The Graphics Part

The t_elayer part. More...

Data Structures
struct	t_pt
	A point structure. More...
struct	t_rect
	A rectangle structure. More...
struct	t_matrix
	A matrix structure. More...
struct	t_rgb
	A rgb color structure. More...
struct	t_rgba
	A rgba color structure. More...
struct	t_hsl
	A hsl color structure. More...
struct	t_hsla
	A hsla color structure. More...
struct	t_efont
	The font structure. More...
struct	t_etext
	The text structure. More...
struct	t_egobj
	The drawing object. More...
struct	t_elayer
	The drawing layer. More...

Macros
#define	EPD_PI   (3.141592653589793238462643383279502884f)
	Macros that define the a pi.
#define	EPD_2PI   (6.283185307179586476925286766559005f)
	Macros that define the a 2pi.
#define	EPD_PI2   (1.57079632679489661923132169163975144f)
	Macros that define the a pi over 2.
#define	EPD_PI4   (0.785398163397448309615660845819875721f)
	Macros that define the a pi over 4.

Enumerations
enum	elayer_flags { EGRAPHICS_OPEN = 0, EGRAPHICS_CLOSE = -1, EGRAPHICS_INVALID = -2, EGRAPHICS_TODRAW = -3 }
	The flags that defines the status of a layer. More...
enum	etextanchor_flags {   ETEXT_UP = 0, ETEXT_UP_LEFT = 1, ETEXT_UP_RIGHT = 2, ETEXT_DOWN = 3,   ETEXT_DOWN_LEFT = 4, ETEXT_DOWN_RIGHT = 5, ETEXT_LEFT = 6, ETEXT_RIGHT = 7,   ETEXT_CENTER = 8 }
	The flags that defines the text anchor. More...
enum	etextwrap_flags { ETEXT_NOWRAP = 0, ETEXT_WRAP = 1 }
	The flags that defines if the text should be wrapped. More...
enum	etextjustify_flags { ETEXT_JLEFT = 0, ETEXT_JRIGHT = 1, ETEXT_JCENTER = 2 }
	The flags that define the text justification. More...
enum	egraphics_types {   E_GOBJ_INVALID = 0, E_GOBJ_PATH, E_GOBJ_RECT, E_GOBJ_ARC,   E_GOBJ_OVAL, E_GOBJ_TEXT, E_GOBJ_IMAG }
	The types of graphical object. More...
enum	epath_types { E_PATH_MOVE = 0, E_PATH_CURVE = 1 }
	The types of path. More...

