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CurveFitter Class Reference

#include <curveFitter.h>

List of all members.

Public Types

typedef pvector< DataPoint > Data

Public Member Functions

CurveFitter ()

~CurveFitter ()

void reset ()

Removes all the data points previously added to the CurveFitter, and initializes it for a new curve.

void add_xyz (float t, const LVecBase3f &xyz)

Adds a single sample xyz.

void add_hpr (float t, const LVecBase3f &hpr)

Adds a single sample hpr.

void add_xyz_hpr (float t, const LVecBase3f &xyz, const LVecBase3f &hpr)

Adds a single sample xyz & hpr simultaneously.

int get_num_samples () const

Returns the number of sample points that have been added.

float get_sample_t (int n) const

Returns the parametric value of the nth sample added.

LVecBase3f get_sample_xyz (int n) const

Returns the point in space of the nth sample added.

LVecBase3f get_sample_hpr (int n) const

Returns the orientation of the nth sample added.

LVecBase3f get_sample_tangent (int n) const

Returns the tangent associated with the nth sample added.

void remove_samples (int begin, int end)

Eliminates all samples from index begin, up to but not including index end, from the database.

void sample (ParametricCurveCollection *curves, int count)

Generates a series of data points by sampling the given curve (or xyz/hpr curves) the indicated number of times.

void wrap_hpr ()

Resets each HPR data point so that the maximum delta between any two consecutive points is 180 degrees, which should prevent incorrect HPR wrapping.

void sort_points ()

Sorts all the data points in order by parametric time, in case they were added in an incorrect order.

void desample (float factor)

Removes sample points in order to reduce the complexity of a sampled curve.

void compute_tangents (float scale)

Once a set of points has been built, and prior to calling MakeHermite() or MakeNurbs(), ComputeTangents() must be called to set up the tangents correctly (unless the tangents were defined as the points were added).

PointerTo< ParametricCurveCollection > make_hermite () const

Converts the current set of data points into a Hermite curve.

PointerTo< ParametricCurveCollection > make_nurbs () const

Converts the current set of data points into a NURBS curve.

void output (ostream &out) const

void write (ostream &out) const

Static Public Member Functions

TypeHandle get_class_type ()

void init_type ()

Public Attributes

Data _data

bool _got_xyz

bool _got_hpr

Static Private Attributes

TypeHandle _type_handle

Member Typedef Documentation

typedef pvector<DataPoint> CurveFitter::Data

Definition at line 87 of file curveFitter.h.

Constructor & Destructor Documentation

CurveFitter::CurveFitter ( )

Definition at line 42 of file curveFitter.cxx.

CurveFitter::~CurveFitter ( )

Definition at line 55 of file curveFitter.cxx.
References _data.

Member Function Documentation

void CurveFitter::add_hpr ( float t,

const LVecBase3f & hpr

)

Adds a single sample hpr.

Definition at line 99 of file curveFitter.cxx.
References _data, _got_hpr, and _got_xyz.

void CurveFitter::add_xyz ( float t,

const LVecBase3f & xyz

)

Adds a single sample xyz.

Definition at line 82 of file curveFitter.cxx.
References _data, _got_hpr, CurveFitter::DataPoint::_hpr, CurveFitter::DataPoint::_t, and t.

void CurveFitter::add_xyz_hpr ( float t,

const LVecBase3f & xyz,

const LVecBase3f & hpr

)

Adds a single sample xyz & hpr simultaneously.

Definition at line 116 of file curveFitter.cxx.
References _data, and nassertr.

void CurveFitter::compute_tangents ( float scale )

Once a set of points has been built, and prior to calling MakeHermite() or MakeNurbs(), ComputeTangents() must be called to set up the tangents correctly (unless the tangents were defined as the points were added).

Definition at line 368 of file curveFitter.cxx.
References _data, HC_SMOOTH, HermiteCurve::insert_cv(), PCT_HPR, PCT_XYZ, PT, ParametricCurve::set_curve_type(), HermiteCurve::set_cv_in(), HermiteCurve::set_cv_out(), HermiteCurve::set_cv_point(), and HermiteCurve::set_cv_type().

void CurveFitter::desample ( float factor )

Removes sample points in order to reduce the complexity of a sampled curve.
Keeps one out of every factor samples. Also keeps the first and the last samples.
Definition at line 331 of file curveFitter.cxx.
References _data.

TypeHandle CurveFitter::get_class_type ( void ) [inline, static]

Definition at line 94 of file curveFitter.h.

int CurveFitter::get_num_samples ( ) const

Returns the number of sample points that have been added.

Definition at line 137 of file curveFitter.cxx.

LVecBase3f CurveFitter::get_sample_hpr ( int n ) const

Returns the orientation of the nth sample added.

Definition at line 178 of file curveFitter.cxx.
References ParametricCurveCollection::get_max_t(), nassertv, NULL, and t.

float CurveFitter::get_sample_t ( int n ) const

Returns the parametric value of the nth sample added.

Definition at line 150 of file curveFitter.cxx.
References _data, nassertr, and zero.

LVecBase3f CurveFitter::get_sample_tangent ( int n ) const

Returns the tangent associated with the nth sample added.
This is only meaningful if compute_tangents() has already been called.
Definition at line 196 of file curveFitter.cxx.
References _data, CurveFitter::DataPoint::_hpr, CurveFitter::DataPoint::_t, CurveFitter::DataPoint::_xyz, ParametricCurveCollection::evaluate(), and t.

