ogl_text.c File Reference

Functions to prepare OpenGL rendering for text. More...

#include "global.h"
#include "glview.h"

Include dependency graph for ogl_text.c:

Go to the source code of this file.

Macros
#define	PANGO_TEXT_SIZE   500
#define	OUTLINE_WIDTH   3
#define	GL_CLAMP_TO_EDGE   0x812F
#define	GL_TEXTURE_WRAP_R   0x8072

Functions
void	update_string_instances (glsl_program *glsl, object_3d *obj)
	Update OpenGL string texture instances.
int *	paint_bitmap (vec4_t color, GLfloat a, int cw, int ch, unsigned char *buff)
	paint bitmap data using color
object_3d *	create_string_texture (int cwidth, int cheight, int *pixels)
	OpenGL 3D string object rendering.
object_3d *	gl_pango_render_layout (PangoLayout *layout, GLenum texture, int id, screen_string *this_string)
	OpenGL 3D pango layout object rendering.
ColRGBA *	opposite_color (ColRGBA col)
	compute the opposite color
void	render_string (int glsl, int id, screen_string *this_string)
	render a screen string
void	debug_string (screen_string *this_string)
	debug screen string data
void	render_all_strings (int glsl, int id)
	render all string to be rendered for a label list
screen_string *	was_not_rendered_already (char *word, screen_string *list)
	check if a string was not already rendered and the corresponding screen string created
void	add_string_instance (screen_string *string, vec3_t pos, atom *at, atom *bt, atom *ct)
	add an instance to a screen string
void	add_string (char *text, int id, ColRGBA col, vec3_t pos, float lshift[3], atom *at, atom *bt, atom *ct)
	Add a screen string to the list of screen string to render.
void	prepare_string (char *text, int id, ColRGBA col, vec3_t pos, float lshift[3], atom *at, atom *bt, atom *ct)
	prepare a screen string to be rendered

Variables
int	measures_drawing
int	type_of_measure
GLuint	textures_id [2]
const int	OUTLINE_BRUSH [2 *OUTLINE_WIDTH+1][2 *OUTLINE_WIDTH+1]
gboolean	render_format

Detailed Description

Functions to prepare OpenGL rendering for text.

Author

Sébastien Le Roux sebas.nosp@m.tien.nosp@m..lero.nosp@m.ux@i.nosp@m.pcms..nosp@m.unis.nosp@m.tra.f.nosp@m.r

Definition in file ogl_text.c.

Macro Definition Documentation

GL_CLAMP_TO_EDGE

#define GL_CLAMP_TO_EDGE   0x812F

Definition at line 59 of file ogl_text.c.

GL_TEXTURE_WRAP_R

#define GL_TEXTURE_WRAP_R   0x8072

Definition at line 63 of file ogl_text.c.

OUTLINE_WIDTH

#define OUTLINE_WIDTH   3

Definition at line 56 of file ogl_text.c.

PANGO_TEXT_SIZE

#define PANGO_TEXT_SIZE   500

Definition at line 55 of file ogl_text.c.

Function Documentation

add_string()

void add_string	(	char *	text,
		int	id,
		ColRGBA	col,
		vec3_t	pos,
		float	lshift[3],
		atom *	at,
		atom *	bt,
		atom *	ct )

Add a screen string to the list of screen string to render.

Parameters

text	the text to render
id	the label id
col	the color
pos	the position
lshift	label position shift on x, y and z, if any
at	the 1st atom, if any (bond or angle measure string)
bt	the 2nd atom, if any (bond or angle measure string)
ct	the 3rd atom, if any (angle measure string)

Definition at line 655 of file ogl_text.c.

add_string_instance()

void add_string_instance	(	screen_string *	string,
		vec3_t	pos,
		atom *	at,
		atom *	bt,
		atom *	ct )

add an instance to a screen string

Parameters

string	the screen string to increase
pos	the position
at	the 1st atom, if any (bond or angle measure string)
bt	the 2nd atom, if any (bond or angle measure string)
ct	the 3rd atom, if any (angle measure string)

Definition at line 601 of file ogl_text.c.

create_string_texture()

object_3d * create_string_texture	(	int	cwidth,
		int	cheight,
		int *	pixels )

OpenGL 3D string object rendering.

