include/opencascade/BRepMesh_SphereRangeSplitter.hxx

0001 // Created on: 2016-07-07
0002 // Copyright (c) 2016 OPEN CASCADE SAS
0003 // Created by: Oleg AGASHIN
0004 //
0005 // This file is part of Open CASCADE Technology software library.
0006 //
0007 // This library is free software; you can redistribute it and/or modify it under
0008 // the terms of the GNU Lesser General Public License version 2.1 as published
0009 // by the Free Software Foundation, with special exception defined in the file
0010 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
0011 // distribution for complete text of the license and disclaimer of any warranty.
0012 //
0013 // Alternatively, this file may be used under the terms of Open CASCADE
0014 // commercial license or contractual agreement.
0015
0016 #ifndef _BRepMesh_SphereRangeSplitter_HeaderFile
0017 #define _BRepMesh_SphereRangeSplitter_HeaderFile
0018
0019 #include <BRepMesh_DefaultRangeSplitter.hxx>
0020 #include <IMeshTools_Parameters.hxx>
0021
0022 //! Auxiliary class extending default range splitter in
0023 //! order to generate internal nodes for spherical surface.
0024 class BRepMesh_SphereRangeSplitter : public BRepMesh_DefaultRangeSplitter
0025 {
0026 public:
0027
0028   //! Constructor.
0029   BRepMesh_SphereRangeSplitter()
0030   {
0031   }
0032
0033   //! Destructor.
0034   virtual ~BRepMesh_SphereRangeSplitter()
0035   {
0036   }
0037
0038   //! Returns list of nodes generated using surface data and specified parameters.
0039   Standard_EXPORT virtual Handle(IMeshData::ListOfPnt2d) GenerateSurfaceNodes(
0040     const IMeshTools_Parameters& theParameters) const Standard_OVERRIDE;
0041
0042 private:
0043
0044   //! Computes step for the given range.
0045   void computeStep(
0046     const std::pair<Standard_Real, Standard_Real>& theRange,
0047     const Standard_Real                            theDefaultStep,
0048     std::pair<Standard_Real, Standard_Real>&       theStepAndOffset) const
0049   {
0050     const Standard_Real aDiff = theRange.second - theRange.first;
0051     theStepAndOffset.first  = aDiff / ((Standard_Integer) (aDiff / theDefaultStep) + 1);
0052     theStepAndOffset.second = theRange.second - Precision::PConfusion();
0053   }
0054 };
0055
0056 #endif