Open CASCADE Technology 7.8.0
Static Public Member Functions
BndLib_Add3dCurve Class Reference

Computes the bounding box for a curve in 3d. Functions to add a 3D curve to a bounding box. The 3D curve is defined from a Geom curve. More...

#include <BndLib_Add3dCurve.hxx>

Static Public Member Functions

static void Add (const Adaptor3d_Curve &C, const Standard_Real Tol, Bnd_Box &B)
 Adds to the bounding box B the curve C B is then enlarged by the tolerance value Tol. Note: depending on the type of curve, one of the following representations of the curve C is used to include it in the bounding box B:
 
static void Add (const Adaptor3d_Curve &C, const Standard_Real U1, const Standard_Real U2, const Standard_Real Tol, Bnd_Box &B)
 Adds to the bounding box B the curve C the arc of the curve C limited by the two parameter values P1 and P2. Note: depending on the type of curve, one of the following representations of the curve C is used to include it in the bounding box B:
 
static void AddOptimal (const Adaptor3d_Curve &C, const Standard_Real Tol, Bnd_Box &B)
 Adds to the bounding box B the curve C These methods use more precise algorithms for building bnd box then methods Add(...)
 
static void AddOptimal (const Adaptor3d_Curve &C, const Standard_Real U1, const Standard_Real U2, const Standard_Real Tol, Bnd_Box &B)
 
static void AddGenCurv (const Adaptor3d_Curve &C, const Standard_Real UMin, const Standard_Real UMax, const Standard_Real Tol, Bnd_Box &B)
 Adds to the bounding box B the curve C using numerical minimization algorithms This method is used in AddOptimal for not analytical curves. if Tol < Precision::Confusion(), Precision:;Confusion is used as computation tolerance.
 

Detailed Description

Computes the bounding box for a curve in 3d. Functions to add a 3D curve to a bounding box. The 3D curve is defined from a Geom curve.

Member Function Documentation

◆ Add() [1/2]

static void BndLib_Add3dCurve::Add ( const Adaptor3d_Curve &  C,
const Standard_Real  Tol,
Bnd_Box &  B 
)
static

Adds to the bounding box B the curve C B is then enlarged by the tolerance value Tol. Note: depending on the type of curve, one of the following representations of the curve C is used to include it in the bounding box B:

  • an exact representation if C is built from a line, a circle or a conic curve,
  • the poles of the curve if C is built from a Bezier curve or a BSpline curve, if not, the points of an approximation of the curve C. Warning C is an adapted curve, that is, an object which is an interface between:
  • the services provided by a 3D curve from the package Geom
  • and those required of the curve by the computation algorithm. The adapted curve is created in the following way: Handle(Geom_Curve) mycurve = ... ; GeomAdaptor_Curve C(mycurve); The bounding box B is then enlarged by adding it: Bnd_Box B; // ... Standard_Real Tol = ... ; Add3dCurve::Add ( C, Tol, B ); Exceptions Standard_Failure if the curve is built from:
  • a Geom_Line, or
  • a Geom_Parabola, or
  • a Geom_Hyperbola, and P1 and P2 are either two negative infinite real numbers, or two positive infinite real numbers.

◆ Add() [2/2]

static void BndLib_Add3dCurve::Add ( const Adaptor3d_Curve &  C,
const Standard_Real  U1,
const Standard_Real  U2,
const Standard_Real  Tol,
Bnd_Box &  B 
)
static

Adds to the bounding box B the curve C the arc of the curve C limited by the two parameter values P1 and P2. Note: depending on the type of curve, one of the following representations of the curve C is used to include it in the bounding box B:

  • an exact representation if C is built from a line, a circle or a conic curve,
  • the poles of the curve if C is built from a Bezier curve or a BSpline curve, if not, the points of an approximation of the curve C. Warning C is an adapted curve, that is, an object which is an interface between:
  • the services provided by a 3D curve from the package Geom
  • and those required of the curve by the computation algorithm. The adapted curve is created in the following way: Handle(Geom_Curve) mycurve = ... ; GeomAdaptor_Curve C(mycurve); The bounding box B is then enlarged by adding it: Bnd_Box B; // ... Standard_Real Tol = ... ; Add3dCurve::Add ( C, Tol, B ); Exceptions Standard_Failure if the curve is built from:
  • a Geom_Line, or
  • a Geom_Parabola, or
  • a Geom_Hyperbola, and P1 and P2 are either two negative infinite real numbers, or two positive infinite real numbers.

◆ AddGenCurv()

static void BndLib_Add3dCurve::AddGenCurv ( const Adaptor3d_Curve &  C,
const Standard_Real  UMin,
const Standard_Real  UMax,
const Standard_Real  Tol,
Bnd_Box &  B 
)
static

Adds to the bounding box B the curve C using numerical minimization algorithms This method is used in AddOptimal for not analytical curves. if Tol < Precision::Confusion(), Precision:;Confusion is used as computation tolerance.

◆ AddOptimal() [1/2]

static void BndLib_Add3dCurve::AddOptimal ( const Adaptor3d_Curve &  C,
const Standard_Real  Tol,
Bnd_Box &  B 
)
static

Adds to the bounding box B the curve C These methods use more precise algorithms for building bnd box then methods Add(...)

◆ AddOptimal() [2/2]

static void BndLib_Add3dCurve::AddOptimal ( const Adaptor3d_Curve &  C,
const Standard_Real  U1,
const Standard_Real  U2,
const Standard_Real  Tol,
Bnd_Box &  B 
)
static
The documentation for this class was generated from the following file:
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