Go::ParamPointInt Class Reference
[Intersections]

Class representing the "intersection object" of a parametric curve. More...

#include <ParamPointInt.h>

Inheritance diagram for Go::ParamPointInt:

List of all members.

Public Member Functions
	ParamPointInt (boost::shared_ptr< Point > point, ParamGeomInt *parent=0)
	Constructor.
virtual	~ParamPointInt ()
	Destructor.
virtual void	point (Point &pt, const double *tpar) const
	Evaluate the object in the input parameter.
virtual void	point (std::vector< Point > &pt, const double *tpar, int derivs, const bool *from_right=0, double resolution=1.0e-12) const
	Evaluate the object in the input parameter, with the specified number of derivatives.
virtual ParamPointInt *	getParamPointInt ()
	Return a pointer to this object.
virtual int	numParams () const
	The number of parameters in the object.
virtual void	getLengthAndWiggle (double *length, double *wiggle)
	Return an estimate on the size and wiggle of the object.
virtual bool	hasInnerKnots (int pardir) const
	Return true if the object has any inner knots in the specified parameter direction.
virtual bool	hasCriticalVals (int pardir) const
	Return true if the object has any critical parameter values in the specified parameter direction.
virtual bool	hasCriticalValsOrKnots (int pardir) const
	Return true if the object has any critical parameter values or inner knots in the specified parameter direction.
virtual bool	canDivide (int pardir)
	Return true if we are allowed to divide in the specified parameter direction.
virtual std::vector< double >	getCriticalVals (int pardir) const
	Return the critical parameter values in the specified direction.
virtual std::vector< double >	getInnerKnotVals (int pardir, bool sort=false) const
	Return the inner knot values in the specified direction.
virtual std::vector< double >	getCriticalValsAndKnots (int pardir) const
	Return the critical parameter values and inner knots for object.
virtual int	getMeshSize (int dir)
	Return the size of the geometric sample mesh in the specified direction.
virtual double	paramFromMesh (int dir, int idx)
	Return the corresponding mesh parameter.
virtual std::vector< double >::iterator	getMesh ()
	Return the geometric sample mesh for the parametric function.
virtual double	startParam (int pardir) const
	Return the start parameter value in the specified direction.
virtual double	endParam (int pardir) const
	Return the end parameter in the specified direction.
virtual bool	boundaryPoint (const double *par, double eps) const
	Return true if the specified point lies within eps from the boundary.
virtual void	subdivide (int pardir, double par, std::vector< boost::shared_ptr< ParamGeomInt > > &subdiv_objs, std::vector< boost::shared_ptr< ParamGeomInt > > &bd_objs)
	Subdivide the object in the specified parameter direction and parameter value.
virtual CompositeBox	compositeBox () const
	Create the CompositeBox for the parametric object.
virtual DirectionCone	directionCone () const
	A cone which contains all normals of the object.
virtual void	getBoundaryObjects (std::vector< boost::shared_ptr< BoundaryGeomInt > > &bd_objs)
	Return the boundary objects of this object.
virtual int	dimension () const
	The dimension of the geometric space.
virtual bool	isDegenerate (double epsge, int dir, double *par)
	Verify whether or not the object is degenerate in the specified direction and parameter.
virtual bool	isSpline ()
	Verify whether the object is a spline.
virtual double	getOptimizedConeAngle (Point &axis1, Point &axis2)
	We try to treat problems which will never result in a simple case by shrinking the domain slightly, resulting in smaller cones.
RotatedBox	getRotatedBox (std::vector< Point > &axis) const
	Create a box containing the geometric sample mesh in the input coordinate system.
Protected Attributes
boost::shared_ptr< Point >	point_
int	dim_
ParamCurveInt *	parentcurve_
std::vector< double >	coords_

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Detailed Description

Class representing the "intersection object" of a parametric curve.

Definition at line 53 of file ParamPointInt.h.

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Constructor & Destructor Documentation

Go::ParamPointInt::ParamPointInt	(	boost::shared_ptr< Point >	point,
		ParamGeomInt *	parent = 0
	)			[explicit]

Constructor.

Parameters:

	point	the point defining the intersection object.
	parent	the parent object to this object. Can be either a curve or a surface.

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Member Function Documentation

virtual void Go::ParamPointInt::point	(	Point &	pt,
		const double *	tpar
	)			const [inline, virtual]

Evaluate the object in the input parameter.

Parameters:

	pt	the Point to be returned.
	tpar	the parameter in which to evaluate. The parameter is not used as the parameter domain of a point is of dimension 0.

Implements Go::ParamObjectInt.

