StencilRefNode.cc

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//=============================================================================
//
//  CLASS StencilRefNode - IMPLEMENTATION
//
//=============================================================================


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


#include "StencilRefNode.hh"


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


namespace ACG {
namespace SceneGraph {


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


StencilRefNode::StencilRefNode (BaseNode*          _parent,
                                const std::string& _name)
  : BaseNode(_parent, _name),
  reference_ (0)
{}

//----------------------------------------------------------------------------

StencilRefNode::StencilRefNode (BaseNode*          _parent,
                                BaseNode*          _child,
                                const std::string& _name)
  : BaseNode(_parent, _child, _name),
  reference_ (0)
{}

//----------------------------------------------------------------------------

void StencilRefNode::enter(GLState& /*_state*/, const DrawModes::DrawMode& /*_drawmode*/)
{
  if(visible()) {
    glPushAttrib (GL_STENCIL_BUFFER_BIT);
    glStencilFunc (GL_ALWAYS, reference_, ~0);
    glStencilOp (GL_KEEP, GL_KEEP, GL_REPLACE);
  }
}

//----------------------------------------------------------------------------

void StencilRefNode::leave(GLState& /*_state*/, const DrawModes::DrawMode& /*_drawmode*/)
{
  if(visible()) {
    glPopAttrib ();
  }
}

//----------------------------------------------------------------------------

void StencilRefNode::enterPick(GLState& /*_state*/ , PickTarget /*_target*/, const DrawModes::DrawMode& /*_drawMode*/ ) {

}

//----------------------------------------------------------------------------

void StencilRefNode::leavePick(GLState& /*_state*/, PickTarget /*_target*/, const DrawModes::DrawMode& /*_drawMode*/ ) {
}

void StencilRefNode::setReference(GLuint _ref)
{
  reference_ = _ref;
}

//=============================================================================
} // namespace SceneGraph
} // namespace ACG
//=============================================================================