Functions
void	egraphics_fill (t_elayer *g)
void	egraphics_fill_preserve (t_elayer *g)
void	egraphics_stroke (t_elayer *g)
void	egraphics_stroke_preserve (t_elayer *g)
void	etext_layout_draw (t_etext *textlayout, t_elayer *g)
void	egraphics_set_line_splinestep (t_elayer *g, float smooth)
void	egraphics_set_line_width (t_elayer *g, float width)
void	egraphics_set_color_rgba (t_elayer *g, t_rgba *rgba)
void	egraphics_set_color_rgb (t_elayer *g, t_rgb *rgb)
void	egraphics_set_color_hex (t_elayer *g, t_symbol *hex)
void	egraphics_set_color_hsla (t_elayer *g, t_hsla *hsla)
void	egraphics_set_color_hsl (t_elayer *g, t_hsl *hsl)
void	egraphics_rotate (t_elayer *g, float angle)
void	egraphics_matrix_init (t_matrix *x, float xx, float yx, float xy, float yy, float x0, float y0)
void	egraphics_set_matrix (t_elayer *g, const t_matrix *matrix)
void	egraphics_apply_matrix (t_elayer *g, t_egobj *gobj)
void	egraphics_line_to (t_elayer *g, float x, float y)
void	egraphics_move_to (t_elayer *g, float x, float y)
void	egraphics_curve_to (t_elayer *g, float ctrl1x, float ctrl1y, float ctrl2x, float ctrl2y, float endx, float endy)
void	egraphics_arc_to (t_elayer *g, float cx, float cy, float extend)
void	egraphics_arc_oval_to (t_elayer *g, float cx, float cy, float radius, float extend)
void	egraphics_line (t_elayer *g, float x0, float y0, float x1, float y1)
void	egraphics_curve (t_elayer *g, float startx, float starty, float ctrl1x, float ctrl1y, float ctrl2x, float ctrl2y, float endx, float endy)
void	egraphics_line_fast (t_elayer *g, float x0, float y0, float x1, float y1)
void	egraphics_close_path (t_elayer *g)
void	egraphics_rectangle (t_elayer *g, float x, float y, float width, float height)
void	egraphics_rectangle_rounded (t_elayer *g, float x, float y, float width, float height, float roundness)
void	egraphics_circle (t_elayer *g, float xc, float yc, float radius)
void	egraphics_oval (t_elayer *g, float xc, float yc, float radiusx, float radiusy)
void	egraphics_arc (t_elayer *g, float xc, float yc, float radius, float angle1, float angle2)
void	egraphics_arc_oval (t_elayer *g, float xc, float yc, float radiusx, float radiusy, float angle1, float angle2)
t_etext *	etext_layout_create (void)
void	etext_layout_destroy (t_etext *textlayout)
void	etext_layout_set (t_etext *textlayout, const char *text, t_efont *jfont, float x, float y, float width, float height, etextanchor_flags anchor, etextjustify_flags justify, etextwrap_flags wrap)
void	etext_layout_settextcolor (t_etext *textlayout, t_rgba *color)
t_efont *	efont_create (t_symbol *family, t_symbol *slant, t_symbol *weight, float size)
void	efont_destroy (t_efont *font)
char *	rgba_to_hex (t_rgba color)
char *	rgb_to_hex (t_rgb color)
char *	hsla_to_hex (t_hsla color)
char *	hsl_to_hex (t_hsl color)
t_hsl	rgb_to_hsl (t_rgb color)
t_hsla	rgba_to_hsla (t_rgba color)
t_rgba	hex_to_rgba (char *color)
t_rgb	hex_to_rgb (char *color)
t_rgba	hsla_to_rgba (t_hsla color)
t_rgb	hsl_to_rgb (t_hsl color)
t_rgba	rgba_addContrast (t_rgba color, float contrast)
t_rgb	rgb_addContrast (t_rgb color, float contrast)
void	rgba_set (t_rgba *color, float red, float green, float blue, float alpha)
void	rgb_set (t_rgb *color, float red, float green, float blue)
void	hsla_set (t_hsla *color, float hue, float saturation, float luminosity, float alpha)
void	hsl_set (t_hsl *color, float hue, float saturation, float luminosity)
float	pd_clip_min (float aValue, float aMinimum)
float	pd_clip_max (float aValue, float aMaximum)
float	pd_clip_minmax (float aValue, float aMinimum, float aMaximum)
float	pd_ordinate (float radius, float angle)
float	pd_abscissa (float radius, float angle)
float	pd_radius (float x, float y)
float	pd_angle (float x, float y)
	__attribute__ ((used)) static t_rgba rgba_black = {0.3f, 0.3f, 0.3f, 1.f}

Detailed Description

The t_elayer part.

This part refers to the methods and structures used to paint.

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Data Structure Documentation

struct t_pt

A point structure.

It contains the members x and y for abscissa and ordinate.

Data Fields
float	x	The abscissa coordiante.
float	y	The ordiante coordiante.

struct t_rect

A rectangle structure.

It contains the members x, y, width and height for abscissa and ordinate and size.

Data Fields
float	x	The abscissa coordiante.
float	y	The ordiante coordiante.
float	width	The width of the rectangle
float	height	The height of the rectangle

struct t_matrix

A matrix structure.

It contains the members xx, yx, xy, yy, x0 and y0

Data Fields
float	xx	The abscissa-abscissa translation of the matrix
float	yx	The abscissa-ordiante translation of the matrix
float	xy	The ordiante-abscissa translation of the matrix
float	yy	The ordiante-ordiante translation of the matrix
float	x0	The abscissa origin of the matrix
float	y0	The ordiante origin of the matrix

struct t_rgb

A rgb color structure.

It contains the members red, green and blue.

Data Fields
float	red	The red value.
float	green	The green value.
float	blue	The blue value.

struct t_rgba

A rgba color structure.

It contains the members red, green, blue and alpha.

Data Fields
float	red	The red value.
float	green	The green value.
float	blue	The blue value.
float	alpha	The alpha value.

struct t_hsl

A hsl color structure.

