DXF arc entity class. More...

#include <mydxfarc.hpp>

Inheritance diagram for MyDXFArc:

Public Member Functions
	MyDXFArc ()
	Default constructor. More...

	MyDXFArc (class MyDXFFile *dxf)
	Construct arc entity by reading from DXF file. More...

virtual	~MyDXFArc ()
	Virtual destructor. More...

virtual MyDXFArc *	copy (void) const
	Get a new copy of entity. More...

virtual void	explode (class MyDXFEntities ent, MyDXFFile dxf, const Transformation *t) const
	Explode into entities. More...

virtual void	write (class MyDXFFile *dxf, std::ofstream &ostr)
	Write dxf file to stream. More...

virtual EntityType	get_type (void) const
	Get entity type. More...

Vec3D	center (void) const
	Get center point of arc. More...

double	radius (void) const
	Get radius of arc. More...

virtual Vec3D	start (void) const
	Get start point of path entity. More...

virtual Vec3D	end (void) const
	Get end point of path entity. More...

void	set_pc (const Vec3D &pc)
	Set center point. More...

void	set_r (double r)
	Set radius. More...

void	set_ang1 (double ang1)
	Set start angle. More...

void	set_ang2 (double ang2)
	Set end angle. More...

double	get_ang1 (void) const
	Get start angle. More...

double	get_ang2 (void) const
	Get end angle. More...

void	set_center_and_ends (const Vec3D &c, const Vec3D &s, const Vec3D &e)
	Set arc according to center and end points. More...

void	set_center_point (const Vec3D &s, const Vec3D &e)
	Set arc according to end points. More...

virtual void	set_start (const Vec3D &s)
	Set start point of path entity. More...

virtual void	set_end (const Vec3D &e)
	Set end point of path entity. More...

virtual int	ray_cross (double x, double y) const
	Check for ray crossing. More...

bool	geom_same (const MyDXFArc &arc, double eps=1.0e-6) const
	Check if two entities are geometrically same. More...

virtual void	plot (const class MyDXFFile dxf, cairo_t cairo, const Transformation *t, const double range[4]) const
	Plot entity with cairo. More...

virtual void	get_bbox (Vec3D &min, Vec3D &max, const class MyDXFFile dxf, const Transformation t) const
	Return bounding box of entity. More...

virtual void	scale (class MyDXFFile *dxf, double s)
	Scale entity by factor s. More...

virtual void	translate (class MyDXFFile *dxf, const Vec3D &dx)
	Translate entity by dx. More...

virtual void	rotate_z (class MyDXFFile *dxf, double a)
	Rotate entity around origin. More...

virtual void	debug_print (std::ostream &os) const
	Print debugging information to stream os. More...

Public Member Functions inherited from MyDXFPathEntity
virtual	~MyDXFPathEntity ()
	Virtual destructor. More...

Public Member Functions inherited from MyDXFEntity
virtual	~MyDXFEntity ()
	Virtual destructor. More...

void	set_layer (const std::string &layer)
	Set layer. More...

std::string	get_layer (void) const
	Get layer. More...

void	set_handle (const std::string &handle)
	Set entity handle. More...

std::string	get_handle (void) const
	Get entity handle. More...

Additional Inherited Members
Protected Member Functions inherited from MyDXFPathEntity
	MyDXFPathEntity (const MyDXFEntity &ent)

Protected Member Functions inherited from MyDXFEntity
void	write_common (class MyDXFFile *dxf, std::ofstream &ostr)

void	process_group (class MyDXFFile *dxf)

void	constructor_debug_print (void) const

void	debug_print_base (std::ostream &os) const

Static Protected Member Functions inherited from MyDXFEntity
static void	bbox_ppoint (Vec3D &min, Vec3D &max, const Vec3D &p)
	Propose a point to bounding box. More...

Protected Attributes inherited from MyDXFEntity
std::string	_handle

std::string	_layer

Detailed Description

DXF arc entity class.

An arc entity is defined with a center point of the arc, radius, starting angle and ending angle.

Constructor & Destructor Documentation

◆ MyDXFArc() [1/2]

MyDXFArc::MyDXFArc ( )

inline

Default constructor.

◆ MyDXFArc() [2/2]

MyDXFArc::MyDXFArc ( class MyDXFFile * dxf )

Construct arc entity by reading from DXF file.

#define DEBUG_INSIDE_LOOP 1

◆ ~MyDXFArc()

virtual MyDXFArc::~MyDXFArc ( )

inlinevirtual

Virtual destructor.

Member Function Documentation

◆ center()

Vec3D MyDXFArc::center ( void ) const

inline

Get center point of arc.

◆ copy()

virtual MyDXFArc* MyDXFArc::copy ( void ) const

inlinevirtual

Get a new copy of entity.

Implements MyDXFEntity.

◆ debug_print()

void MyDXFArc::debug_print ( std::ostream & os ) const

virtual

Print debugging information to stream os.

Implements MyDXFEntity.

◆ end()

virtual Vec3D MyDXFArc::end ( void ) const

inlinevirtual

Get end point of path entity.

Implements MyDXFPathEntity.

