#include <ObjectTypes/BSplineSurface/BSplineSurfaceT.hh>

Public Types
typedef PointT	Point

typedef Point::value_type	Scalar

typedef std::vector< std::vector< Point > >	ControlNet

typedef std::vector< std::vector< unsigned char > >	PropertyNet

Public Member Functions
	BSplineSurfaceT (unsigned int _degm=3, unsigned int _degn=3)
	Constructor. More...

void	resize (unsigned int _m, unsigned int _n)
	Resizes the spline struct. More...

std::vector< Scalar > &	get_knots_m ()
	get the knotvector in m direction of the bspline surface

std::vector< Scalar > &	get_knots_n ()
	get the knotvector in m direction of the bspline surface

Knotvector	get_knotvector_m ()
	Get the knotvector in m direction.

Knotvector	get_knotvector_n ()
	Get the knotvector in n direction.

Knotvector *	get_knotvector_m_ref ()
	Get a reference to the knotvector in m direction.

Knotvector *	get_knotvector_n_ref ()
	Get a reference to the knotvector in n direction.

Scalar	get_knot_m (int _i)
	Get knot i in m direction. More...

Scalar	get_knot_n (int _i)
	Get knot i in n direction. More...

void	set_knots_m (std::vector< Scalar > _knots)
	Set the knotvector of the bspline surface in m direction. More...

void	set_knots_n (std::vector< Scalar > _knots)
	Set the knotvector of the bspline surface in n direction. More...

void	insert_knot_m (double _t)
	Insert a knot i in m direction without changing the surface. More...

void	insert_knot_n (double _t)
	Insert a knot i in n direction without changing the surface. More...

void	createKnots ()
	Creates interpolating knotvectors 0...0, 1, 2, ..., n...n.

void	set_degree (unsigned int _degm, unsigned int _degn)
	Sets the degree of the spline surface. More...

int	degree_m () const
	Returns the spline degree in m direction.

int	degree_n () const
	Returns the spline degree in n direction.

unsigned int	n_control_points_m () const
	Returns the number of controlpoints in m direction.

unsigned int	n_control_points_n () const
	Returns the number of controlpoints in n direction.

unsigned int	n_knots_m ()
	Returns the number of knots in m direction.

unsigned int	n_knots_n ()
	Returns the number of knots in n direction.

void	reset_control_net ()
	Clears the control net.

Point &	get_control_point (unsigned int _m, unsigned int _n)
	Returns a reference to the control point (m, n) More...

Point &	operator() (unsigned int _m, unsigned int _n)
	Returns a reference to the control point (m, n) More...

const Point &	operator() (unsigned int _m, unsigned int _n) const
	Returns a const reference to the control point (m, n) More...

Point &	operator() (Vec2i _param)
	Returns a reference to the control point (m, n) More...

const Point &	operator() (Vec2i _param) const
	Returns a const reference to the control point (m, n) More...

void	get_vector_m (std::vector< Point > &_control_polygon, unsigned int _m)
	Returns an n control point vector. More...

void	get_vector_n (std::vector< Point > &_control_polygon, unsigned int _n)
	Returns an m ctrPointVector. More...

void	add_vector_m (const std::vector< Point > &_control_polygon)
	Adds a control point n-vector. More...

void	add_vector_n (const std::vector< Point > &_control_polygon)
	Adds a control point m-vector. More...

void	insert_vector_m (const std::vector< Point > &_control_polygon, unsigned int _m)
	Inserts an n control point vector. More...

void	insert_vector_n (const std::vector< Point > &_control_polygon, unsigned int _n)
	Inserts an m control point vector. More...

void	delete_vector_m (unsigned int _m)
	Deletes an n control point vector. More...

void	delete_vector_n (unsigned int _n)
	Deletes an m control point vector. More...

Point	surfacePoint (double _u, double _v)
	Evaluates a spline surface at parameters _u and _v. More...

void	surfacePointNormal (Point &_pt, Point &_normal, double _u, double _v)
	Evaluates a spline surface at parameters _u and _v. More...

