kjb::Polybezier_curve Class Reference

#include <m2_spline.h>

Inheritance diagram for kjb::Polybezier_curve:

Public Types
enum	Point_type { CURVE_POINT = 0, HANDLE_2_POINT = 1, HANDLE_1_POINT = 2 }

Public Member Functions
	Polybezier_curve (int dimension)
	Polybezier_curve (const std::vector< kjb::Vector > &control_points)
Polybezier_curve *	clone () const
	Processes an Option from program command-line arguments. More...
size_t	size () const
size_t	dimension () const
void	swap (Polybezier_curve &other)
kjb::Vector	evaluate (double u) const
kjb::Vector	gradient (double u) const
void	insert_curve_point (int index, const kjb::Vector &curve_pt)
void	insert (int index, const kjb::Vector &curve_pt, const kjb::Vector &handle_pt_1, const kjb::Vector &handle_pt_2)
void	set_curve_point (int index, const kjb::Vector &pt)
void	set_handle_point_1 (int index, const kjb::Vector &pt)
void	set_handle_point_2 (int index, const kjb::Vector &pt)
void	delete_curve_point (int index)
void	reverse ()
void	symmetrize_handle_1 (int index)
void	symmetrize_handle_2 (int index)
kjb::Vector &	get_curve_point (int index)
const kjb::Vector &	get_curve_point (int index) const
kjb::Vector &	get_handle_point_1 (int index)
const kjb::Vector &	get_handle_point_1 (int index) const
kjb::Vector &	get_handle_point_2 (int index)
const kjb::Vector &	get_handle_point_2 (int index) const
kjb::Vector &	get_control_point (int index)
const kjb::Vector &	get_control_point (int index) const
virtual Nurbs_curve	to_nurbs () const
	Convert to a mathematically equivalent nurbs curve. More...
Public Member Functions inherited from kjb::Cloneable
virtual	~Cloneable ()
	Deletes this Cloneable. More...

Static Public Member Functions
static void	decode_control_point (size_t i, size_t &curve_i, Point_type &point_type)
static size_t	encode_control_point (size_t curve_i, Point_type point_type)

Friends
bool	operator== (const Polybezier_curve &op1, const Polybezier_curve &op2)

Detailed Description

Sequence of cubic bezier curves of arbitrary dimension, connected end-to-end. In 2D, this is equivalent to paths in common graphics packages, and the API is designed to mimick this representation, using "handles" and "curve points" instead of the more generic "control points".

See Also

Gl_polybezier_curve

Author

Kyle Simek

Member Enumeration Documentation

enum kjb::Polybezier_curve::Point_type

Enumerator
CURVE_POINT
HANDLE_2_POINT
HANDLE_1_POINT

Constructor & Destructor Documentation

kjb::Polybezier_curve::Polybezier_curve

(

int

dimension

)

kjb::Polybezier_curve::Polybezier_curve

(

const std::vector< kjb::Vector > &

control_points

)

Member Function Documentation

Polybezier_curve * kjb::Polybezier_curve::clone ( ) const

virtual

Processes an Option from program command-line arguments.

Implements kjb::Cloneable.

void kjb::Polybezier_curve::decode_control_point ( size_t  i, size_t &  curve_i, Point_type &  point_type  )

static

void kjb::Polybezier_curve::delete_curve_point

(

int

index

)

size_t kjb::Polybezier_curve::dimension

(

)

const

size_t kjb::Polybezier_curve::encode_control_point ( size_t  curve_i, Point_type  point_type  )

static

Vector kjb::Polybezier_curve::evaluate ( double  u ) const

virtual

Warning

The current implementation of evaluate() currently converts to a nurbs object and then evaluates the nurbs object. As a result, this may be slower than expected.

Implements kjb::Spline_curve.

Vector & kjb::Polybezier_curve::get_control_point

(

int

index

)

const Vector & kjb::Polybezier_curve::get_control_point

(

int

index

)

const

Vector & kjb::Polybezier_curve::get_curve_point

(

int

index

)

const Vector & kjb::Polybezier_curve::get_curve_point

(

int

index

)

const

Vector & kjb::Polybezier_curve::get_handle_point_1

(

int

index

)

const Vector & kjb::Polybezier_curve::get_handle_point_1

(

int

index

)

const

Vector & kjb::Polybezier_curve::get_handle_point_2

(

int

index

)

const Vector & kjb::Polybezier_curve::get_handle_point_2

(

int

index

)

const

Vector kjb::Polybezier_curve::gradient ( double  u ) const

virtual

Implements kjb::Spline_curve.

void kjb::Polybezier_curve::insert	(	int	index,
		const kjb::Vector &	curve_pt,
		const kjb::Vector &	handle_pt_1,
		const kjb::Vector &	handle_pt_2
	)

void kjb::Polybezier_curve::insert_curve_point	(	int	index,
		const kjb::Vector &	curve_pt
	)

void kjb::Polybezier_curve::reverse

(

)

void kjb::Polybezier_curve::set_curve_point	(	int	index,
		const kjb::Vector &	pt
	)

void kjb::Polybezier_curve::set_handle_point_1	(	int	index,
		const kjb::Vector &	pt
	)

void kjb::Polybezier_curve::set_handle_point_2	(	int	index,
		const kjb::Vector &	pt
	)

size_t kjb::Polybezier_curve::size

(

)

const

void kjb::Polybezier_curve::swap

(

Polybezier_curve &

other

)

void kjb::Polybezier_curve::symmetrize_handle_1

(

int

index

)

set handle point based on location of 2nd handle point so curve is infinituely differentiable at the curve point

Set handle 1 to make symmetric to handle 2

Parameters

index

the index of the curve point corresponding to the handle to be set

void kjb::Polybezier_curve::symmetrize_handle_2

(

int

index

)

Set handle 2 to make symmetric to handle 1

Parameters

index

the index of the curve point corresponding to the handle to be set

Nurbs_curve kjb::Polybezier_curve::to_nurbs ( ) const

virtual

Convert to a mathematically equivalent nurbs curve.

Friends And Related Function Documentation

bool operator== ( const Polybezier_curve &  op1, const Polybezier_curve &  op2  )

friend

---

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

• /work/kobus/src/lib/m2_cpp/m2_spline.h
• /work/kobus/src/lib/m2_cpp/m2_spline.cpp