Classes | Public Types | Public Member Functions | Static Public Member Functions | Public Attributes

CurveFitter Class Reference

List of all members.

Classes

class  DataPoint

Public Types

typedef pvector< DataPoint > Data

Public Member Functions

void add_hpr (float t, const LVecBase3f &hpr)
 Adds a single sample hpr.
void add_xyz (float t, const LVecBase3f &xyz)
 Adds a single sample xyz.
void add_xyz_hpr (float t, const LVecBase3f &xyz, const LVecBase3f &hpr)
 Adds a single sample xyz & hpr simultaneously.
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).
void desample (float factor)
 Removes sample points in order to reduce the complexity of a sampled curve.
int get_num_samples () const
 Returns the number of sample points that have been added.
LVecBase3f get_sample_hpr (int n) const
 Returns the orientation of the nth sample added.
float get_sample_t (int n) const
 Returns the parametric value of the nth sample added.
LVecBase3f get_sample_tangent (int n) const
 Returns the tangent associated with the nth sample added.
LVecBase3f get_sample_xyz (int n) const
 Returns the point in space of the nth sample added.
void output (ostream &out) const
 PT (ParametricCurveCollection) make_nurbs() const
 PT (ParametricCurveCollection) make_hermite() const
void remove_samples (int begin, int end)
 Eliminates all samples from index begin, up to but not including index end, from the database.
void reset ()
 Removes all the data points previously added to the CurveFitter, and initializes it for a new curve.
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 sort_points ()
 Sorts all the data points in order by parametric time, in case they were added in an incorrect order.
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 write (ostream &out) const

Static Public Member Functions

static TypeHandle get_class_type ()
static void init_type ()

Public Attributes

Data _data
bool _got_hpr
bool _got_xyz

Detailed Description

Definition at line 35 of file curveFitter.h.

Member Function Documentation

void CurveFitter::add_hpr ( float  t,
const LVecBase3f &  hpr 
)

Adds a single sample hpr.

Definition at line 78 of file curveFitter.cxx.

Referenced by ParametricCurveCollection::face_forward().

void CurveFitter::add_xyz ( float  t,
const LVecBase3f &  xyz 
)

Adds a single sample xyz.

Definition at line 64 of file curveFitter.cxx.

Referenced by ParametricCurveCollection::make_even().

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

Adds a single sample xyz & hpr simultaneously.

Definition at line 92 of file curveFitter.cxx.

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 294 of file curveFitter.cxx.

Referenced by ParametricCurveCollection::face_forward(), and ParametricCurveCollection::make_even().

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 264 of file curveFitter.cxx.

int CurveFitter::get_num_samples ( ) const

Returns the number of sample points that have been added.

Definition at line 109 of file curveFitter.cxx.

LVecBase3f CurveFitter::get_sample_hpr ( int  n) const

Returns the orientation of the nth sample added.

Definition at line 141 of file curveFitter.cxx.

References LVecBase3f::zero().

float CurveFitter::get_sample_t ( int  n) const

Returns the parametric value of the nth sample added.

Definition at line 119 of file curveFitter.cxx.

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 154 of file curveFitter.cxx.

References LVecBase3f::zero().

LVecBase3f CurveFitter::get_sample_xyz ( int  n) const

Returns the point in space of the nth sample added.

Definition at line 130 of file curveFitter.cxx.

References LVecBase3f::zero().

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 166 of file curveFitter.cxx.

void CurveFitter::reset ( )

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

Definition at line 54 of file curveFitter.cxx.

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 184 of file curveFitter.cxx.

References ParametricCurveCollection::evaluate(), ParametricCurveCollection::get_hpr_curve(), ParametricCurveCollection::get_max_t(), and ParametricCurveCollection::get_xyz_curve().

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 251 of file curveFitter.cxx.

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 219 of file curveFitter.cxx.

Referenced by ParametricCurveCollection::face_forward(), HermiteCurve::invalidate_cv(), and HermiteCurve::recompute_basis().

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