Parameters

cwidth	width
cheight	height
pixels	the data to render

Definition at line 183 of file ogl_text.c.

debug_string()

void debug_string

(

screen_string *

this_string

)

debug screen string data

Parameters

this_string

Definition at line 525 of file ogl_text.c.

gl_pango_render_layout()

object_3d * gl_pango_render_layout	(	PangoLayout *	layout,
		GLenum	texture,
		int	id,
		screen_string *	this_string )

OpenGL 3D pango layout object rendering.

Parameters

layout	the Pango layout
texture	the OpenGL texture type
id	the label id
this_string	the screen string

Definition at line 298 of file ogl_text.c.

opposite_color()

ColRGBA * opposite_color

(

ColRGBA

col

)

compute the opposite color

Parameters

col	input color

Definition at line 399 of file ogl_text.c.

paint_bitmap()

int * paint_bitmap	(	vec4_t	color,
		GLfloat	a,
		int	cw,
		int	ch,
		unsigned char *	buff )

paint bitmap data using color

Parameters

color	the color
a	opacity
cw	width
ch	height
buff	the data to paint

Definition at line 117 of file ogl_text.c.

prepare_string()

void prepare_string	(	char *	text,
		int	id,
		ColRGBA	col,
		vec3_t	pos,
		float	lshift[3],
		atom *	at,
		atom *	bt,
		atom *	ct )

prepare a screen string to be rendered

Parameters

text	the text to render
id	the label id
col	the color
pos	the position
lshift	label position shift on x, y and z, if any
at	the 1st atom, if any (bond or angle measure string)
bt	the 2nd atom, if any (bond or angle measure string)
ct	the 3rd atom, if any (angle measure string)

Definition at line 691 of file ogl_text.c.

render_all_strings()

void render_all_strings	(	int	glsl,
		int	id )

render all string to be rendered for a label list

Parameters

glsl	shader id
id	label id

Definition at line 549 of file ogl_text.c.

render_string()

void render_string	(	int	glsl,
		int	id,
		screen_string *	this_string )

render a screen string

Parameters

glsl	the shader id
id	the label id
this_string	the screen string to render

Definition at line 418 of file ogl_text.c.

update_string_instances()

void update_string_instances ( glsl_program * glsl, object_3d * obj )

extern

Update OpenGL string texture instances.

Parameters

glsl	the target glsl
obj

Definition at line 414 of file ogl_shading.c.

was_not_rendered_already()

screen_string * was_not_rendered_already	(	char *	word,
		screen_string *	list )

check if a string was not already rendered and the corresponding screen string created

Parameters

word	the string to render
list	the screen string list

Definition at line 571 of file ogl_text.c.

Variable Documentation

measures_drawing

int measures_drawing

extern

Definition at line 67 of file d_measures.c.

OUTLINE_BRUSH

const int OUTLINE_BRUSH[2 *OUTLINE_WIDTH+1][2 *OUTLINE_WIDTH+1]

Initial value:

= {{ 10, 30,  45,  50,  45,  30,  10 },
   { 30, 65,  85,  100,  85, 65,  30 },
   { 45, 85,  200, 256, 200, 85,  45 },
   { 50, 100, 256, 256, 256, 100, 50 },
   { 45, 85,  200, 256, 200, 85,  45 },
   { 30, 65,  85,  100,  85, 65,  30 },
   { 10, 30,  45,  50,  45,  30,  10 }}

Definition at line 72 of file ogl_text.c.

render_format

gboolean render_format

Definition at line 172 of file ogl_text.c.

textures_id

GLuint textures_id[2]

Definition at line 70 of file ogl_text.c.

type_of_measure

int type_of_measure

extern

Definition at line 66 of file d_measures.c.