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Inheritance diagram for fawkes::Bezier:

Public Member Functions
	Bezier ()
	Constructor.
	Bezier (const std::vector< HomPoint > &control_points)
	Constructor.
	Bezier (const Bezier &b)
	Copy constructor.
	~Bezier ()
	Destructor.
void	set_control_points (const std::vector< HomPoint > &control_points)
	Set the control points.
void	set_control_point (unsigned int index, const HomPoint &control_point)
	Replace a specific control point.
std::vector< HomPoint >	get_control_points () const
	Get the control points.
HomPoint	get_control_point (unsigned int i) const
	Get a specific control point.
unsigned int	degree () const
	Get the degree of the polynom.
HomPoint	eval (float t)
	Evalutate the polynom for a given t.
HomVector	tangent_at_t (float t)
	Compute the tangent vector at position t.
HomVector	tangent_at_point (unsigned int index)
	Compute the tangent vector at the specified control point.
void	subdivide (float t, Bezier &c, Bezier &d)
	Subdivide the curve into two polynome of the same degree.
const std::vector< HomPoint > &	approximate (unsigned int num_subdivisions=4)
	Approximate the curve with points.
Public Member Functions inherited from fawkes::Transformable
	Transformable ()
	Constructor.
virtual	~Transformable ()
	Destructor.

Protected Member Functions
virtual void	register_primitives ()
	Here, a derived class should register its primitives (HomPoints and HomVectors) by calling add_primitive for each of those.
virtual void	post_transform ()
	This method is called after the primitives are transformed.
Protected Member Functions inherited from fawkes::Transformable
void	transform (const HomTransform &t)
	Apply the transform to all registered primitives and call the post_transform() method.
void	add_primitive (HomCoord *c)
	Add a primitive to the list of primitives that is transformed.
void	clear_primitives ()
	Clear the list of primitives.

Detailed Description

A Bezier curve class.

Author:: Daniel Beck

Definition at line 34 of file bezier.h.

Constructor & Destructor Documentation

fawkes::Bezier::Bezier ( )

Constructor.

Definition at line 38 of file bezier.cpp.

fawkes::Bezier::Bezier ( const std::vector< HomPoint > & control_points )

Constructor.

Parameters:

control_points the control points for the Bezier curve

Definition at line 50 of file bezier.cpp.

References register_primitives().

fawkes::Bezier::Bezier ( const Bezier & b )

Copy constructor.

Parameters:

b	another Bezier curve

Definition at line 67 of file bezier.cpp.

References fawkes::Transformable::clear_primitives(), and register_primitives().

fawkes::Bezier::~Bezier ( )

Destructor.

Definition at line 82 of file bezier.cpp.

Member Function Documentation

const vector< HomPoint > & fawkes::Bezier::approximate ( unsigned int num_subdivisions = 4 )

Approximate the curve with points.

Parameters:

num_subdivisions the number of subdivisions that is performed

Returns:: the point approximating the curve

Definition at line 253 of file bezier.cpp.

References subdivide().

Referenced by fawkes::BezierDrawer::draw().

unsigned int fawkes::Bezier::degree ( ) const

Get the degree of the polynom.

Returns:: the degree of the polynom

Definition at line 167 of file bezier.cpp.

HomPoint fawkes::Bezier::eval ( float t )

Evalutate the polynom for a given t.

Parameters:

t	a value between 0.0 and 1.0

Returns:: the corresponding point on the curve

Definition at line 177 of file bezier.cpp.

HomPoint fawkes::Bezier::get_control_point ( unsigned int i ) const

Get a specific control point.

Parameters:

i	the index of the control point

Returns:: control point

Definition at line 155 of file bezier.cpp.

std::vector< HomPoint > fawkes::Bezier::get_control_points ( ) const

Get the control points.

Returns:: a copy of the control points

Definition at line 145 of file bezier.cpp.

void fawkes::Bezier::post_transform ( )

protectedvirtual

This method is called after the primitives are transformed.

Any additional updates that need to be done should be done here.

Implements fawkes::Transformable.

Definition at line 367 of file bezier.cpp.

void fawkes::Bezier::register_primitives ( )

protectedvirtual

Here, a derived class should register its primitives (HomPoints and HomVectors) by calling add_primitive for each of those.

Implements fawkes::Transformable.

Definition at line 354 of file bezier.cpp.

References fawkes::Transformable::add_primitive().

Referenced by Bezier(), set_control_point(), and set_control_points().

void fawkes::Bezier::set_control_point	(	unsigned int	index,
		const HomPoint &	control_point
	)

Replace a specific control point.

Parameters:

index	the index of the control point
control_point	the replacement control point

Definition at line 130 of file bezier.cpp.

References fawkes::Transformable::clear_primitives(), and register_primitives().

void fawkes::Bezier::set_control_points ( const std::vector< HomPoint > & control_points )

Set the control points.

Parameters:

control_points the new control points

Definition at line 94 of file bezier.cpp.

References fawkes::Transformable::clear_primitives(), and register_primitives().

Referenced by subdivide().

void fawkes::Bezier::subdivide	(	float	t,
		Bezier &	c,
		Bezier &	d
	)

Subdivide the curve into two polynome of the same degree.

Parameters:

t	determines the point where the curve is divided
c	the Bezier for the part [0, t]
d	the Bezier for the part [t, 1]

Definition at line 222 of file bezier.cpp.

References set_control_points().

Referenced by approximate().

HomVector fawkes::Bezier::tangent_at_point ( unsigned int index )

Compute the tangent vector at the specified control point.

Parameters:

index the index of the control point

Returns:: the tangent vector

Definition at line 205 of file bezier.cpp.

References tangent_at_t().

HomVector fawkes::Bezier::tangent_at_t ( float t )

Compute the tangent vector at position t.

Parameters:

t	the curve parameter

Returns:: the tangent vector

Definition at line 190 of file bezier.cpp.

Referenced by tangent_at_point().

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

src/libs/geometry/bezier.h
src/libs/geometry/bezier.cpp

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation