Go::ProjectCurveAndCrossTan Class Reference
['geometry' - a spline library]

Evaluator class representing the projection and and tangent curve given a set of input curves. More...

#include <ProjectCurveAndCrossTan.h>

Inheritance diagram for Go::ProjectCurveAndCrossTan:

List of all members.

Public Member Functions
	ProjectCurveAndCrossTan (const SplineCurve &space_crv, const SplineCurve &crosstan_crv, const SplineSurface &surf, const Point *start_par_pt, const Point *end_par_pt, double epsgeo, const RectDomain *domain_of_interest=NULL)
	Constructor.
virtual	~ProjectCurveAndCrossTan ()
	Destructor.
virtual std::vector< Go::Point >	eval (double t)
	Evaluate the curve set.
virtual void	eval (double t, int n, std::vector< std::vector< Go::Point > > &ders)
	Evaluate derivatives in the curve set.
virtual double	start ()
	Start parameter of domain.
virtual double	end ()
	End parameter of domain.
virtual int	dim ()
	Dimension of space (parameter domain, i.e.
virtual bool	approximationOK (double par, const std::vector< Go::Point > &approxpos, double tol1, double tol2)
	Whether the approximation is within tolerances in input parameter.
virtual int	nmbCvs ()
	The number of curves in the curve set.

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Detailed Description

Evaluator class representing the projection and and tangent curve given a set of input curves.

In total 3 points are computed: the parameter point of the projection on an input surface, the corresponding space pt and the projected cross tangent point.

Definition at line 56 of file ProjectCurveAndCrossTan.h.

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Constructor & Destructor Documentation

Go::ProjectCurveAndCrossTan::ProjectCurveAndCrossTan	(	const SplineCurve &	space_crv,
		const SplineCurve &	crosstan_crv,
		const SplineSurface &	surf,
		const Point *	start_par_pt,
		const Point *	end_par_pt,
		double	epsgeo,
		const RectDomain *	domain_of_interest = NULL
	)

Constructor.

Parameters:

	space_crv	the input space curve to project.
	crosstan_crv	the cross tangent curve associated with space_crv.
	surf	the parametric surface onto which to project the two curves.
	start_par_pt	We may require that the projected curve shall start in a specific point in the parameter domain (input pointer may be NULL).
	end_par_pt	We may require that the projected curve shall end in a specific point in the parameter domain (input pointer may be NULL).
	epsgeo	geometric tolerance for the projection.
	domain_of_interest	if not null, specifies the part of the SplineSurface s parametric domain that will be considered.

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Member Function Documentation

virtual std::vector<Go::Point> Go::ProjectCurveAndCrossTan::eval

(

double

t

)

[virtual]

Evaluate the curve set.

Parameters:

t

parameter in which to evaluate.

Returns:

the evaluated points in the input parameter, size of vector is 3.

Implements Go::EvalCurveSet.

virtual void Go::ProjectCurveAndCrossTan::eval	(	double	t,
		int	n,
		std::vector< std::vector< Go::Point > > &	ders
	)			[virtual]

Evaluate derivatives in the curve set.

Parameters:

	t	parameter in which to evaluate.
	n	the number of derivatives to evaluate.
	ders	the evaluated points in the input parameter. Size of vector is 3, each holding 'n + 1' points.

Implements Go::EvalCurveSet.

virtual double Go::ProjectCurveAndCrossTan::start

(

)

[virtual]

Start parameter of domain.

Returns:

start parameter of domain.

Implements Go::EvalCurveSet.

virtual double Go::ProjectCurveAndCrossTan::end

(

)

[virtual]

End parameter of domain.

Returns:

end parameter of domain.

Implements Go::EvalCurveSet.

virtual int Go::ProjectCurveAndCrossTan::dim

(

)

[virtual]

Dimension of space (parameter domain, i.e.

2).

Returns:

geometric dimension of the space.

Implements Go::EvalCurveSet.

virtual bool Go::ProjectCurveAndCrossTan::approximationOK	(	double	par,
		const std::vector< Go::Point > &	approxpos,
		double	tol1,
		double	tol2
	)			[virtual]

Whether the approximation is within tolerances in input parameter.

Parameters:

	par	parameter in which to evaluate.
	approxpos	whether the input points are within tolerance from the evaluated points (as given by eval()).
	tol1	tolerance used to decide approximation accuracy.
	tol2	tolerance used to decide approximation accuracy.

Returns:

whether the approximation is within tolerances in input parameter.

Implements Go::EvalCurveSet.

virtual int Go::ProjectCurveAndCrossTan::nmbCvs

(

)

[virtual]

The number of curves in the curve set.

Returns:

the number of curves in the curve set, i.e. 3.

Implements Go::EvalCurveSet.

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

• ProjectCurveAndCrossTan.h

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