1 // Created on: 2016-02-04 2 // Created by: Anastasia BORISOVA 3 // Copyright (c) 2016 OPEN CASCADE SAS 4 // 5 // This file is part of Open CASCADE Technology software library. 6 // 7 // This library is free software; you can redistribute it and/or modify it under 8 // the terms of the GNU Lesser General Public License version 2.1 as published 9 // by the Free Software Foundation, with special exception defined in the file 10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT 11 // distribution for complete text of the license and disclaimer of any warranty. 12 // 13 // Alternatively, this file may be used under the terms of Open CASCADE 14 // commercial license or contractual agreement. 15 16 #ifndef _Prs3d_ToolSphere_HeaderFile 17 #define _Prs3d_ToolSphere_HeaderFile 18 19 #include <Prs3d_ToolQuadric.hxx> 20 21 //! Standard presentation algorithm that outputs graphical primitives for spherical surface. 22 class Prs3d_ToolSphere : public Prs3d_ToolQuadric 23 { 24 public: 25 26 //! Generate primitives for 3D quadric surface. 27 //! @param theRadius [in] sphere radius 28 //! @param theNbSlices [in] number of slices within U parameter 29 //! @param theNbStacks [in] number of stacks within V parameter 30 //! @param theTrsf [in] optional transformation to apply 31 //! @return generated triangulation 32 Standard_EXPORT static Handle(Graphic3d_ArrayOfTriangles) Create (const Standard_Real theRadius, 33 const Standard_Integer theNbSlices, 34 const Standard_Integer theNbStacks, 35 const gp_Trsf& theTrsf); 36 public: 37 38 //! Initializes the algorithm creating a sphere. 39 //! @param theRadius [in] sphere radius 40 //! @param theNbSlices [in] number of slices within U parameter 41 //! @param theNbStacks [in] number of stacks within V parameter 42 Standard_EXPORT Prs3d_ToolSphere (const Standard_Real theRadius, 43 const Standard_Integer theNbSlices, 44 const Standard_Integer theNbStacks); 45 46 protected: 47 48 //! Computes vertex at given parameter location of the surface. 49 Standard_EXPORT virtual gp_Pnt Vertex (const Standard_Real theU, const Standard_Real theV) const Standard_OVERRIDE; 50 51 //! Computes normal at given parameter location of the surface. 52 Standard_EXPORT virtual gp_Dir Normal (const Standard_Real theU, const Standard_Real theV) const Standard_OVERRIDE; 53 54 protected: 55 56 Standard_Real myRadius; //!< sphere radius 57 58 }; 59 60 #endif 61