mondschein::math::NURBScurve Class Reference

This class represents a NURBS curve. More...

#include <nurbscurve.h>

Public Member Functions
virtual Eigen::Vector3d	operator() (float64 _t) const
	Curve point access operator. More...
virtual void	set_degree (uint32 _d)
	Set the curve degree. More...
virtual uint32	get_degree () const
	Get the curve degree. More...
virtual void	set_points (const std::vector< Eigen::Vector4d > &_p)
	Set the interpolation points. More...
virtual std::vector < Eigen::Vector4d >	get_points () const
	Get the interpolation points. More...
virtual void	calc_knots (bool _cl)
	Calculate the knot vector. More...
virtual Eigen::Vector3d	get_point (float64 _t) const
	Get a curve point. More...

Detailed Description

This class represents a NURBS curve.

The NURBScurve class contains the parametric representation of a NURBS curve. Since NURBS curves are the most generalized of B-Spline curves it also covers any B-Spline curve available.
Any NURBS curve is defined by a set of n control points and its degree.

Definition at line 41 of file nurbscurve.h.

Member Function Documentation

void NURBScurve::calc_knots ( bool  _cl )

virtual

Calculate the knot vector.

Parameters

_cl	if TRUE the knot vector is calculated in chord length, uniform length otherwise

Exceptions

mondschein::exception

first known exception called during knot vector calculation

NOTE: The knot vector must always be recalculated after changing the curve degree or interpolation points. Otherwise the interpolation may be incorrect.

Definition at line 160 of file nurbscurve.cpp.

uint32 NURBScurve::get_degree ( ) const

virtual

Get the curve degree.

Returns

the curve degree value

Definition at line 144 of file nurbscurve.cpp.

Eigen::Vector3d NURBScurve::get_point ( float64  _t ) const

virtual

Get a curve point.

Parameters

_t	the location between [0,1] of the curve point

Returns

the vector of the interpolated curve point

Exceptions

mondschein::exception

if a known exception has been thrown during execution or if the knot vector is empty

NOTE: Before a curve point can be interpolated it must be made sure that the knot vector has been calculated.

See Also

operator()(float64 _t) const

Definition at line 177 of file nurbscurve.cpp.

std::vector< Eigen::Vector4d > NURBScurve::get_points ( ) const

virtual

Get the interpolation points.

Returns

the interpolation points of *this

Definition at line 155 of file nurbscurve.cpp.

Eigen::Vector3d NURBScurve::operator() ( float64  _t ) const

virtual

Curve point access operator.

Parameters

_t	the location between [0,1] of the curve point

Returns

the vector of the interpolated curve point

Exceptions

mondschein::exception

if a known exception has ben thrown during execution

NOTE: Before a curve point can be interpolated it must be made sure that the knot vector has been calculated.

See Also

get_point(float64 _t) const

Definition at line 122 of file nurbscurve.cpp.

void NURBScurve::set_degree ( uint32  _d )

virtual

Set the curve degree.

Parameters

_d	the curve degree

Exceptions

mondschein::exception

if _d is not smaller than the number of interpolation points

NOTE: If the knot vector is not recalculated after changing the curve degree the interpolation may be incorrect.

Definition at line 137 of file nurbscurve.cpp.

void NURBScurve::set_points ( const std::vector< Eigen::Vector4d > &  _p )

virtual

Set the interpolation points.

Parameters

_p	the interpolation points

Exceptions

mondschein::exception

if _p.size() <= curve degree

NOTE: If the knot vector is not recalculated after changing the interpolation points the interpolation may be incorrect.

Definition at line 149 of file nurbscurve.cpp.

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

• src/core/nurbscurve.h
• src/core/nurbscurve.cpp