0027299: Incorrect result of the normal projection algorithm

[occt.git] / src / ProjLib / ProjLib_CompProjectedCurve.hxx

// Created on: 1997-09-22
// Created by: Roman BORISOV
// 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 _ProjLib_CompProjectedCurve_HeaderFile
#define _ProjLib_CompProjectedCurve_HeaderFile

#include <Standard.hxx>
#include <Standard_DefineAlloc.hxx>
#include <Standard_Handle.hxx>

#include <Standard_Integer.hxx>
#include <ProjLib_HSequenceOfHSequenceOfPnt.hxx>
#include <Standard_Real.hxx>
#include <TColStd_HArray1OfBoolean.hxx>
#include <TColStd_HArray1OfReal.hxx>
#include <Adaptor2d_Curve2d.hxx>
#include <Standard_Boolean.hxx>
#include <GeomAbs_Shape.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <GeomAbs_CurveType.hxx>
class Adaptor3d_HSurface;
class Adaptor3d_HCurve;
class Standard_OutOfRange;
class Standard_NoSuchObject;
class Standard_DomainError;
class Standard_NotImplemented;
class gp_Pnt2d;
class gp_Vec2d;
class Adaptor2d_HCurve2d;



class ProjLib_CompProjectedCurve  : public Adaptor2d_Curve2d
{
public:

  DEFINE_STANDARD_ALLOC

  
  Standard_EXPORT ProjLib_CompProjectedCurve();
  
  //! try to find all solutions
  Standard_EXPORT ProjLib_CompProjectedCurve(const Handle(Adaptor3d_HSurface)& S, const Handle(Adaptor3d_HCurve)& C, const Standard_Real TolU, const Standard_Real TolV);
  
  //! this constructor tries to optimize the search using the
  //! assumption that maximum distance between surface and curve less or
  //! equal then MaxDist.
  //! if MaxDist < 0 then algorithm works as above.
  Standard_EXPORT ProjLib_CompProjectedCurve(const Handle(Adaptor3d_HSurface)& S, const Handle(Adaptor3d_HCurve)& C, const Standard_Real TolU, const Standard_Real TolV, const Standard_Real MaxDist);
  
  //! computes a set of projected point and determine the
  //! continuous parts of the projected  curves. The  points
  //! corresponding to a projection on the bounds of the surface are
  //! included  in this set of points.
  Standard_EXPORT void Init();
  
  //! Changes the surface.
  Standard_EXPORT void Load (const Handle(Adaptor3d_HSurface)& S);
  
  //! Changes the  curve.
  Standard_EXPORT void Load (const Handle(Adaptor3d_HCurve)& C);
  
  Standard_EXPORT const Handle(Adaptor3d_HSurface)& GetSurface() const;
  
  Standard_EXPORT const Handle(Adaptor3d_HCurve)& GetCurve() const;
  
  Standard_EXPORT void GetTolerance (Standard_Real& TolU, Standard_Real& TolV) const;
  
  //! returns the number of continuous part of the projected curve
  Standard_EXPORT Standard_Integer NbCurves() const;
  
  //! returns the bounds of the continuous part corresponding to Index
  Standard_EXPORT void Bounds (const Standard_Integer Index, Standard_Real& Udeb, Standard_Real& Ufin) const;
  
  //! returns  True  if  part  of  projection with  number  Index is  a  single  point  and  writes  its  coordinates in  P
  Standard_EXPORT Standard_Boolean IsSinglePnt (const Standard_Integer Index, gp_Pnt2d& P) const;
  
  //! returns  True  if  part  of  projection with  number  Index is  an  u-isoparametric curve  of  input  surface
  Standard_EXPORT Standard_Boolean IsUIso (const Standard_Integer Index, Standard_Real& U) const;
  
  //! returns  True  if  part  of  projection with  number  Index is  an  v-isoparametric curve  of  input  surface
  Standard_EXPORT Standard_Boolean IsVIso (const Standard_Integer Index, Standard_Real& V) const;
  
  //! Computes the point of parameter U on the curve.
  Standard_EXPORT gp_Pnt2d Value (const Standard_Real U) const Standard_OVERRIDE;
  
