StatusNodesBase.cc

/*===========================================================================*\
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\*===========================================================================*/
#include <ACG/GL/acg_glew.hh>
#include "StatusNodesT.hh"

//== INCLUDES =================================================================

//== NAMESPACES ===============================================================

namespace ACG {
namespace SceneGraph {


//== IMPLEMENTATION ==========================================================

StatusNodesBase::StatusNodesBase() : heVBO_(0),
    eIBO_(0),
    fIBO_(0),
    vIBO_(0),
    pIBO_(0)
{

}

void StatusNodesBase::createHEVBO()
{
  if(!heVBO_)
  {
    glGenBuffers(1, &heVBO_);
  }
}


void StatusNodesBase::createIBO(GLuint& _name)
{
  if(!_name)
  {
    glGenBuffers(1, &_name);
  }
}

StatusNodesBase::~StatusNodesBase()
{
  if(heVBO_)
    glDeleteBuffers(1,&heVBO_);
  if(eIBO_)
    glDeleteBuffers(1,&eIBO_);
  if(fIBO_)
    glDeleteBuffers(1,&fIBO_);
  if(vIBO_)
    glDeleteBuffers(1,&vIBO_);
  if(pIBO_)
    glDeleteBuffers(1,&pIBO_);
}

void StatusNodesBase::bindHEVBO()
{
  glGetIntegerv(GL_ARRAY_BUFFER_BINDING,&prevBuffer);
  if(!heVBO_)
    createHEVBO();
  glBindBuffer(GL_ARRAY_BUFFER, heVBO_);
}

void StatusNodesBase::bindIBO(GLuint& _name)
{
  glGetIntegerv(GL_ELEMENT_ARRAY_BUFFER_BINDING,&prevBuffer);
  if(!_name)
    createIBO(_name);
  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _name);
}

void StatusNodesBase::unbindHEVBO()
{
  glBindBuffer(GL_ARRAY_BUFFER, prevBuffer);
}

void StatusNodesBase::unbindIBO()
{
  glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, prevBuffer);
}

void StatusNodesBase::updateHEVBOPoints(size_t numberOfElements_, size_t sizeOfElements_, void* data_)
{
  bindHEVBO();
  glBufferData(GL_ARRAY_BUFFER,numberOfElements_ * sizeOfElements_, data_, GL_STATIC_DRAW);
  unbindHEVBO();
}

void StatusNodesBase::updateIBOData(GLuint& bufferName_, size_t numberOfElements_, size_t sizeOfElements_, void* data_)
{
  bindIBO(bufferName_);
  glBufferData(GL_ELEMENT_ARRAY_BUFFER,numberOfElements_ * sizeOfElements_, data_, GL_STATIC_DRAW);
  unbindIBO();
}
//=============================================================================
} // namespace SceneGraph
} // namespace ACG
//=============================================================================