LVecBase3f CurveFitter::get_sample_xyz ( int n ) const

Returns the point in space of the nth sample added.

Definition at line 164 of file curveFitter.cxx.
References _data, and nassertv.

void CurveFitter::init_type ( void ) [inline, static]

Definition at line 97 of file curveFitter.h.
References _type_handle.

PointerTo< ParametricCurveCollection > CurveFitter::make_hermite ( ) const

Converts the current set of data points into a Hermite curve.

Definition at line 446 of file curveFitter.cxx.
References ClassicNurbsCurve::get_knot(), and ClassicNurbsCurve::set_knot().

PointerTo< ParametricCurveCollection > CurveFitter::make_nurbs ( ) const

Converts the current set of data points into a NURBS curve.
This gives a smoother curve than produced by MakeHermite().
Definition at line 495 of file curveFitter.cxx.

void CurveFitter::output ( ostream & out ) const

Definition at line 551 of file curveFitter.cxx.
Referenced by operator<<().

void CurveFitter::remove_samples ( int begin,

int end

)

Eliminates all samples from index begin, up to but not including index end, from the database.

Definition at line 212 of file curveFitter.cxx.
References _data.

void CurveFitter::reset ( )

Removes all the data points previously added to the CurveFitter, and initializes it for a new curve.

Definition at line 69 of file curveFitter.cxx.
References _data, _got_xyz, and t.

void CurveFitter::sample ( ParametricCurveCollection * curves,

int count

)

Generates a series of data points by sampling the given curve (or xyz/hpr curves) the indicated number of times.
The sampling is made evenly in parametric time, and then the timewarps, if any, are applied.
Definition at line 236 of file curveFitter.cxx.

void CurveFitter::sort_points ( )

Sorts all the data points in order by parametric time, in case they were added in an incorrect order.

Definition at line 312 of file curveFitter.cxx.
References _data.

void CurveFitter::wrap_hpr ( )

Resets each HPR data point so that the maximum delta between any two consecutive points is 180 degrees, which should prevent incorrect HPR wrapping.

Definition at line 276 of file curveFitter.cxx.

void CurveFitter::write ( ostream & out ) const

Definition at line 563 of file curveFitter.cxx.

Member Data Documentation

Data CurveFitter::_data

Definition at line 88 of file curveFitter.h.
Referenced by add_hpr(), add_xyz(), add_xyz_hpr(), compute_tangents(), desample(), get_sample_t(), get_sample_tangent(), get_sample_xyz(), remove_samples(), reset(), sort_points(), and ~CurveFitter().

bool CurveFitter::_got_hpr

Definition at line 91 of file curveFitter.h.
Referenced by add_hpr(), and add_xyz().

bool CurveFitter::_got_xyz

Definition at line 90 of file curveFitter.h.
Referenced by add_hpr(), and reset().

TypeHandle CurveFitter::_type_handle [static, private]

Definition at line 32 of file curveFitter.cxx.
Referenced by init_type().

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

panda/src/parametrics/curveFitter.h
panda/src/parametrics/curveFitter.cxx

Generated on Fri May 2 00:49:06 2003 for Panda by

1.3


Public Types
typedef pvector< DataPoint >	Data
Public Member Functions
	CurveFitter ()
	~CurveFitter ()
void	reset ()
	Removes all the data points previously added to the CurveFitter, and initializes it for a new curve.
void	add_xyz (float t, const LVecBase3f &xyz)
	Adds a single sample xyz.
void	add_hpr (float t, const LVecBase3f &hpr)
	Adds a single sample hpr.
void	add_xyz_hpr (float t, const LVecBase3f &xyz, const LVecBase3f &hpr)
	Adds a single sample xyz & hpr simultaneously.
int	get_num_samples () const
	Returns the number of sample points that have been added.
float	get_sample_t (int n) const
	Returns the parametric value of the nth sample added.
LVecBase3f	get_sample_xyz (int n) const
	Returns the point in space of the nth sample added.
LVecBase3f	get_sample_hpr (int n) const
	Returns the orientation of the nth sample added.
LVecBase3f	get_sample_tangent (int n) const
	Returns the tangent associated with the nth sample added.
void	remove_samples (int begin, int end)
	Eliminates all samples from index begin, up to but not including index end, from the database.
void	sample (ParametricCurveCollection *curves, int count)
	Generates a series of data points by sampling the given curve (or xyz/hpr curves) the indicated number of times.
void	wrap_hpr ()
	Resets each HPR data point so that the maximum delta between any two consecutive points is 180 degrees, which should prevent incorrect HPR wrapping.
void	sort_points ()
	Sorts all the data points in order by parametric time, in case they were added in an incorrect order.
void	desample (float factor)
	Removes sample points in order to reduce the complexity of a sampled curve.
void	compute_tangents (float scale)
	Once a set of points has been built, and prior to calling MakeHermite() or MakeNurbs(), ComputeTangents() must be called to set up the tangents correctly (unless the tangents were defined as the points were added).
PointerTo< ParametricCurveCollection >	make_hermite () const
	Converts the current set of data points into a Hermite curve.
PointerTo< ParametricCurveCollection >	make_nurbs () const
	Converts the current set of data points into a NURBS curve.
void	output (ostream &out) const
void	write (ostream &out) const
Static Public Member Functions
TypeHandle	get_class_type ()
void	init_type ()
Public Attributes
Data	_data
bool	_got_xyz
bool	_got_hpr
Static Private Attributes
TypeHandle	_type_handle