include/opencascade/ShapeBuild_Vertex.hxx

0001 // Created on: 1998-06-11
0002 // Created by: data exchange team
0003 // Copyright (c) 1998-1999 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 _ShapeBuild_Vertex_HeaderFile
0018 #define _ShapeBuild_Vertex_HeaderFile
0019
0020 #include <Standard.hxx>
0021 #include <Standard_DefineAlloc.hxx>
0022
0023 class TopoDS_Vertex;
0024 class gp_Pnt;
0025
0026
0027 //! Provides low-level functions used for constructing vertices
0028 class ShapeBuild_Vertex
0029 {
0030 public:
0031
0032   DEFINE_STANDARD_ALLOC
0033
0034
0035   //! Combines new vertex from two others. This new one is the
0036   //! smallest vertex which comprises both of the source vertices.
0037   //! The function takes into account the positions and tolerances
0038   //! of the source vertices.
0039   //! The tolerance of the new vertex will be equal to the minimal
0040   //! tolerance that is required to comprise source vertices
0041   //! multiplied by tolFactor (in order to avoid errors because
0042   //! of discreteness of calculations).
0043   Standard_EXPORT TopoDS_Vertex CombineVertex (const TopoDS_Vertex& V1, const TopoDS_Vertex& V2, const Standard_Real tolFactor = 1.0001) const;
0044
0045   //! The same function as above, except that it accepts two points
0046   //! and two tolerances instead of vertices
0047   Standard_EXPORT TopoDS_Vertex CombineVertex (const gp_Pnt& pnt1, const gp_Pnt& pnt2, const Standard_Real tol1, const Standard_Real tol2, const Standard_Real tolFactor = 1.0001) const;
0048
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0052 protected:
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0058 private:
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0064 };
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0072 #endif // _ShapeBuild_Vertex_HeaderFile