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// This file is generated by WOK (CPPExt).
// Please do not edit this file; modify original file instead.
// The copyright and license terms as defined for the original file apply to
// this header file considered to be the "object code" form of the original source.
#ifndef _GeomAPI_ExtremaCurveSurface_HeaderFile
#define _GeomAPI_ExtremaCurveSurface_HeaderFile
#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Macro.hxx>
#include <Standard_Boolean.hxx>
#include <Standard_Integer.hxx>
#include <Extrema_ExtCS.hxx>
#include <Handle_Geom_Curve.hxx>
#include <Handle_Geom_Surface.hxx>
#include <Quantity_Parameter.hxx>
#include <Quantity_Length.hxx>
class Standard_OutOfRange;
class StdFail_NotDone;
class Geom_Curve;
class Geom_Surface;
class gp_Pnt;
class Extrema_ExtCS;
//! Describes functions for computing all the extrema
//! between a curve and a surface.
//! An ExtremaCurveSurface algorithm minimizes or
//! maximizes the distance between a point on the curve
//! and a point on the surface. Thus, it computes start
//! and end points of perpendiculars common to the
//! curve and the surface (an intersection point is not an
//! extremum except where the curve and the surface
//! are tangential at this point).
//! Solutions consist of pairs of points, and an extremum
//! is considered to be a segment joining the two points of a solution.
//! An ExtremaCurveSurface object provides a framework for:
//! - defining the construction of the extrema,
//! - implementing the construction algorithm, and
//! - consulting the results.
//! Warning
//! In some cases, the nearest points between a curve
//! and a surface do not correspond to one of the
//! computed extrema. Instead, they may be given by:
//! - a point of a bounding curve of the surface and one of the following:
//! - its orthogonal projection on the curve,
//! - a limit point of the curve; or
//! - a limit point of the curve and its projection on the surface; or
//! - an intersection point between the curve and the surface.
class GeomAPI_ExtremaCurveSurface
{
public:
DEFINE_STANDARD_ALLOC
//! Constructs an empty algorithm for computing
//! extrema between a curve and a surface. Use an
//! Init function to define the curve and the surface on
//! which it is going to work.
Standard_EXPORT GeomAPI_ExtremaCurveSurface();
//! Computes the extrema distances between the
//! curve <C> and the surface <S>.
Standard_EXPORT GeomAPI_ExtremaCurveSurface(const Handle(Geom_Curve)& Curve, const Handle(Geom_Surface)& Surface);
//! Computes the extrema distances between the
//! curve <C> and the surface <S>. The solution
//! point are computed in the domain [Wmin,Wmax] of
//! the curve and in the domain [Umin,Umax]
//! [Vmin,Vmax] of the surface.
//! Warning
//! Use the function NbExtrema to obtain the number
//! of solutions. If this algorithm fails, NbExtrema returns 0.
Standard_EXPORT GeomAPI_ExtremaCurveSurface(const Handle(Geom_Curve)& Curve, const Handle(Geom_Surface)& Surface, const Quantity_Parameter Wmin, const Quantity_Parameter Wmax, const Quantity_Parameter Umin, const Quantity_Parameter Umax, const Quantity_Parameter Vmin, const Quantity_Parameter Vmax);
//! Computes the extrema distances between the
//! curve <C> and the surface <S>.
Standard_EXPORT void Init (const Handle(Geom_Curve)& Curve, const Handle(Geom_Surface)& Surface) ;
//! Computes the extrema distances between the
//! curve <C> and the surface <S>. The solution
//! point are computed in the domain [Wmin,Wmax] of
//! the curve and in the domain [Umin,Umax]
//! [Vmin,Vmax] of the surface.
//! Warning
//! Use the function NbExtrema to obtain the number
//! of solutions. If this algorithm fails, NbExtrema returns 0.
Standard_EXPORT void Init (const Handle(Geom_Curve)& Curve, const Handle(Geom_Surface)& Surface, const Quantity_Parameter Wmin, const Quantity_Parameter Wmax, const Quantity_Parameter Umin, const Quantity_Parameter Umax, const Quantity_Parameter Vmin, const Quantity_Parameter Vmax) ;
//! Returns the number of extrema computed by this algorithm.
//! Note: if this algorithm fails, NbExtrema returns 0.
Standard_EXPORT Standard_Integer NbExtrema() const;
Standard_EXPORT operator Standard_Integer() const;
//! Returns the points P1 on the curve and P2 on the
//! surface, which are the ends of the extremum of index
//! Index computed by this algorithm.
//! Exceptions
//! Standard_OutOfRange if Index is not in the range [
//! 1,NbExtrema ], where NbExtrema is the
//! number of extrema computed by this algorithm.
Standard_EXPORT void Points (const Standard_Integer Index, gp_Pnt& P1, gp_Pnt& P2) const;
//! Returns the parameters W of the point on the curve,
//! and (U,V) of the point on the surface, which are the
//! ends of the extremum of index Index computed by this algorithm.
//! Exceptions
//! Standard_OutOfRange if Index is not in the range [
//! 1,NbExtrema ], where NbExtrema is the
//! number of extrema computed by this algorithm.
Standard_EXPORT void Parameters (const Standard_Integer Index, Quantity_Parameter& W, Quantity_Parameter& U, Quantity_Parameter& V) const;
//! Computes the distance between the end points of the
//! extremum of index Index computed by this algorithm.
//! Exceptions
//! Standard_OutOfRange if index is not in the range [
//! 1,NbExtrema ], where NbExtrema is the
//! number of extrema computed by this algorithm.
Standard_EXPORT Quantity_Length Distance (const Standard_Integer Index) const;
//! Returns the points PC on the curve and PS on the
//! surface, which are the ends of the shortest extremum computed by this algorithm.
//! Exceptions - StdFail_NotDone if this algorithm fails.
Standard_EXPORT void NearestPoints (gp_Pnt& PC, gp_Pnt& PS) const;
//! Returns the parameters W of the point on the curve
//! and (U,V) of the point on the surface, which are the
//! ends of the shortest extremum computed by this algorithm.
//! Exceptions - StdFail_NotDone if this algorithm fails.
Standard_EXPORT void LowerDistanceParameters (Quantity_Parameter& W, Quantity_Parameter& U, Quantity_Parameter& V) const;
//! Computes the distance between the end points of the
//! shortest extremum computed by this algorithm.
//! Exceptions - StdFail_NotDone if this algorithm fails.
Standard_EXPORT Quantity_Length LowerDistance() const;
Standard_EXPORT operator Standard_Real() const;
//! Returns the algorithmic object from Extrema
const Extrema_ExtCS& Extrema() const;
protected:
private:
Standard_Boolean myIsDone;
Standard_Integer myIndex;
Extrema_ExtCS myExtCS;
};
#include <GeomAPI_ExtremaCurveSurface.lxx>
#endif // _GeomAPI_ExtremaCurveSurface_HeaderFile
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