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

This class defines an evaluator-based offset-curve. More...

#include <CrossTanOffDist.h>

Inheritance diagram for Go::CrossTanOffDist:

List of all members.

Public Member Functions
	CrossTanOffDist (boost::shared_ptr< SplineCurve > &poscurve, boost::shared_ptr< SplineCurve > &tangcv1, boost::shared_ptr< SplineCurve > &tangcv2, boost::shared_ptr< SplineCurve > &blend1, boost::shared_ptr< SplineCurve > &blend2, boost::shared_ptr< SplineCurve > &opposite1, boost::shared_ptr< SplineCurve > &opposite2, double factor)
	Constructor.
virtual	~CrossTanOffDist ()
	Destructor.
virtual Point	eval (double t) const
	Evaluate a point on the curve for a given parameter.
virtual void	eval (double t, int n, Point der[]) const
	Evaluate a point and a certain number of derivatives on the curve for a given parameter.
virtual double	start () const
	Get the start parameter of the curve.
virtual double	end () const
	Get the end parameter of the curve.
virtual int	dim () const
	Get the dimension of the space in which the curve lies.
virtual bool	approximationOK (double par, Point approxpos, double tol1, double tol2) const
	Check if the curve, evaluated at a given parameter, approximates a given position within a given tolerance.

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Detailed Description

This class defines an evaluator-based offset-curve.

We're blending between a set of curves seen as an evaluator based curve.

Definition at line 51 of file CrossTanOffDist.h.

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Constructor & Destructor Documentation

Go::CrossTanOffDist::CrossTanOffDist	(	boost::shared_ptr< SplineCurve > &	poscurve,
		boost::shared_ptr< SplineCurve > &	tangcv1,
		boost::shared_ptr< SplineCurve > &	tangcv2,
		boost::shared_ptr< SplineCurve > &	blend1,
		boost::shared_ptr< SplineCurve > &	blend2,
		boost::shared_ptr< SplineCurve > &	opposite1,
		boost::shared_ptr< SplineCurve > &	opposite2,
		double	factor
	)

Constructor.

Parameters:

	poscurve	the curve to offset from.
	tangcv1	tangent curve along poscurve.
	tangcv2	cross tangent curve along poscurve.
	blend1	1-dimensional blending function for tangcv1.
	blend2	1-dimensional blending function for tangcv2.
	opposite1	space curve corresponding to poscurve, parametrized in the opposite direction.
	opposite2	space curve corresponding to poscurve, parametrized in the opposite direction. May be equal to opposite1.
	factor	if != 1.0 the poscurve, opposite1 & opposite2 will be used to define the opposite curve, so as to minimize differences in parametrization along the cv.

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Member Function Documentation

virtual Point Go::CrossTanOffDist::eval

(

double

t

)

const [virtual]

Evaluate a point on the curve for a given parameter.

Parameters:

t

the parameter for which to evaluate the curve.

Returns:

the evaluated point

Implements Go::EvalCurve.

virtual void Go::CrossTanOffDist::eval	(	double	t,
		int	n,
		Point	der[]
	)			const [virtual]

Evaluate a point and a certain number of derivatives on the curve for a given parameter.

Parameters:

	t	the parameter for which to evaluate the curve.
	n	the number of derivatives (0 or more)

Return values:

der

pointer to an array of Points where the result will be written. The position will be stored first, then the first derivative (tangent), then the second, etc.. NB: For most (all) derived classes of 'EvalCurve', the implementation actually only supports the computation of one derivative, i.e. if n > 1, only one derivative will be computed anyway.

Implements Go::EvalCurve.

virtual double Go::CrossTanOffDist::start

(

)

const [virtual]

Get the start parameter of the curve.

Returns:

the start parameter of the curve.

Implements Go::EvalCurve.

virtual double Go::CrossTanOffDist::end

(

)

const [virtual]

Get the end parameter of the curve.

Returns:

the end parameter of the curve.

Implements Go::EvalCurve.

virtual int Go::CrossTanOffDist::dim

(

)

const [virtual]

Get the dimension of the space in which the curve lies.

Returns:

the space dimension of the curve.

Implements Go::EvalCurve.

virtual bool Go::CrossTanOffDist::approximationOK	(	double	par,
		Point	approxpos,
		double	tol1,
		double	tol2
	)			const [virtual]

Check if the curve, evaluated at a given parameter, approximates a given position within a given tolerance.

Parameters:

	par	the parameter at which to check the curve
	approxpos	the position we want to check whether or not the curve approximates for parameter 'par'.
	tol1	approximation tolerance,
	tol2	another approximation tolerance (its use is defined by some of the derived classes.

Returns:

'true' if the curve approximates the point at the parameter, 'false' otherwise.

Implements Go::EvalCurve.

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

• CrossTanOffDist.h

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