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File indexing completed on 2025-01-18 10:03:32
0001 // Created on: 1992-08-26 0002 // Created by: Remi GILET 0003 // Copyright (c) 1992-1999 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 _gce_MakeLin2d_HeaderFile 0018 #define _gce_MakeLin2d_HeaderFile 0019 0020 #include <Standard.hxx> 0021 #include <Standard_DefineAlloc.hxx> 0022 #include <Standard_Handle.hxx> 0023 0024 #include <gp_Lin2d.hxx> 0025 #include <gce_Root.hxx> 0026 class gp_Ax2d; 0027 class gp_Pnt2d; 0028 class gp_Dir2d; 0029 0030 0031 //! This class implements the following algorithms used 0032 //! to create Lin2d from gp. 0033 //! 0034 //! * Create a Lin2d parallel to another and passing 0035 //! through a point. 0036 //! * Create a Lin2d parallel to another at the distance 0037 //! Dist. 0038 //! * Create a Lin2d passing through 2 points. 0039 //! * Create a Lin2d from its axis (Ax1 from gp). 0040 //! * Create a Lin2d from a point and a direction. 0041 //! * Create a Lin2d from its equation. 0042 class gce_MakeLin2d : public gce_Root 0043 { 0044 public: 0045 0046 DEFINE_STANDARD_ALLOC 0047 0048 0049 //! Creates a line located with A. 0050 Standard_EXPORT gce_MakeLin2d(const gp_Ax2d& A); 0051 0052 0053 //! <P> is the location point (origin) of the line and 0054 //! <V> is the direction of the line. 0055 Standard_EXPORT gce_MakeLin2d(const gp_Pnt2d& P, const gp_Dir2d& V); 0056 0057 0058 //! Creates the line from the equation A*X + B*Y + C = 0.0 0059 //! the status is "NullAxis"if Sqrt(A*A + B*B) <= Resolution from gp. 0060 Standard_EXPORT gce_MakeLin2d(const Standard_Real A, const Standard_Real B, const Standard_Real C); 0061 0062 //! Make a Lin2d from gp <TheLin> parallel to another 0063 //! Lin2d <Lin> at a distance <Dist>. 0064 //! If Dist is greater than zero the result is on the 0065 //! right of the Line <Lin>, else the result is on the 0066 //! left of the Line <Lin>. 0067 Standard_EXPORT gce_MakeLin2d(const gp_Lin2d& Lin, const Standard_Real Dist); 0068 0069 //! Make a Lin2d from gp <TheLin> parallel to another 0070 //! Lin2d <Lin> and passing through a Pnt2d <Point>. 0071 Standard_EXPORT gce_MakeLin2d(const gp_Lin2d& Lin, const gp_Pnt2d& Point); 0072 0073 //! Make a Lin2d from gp <TheLin> passing through 2 0074 //! Pnt2d <P1>,<P2>. 0075 //! It returns false if <P1> and <P2> are confused. 0076 //! Warning 0077 //! If an error occurs (that is, when IsDone returns 0078 //! false), the Status function returns: 0079 //! - gce_NullAxis if Sqrt(A*A + B*B) is less 0080 //! than or equal to gp::Resolution(), or 0081 //! - gce_ConfusedPoints if points P1 and P2 are coincident. 0082 Standard_EXPORT gce_MakeLin2d(const gp_Pnt2d& P1, const gp_Pnt2d& P2); 0083 0084 //! Returns the constructed line. 0085 //! Exceptions StdFail_NotDone if no line is constructed. 0086 Standard_EXPORT gp_Lin2d Value() const; 0087 0088 Standard_EXPORT gp_Lin2d Operator() const; 0089 Standard_EXPORT operator gp_Lin2d() const; 0090 0091 0092 0093 0094 protected: 0095 0096 0097 0098 0099 0100 private: 0101 0102 0103 0104 gp_Lin2d TheLin2d; 0105 0106 0107 }; 0108 0109 0110 0111 0112 0113 0114 0115 #endif // _gce_MakeLin2d_HeaderFile
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