Computes the bounding box for a curve in 2d .
Functions to add a 2D curve to a bounding box.
The 2D curve is defined from a Geom2d curve.
#include <BndLib_Add2dCurve.hxx>
Static Public Member Functions |
static void | Add (const Adaptor2d_Curve2d &C, const Standard_Real Tol, Bnd_Box2d &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 Adaptor2d_Curve2d &C, const Standard_Real U1, const Standard_Real U2, const Standard_Real Tol, Bnd_Box2d &B) |
| Adds to the bounding box Bthe arc of the curve C limited by the two parameter
values P1 and P2.
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:
|
Member Function Documentation
- 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 2D curve from the package Geom2d
- and those required of the curve by the computation algorithm.
The adapted curve is created in the following way:
Handle(Geom2d_Curve) mycurve = ...
;
Geom2dAdaptor_Curve C(mycurve);
The bounding box B is then enlarged by adding it:
Bnd_Box2d B;
// ...
Standard_Real Tol = ... ;
Add2dCurve::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.
- 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 2D curve from the package Geom2d
- and those required of the curve by the computation algorithm.
The adapted curve is created in the following way:
Handle(Geom2d_Curve) mycurve = ...
;
Geom2dAdaptor_Curve C(mycurve);
The bounding box B is then enlarged by adding it:
Bnd_Box2d B;
// ...
Standard_Real Tol = ... ;
Add2dCurve::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.
The documentation for this class was generated from the following file: