OCCT

// Created on: 2011-10-25
// Created by: Sergey ZERCHANINOV
// Copyright (c) 2011-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#include <OpenGl_GlCore11.hxx>

#include <OpenGl_LineAttributes.hxx>
#include <OpenGl_Context.hxx>

IMPLEMENT_STANDARD_RTTIEXT(OpenGl_LineAttributes, OpenGl_Resource)

//=================================================================================================

OpenGl_LineAttributes::OpenGl_LineAttributes() = default;

//=================================================================================================

OpenGl_LineAttributes::~OpenGl_LineAttributes()
{
  Release(nullptr);
}

//=================================================================================================

void OpenGl_LineAttributes::Release(OpenGl_Context* theGlCtx)
{
  if (theGlCtx != nullptr && theGlCtx->IsValid())
  {
    for (NCollection_DataMap<occ::handle<Graphic3d_HatchStyle>, unsigned int>::Iterator anIter(
           myStyles);
         anIter.More();
         anIter.Next())
    {
      theGlCtx->core11ffp->glDeleteLists((GLuint)anIter.Value(), 1);
    }
  }
  myStyles.Clear();
}

//=================================================================================================

unsigned int OpenGl_LineAttributes::init(const OpenGl_Context*                    theGlCtx,
                                         const occ::handle<Graphic3d_HatchStyle>& theStyle)
{
  const unsigned int aListId = theGlCtx->core11ffp->glGenLists(1);
  theGlCtx->core11ffp->glNewList((GLuint)aListId, GL_COMPILE);
  theGlCtx->core11ffp->glPolygonStipple((const GLubyte*)theStyle->Pattern());
  theGlCtx->core11ffp->glEndList();
  return aListId;
}

//=================================================================================================

bool OpenGl_LineAttributes::SetTypeOfHatch(const OpenGl_Context*                    theGlCtx,
                                           const occ::handle<Graphic3d_HatchStyle>& theStyle)
{
  if (theStyle.IsNull() || theStyle->HatchType() == Aspect_HS_SOLID
      || theGlCtx->core11ffp == nullptr)
  {
    return false;
  }

  unsigned int aGpuListId = 0;
  if (!myStyles.Find(theStyle, aGpuListId))
  {
    aGpuListId = init(theGlCtx, theStyle);
    myStyles.Bind(theStyle, aGpuListId);
  }

  theGlCtx->core11ffp->glCallList((GLuint)aGpuListId);
  return true;
}