lights.c File Reference

Nviz library – Change lighting settings. More...

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

Include dependency graph for lights.c:

Go to the source code of this file.

Functions
int	Nviz_set_light_position (nv_data *data, int num, double x, double y, double z, double w)
	Set light position.
int	Nviz_set_light_bright (nv_data *data, int num, double value)
	Set light brightness.
int	Nviz_set_light_color (nv_data *data, int num, int red, int green, int blue)
	Set light color.
int	Nviz_set_light_ambient (nv_data *data, int num, double value)
	Set light ambient.
int	Nviz_init_light (nv_data *data, int num)
	Init new light.
int	Nviz_new_light (nv_data *data)
	Define new light.
void	Nviz_draw_model (nv_data *data)
	Draw lighting model.

Detailed Description

Nviz library – Change lighting settings.

Based on visualization/nviz/src/lights.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 lights.c.

Function Documentation

Nviz_draw_model()

void Nviz_draw_model

(

nv_data *

data

)

Draw lighting model.

Parameters

data	nviz data [unused]

Definition at line 186 of file lights.c.

References GS_done_draw(), GS_draw_lighting_model(), GS_ready_draw(), GS_set_draw(), GSD_BACK, and GSD_FRONT.

Nviz_init_light()

int Nviz_init_light	(	nv_data *	data,
		int	num
	)

Init new light.

Parameters

data	nviz data
num	light num (starts at 1)

Definition at line 134 of file lights.c.

References light_data::ab, light_data::ag, light_data::ar, light_data::b, light_data::brt, light_data::g, G_debug(), light_data::id, nv_data::light, MAX_LIGHTS, light_data::r, light_data::w, light_data::x, light_data::y, and light_data::z.

Referenced by Nviz_new_light().

Nviz_new_light()

int Nviz_new_light

(

nv_data *

data

)

Define new light.

Parameters

data

nviz data

Returns

1 on success

0 on failure

Definition at line 165 of file lights.c.

References _, G_warning(), GS_new_light(), and Nviz_init_light().

Referenced by Nviz_init_data().

Nviz_set_light_ambient()

int Nviz_set_light_ambient	(	nv_data *	data,
		int	num,
		double	value
	)

Set light ambient.

Parameters

data	nviz data
num	light num (starts at 1)
value	ambient value (same for R/G/B) (0-1)

Definition at line 116 of file lights.c.

References light_data::ab, light_data::ag, light_data::ar, G_debug(), GS_setlight_ambient(), and nv_data::light.

Referenced by Nviz_init_view().

Nviz_set_light_bright()

int Nviz_set_light_bright	(	nv_data *	data,
		int	num,
		double	value
	)

Set light brightness.

Parameters

data	nviz data
num	light num (starts at 1)
value	brightness value

Definition at line 65 of file lights.c.

References light_data::b, b, light_data::brt, light_data::g, g, G_debug(), GS_setlight_color(), nv_data::light, light_data::r, and r.

Referenced by Nviz_init_view().

Nviz_set_light_color()

int Nviz_set_light_color	(	nv_data *	data,
		int	num,
		int	red,
		int	green,
		int	blue
	)

Set light color.

Parameters

data	nviz data
num	light num (starts at 1)
red,green,blue	RGB values (0-255)

Definition at line 90 of file lights.c.

References light_data::b, b, light_data::brt, light_data::g, g, G_debug(), GS_setlight_color(), nv_data::light, light_data::r, and r.

Referenced by Nviz_init_view().

Nviz_set_light_position()

int Nviz_set_light_position	(	nv_data *	data,
		int	num,
		double	x,
		double	y,
		double	z,
		double	w
	)

Set light position.

Parameters

data	nviz data
num	light num (starts at 1)
x,y,z,w	position, model coordinates

Returns

1

Definition at line 28 of file lights.c.

References G_debug(), GS_setlight_position(), light_data::id, nv_data::light, light_data::w, light_data::x, x, light_data::y, and light_data::z.

Referenced by Nviz_init_view().