BSplCLib_CacheParams Struct Reference

Simple structure containing parameters describing parameterization of a B-spline curve or a surface in one direction (U or V), and data of the current span for its caching. More...

#include <BSplCLib_CacheParams.hxx>

Public Member Functions
	BSplCLib_CacheParams (int theDegree, bool thePeriodic, const NCollection_Array1< double > &theFlatKnots)
	Constructor, prepares data structures for caching.
double	PeriodicNormalization (double theParameter) const noexcept
	Normalizes the parameter for periodic B-splines.
bool	IsCacheValid (double theParameter) const noexcept
	Verifies validity of the cache using flat parameter of the point.
void	LocateParameter (double &theParameter, const NCollection_Array1< double > &theFlatKnots)
	Computes span for the specified parameter.
	BSplCLib_CacheParams (const BSplCLib_CacheParams &)=delete
BSplCLib_CacheParams &	operator= (const BSplCLib_CacheParams &)=delete

Data Fields
const int	Degree
	degree of Bezier/B-spline
const bool	IsPeriodic
	true of the B-spline is periodic
const double	FirstParameter
	first valid parameter
const double	LastParameter
	last valid parameter
const int	SpanIndexMin
	minimal index of span
const int	SpanIndexMax
	maximal index of span
double	SpanStart
	parameter for the frst point of the span
double	SpanLength
	length of the span
int	SpanIndex
	index of the span

Detailed Description

Simple structure containing parameters describing parameterization of a B-spline curve or a surface in one direction (U or V), and data of the current span for its caching.

Constructor & Destructor Documentation

BSplCLib_CacheParams() [1/2]

BSplCLib_CacheParams::BSplCLib_CacheParams ( int theDegree, bool thePeriodic, const NCollection_Array1< double > & theFlatKnots )

inline

Constructor, prepares data structures for caching.

Parameters

theDegree	degree of the B-spline (or Bezier)
thePeriodic	identify whether the B-spline is periodic
theFlatKnots	knots of Bezier / B-spline parameterization

BSplCLib_CacheParams() [2/2]

BSplCLib_CacheParams::BSplCLib_CacheParams ( const BSplCLib_CacheParams & )

delete

Member Function Documentation

IsCacheValid()

bool BSplCLib_CacheParams::IsCacheValid ( double theParameter ) const

inlinenoexcept

Verifies validity of the cache using flat parameter of the point.

Parameters

theParameter

parameter of the point placed in the span

LocateParameter()

void BSplCLib_CacheParams::LocateParameter ( double & theParameter, const NCollection_Array1< double > & theFlatKnots )

inline

Computes span for the specified parameter.

Parameters

theParameter	parameter of the point placed in the span
theFlatKnots	knots of Bezier / B-spline parameterization

operator=()

BSplCLib_CacheParams & BSplCLib_CacheParams::operator= ( const BSplCLib_CacheParams & )

delete

PeriodicNormalization()

double BSplCLib_CacheParams::PeriodicNormalization ( double theParameter ) const

inlinenoexcept

Normalizes the parameter for periodic B-splines.

Parameters

theParameter

the value to be normalized into the knots array

Field Documentation

Degree

const int BSplCLib_CacheParams::Degree

degree of Bezier/B-spline

FirstParameter

const double BSplCLib_CacheParams::FirstParameter

first valid parameter

IsPeriodic

const bool BSplCLib_CacheParams::IsPeriodic

true of the B-spline is periodic

LastParameter

const double BSplCLib_CacheParams::LastParameter

last valid parameter

SpanIndex

int BSplCLib_CacheParams::SpanIndex

index of the span

SpanIndexMax

const int BSplCLib_CacheParams::SpanIndexMax

maximal index of span

SpanIndexMin

const int BSplCLib_CacheParams::SpanIndexMin

minimal index of span

SpanLength

double BSplCLib_CacheParams::SpanLength

length of the span

SpanStart

double BSplCLib_CacheParams::SpanStart

parameter for the frst point of the span

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The documentation for this struct was generated from the following file:

• BSplCLib_CacheParams.hxx