Point	surfacePoint_rec (double _u, double _v)
	Evaluates a spline surface at parameters _u and _v. More...

Point	derivativeSurfacePoint (double _u, double _v, int _derm, int _dern)
	Returns the _derm'th derivative of a spline surface. More...

Point	normalSurfacePoint (double _u, double _v)
	Returns the normal of a spline surface. More...

Scalar	basisFunction (Knotvector &_knotvector, int _i, int _n, double _t)
	A Spline Basis Function. More...

Scalar	derivativeBasisFunction (Knotvector &_knotvector, int _i, int _n, double _t, int _der)
	Derivative of a Spline Basis Function. More...

ACG::Vec2i	spanm (double _t)
	Returns the basis functions which are unequal to zero at parameter u. More...

ACG::Vec2i	spann (double _t)
	Returns the basis functions which are unequal to zero at parameter v. More...

ACG::Vec2i	interval_m (double _t)
	Returns the index of the knots u and u+1 such that t in [u, u+1) More...

ACG::Vec2i	interval_n (double _t)
	Returns the index of the knots v and v+1 such that t in [v, v+1) More...

Scalar	loweru ()
	Returns the lower u parameter.

Scalar	upperu ()
	Returns the upper u parameter.

Scalar	lowerv ()
	Returns the lower v parameter.

Scalar	upperv ()
	Returns the upper v parameter.

void	request_controlpoint_selections ()
	request control point selection property

void	request_edge_selections ()
	request edge selection property

void	release_controlpoint_selections ()
	release control point selection property

void	release_edge_selections ()
	release edge selection property

bool	controlpoint_selections_available () const
	Check if control point selection property is available.

bool	edge_selections_available () const
	Check if edge selection property is available.

unsigned char &	controlpoint_selection (unsigned int _i, unsigned int _j)

const unsigned char &	controlpoint_selection (unsigned int _i, unsigned int _j) const

unsigned char &	edge_selection (unsigned int _i, unsigned int _j)

const unsigned char &	edge_selection (unsigned int _i, unsigned int _j) const

void	select_controlpoint (unsigned int _iIdx, unsigned int _jIdx)

void	deselect_controlpoint (unsigned int _iIdx, unsigned int _jIdx)

bool	controlpoint_selected (unsigned int _iIdx, unsigned int _jIdx) const

Private Member Functions
template<class PropT >
void	request_prop (unsigned int &_ref_count, PropT &_prop)

template<class PropT >
void	release_prop (unsigned int &_ref_count, PropT &_prop)

Private Attributes
unsigned int	dimm_
	number of control points in m direction

unsigned int	dimn_
	number of control points in n direction

unsigned int	degree_m_
	Spline degree in m direction.

unsigned int	degree_n_
	Spline degree in n direction.

Knotvector	knotvector_m_
	Knotvector in m direction.

Knotvector	knotvector_n_
	Knotvector in n direction.

ControlNet	control_net_

PropertyNet	cpselections_
	list of control point properties

PropertyNet	eselections_
	list of edge properties

unsigned int	ref_count_cpselections_

unsigned int	ref_count_eselections_

Detailed Description

template<class PointT>
class ACG::BSplineSurfaceT< PointT >

Brief Description.

A more elaborate description follows.

Definition at line 82 of file BSplineSurfaceT.hh.

Constructor & Destructor Documentation

◆ BSplineSurfaceT()

template<class PointT >

ACG::BSplineSurfaceT< PointT >::BSplineSurfaceT	(	unsigned int	_degm = `3`,
		unsigned int	_degn = `3`
	)

explicit

Constructor.

Parameters

_degm	Degree in m direction
_degn	Degree in n direction

Definition at line 75 of file BSplineSurfaceT_impl.hh.

Member Function Documentation

◆ add_vector_m()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::add_vector_m ( const std::vector< Point > & _control_polygon )

Adds a control point n-vector.

