NURBSLine Class Reference

Class NURBSLine. More...

#include <NURBSLine.h>

Collaboration diagram for NURBSLine:

List of all members.

Public Member Functions
	NURBSLine ()
	Default constructor.
	~NURBSLine ()
	Destructor.
void	Save (FILE *File)
	Writes class information to a binary file. The current object state can be completely recovered when applying the Restore() operation.
void	Restore (FILE *File)
	Restores class data (written using Save()) from a binary file.
void	Read (FILE *File)
	Reads class data from an ASCII file in FEAWEB format.
void	Print (FILE *File=stdout)
	Prints class information in an ASCII file.
void	Free ()
	Releases the memory allocated for the class attributes.
void	SetNumber (long number)
	Sets the external number of this curve.
long	GetNumber ()
	Returns the external number of this curve.
void	SetOrder (long orderu)
	Sets the order of the NURBS basis functions.
void	GetOrder (long &orderu)
	Returns the order of the NURBS basis functions.
void	SetNumberOfCPs (long NCPu)
	Sets the number of control points and adjust the size of the correspondent data structures.
void	GetNumberOfCPs (long &NCPu)
	Returns the number of control points.
void	SetKnotVector (BuiltInArray< double > &KnotU)
	Sets the knot vector using external values.
void	SetOpenUniformKnotVector ()
	Sets the knot vector as open uniform.
double *	GetCPCoords (long CpU)
	Returns a pointer to the coordinates of the control point Cpu.
double	GetWeight (long CpU)
	Returns the weight of the control point Cp U.
void	SetCPData (BuiltInArray< double > &X, BuiltInArray< double > &Y, BuiltInArray< double > &W)
	Sets the data of all control points.
void	GetCPData (BuiltInArray< double > &X, BuiltInArray< double > &Y, BuiltInArray< double > &W)
	Returns the data of all control points.
void	SetCPData (long CpU, Variable_Defs_E VarType, double Value)
	Sets the data of the control point Cpu.
double	EvalRBSplineBasisFunction (long CpU, double u)
	Returns the value of the rational basis function CpU at the parametric coordinate u.
void	SetParametricCoordinates (double *ParametricCoordinates, long *const BoundaryNodes, long NumNodes, Nodes &NN)
	Finds the parametric coordinates of the nodes on this curve.
void	SetParametricCoordinates (double &u, double *pCoordsi)
	Finds the parametric coordinate of a point on the curve.
Protected Member Functions
void	EvalRBSplineBasisFunctions (double u)
	Evaluate rational basis functions and their derivatives at the parametric coordinate u and stores those values in class' attributes.
Protected Attributes
long	OrderU
	Order of this curve. @.
BuiltInArray< double >	KnotVectU
	Knot vector. @ ## begin NURBSLine::KnotVectU%39D9ED570253.attr preserve=no protected: BuiltInArray<double> {UA} ()
BuiltInArray< double >	Weights
	Weights of control points. @ ## begin NURBSLine::Weights%39D9ED720139.attr preserve=no protected: BuiltInArray<double> {UA} ()
BuiltInArray< double >	CoordsX
	X-coordinates of control points. @ ## begin NURBSLine::CoordsX%39D9ED8D03D7.attr preserve=no protected: BuiltInArray<double> {UA} ()
BuiltInArray< double >	CoordsY
	Y-coordinates of control points. @ ## begin NURBSLine::CoordsY%39D9ED970092.attr preserve=no protected: BuiltInArray<double> {UA} ()

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Detailed Description

Class NURBSLine.

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Member Function Documentation

void NURBSLine::Read

(

FILE *

File

)

Reads class data from an ASCII file in FEAWEB format.

See the document "FEAWEB ASCII File Format" for details.

void NURBSLine::SetKnotVector

(

BuiltInArray< double > &

KnotU

)

Sets the knot vector using external values.

The purpose of this operation is to allow the specification of non-uniform knot vectors. Observe that the values of the knot vector must be normalized by its maximum value.

void NURBSLine::SetParametricCoordinates	(	double *	ParametricCoordinates,
		long *const	BoundaryNodes,
		long	NumNodes,
		Nodes &	NN
	)

Finds the parametric coordinates of the nodes on this curve.

This operation assumes that the list of nodes is ordered. If its true it is possible to approximate the parametric coordinate linearly. Then this estimative is refined by Newton-Raphson iterations. Note, however, that the linear approximation is not mandatory and the parametric coordinates can be found only applying Newton-Raphson.

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Member Data Documentation

BuiltInArray<double> NURBSLine::CoordsX [protected]

X-coordinates of control points. @ ## begin NURBSLine::CoordsX%39D9ED8D03D7.attr preserve=no protected: BuiltInArray<double> {UA} ()

## Attribute: CoordsX%39D9ED8D03D7

BuiltInArray<double> NURBSLine::CoordsY [protected]

Y-coordinates of control points. @ ## begin NURBSLine::CoordsY%39D9ED970092.attr preserve=no protected: BuiltInArray<double> {UA} ()

## Attribute: CoordsY%39D9ED970092

BuiltInArray<double> NURBSLine::KnotVectU [protected]

Knot vector. @ ## begin NURBSLine::KnotVectU%39D9ED570253.attr preserve=no protected: BuiltInArray<double> {UA} ()

## Attribute: KnotVectU%39D9ED570253

long NURBSLine::OrderU [protected]

Order of this curve. @.

## Attribute: OrderU%3728AC55019B

the In the notation of [DF_Rogers1990 pag. 336], order=degree+1. @ ## begin NURBSLine::OrderU%3728AC55019B.attr preserve=no protected: long {VA} (0)

BuiltInArray<double> NURBSLine::Weights [protected]

Weights of control points. @ ## begin NURBSLine::Weights%39D9ED720139.attr preserve=no protected: BuiltInArray<double> {UA} ()

## Attribute: Weights%39D9ED720139

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

• include/nurbs/NURBSLine.h
• src/nurbs/NURBSLine.cpp