Definition at line 71 of file ParamPointInt.h.

References point_.

virtual void Go::ParamPointInt::point	(	std::vector< Point > &	pt,
		const double *	tpar,
		int	derivs,
		const bool *	from_right = 0,
		double	resolution = 1.0e-12
	)			const [inline, virtual]

Evaluate the object in the input parameter, with the specified number of derivatives.

Parameters:

	pt	the Point to be returned.
	tpar	the parameter in which to evaluate. The parameter is not used as the parameter domain of a point is of dimension 0.
	derivs	the number of derivatives to calculate. Should be 0.
	from_right	if true the evaluation is to be performed from the right side of the parameter value. Not used.
	resolution	tolerance used when determining whether parameters are located at special values of the parameter domain (in particualar: knot values in case of spline objects. Not used.

Implements Go::ParamObjectInt.

Definition at line 88 of file ParamPointInt.h.

References point_.

virtual ParamPointInt* Go::ParamPointInt::getParamPointInt

(

)

[inline, virtual]

Return a pointer to this object.

Returns:

Pointer to this object.

Reimplemented from Go::ParamObjectInt.

Definition at line 102 of file ParamPointInt.h.

virtual void Go::ParamPointInt::getLengthAndWiggle	(	double *	length,
		double *	wiggle
	)			[inline, virtual]

Return an estimate on the size and wiggle of the object.

Does not apply to a point.

Parameters:

	length	the approximative length of the object in the corresponding parameter directions. The size of the array should be equal to numParams().
	wiggle	a scalar representing the wiggle of the object in the corresponding parameter directions. The size of the array should be equal to numParams().

Implements Go::ParamObjectInt.

Definition at line 118 of file ParamPointInt.h.

virtual bool Go::ParamPointInt::hasInnerKnots

(

int

pardir

)

const [inline, virtual]

Return true if the object has any inner knots in the specified parameter direction.

Parameters:

pardir

the parameter direction in question. Indexing starts at 0.

Implements Go::ParamObjectInt.

Definition at line 124 of file ParamPointInt.h.

virtual bool Go::ParamPointInt::hasCriticalVals

(

int

pardir

)

const [inline, virtual]

Return true if the object has any critical parameter values in the specified parameter direction.

Parameters:

pardir

the parameter direction in question. Indexing starts at 0.

Implements Go::ParamObjectInt.

Definition at line 131 of file ParamPointInt.h.

virtual bool Go::ParamPointInt::hasCriticalValsOrKnots

(

int

pardir

)

const [inline, virtual]

Return true if the object has any critical parameter values or inner knots in the specified parameter direction.

Parameters:

pardir

the parameter direction in question. Indexing starts at 0.

Implements Go::ParamObjectInt.

Definition at line 138 of file ParamPointInt.h.

virtual bool Go::ParamPointInt::canDivide

(

int

pardir

)

[inline, virtual]

Return true if we are allowed to divide in the specified parameter direction.

Parameters:

pardir

the parameter direction in question.

Implements Go::ParamObjectInt.

Definition at line 144 of file ParamPointInt.h.

virtual std::vector<double> Go::ParamPointInt::getCriticalVals

(

int

pardir

)

const [inline, virtual]

Return the critical parameter values in the specified direction.

Parameters:

pardir

the parameter direction in question. Indexing starts at 0.

Implements Go::ParamObjectInt.

Definition at line 150 of file ParamPointInt.h.

virtual std::vector<double> Go::ParamPointInt::getInnerKnotVals	(	int	pardir,
		bool	sort = false
	)			const [inline, virtual]

Return the inner knot values in the specified direction.

Parameters:

	pardir	the parameter direction in question. Indexing starts at 0.
	sort	the returned values may be sorted by the function.

Implements Go::ParamObjectInt.

Definition at line 160 of file ParamPointInt.h.

virtual std::vector<double> Go::ParamPointInt::getCriticalValsAndKnots

(

int

pardir

)

const [inline, virtual]

Return the critical parameter values and inner knots for object.

Parameters:

pardir

the parameter direction in question. Indexing starts at 0.

Implements Go::ParamObjectInt.

Definition at line 171 of file ParamPointInt.h.

virtual int Go::ParamPointInt::getMeshSize

(

int

dir

)

[inline, virtual]

Return the size of the geometric sample mesh in the specified direction.

Parameters:

dir

the parameter direction in question. Indexing starts at 0.

Implements Go::ParamGeomInt.

Definition at line 181 of file ParamPointInt.h.

virtual double Go::ParamPointInt::paramFromMesh	(	int	dir,
		int	idx
	)			[inline, virtual]

Return the corresponding mesh parameter.