Parameters

_control_polygon Additional control point vector

Definition at line 187 of file BSplineSurfaceT_impl.hh.

◆ add_vector_n()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::add_vector_n ( const std::vector< Point > & _control_polygon )

Adds a control point m-vector.

Parameters

_control_polygon Additional control point vector

Definition at line 197 of file BSplineSurfaceT_impl.hh.

◆ basisFunction()

template<class PointT >

BSplineSurfaceT< PointT >::Scalar ACG::BSplineSurfaceT< PointT >::basisFunction	(	Knotvector &	_knotvector,
		int	_i,
		int	_n,
		double	_t
	)

A Spline Basis Function.

Parameters

_knotvector	the knotvector
_i	the i'th basis function
_n	the spline degree
_t	the parameter Returns N_i^p(_u)

Definition at line 604 of file BSplineSurfaceT_impl.hh.

◆ delete_vector_m()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::delete_vector_m ( unsigned int _m )

Deletes an n control point vector.

Parameters

_m	the m'th pointvector

Todo:: Improve deletion routine for control points and knots!

Definition at line 275 of file BSplineSurfaceT_impl.hh.

◆ delete_vector_n()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::delete_vector_n ( unsigned int _n )

Deletes an m control point vector.

Parameters

_n	the n'th pointvector

Todo:: : Improve deletion routine for control points and knots!

Definition at line 302 of file BSplineSurfaceT_impl.hh.

◆ derivativeBasisFunction()

template<class PointT >

BSplineSurfaceT< PointT >::Scalar ACG::BSplineSurfaceT< PointT >::derivativeBasisFunction	(	Knotvector &	_knotvector,
		int	_i,
		int	_n,
		double	_t,
		int	_der
	)

Derivative of a Spline Basis Function.

Parameters

_knotvector	the knotvector
_i	the i'th basis function
_n	the spline degree
_t	the parameter
_der	the _der'th derivative

Definition at line 692 of file BSplineSurfaceT_impl.hh.

◆ derivativeSurfacePoint()

template<class PointT >

PointT ACG::BSplineSurfaceT< PointT >::derivativeSurfacePoint	(	double	_u,
		double	_v,
		int	_derm,
		int	_dern
	)

Returns the _derm'th derivative of a spline surface.

Parameters

_u	the parameter in u direction
_v	the parameter in v direction
_derm	the _derm'th derivative in m
_dern	the _dern'th derivative in n

Returns: the derivative

Definition at line 642 of file BSplineSurfaceT_impl.hh.

◆ get_control_point()

template<class PointT>

Point& ACG::BSplineSurfaceT< PointT >::get_control_point	(	unsigned int	_m,
		unsigned int	_n
	)

inline

Returns a reference to the control point (m, n)

Parameters

_m,_n the control point index

Definition at line 193 of file BSplineSurfaceT.hh.

◆ get_knot_m()

template<class PointT>

Scalar ACG::BSplineSurfaceT< PointT >::get_knot_m ( int _i )

inline

Get knot i in m direction.

Parameters

_i	Knot index

Returns: Knot i

Definition at line 127 of file BSplineSurfaceT.hh.

◆ get_knot_n()

template<class PointT>

Scalar ACG::BSplineSurfaceT< PointT >::get_knot_n ( int _i )

inline

Get knot i in n direction.

Parameters

_i	Knot index

Returns: Knot i

Definition at line 134 of file BSplineSurfaceT.hh.

◆ get_vector_m()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::get_vector_m	(	std::vector< Point > &	_control_polygon,
		unsigned int	_m
	)

Returns an n control point vector.

Parameters

_m	the m'th pointvector
_control_polygon	the returned pointvector

Definition at line 333 of file BSplineSurfaceT_impl.hh.

◆ get_vector_n()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::get_vector_n	(	std::vector< Point > &	_control_polygon,
		unsigned int	_n
	)

Returns an m ctrPointVector.

