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// Created on: 1997-11-20
// 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_SweepFunction_HeaderFile
#define _GeomFill_SweepFunction_HeaderFile
#include <Standard.hxx>
#include <Standard_Type.hxx>
#include <gp_Mat.hxx>
#include <gp_Vec.hxx>
#include <Approx_SweepFunction.hxx>
#include <gp_Pnt.hxx>
#include <NCollection_Array1.hxx>
#include <gp_Pnt2d.hxx>
#include <gp_Vec2d.hxx>
#include <Standard_Integer.hxx>
#include <GeomAbs_Shape.hxx>
class GeomFill_LocationLaw;
class GeomFill_SectionLaw;
class gp_Pnt;
//! Function to approximate by SweepApproximation from
//! Approx. To build general sweep Surface.
class GeomFill_SweepFunction : public Approx_SweepFunction
{
public:
Standard_EXPORT GeomFill_SweepFunction(const occ::handle<GeomFill_SectionLaw>& Section,
const occ::handle<GeomFill_LocationLaw>& Location,
const double FirstParameter,
const double FirstParameterOnS,
const double RatioParameterOnS);
//! compute the section for v = param
Standard_EXPORT bool D0(const double Param,
const double First,
const double Last,
NCollection_Array1<gp_Pnt>& Poles,
NCollection_Array1<gp_Pnt2d>& Poles2d,
NCollection_Array1<double>& Weigths) override;
//! compute the first derivative in v direction of the
//! section for v = param
Standard_EXPORT bool D1(const double Param,
const double First,
const double Last,
NCollection_Array1<gp_Pnt>& Poles,
NCollection_Array1<gp_Vec>& DPoles,
NCollection_Array1<gp_Pnt2d>& Poles2d,
NCollection_Array1<gp_Vec2d>& DPoles2d,
NCollection_Array1<double>& Weigths,
NCollection_Array1<double>& DWeigths) override;
//! compute the second derivative in v direction of the
//! section for v = param
Standard_EXPORT bool D2(const double Param,
const double First,
const double Last,
NCollection_Array1<gp_Pnt>& Poles,
NCollection_Array1<gp_Vec>& DPoles,
NCollection_Array1<gp_Vec>& D2Poles,
NCollection_Array1<gp_Pnt2d>& Poles2d,
NCollection_Array1<gp_Vec2d>& DPoles2d,
NCollection_Array1<gp_Vec2d>& D2Poles2d,
NCollection_Array1<double>& Weigths,
NCollection_Array1<double>& DWeigths,
NCollection_Array1<double>& D2Weigths) override;
//! get the number of 2d curves to approximate.
Standard_EXPORT int Nb2dCurves() const override;
//! get the format of a section
Standard_EXPORT void SectionShape(int& NbPoles, int& NbKnots, int& Degree) const override;
//! get the Knots of the section
Standard_EXPORT void Knots(NCollection_Array1<double>& TKnots) const override;
//! get the Multplicities of the section
Standard_EXPORT void Mults(NCollection_Array1<int>& TMults) const override;
//! Returns if the section is rational or not
Standard_EXPORT bool IsRational() const override;
//! Returns the number of intervals for continuity
//! <S>. May be one if Continuity(me) >= <S>
Standard_EXPORT int NbIntervals(const GeomAbs_Shape S) const 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 void Intervals(NCollection_Array1<double>& T,
const GeomAbs_Shape S) const override;
//! Sets the bounds of the parametric interval on
//! the function
//! This determines the derivatives in these values if the
//! function is not Cn.
Standard_EXPORT void SetInterval(const double First, const double Last) override;
//! Returns the resolutions in the sub-space 2d <Index>
//! This information is useful to find a good tolerance in
//! 2d approximation.
//! Warning: Used only if Nb2dCurve > 0
Standard_EXPORT void Resolution(const int Index,
const double Tol,
double& TolU,
double& TolV) const 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 void GetTolerance(const double BoundTol,
const double SurfTol,
const double AngleTol,
NCollection_Array1<double>& Tol3d) const override;
//! Is useful, if <me> has to be run numerical
//! algorithme to perform D0, D1 or D2
Standard_EXPORT void SetTolerance(const double Tol3d, const double Tol2d) override;
//! Get the barycentre of Surface. An very poor
//! estimation is sufficient. This information is useful
//! to perform well conditioned rational approximation.
//! Warning: Used only if <me> IsRational
Standard_EXPORT gp_Pnt BarycentreOfSurf() const override;
//! Returns the length of the maximum section. This
//! information is useful to perform well conditioned rational
//! approximation.
Standard_EXPORT double MaximalSection() const override;
//! Compute the minimal value of weight for each poles
//! of all sections. This information is useful to
//! perform well conditioned rational approximation.
//! Warning: Used only if <me> IsRational
Standard_EXPORT void GetMinimalWeight(NCollection_Array1<double>& Weigths) const override;
DEFINE_STANDARD_RTTIEXT(GeomFill_SweepFunction, Approx_SweepFunction)
private:
occ::handle<GeomFill_LocationLaw> myLoc;
occ::handle<GeomFill_SectionLaw> mySec;
double myf;
double myfOnS;
double myRatio;
gp_Mat M;
gp_Mat DM;
gp_Mat D2M;
gp_Vec V;
gp_Vec DV;
gp_Vec D2V;
};
#endif // _GeomFill_SweepFunction_HeaderFile
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