◆ explode()

void MyDXFArc::explode	(	class MyDXFEntities *	ent,
		MyDXFFile *	dxf,
		const Transformation *	t
	)		const

virtual

Explode into entities.

Break entity into atomic entities and tranform entities them with tranformation t. Add the tranformed entities to the database ent.

Implements MyDXFEntity.

◆ geom_same()

bool MyDXFArc::geom_same	(	const MyDXFArc &	arc,
		double	eps = `1.0e-6`
	)		const

Check if two entities are geometrically same.

Checks if entity a is the geometrically same as entity b within error limit eps.

◆ get_ang1()

double MyDXFArc::get_ang1 ( void ) const

inline

Get start angle.

◆ get_ang2()

double MyDXFArc::get_ang2 ( void ) const

inline

Get end angle.

◆ get_bbox()

void MyDXFArc::get_bbox	(	Vec3D &	min,
		Vec3D &	max,
		const class MyDXFFile *	dxf,
		const Transformation *	t
	)		const

virtual

Return bounding box of entity.

Implements MyDXFEntity.

◆ get_type()

virtual EntityType MyDXFArc::get_type ( void ) const

inlinevirtual

Get entity type.

Implements MyDXFEntity.

◆ plot()

void MyDXFArc::plot	(	const class MyDXFFile *	dxf,
		cairo_t *	cairo,
		const Transformation *	t,
		const double	range[4]
	)		const

virtual

Plot entity with cairo.

Plot the entity using the transformation from from the object space to cairo coordinates. The visible range is specified by range (xmin,ymin,xmax,ymax) in cairo coordinates.

Implements MyDXFEntity.

◆ radius()

double MyDXFArc::radius ( void ) const

inline

Get radius of arc.

◆ ray_cross()

int MyDXFArc::ray_cross	(	double	x,
		double	y
	)		const

virtual

Check for ray crossing.

Check if ray going from point (x,y) downwards (negative y direction) crosses the entity. Return 1 if crosses odd number of times and 0 if even number of times. Return 2 in case of exact crossing at boundaries. This function is used as a subroutine to inside_loop().

Implements MyDXFPathEntity.

◆ rotate_z()

void MyDXFArc::rotate_z	(	class MyDXFFile *	dxf,
		double	a
	)

virtual

Rotate entity around origin.

Rotate for a radians.

Implements MyDXFEntity.

◆ scale()

void MyDXFArc::scale	(	class MyDXFFile *	dxf,
		double	s
	)

virtual

Scale entity by factor s.

Implements MyDXFEntity.

◆ set_ang1()

void MyDXFArc::set_ang1 ( double ang1 )

Set start angle.

◆ set_ang2()

void MyDXFArc::set_ang2 ( double ang2 )

Set end angle.

◆ set_center_and_ends()

void MyDXFArc::set_center_and_ends	(	const Vec3D &	c,
		const Vec3D &	s,
		const Vec3D &	e
	)

Set arc according to center and end points.

End point is only used for the angle.

◆ set_center_point()

void MyDXFArc::set_center_point	(	const Vec3D &	s,
		const Vec3D &	e
	)

Set arc according to end points.

Resets the center point and angles according to starting point s and ending point e. Arc is assumed to go in counter-clockwise direction from start to end. Radius of arc is kept constant if distance from s to e is less than double the radius. Otherwise the center point is set to the middle of start and end and the radius is set to half of the distance of start to end.

◆ set_end()

void MyDXFArc::set_end ( const Vec3D & e )

virtual

Set end point of path entity.

Implements MyDXFPathEntity.

◆ set_pc()

void MyDXFArc::set_pc ( const Vec3D & pc )

inline

Set center point.

◆ set_r()

void MyDXFArc::set_r ( double r )

inline

Set radius.

◆ set_start()

void MyDXFArc::set_start ( const Vec3D & s )

virtual

Set start point of path entity.

Implements MyDXFPathEntity.

◆ start()

virtual Vec3D MyDXFArc::start ( void ) const

inlinevirtual

Get start point of path entity.

Implements MyDXFPathEntity.

◆ translate()

void MyDXFArc::translate	(	class MyDXFFile *	dxf,
		const Vec3D &	dx
	)

virtual

Translate entity by dx.

Implements MyDXFEntity.

◆ write()

void MyDXFArc::write	(	class MyDXFFile *	dxf,
		std::ofstream &	ostr
	)

virtual

Write dxf file to stream.

Implements MyDXFEntity.

The documentation for this class was generated from the following files:

mydxfarc.hpp
mydxfarc.cpp

Navigation

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MyDXFArc() [1/2]

◆ MyDXFArc() [2/2]

◆ ~MyDXFArc()

Member Function Documentation

◆ center()

◆ copy()

◆ debug_print()

◆ end()

◆ explode()

◆ geom_same()

◆ get_ang1()

◆ get_ang2()

◆ get_bbox()

◆ get_type()

◆ plot()

◆ radius()

◆ ray_cross()

◆ rotate_z()

◆ scale()

◆ set_ang1()

◆ set_ang2()

◆ set_center_and_ends()

◆ set_center_point()

◆ set_end()

◆ set_pc()

◆ set_r()

◆ set_start()

◆ start()

◆ translate()

◆ write()