include/opencascade/GeomPlate_BuildAveragePlane.hxx

0001 // Created on: 1996-03-18
0002 // Created by: Stagiaire Frederic CALOONE
0003 // Copyright (c) 1996-1999 Matra Datavision
0004 // Copyright (c) 1999-2014 OPEN CASCADE SAS
0005 //
0006 // This file is part of Open CASCADE Technology software library.
0007 //
0008 // This library is free software; you can redistribute it and/or modify it under
0009 // the terms of the GNU Lesser General Public License version 2.1 as published
0010 // by the Free Software Foundation, with special exception defined in the file
0011 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0012 // distribution for complete text of the license and disclaimer of any warranty.
0013 //
0014 // Alternatively, this file may be used under the terms of Open CASCADE
0015 // commercial license or contractual agreement.
0016
0017 #ifndef _GeomPlate_BuildAveragePlane_HeaderFile
0018 #define _GeomPlate_BuildAveragePlane_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022 #include <Standard_Handle.hxx>
0023
0024 #include <TColgp_HArray1OfPnt.hxx>
0025 #include <gp_Vec.hxx>
0026 #include <gp_Pnt.hxx>
0027 #include <Standard_Integer.hxx>
0028 #include <TColgp_SequenceOfVec.hxx>
0029 #include <GeomPlate_SequenceOfAij.hxx>
0030 class Geom_Plane;
0031 class Geom_Line;
0032
0033
0034 //! This class computes an average inertial plane with an
0035 //! array of points.
0036 //! Computes the initial surface (average plane) in the cases
0037 //! when the initial surface is not given.
0038 class GeomPlate_BuildAveragePlane
0039 {
0040 public:
0041
0042   DEFINE_STANDARD_ALLOC
0043
0044
0045   //! Tol is a  Tolerance to make the difference between
0046   //! the result plane and the result line.
0047   //! if POption = 1 : automatical parametrisation
0048   //! if POption = 2 : parametrisation by eigen vectors
0049   //! if NOption = 1 : the average plane is the inertial plane.
0050   //! if NOption = 2 : the average plane is the plane of max. flux.
0051   Standard_EXPORT GeomPlate_BuildAveragePlane(const Handle(TColgp_HArray1OfPnt)& Pts, const Standard_Integer NbBoundPoints, const Standard_Real Tol, const Standard_Integer POption, const Standard_Integer NOption);
0052
0053   //! Creates the plane from the "best vector"
0054   Standard_EXPORT GeomPlate_BuildAveragePlane(const TColgp_SequenceOfVec& Normals, const Handle(TColgp_HArray1OfPnt)& Pts);
0055
0056
0057   //! Return the average Plane.
0058   Standard_EXPORT Handle(Geom_Plane) Plane() const;
0059
0060
0061   //! Return a Line when 2 eigenvalues are null.
0062   Standard_EXPORT Handle(Geom_Line) Line() const;
0063
0064   //! return OK if is a plane.
0065   Standard_EXPORT Standard_Boolean IsPlane() const;
0066
0067   //! return OK if is a line.
0068   Standard_EXPORT Standard_Boolean IsLine() const;
0069
0070   //! computes the   minimal box  to include  all normal
0071   //! projection points of the initial array  on the plane.
0072   Standard_EXPORT void MinMaxBox (Standard_Real& Umin, Standard_Real& Umax, Standard_Real& Vmin, Standard_Real& Vmax) const;
0073
0074   Standard_EXPORT static Standard_Boolean HalfSpace (const TColgp_SequenceOfVec& NewNormals, TColgp_SequenceOfVec& Normals, GeomPlate_SequenceOfAij& Bset, const Standard_Real LinTol, const Standard_Real AngTol);
0075
0076
0077
0078
0079 protected:
0080
0081
0082
0083
0084
0085 private:
0086
0087
0088   //! Computes a base of the average plane defined by (myG,N)
0089   //! using eigen vectors
0090   Standard_EXPORT void BasePlan (const gp_Vec& N);
0091
0092   //! Defines the average plane.
0093   //! if NOption = 1 : the average plane is the inertial plane.
0094   //! if NOption = 2 : the average plane is the plane of max. flux.
0095   Standard_EXPORT gp_Vec DefPlan (const Standard_Integer NOption);
0096
0097
0098   Handle(TColgp_HArray1OfPnt) myPts;
0099   Standard_Real myUmax;
0100   Standard_Real myVmax;
0101   Standard_Real myVmin;
0102   Standard_Real myUmin;
0103   Handle(Geom_Plane) myPlane;
0104   Standard_Real myTol;
0105   Handle(Geom_Line) myLine;
0106   gp_Vec myOX;
0107   gp_Vec myOY;
0108   gp_Pnt myG;
0109   Standard_Integer myNbBoundPoints;
0110
0111
0112 };
0113
0114
0115
0116
0117
0118
0119
0120 #endif // _GeomPlate_BuildAveragePlane_HeaderFile