It contains the members hue, saturation and lightness.

Data Fields
float	hue	The hue value.
float	saturation	The saturation value.
float	lightness	The lightness value.

struct t_hsla

A hsla color structure.

It contains the members hue, saturation, lightness and alpha.

Data Fields
float	hue	The hue value.
float	saturation	The saturation value.
float	lightness	The lightness value.
float	alpha	The alpha value.

struct t_efont

The font structure.

It contains the informations of a font.

Data Fields
float	c_size	The size of the font.
long	c_sizereal	The plateform's size of the font.
t_symbol *	c_family	The family of the font (times, helvetica, ect.).
t_symbol *	c_slant	The slant of the font (regular, italic, etc.).
t_symbol *	c_weight	The weight of the font (normal, bold).

struct t_etext

The text structure.

It contains the all the informations to be drawn.

Data Fields
t_symbol *	c_text	The text.
t_rgba	c_color	The color of the text.
t_efont	c_font	The font of the text.
t_rect	c_rect	The rectangle of the text.
t_symbol *	c_anchor	The anchor of the text.
t_symbol *	c_justify	The justification of the text.

struct t_egobj

The drawing object.

It contains the all the informations to be drawn.

Data Fields
egraphics_types	e_type	The type of the graphical object.
int	e_filled	The filled state of the graphical object.
t_symbol *	e_color	The color of the graphical object.
float	e_width	The line width of the graphical object.
t_pt *	e_points	The points of the graphical object.
long	e_npoints	The number of points of the graphical object.
float	e_roundness	The roundness of the graphical object.
t_efont	e_font	The font of the graphical object.
t_symbol *	e_anchor	The anchor of the graphical object.
t_symbol *	e_justify	The justification of the graphical object.
t_symbol *	e_text	The text of the graphical object.

struct t_elayer

The drawing layer.

It contains the all the informations and the graphical objects to be drawn.

Data Fields
t_object *	e_owner	The layer owner.
t_symbol *	e_name	The layer name.
t_symbol *	e_id	The layer canvas ID.
int	e_state	The layer state.
t_rect	e_rect	The layer size.
t_symbol *	e_color	The layer color.
int	e_line_width	The layer line width.
t_matrix	e_matrix	The layer matrix.
t_egobj	e_new_objects	The layer new object.
t_egobj *	e_objects	The layer objects.
long	e_number_objects	The number of layer objects.

Enumeration Type Documentation

enum elayer_flags

The flags that defines the status of a layer.

It define all possible the status of a layer.

Enumerator
EGRAPHICS_OPEN	Open.
EGRAPHICS_CLOSE	Closed.
EGRAPHICS_INVALID	Invalid.
EGRAPHICS_TODRAW	To be drawn.

enum etextanchor_flags

The flags that defines the text anchor.

It define all text anchor.

Enumerator
ETEXT_UP	Up and center.
ETEXT_UP_LEFT	Up anfd left.
ETEXT_UP_RIGHT	Up anfd right.
ETEXT_DOWN	Down and center.
ETEXT_DOWN_LEFT	Down anfd left.
ETEXT_DOWN_RIGHT	Down anfd right.
ETEXT_LEFT	Left.
ETEXT_RIGHT	right.
ETEXT_CENTER	Center.

enum etextwrap_flags

The flags that defines if the text should be wrapped.

It define true or false.

Enumerator
ETEXT_NOWRAP	False.
ETEXT_WRAP	True.

enum etextjustify_flags

The flags that define the text justification.

It define all text justification.

Enumerator
ETEXT_JLEFT	Left.
ETEXT_JRIGHT	Right.
ETEXT_JCENTER	Center.

enum egraphics_types

The types of graphical object.

It define all the graphical type.

Enumerator
E_GOBJ_INVALID	This type is invalid.
E_GOBJ_PATH	This is a path.
E_GOBJ_RECT	This is a rect.
E_GOBJ_ARC	This is an arc.
E_GOBJ_OVAL	This is an oval.
E_GOBJ_TEXT	This is a text.
E_GOBJ_IMAG	This is an image.

enum epath_types

The types of path.

It define all the path type.

Enumerator
E_PATH_MOVE	This type is move.
E_PATH_CURVE	This type is curve.