precice::math::Bspline Class Reference

#include <Bspline.hpp>

Public Member Functions
	Bspline (Eigen::VectorXd ts, const Eigen::MatrixXd &xs, int splineDegree)
	Initialises the B-Spline interpolation with the given data (x0,t0), (x1,t1), ..., (xn,tn) and computes the knots and control points. The code for computing the knots and the control points is copied from Eigens bspline interpolation with minor modifications, https://gitlab.com/libeigen/eigen/-/blob/master/unsupported/Eigen/src/Splines/SplineFitting.h.
Eigen::VectorXd	interpolateAt (double t) const
	Samples the B-Spline interpolation.

Private Attributes
Eigen::VectorXd	_knots
Eigen::MatrixXd	_ctrls
double	_tsMin
double	_tsMax
int	_ndofs

Detailed Description

Definition at line 6 of file Bspline.hpp.

Constructor & Destructor Documentation

Bspline()

precice::math::Bspline::Bspline	(	Eigen::VectorXd	ts,
		const Eigen::MatrixXd &	xs,
		int	splineDegree )

Initialises the B-Spline interpolation with the given data (x0,t0), (x1,t1), ..., (xn,tn) and computes the knots and control points. The code for computing the knots and the control points is copied from Eigens bspline interpolation with minor modifications, https://gitlab.com/libeigen/eigen/-/blob/master/unsupported/Eigen/src/Splines/SplineFitting.h.

Parameters

ts	the timestamps which must be sorted from lowest to highest and contain at least 2 samples.
xs	the data to be interpolated. It has to contain at least two samples.
splineDegree	the used spline degree, which has to be larger than 0

Definition at line 14 of file Bspline.cpp.

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Member Function Documentation

interpolateAt()

Eigen::VectorXd precice::math::Bspline::interpolateAt

(

double

t

)

const

Samples the B-Spline interpolation.

Parameters

t	must be within [_tsMin; _tsMax].

Returns

the inteprolant x(t) if t does not equal any of the timestamps in ts. If t equals any of the timestamps in ts the corresponding value to t is returned.

Definition at line 58 of file Bspline.cpp.

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Member Data Documentation

_ctrls

Eigen::MatrixXd precice::math::Bspline::_ctrls

private

Definition at line 31 of file Bspline.hpp.

_knots

Eigen::VectorXd precice::math::Bspline::_knots

private

Definition at line 30 of file Bspline.hpp.

_ndofs

int precice::math::Bspline::_ndofs

private

Definition at line 34 of file Bspline.hpp.

_tsMax

double precice::math::Bspline::_tsMax

private

Definition at line 33 of file Bspline.hpp.

_tsMin

double precice::math::Bspline::_tsMin

private

Definition at line 32 of file Bspline.hpp.

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

• src/math/Bspline.hpp
• src/math/Bspline.cpp