include/opencascade/IntAna_IntQuadQuad.hxx

0001 // Created on: 1991-05-15
0002 // Created by: Isabelle GRIGNON
0003 // Copyright (c) 1991-1999 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 _IntAna_IntQuadQuad_HeaderFile
0018 #define _IntAna_IntQuadQuad_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022
0023 #include <IntAna_Curve.hxx>
0024 #include <Standard_Integer.hxx>
0025 #include <gp_Pnt.hxx>
0026 class gp_Cylinder;
0027 class IntAna_Quadric;
0028 class gp_Cone;
0029
0030
0031 //! This class provides the analytic intersection between a
0032 //! cylinder or a cone from gp and another quadric, as defined
0033 //! in the class Quadric from IntAna.
0034 //! This algorithm is used when the geometric intersection
0035 //! (class QuadQuadGeo from IntAna) returns no geometric
0036 //! solution.
0037 //! The result of the intersection may be
0038 //! - Curves as defined in the class Curve from IntAna
0039 //! - Points (Pnt from gp)
0040 class IntAna_IntQuadQuad
0041 {
0042 public:
0043
0044   DEFINE_STANDARD_ALLOC
0045
0046
0047   //! Empty Constructor
0048   Standard_EXPORT IntAna_IntQuadQuad();
0049
0050   //! Creates the intersection between a cylinder and a quadric .
0051   //! Tol est a definir plus precisemment.
0052   Standard_EXPORT IntAna_IntQuadQuad(const gp_Cylinder& C, const IntAna_Quadric& Q, const Standard_Real Tol);
0053
0054   //! Creates the intersection between a cone and a quadric.
0055   //! Tol est a definir plus precisemment.
0056   Standard_EXPORT IntAna_IntQuadQuad(const gp_Cone& C, const IntAna_Quadric& Q, const Standard_Real Tol);
0057
0058   //! Intersects a cylinder and a quadric .
0059   //! Tol est a definir plus precisemment.
0060   Standard_EXPORT void Perform (const gp_Cylinder& C, const IntAna_Quadric& Q, const Standard_Real Tol);
0061
0062   //! Intersects a cone and a quadric.
0063   //! Tol est a definir plus precisemment.
0064   Standard_EXPORT void Perform (const gp_Cone& C, const IntAna_Quadric& Q, const Standard_Real Tol);
0065
0066   //! Returns True if the computation was successful.
0067     Standard_Boolean IsDone() const;
0068
0069   //! Returns TRUE if the cylinder, the cone or the sphere
0070   //! is identical to the quadric.
0071     Standard_Boolean IdenticalElements() const;
0072
0073   //! Returns the number of curves solution.
0074     Standard_Integer NbCurve() const;
0075
0076   //! Returns the curve of range N.
0077   Standard_EXPORT const IntAna_Curve& Curve (const Standard_Integer N) const;
0078
0079   //! Returns the number of contact point.
0080     Standard_Integer NbPnt() const;
0081
0082   //! Returns the point of range N.
0083   Standard_EXPORT const gp_Pnt& Point (const Standard_Integer N) const;
0084
0085   //! Returns the parameters on the "explicit quadric"
0086   //! (i.e  the cylinder or the  cone, the first argument given to the constructor) of the point of range N.
0087   Standard_EXPORT void Parameters (const Standard_Integer N, Standard_Real& U1, Standard_Real& U2) const;
0088
0089   //! Returns True if the Curve I  shares its last bound
0090   //! with another curve.
0091   Standard_EXPORT Standard_Boolean HasNextCurve (const Standard_Integer I) const;
0092
0093   //! If  HasNextCurve(I)  returns True,  this  function
0094   //! returns  the  Index J  of the curve  which   has a
0095   //! common bound  with the curve   I.  If  theOpposite ==
0096   //! True , then the last parameter of the curve I, and
0097   //! the last parameter of  the curve J  give  the same
0098   //! point. Else the last  parameter of the curve I and
0099   //! the first parameter  of  the curve J are  the same
0100   //! point.
0101   Standard_EXPORT Standard_Integer NextCurve (const Standard_Integer I, Standard_Boolean& theOpposite) const;
0102
0103   //! Returns True if the Curve I shares its first bound
0104   //! with another curve.
0105   Standard_EXPORT Standard_Boolean HasPreviousCurve (const Standard_Integer I) const;
0106
0107   //! if HasPreviousCurve(I) returns True, this function
0108   //! returns the   Index  J of the   curve  which has a
0109   //! common  bound with the  curve  I.  If theOpposite  ==
0110   //! True  , then the  first parameter of  the curve I,
0111   //! and the first parameter of the curve  J  give  the
0112   //! same point. Else the first  parameter of the curve
0113   //! I and the last  parameter  of the curve J  are the
0114   //! same point.
0115   Standard_EXPORT Standard_Integer PreviousCurve (const Standard_Integer I, Standard_Boolean& theOpposite) const;
0116
0117 protected:
0118
0119   //! Set the next and previous fields. Private method.
0120   Standard_EXPORT void InternalSetNextAndPrevious();
0121
0122 protected:
0123
0124   Standard_Boolean done;
0125   Standard_Boolean identical;
0126   IntAna_Curve TheCurve[12];
0127   Standard_Integer previouscurve[12];
0128   Standard_Integer nextcurve[12];
0129   Standard_Integer NbCurves;
0130   Standard_Integer Nbpoints;
0131   gp_Pnt Thepoints[2];
0132   Standard_Integer myNbMaxCurves;
0133   Standard_Real myEpsilon;
0134   Standard_Real myEpsilonCoeffPolyNull;
0135
0136 };
0137
0138 #include <IntAna_IntQuadQuad.lxx>
0139
0140 #endif // _IntAna_IntQuadQuad_HeaderFile