Parameters

_n	the n'th pointvector
_control_polygon	the returned pointvector

Definition at line 344 of file BSplineSurfaceT_impl.hh.

◆ insert_knot_m()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::insert_knot_m ( double _t )

Insert a knot i in m direction without changing the surface.

Parameters

_t	Parameter value

Definition at line 380 of file BSplineSurfaceT_impl.hh.

◆ insert_knot_n()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::insert_knot_n ( double _t )

Insert a knot i in n direction without changing the surface.

Parameters

_t	Parameter value

Definition at line 424 of file BSplineSurfaceT_impl.hh.

◆ insert_vector_m()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::insert_vector_m	(	const std::vector< Point > &	_control_polygon,
		unsigned int	_m
	)

Inserts an n control point vector.

Parameters

_m	the position in m direction
_control_polygon	the pointvector to be inserted

Definition at line 207 of file BSplineSurfaceT_impl.hh.

◆ insert_vector_n()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::insert_vector_n	(	const std::vector< Point > &	_control_polygon,
		unsigned int	_n
	)

Inserts an m control point vector.

Parameters

_n	the position in n direction
_control_polygon	the pointvector to be inserted

Definition at line 240 of file BSplineSurfaceT_impl.hh.

◆ interval_m()

template<class PointT >

ACG::Vec2i ACG::BSplineSurfaceT< PointT >::interval_m ( double _t )

Returns the index of the knots u and u+1 such that t in [u, u+1)

Parameters

_t	the parameter

Definition at line 777 of file BSplineSurfaceT_impl.hh.

◆ interval_n()

template<class PointT >

ACG::Vec2i ACG::BSplineSurfaceT< PointT >::interval_n ( double _t )

Returns the index of the knots v and v+1 such that t in [v, v+1)

Parameters

_t	the parameter

Definition at line 797 of file BSplineSurfaceT_impl.hh.

◆ normalSurfacePoint()

template<class PointT >

PointT ACG::BSplineSurfaceT< PointT >::normalSurfacePoint	(	double	_u,
		double	_v
	)

Returns the normal of a spline surface.

Parameters

_u	the parameter in u direction
_v	the parameter in v direction

Returns: the normal

Definition at line 674 of file BSplineSurfaceT_impl.hh.

◆ operator()() [1/4]

template<class PointT>

Point& ACG::BSplineSurfaceT< PointT >::operator()	(	unsigned int	_m,
		unsigned int	_n
	)

inline

Returns a reference to the control point (m, n)

Parameters

_m,_n the control point index

Definition at line 203 of file BSplineSurfaceT.hh.

◆ operator()() [2/4]

template<class PointT>

const Point& ACG::BSplineSurfaceT< PointT >::operator()	(	unsigned int	_m,
		unsigned int	_n
	)		const

inline

Returns a const reference to the control point (m, n)

Parameters

_m,_n the control point index

Definition at line 213 of file BSplineSurfaceT.hh.

◆ operator()() [3/4]

template<class PointT>

Point& ACG::BSplineSurfaceT< PointT >::operator() ( Vec2i _param )

inline

Returns a reference to the control point (m, n)

Parameters

_param the control point index

Definition at line 223 of file BSplineSurfaceT.hh.

◆ operator()() [4/4]

template<class PointT>

const Point& ACG::BSplineSurfaceT< PointT >::operator() ( Vec2i _param ) const

inline

Returns a const reference to the control point (m, n)

Parameters

_param the control point index

Definition at line 233 of file BSplineSurfaceT.hh.

◆ resize()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::resize	(	unsigned int	_m,
		unsigned int	_n
	)

Resizes the spline struct.

You usually shoudn't have to care about this I will probably make it private...

Parameters

_m	size in m direction
_n	size in n direction

Definition at line 125 of file BSplineSurfaceT_impl.hh.

◆ set_degree()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::set_degree	(	unsigned int	_degm,
		unsigned int	_degn
	)

Sets the degree of the spline surface.

