include/opencascade/OpenGl_LineAttributes.hxx

0001 // Created on: 2011-09-20
0002 // Created by: Sergey ZERCHANINOV
0003 // Copyright (c) 2011-2014 OPEN CASCADE SAS
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 OpenGl_LineAttributes_HeaderFile
0017 #define OpenGl_LineAttributes_HeaderFile
0018
0019 #include <OpenGl_Resource.hxx>
0020
0021 #include <Graphic3d_HatchStyle.hxx>
0022 #include <NCollection_DataMap.hxx>
0023
0024 class OpenGl_Context;
0025
0026 //! Utility class to manage OpenGL resources of polygon hatching styles.
0027 //! @note the implementation is not supported by Core Profile and by ES version.
0028 class OpenGl_LineAttributes : public OpenGl_Resource
0029 {
0030   DEFINE_STANDARD_RTTIEXT(OpenGl_LineAttributes, OpenGl_Resource)
0031 public:
0032   //! Default constructor.
0033   Standard_EXPORT OpenGl_LineAttributes();
0034
0035   //! Default destructor.
0036   Standard_EXPORT ~OpenGl_LineAttributes() override;
0037
0038   //! Release GL resources.
0039   Standard_EXPORT void Release(OpenGl_Context* theGlCtx) override;
0040
0041   //! Returns estimated GPU memory usage - not implemented.
0042   size_t EstimatedDataSize() const override { return 0; }
0043
0044   //! Sets type of the hatch.
0045   Standard_EXPORT bool SetTypeOfHatch(const OpenGl_Context*                    theGlCtx,
0046                                       const occ::handle<Graphic3d_HatchStyle>& theStyle);
0047
0048 private:
0049   unsigned int init(const OpenGl_Context*                    theGlCtx,
0050                     const occ::handle<Graphic3d_HatchStyle>& theStyle);
0051
0052 protected:
0053   NCollection_DataMap<occ::handle<Graphic3d_HatchStyle>, unsigned int> myStyles; //!< Hatch patterns
0054 };
0055
0056 #endif // _OpenGl_LineAttributes_Header