  //! Computes the point of parameter U on the curve.
  Standard_EXPORT void D0 (const Standard_Real U, gp_Pnt2d& P) const Standard_OVERRIDE;
  
  //! Computes the point of parameter U on the curve with its
  //! first derivative.
  //! Raised if the continuity of the current interval
  //! is not C1.
  Standard_EXPORT void D1 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V) const Standard_OVERRIDE;
  

  //! Returns the point P of parameter U, the first and second
  //! derivatives V1 and V2.
  //! Raised if the continuity of the current interval
  //! is not C2.
  Standard_EXPORT void D2 (const Standard_Real U, gp_Pnt2d& P, gp_Vec2d& V1, gp_Vec2d& V2) const Standard_OVERRIDE;
  

  //! The returned vector gives the value of the derivative for the
  //! order of derivation N.
  //! Raised if N < 1.
  //! Raised if N > 2.
  Standard_EXPORT gp_Vec2d DN (const Standard_Real U, const Standard_Integer N) const Standard_OVERRIDE;
  
  //! Returns  the  first  parameter of  the  curve  C
  //! which  has  a  projection  on  S.
  Standard_EXPORT Standard_Real FirstParameter() const Standard_OVERRIDE;
  
  //! Returns  the  last  parameter of  the  curve  C
  //! which  has  a  projection  on  S.
  Standard_EXPORT Standard_Real LastParameter() const Standard_OVERRIDE;
  
  //! Returns  the number  of  intervals which  define
  //! an  S  continuous  part  of  the  projected  curve
  Standard_EXPORT Standard_Integer NbIntervals (const GeomAbs_Shape S) const Standard_OVERRIDE;
  
  //! Returns    a  curve equivalent   of  <me>  between
  //! parameters <First>  and <Last>. <Tol>  is used  to
  //! test for 2d points confusion.
  //! If <First> >= <Last>
  Standard_EXPORT Handle(Adaptor2d_HCurve2d) Trim (const Standard_Real FirstParam, const Standard_Real LastParam, const Standard_Real Tol) const Standard_OVERRIDE;
  
  //! Returns  the  parameters  corresponding  to
  //! S  discontinuities.
  //!
  //! The array must provide  enough room to  accommodate
  //! for the parameters. i.e. T.Length() > NbIntervals()
  Standard_EXPORT void Intervals (TColStd_Array1OfReal& T, const GeomAbs_Shape S) const Standard_OVERRIDE;
  
  //! returns  the  maximum  distance  between
  //! curve  to  project  and  surface
  Standard_EXPORT Standard_Real MaxDistance (const Standard_Integer Index) const;
  
  Standard_EXPORT const Handle(ProjLib_HSequenceOfHSequenceOfPnt)& GetSequence() const;
  
  //! Returns  the  type of the   curve  in the  current
  //! interval :   Line,   Circle,   Ellipse, Hyperbola,
  //! Parabola, BezierCurve, BSplineCurve, OtherCurve.
  Standard_EXPORT GeomAbs_CurveType GetType() const Standard_OVERRIDE;




protected:





private:

  //! This method performs check possibility of optimization traps and tries to go out from them.
  //@return thePoint - input / corrected point.
  Standard_EXPORT void UpdateTripleByTrapCriteria(gp_Pnt &thePoint) const;

  Standard_EXPORT void BuildIntervals (const GeomAbs_Shape S) const;


  Handle(Adaptor3d_HSurface) mySurface;
  Handle(Adaptor3d_HCurve) myCurve;
  Standard_Integer myNbCurves;
  Handle(ProjLib_HSequenceOfHSequenceOfPnt) mySequence;
  Standard_Real myTolU;
  Standard_Real myTolV;
  Standard_Real myMaxDist;
  Handle(TColStd_HArray1OfBoolean) myUIso;
  Handle(TColStd_HArray1OfBoolean) myVIso;
  Handle(TColStd_HArray1OfBoolean) mySnglPnts;
  Handle(TColStd_HArray1OfReal) myMaxDistance;
  Handle(TColStd_HArray1OfReal) myTabInt;
};







#endif // _ProjLib_CompProjectedCurve_HeaderFile