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occt/src/GeomFill/GeomFill_CircularBlendFunc.hxx

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// Created on: 1997-07-11
// Created by: Philippe MANGIN
// Copyright (c) 1997-1999 Matra Datavision
// Copyright (c) 1999-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _GeomFill_CircularBlendFunc_HeaderFile
#define _GeomFill_CircularBlendFunc_HeaderFile
#include <Standard.hxx>
#include <Standard_Type.hxx>
#include <gp_Pnt.hxx>
#include <Standard_Integer.hxx>
#include <Convert_ParameterisationType.hxx>
#include <Approx_SweepFunction.hxx>
#include <TColgp_Array1OfPnt.hxx>
#include <TColgp_Array1OfPnt2d.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <TColgp_Array1OfVec.hxx>
#include <TColgp_Array1OfVec2d.hxx>
#include <TColStd_Array1OfInteger.hxx>
#include <GeomAbs_Shape.hxx>
class GeomFill_CircularBlendFunc;
DEFINE_STANDARD_HANDLE(GeomFill_CircularBlendFunc, Approx_SweepFunction)
//! Circular Blend Function to approximate by
//! SweepApproximation from Approx
class GeomFill_CircularBlendFunc : public Approx_SweepFunction
{
public:
//! Create a Blend with a constant radius with 2
//! guide-line. <FShape> sets the type of fillet
//! surface. The -- default value is Convert_TgtThetaOver2 (classical --
//! nurbs -- representation of circles).
//! ChFi3d_QuasiAngular -- corresponds to a nurbs
//! representation of circles -- which
//! parameterisation matches the circle one. --
//! ChFi3d_Polynomial corresponds to a polynomial --
//! representation of circles.
Standard_EXPORT GeomFill_CircularBlendFunc(const Handle(Adaptor3d_Curve)& Path, const Handle(Adaptor3d_Curve)& Curve1, const Handle(Adaptor3d_Curve)& Curve2, const Standard_Real Radius, const Standard_Boolean Polynomial = Standard_False);
//! compute the section for v = param
Standard_EXPORT virtual Standard_Boolean D0 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt& Poles, TColgp_Array1OfPnt2d& Poles2d, TColStd_Array1OfReal& Weigths) Standard_OVERRIDE;
//! compute the first derivative in v direction of the
//! section for v = param
Standard_EXPORT virtual Standard_Boolean D1 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt& Poles, TColgp_Array1OfVec& DPoles, TColgp_Array1OfPnt2d& Poles2d, TColgp_Array1OfVec2d& DPoles2d, TColStd_Array1OfReal& Weigths, TColStd_Array1OfReal& DWeigths) Standard_OVERRIDE;
//! compute the second derivative in v direction of the
//! section for v = param
Standard_EXPORT virtual Standard_Boolean D2 (const Standard_Real Param, const Standard_Real First, const Standard_Real Last, TColgp_Array1OfPnt& Poles, TColgp_Array1OfVec& DPoles, TColgp_Array1OfVec& D2Poles, TColgp_Array1OfPnt2d& Poles2d, TColgp_Array1OfVec2d& DPoles2d, TColgp_Array1OfVec2d& D2Poles2d, TColStd_Array1OfReal& Weigths, TColStd_Array1OfReal& DWeigths, TColStd_Array1OfReal& D2Weigths) Standard_OVERRIDE;
//! get the number of 2d curves to approximate.
Standard_EXPORT virtual Standard_Integer Nb2dCurves() const Standard_OVERRIDE;
//! get the format of an section
Standard_EXPORT virtual void SectionShape (Standard_Integer& NbPoles, Standard_Integer& NbKnots, Standard_Integer& Degree) const Standard_OVERRIDE;
//! get the Knots of the section
Standard_EXPORT virtual void Knots (TColStd_Array1OfReal& TKnots) const Standard_OVERRIDE;
//! get the Multplicities of the section
Standard_EXPORT virtual void Mults (TColStd_Array1OfInteger& TMults) const Standard_OVERRIDE;
//! Returns if the section is rational or not
Standard_EXPORT virtual Standard_Boolean IsRational() const Standard_OVERRIDE;
//! Returns the number of intervals for continuity
//! <S>. May be one if Continuity(me) >= <S>
Standard_EXPORT virtual Standard_Integer NbIntervals (const GeomAbs_Shape S) const Standard_OVERRIDE;
//! Stores in <T> the parameters bounding the intervals
//! of continuity <S>.
//!
//! The array must provide enough room to accommodate
//! for the parameters. i.e. T.Length() > NbIntervals()
Standard_EXPORT virtual void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const Standard_OVERRIDE;
//! Sets the bounds of the parametric interval on
//! the fonction
//! This determines the derivatives in these values if the
//! function is not Cn.
Standard_EXPORT virtual void SetInterval (const Standard_Real First, const Standard_Real Last) Standard_OVERRIDE;
//! Returns the tolerance to reach in approximation
//! to respect
//! BoundTol error at the Boundary
//! AngleTol tangent error at the Boundary (in radian)
//! SurfTol error inside the surface.
Standard_EXPORT virtual void GetTolerance (const Standard_Real BoundTol, const Standard_Real SurfTol, const Standard_Real AngleTol, TColStd_Array1OfReal& Tol3d) const Standard_OVERRIDE;
//! Is usfull, if (me) have to be run numerical
//! algorithme to perform D0, D1 or D2
Standard_EXPORT virtual void SetTolerance (const Standard_Real Tol3d, const Standard_Real Tol2d) Standard_OVERRIDE;
//! Get the barycentre of Surface. An very poor
//! estimation is sufficient. This information is useful
//! to perform well conditioned rational approximation.
Standard_EXPORT virtual gp_Pnt BarycentreOfSurf() const Standard_OVERRIDE;
//! Returns the length of the maximum section. This
//! information is useful to perform well conditioned rational
//! approximation.
Standard_EXPORT virtual Standard_Real MaximalSection() const Standard_OVERRIDE;
//! Compute the minimal value of weight for each poles
//! of all sections. This information is useful to
//! perform well conditioned rational approximation.
Standard_EXPORT virtual void GetMinimalWeight (TColStd_Array1OfReal& Weigths) const Standard_OVERRIDE;
DEFINE_STANDARD_RTTIEXT(GeomFill_CircularBlendFunc,Approx_SweepFunction)
protected:
private:
Standard_EXPORT void Discret();
gp_Pnt myBary;
Standard_Real myRadius;
Standard_Real maxang;
Standard_Real minang;
Standard_Real distmin;
Handle(Adaptor3d_Curve) myPath;
Handle(Adaptor3d_Curve) myCurve1;
Handle(Adaptor3d_Curve) myCurve2;
Handle(Adaptor3d_Curve) myTPath;
Handle(Adaptor3d_Curve) myTCurve1;
Handle(Adaptor3d_Curve) myTCurve2;
Standard_Integer myDegree;
Standard_Integer myNbKnots;
Standard_Integer myNbPoles;
Convert_ParameterisationType myTConv;
Standard_Boolean myreverse;
};
#endif // _GeomFill_CircularBlendFunc_HeaderFile