Parameters

_degm	Degree in m direction
_degn	Degree in n direction

Definition at line 176 of file BSplineSurfaceT_impl.hh.

◆ set_knots_m()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::set_knots_m ( std::vector< Scalar > _knots )

Set the knotvector of the bspline surface in m direction.

Parameters

_knots The new knots

Definition at line 358 of file BSplineSurfaceT_impl.hh.

◆ set_knots_n()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::set_knots_n ( std::vector< Scalar > _knots )

Set the knotvector of the bspline surface in n direction.

Parameters

_knots The new knots

Definition at line 369 of file BSplineSurfaceT_impl.hh.

◆ spanm()

template<class PointT >

ACG::Vec2i ACG::BSplineSurfaceT< PointT >::spanm ( double _t )

Returns the basis functions which are unequal to zero at parameter u.

Parameters

_t	the parameter

Definition at line 757 of file BSplineSurfaceT_impl.hh.

◆ spann()

template<class PointT >

ACG::Vec2i ACG::BSplineSurfaceT< PointT >::spann ( double _t )

Returns the basis functions which are unequal to zero at parameter v.

Parameters

_t	the parameter

Definition at line 767 of file BSplineSurfaceT_impl.hh.

◆ surfacePoint()

template<class PointT >

PointT ACG::BSplineSurfaceT< PointT >::surfacePoint	(	double	_u,
		double	_v
	)

Evaluates a spline surface at parameters _u and _v.

Parameters

_u	the parameter in u direction
_v	the parameter in v direction

Returns: the surface point

Definition at line 470 of file BSplineSurfaceT_impl.hh.

◆ surfacePoint_rec()

template<class PointT >

PointT ACG::BSplineSurfaceT< PointT >::surfacePoint_rec	(	double	_u,
		double	_v
	)

Evaluates a spline surface at parameters _u and _v.

Slower version of surfacePoint(), which evaluates the basis functions recursively.

Parameters

_u	the parameter in u direction
_v	the parameter in v direction

Returns: the surface point

Definition at line 571 of file BSplineSurfaceT_impl.hh.

◆ surfacePointNormal()

template<class PointT >

void ACG::BSplineSurfaceT< PointT >::surfacePointNormal	(	Point &	_pt,
		Point &	_normal,
		double	_u,
		double	_v
	)

Evaluates a spline surface at parameters _u and _v.

Computes surface point and normal at the same time (optimized).

Parameters

_point	point output
_normal	normal output
_u	the parameter in u direction
_v	the parameter in v direction

Returns: the surface point

Definition at line 513 of file BSplineSurfaceT_impl.hh.

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

Type-BSpline/ObjectTypes/BSplineSurface/BSplineSurfaceT.hh
Type-BSpline/ObjectTypes/BSplineSurface/BSplineSurfaceT_impl.hh

Public Types

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

template<class PointT> class ACG::BSplineSurfaceT< PointT >

Constructor & Destructor Documentation

◆ BSplineSurfaceT()

Member Function Documentation

◆ add_vector_m()

◆ add_vector_n()

◆ basisFunction()

◆ delete_vector_m()

◆ delete_vector_n()

◆ derivativeBasisFunction()

◆ derivativeSurfacePoint()

◆ get_control_point()

◆ get_knot_m()

◆ get_knot_n()

◆ get_vector_m()

◆ get_vector_n()

◆ insert_knot_m()

◆ insert_knot_n()

◆ insert_vector_m()

◆ insert_vector_n()

◆ interval_m()

◆ interval_n()

◆ normalSurfacePoint()

◆ operator()() [1/4]

◆ operator()() [2/4]

◆ operator()() [3/4]

◆ operator()() [4/4]

◆ resize()

◆ set_degree()

◆ set_knots_m()

◆ set_knots_n()

◆ spanm()

◆ spann()

◆ surfacePoint()

◆ surfacePoint_rec()

◆ surfacePointNormal()

template<class PointT>
class ACG::BSplineSurfaceT< PointT >