line 332 of file nviz.c.

Nviz_set_arrow()

int Nviz_set_arrow	(	nv_data *	data,
		int	sx,
		int	sy,
		float	size,
		unsigned int	color
	)

Sets the North Arrow position and return world coords.

Parameters

data	nviz data
sx,sy	screen coordinates
size	arrow length
color	arrow/text color

Definition at line 251 of file nviz.c.

Nviz_set_bgcolor()

void Nviz_set_bgcolor	(	nv_data *	data,
		int	color
	)

Set background color.

Parameters

data	nviz data
color	color value

Definition at line 99 of file nviz.c.

Nviz_set_fringe()

struct fringe_data* Nviz_set_fringe	(	nv_data *	data,
		int	id,
		unsigned long	color,
		double	elev,
		int	nw,
		int	ne,
		int	sw,
		int	se
	)

Set fringe

Parameters

data	nviz data
id	surface id
color	color
elev	fringe elevation
nw,ne,sw,se	1 (turn on) 0 (turn off)

Returns

pointer to allocated fringe_data structure

NULL on error

Definition at line 193 of file nviz.c.

Nviz_set_scalebar()

struct scalebar_data* Nviz_set_scalebar	(	nv_data *	data,
		int	bar_id,
		int	sx,
		int	sy,
		float	size,
		unsigned int	color
	)

Sets the scale bar position and return world coords.

Parameters

data	nviz data
bar_id	scale bar id
sx,sy	screen coordinates
size	scale bar length
color	scalebar/text color

Returns

pointer to allocated scalebar_data structure

NULL when there's no surface

Definition at line 366 of file nviz.c.