Does not apply to a point.

Parameters:

	dir	the parameter direction in question. Indexing starts at 0.
	idx	the mesh idx in the specified direction. Indexing starts at 0.

Implements Go::ParamGeomInt.

Definition at line 190 of file ParamPointInt.h.

virtual double Go::ParamPointInt::startParam

(

int

pardir

)

const [inline, virtual]

Return the start parameter value in the specified direction.

Does not apply to a point.

Parameters:

pardir

the parameter direction in question. Indexing starts at 0.

Implements Go::ParamObjectInt.

Definition at line 200 of file ParamPointInt.h.

virtual double Go::ParamPointInt::endParam

(

int

pardir

)

const [inline, virtual]

Return the end parameter in the specified direction.

Does not apply to a point.

Parameters:

pardir

the parameter direction in question. Indexing starts at 0.

Implements Go::ParamObjectInt.

Definition at line 207 of file ParamPointInt.h.

virtual bool Go::ParamPointInt::boundaryPoint	(	const double *	par,
		double	eps
	)			const [inline, virtual]

Return true if the specified point lies within eps from the boundary.

Parameters:

	par	the parameter in which to evaluate. Size of array should be equal to numParams().
	eps	the tolerance defining boundary neighbourhood.

Implements Go::ParamObjectInt.

Definition at line 215 of file ParamPointInt.h.

virtual void Go::ParamPointInt::subdivide	(	int	pardir,
		double	par,
		std::vector< boost::shared_ptr< ParamGeomInt > > &	subdiv_objs,
		std::vector< boost::shared_ptr< ParamGeomInt > > &	bd_objs
	)			[inline, virtual]

Subdivide the object in the specified parameter direction and parameter value.

Does not apply to a point.

Parameters:

	pardir	direction in which to subdive. Indexing starts at 0.
	par	parameter in which to subdivide.
	subdiv_objs	The subparts of this object. Of the same geometric dimension as this object.
	bd_objs	the boundaries between the returned subdiv_objs. Of geometric dimension 1 less than this object.

Implements Go::ParamGeomInt.

Definition at line 228 of file ParamPointInt.h.

virtual CompositeBox Go::ParamPointInt::compositeBox

(

)

const [virtual]

Create the CompositeBox for the parametric object.

Returns:

The CompositeBox for the parametric object.

Implements Go::ParamGeomInt.

virtual DirectionCone Go::ParamPointInt::directionCone

(

)

const [virtual]

A cone which contains all normals of the object.

As a normal is not defined for a point, the zero vector is returned.

Returns:

A cone which contains all normals of the object.

Implements Go::ParamGeomInt.

virtual void Go::ParamPointInt::getBoundaryObjects

(

std::vector< boost::shared_ptr< BoundaryGeomInt > > &

bd_objs

)

[virtual]

Return the boundary objects of this object.

Parameters:

bd_objs

the boundary objects of this object.

Implements Go::ParamGeomInt.

virtual bool Go::ParamPointInt::isDegenerate	(	double	epsge,
		int	dir,
		double *	par
	)			[inline, virtual]

Verify whether or not the object is degenerate in the specified direction and parameter.

Parameters:

	epsge	the geometric tolerance defining degeneracy.
	dir	the parameter direction in question.
	par	the parameter in which to evaluate. Size of array should be equal to numParams().

Implements Go::ParamGeomInt.

Definition at line 257 of file ParamPointInt.h.

virtual bool Go::ParamPointInt::isSpline

(

)

[inline, virtual]

Verify whether the object is a spline.

Returns:

True if the object is a spline.

Implements Go::ParamGeomInt.

Definition at line 262 of file ParamPointInt.h.

virtual double Go::ParamPointInt::getOptimizedConeAngle	(	Point &	axis1,
		Point &	axis2
	)			[inline, virtual]

We try to treat problems which will never result in a simple case by shrinking the domain slightly, resulting in smaller cones.

This is useful for scenarios where the normals are parallell in a boundary point.

Parameters:

	axis1	first vector defining a projection plane
	axis2	second vector defining a projection plane

Returns:

The optimized cone angle

Implements Go::ParamGeomInt.

Definition at line 272 of file ParamPointInt.h.

RotatedBox Go::ParamPointInt::getRotatedBox

(

std::vector< Point > &

axis

)

const

Create a box containing the geometric sample mesh in the input coordinate system.

Parameters:

axis

the axis defining the coordinate system. The size of vector axis is 2, the last point is given as the cross product axis[0]axis[1].

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

• ParamPointInt.h

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