ExtremaPC_OffsetCurve Class Reference

Point-OffsetCurve extrema computation using grid-based approach. More...

#include <ExtremaPC_OffsetCurve.hxx>

Public Member Functions
	ExtremaPC_OffsetCurve (const Adaptor3d_Curve &theCurve)
	Constructor with curve adaptor (uses full curve domain). Grid is built eagerly at construction time.
	ExtremaPC_OffsetCurve (const Adaptor3d_Curve &theCurve, const ExtremaPC::Domain1D &theDomain)
	Constructor with curve adaptor and parameter domain. Grid is built eagerly at construction time for the specified domain.
	ExtremaPC_OffsetCurve (const ExtremaPC_OffsetCurve &)=delete
	Copy constructor is deleted.
ExtremaPC_OffsetCurve &	operator= (const ExtremaPC_OffsetCurve &)=delete
	Copy assignment operator is deleted.
	ExtremaPC_OffsetCurve (ExtremaPC_OffsetCurve &&)=default
	Move constructor.
ExtremaPC_OffsetCurve &	operator= (ExtremaPC_OffsetCurve &&)=default
	Move assignment operator.
gp_Pnt	Value (double theU) const
	Evaluates point on curve at parameter.
bool	IsBounded () const
	Returns true if domain is bounded.
const ExtremaPC::Domain1D &	Domain () const
	Returns the domain.
const ExtremaPC::Result &	Perform (const gp_Pnt &theP, double theTol, ExtremaPC::SearchMode theMode=ExtremaPC::SearchMode::MinMax) const
	Compute extrema between point P and the curve. Uses domain specified at construction time.
const ExtremaPC::Result &	PerformWithEndpoints (const gp_Pnt &theP, double theTol, ExtremaPC::SearchMode theMode=ExtremaPC::SearchMode::MinMax) const
	Compute extrema between point P and the curve including endpoints. Uses domain specified at construction time.

Detailed Description

Point-OffsetCurve extrema computation using grid-based approach.

Computes the extrema between a 3D point and an offset curve using a grid-based approach with Newton refinement.

The grid is cached for efficiency when performing multiple queries with the same parameter domain.

The algorithm:

1. Build uniform grid using GeomGridEval
2. Linear scan of grid to find candidate intervals (sign changes in F(u))
3. Newton refinement on each candidate interval

Offset curves are handled through the Adaptor3d_Curve interface, which provides uniform access to the offset geometry.

The domain is fixed at construction time and the grid is built eagerly for optimal performance with multiple queries.

Constructor & Destructor Documentation

ExtremaPC_OffsetCurve() [1/4]

ExtremaPC_OffsetCurve::ExtremaPC_OffsetCurve ( const Adaptor3d_Curve & theCurve )

explicit

Constructor with curve adaptor (uses full curve domain). Grid is built eagerly at construction time.

Parameters

[in]

theCurve

curve adaptor for offset curve (must remain valid)

ExtremaPC_OffsetCurve() [2/4]

ExtremaPC_OffsetCurve::ExtremaPC_OffsetCurve	(	const Adaptor3d_Curve &	theCurve,
		const ExtremaPC::Domain1D &	theDomain )

Constructor with curve adaptor and parameter domain. Grid is built eagerly at construction time for the specified domain.

Parameters

[in]	theCurve	curve adaptor for offset curve (must remain valid)
[in]	theDomain	parameter domain (fixed for all queries)

ExtremaPC_OffsetCurve() [3/4]

ExtremaPC_OffsetCurve::ExtremaPC_OffsetCurve ( const ExtremaPC_OffsetCurve & )

delete

Copy constructor is deleted.

ExtremaPC_OffsetCurve() [4/4]

ExtremaPC_OffsetCurve::ExtremaPC_OffsetCurve ( ExtremaPC_OffsetCurve && )

default

Move constructor.

Member Function Documentation

Domain()

const ExtremaPC::Domain1D & ExtremaPC_OffsetCurve::Domain ( ) const

inline

Returns the domain.

IsBounded()

bool ExtremaPC_OffsetCurve::IsBounded ( ) const

inline

Returns true if domain is bounded.

operator=() [1/2]

ExtremaPC_OffsetCurve & ExtremaPC_OffsetCurve::operator= ( const ExtremaPC_OffsetCurve & )

delete

Copy assignment operator is deleted.

operator=() [2/2]

ExtremaPC_OffsetCurve & ExtremaPC_OffsetCurve::operator= ( ExtremaPC_OffsetCurve && )

default

Move assignment operator.

Perform()

const ExtremaPC::Result & ExtremaPC_OffsetCurve::Perform ( const gp_Pnt & theP, double theTol, ExtremaPC::SearchMode theMode = ExtremaPC::SearchMode::MinMax ) const

nodiscard

Compute extrema between point P and the curve. Uses domain specified at construction time.

Parameters

theP	query point
theTol	tolerance for root finding
theMode	search mode (MinMax, Min, or Max)

Returns

const reference to result containing extrema

PerformWithEndpoints()

const ExtremaPC::Result & ExtremaPC_OffsetCurve::PerformWithEndpoints ( const gp_Pnt & theP, double theTol, ExtremaPC::SearchMode theMode = ExtremaPC::SearchMode::MinMax ) const

nodiscard

Compute extrema between point P and the curve including endpoints. Uses domain specified at construction time.

Parameters

theP	query point
theTol	tolerance for root finding
theMode	search mode (MinMax, Min, or Max)

Returns

const reference to result containing interior + endpoint extrema

Value()

gp_Pnt ExtremaPC_OffsetCurve::Value

(

double

theU

)

const

Evaluates point on curve at parameter.

Parameters

theU

parameter

Returns

point on curve

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

• ExtremaPC_OffsetCurve.hxx