SelectionObjectMarker.cc 4.63 KB
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/*===========================================================================*\
*                                                                            *
*                              OpenFlipper                                   *
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 *           Copyright (c) 2001-2015, RWTH-Aachen University                 *
 *           Department of Computer Graphics and Multimedia                  *
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 *                            www.openflipper.org                            *
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 * This file is part of OpenFlipper.                                         *
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*                                                                            *
\*===========================================================================*/

/*===========================================================================*\
*                                                                            *
*   $Revision$                                                       *
*   $LastChangedBy$                                                *
*   $Date$                     *
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\*===========================================================================*/
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#include <OpenFlipper/common/Types.hh>
#include "SelectionObjectMarker.hh"

//******************************************************************************

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const ACG::Vec4f disabled_color (0.4f,0.4f,0.4f,1.f);
const ACG::Vec4f selected_color (0.f,1.f,0.f,0.5f);
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//******************************************************************************

bool SelectionObjectMarker::stencilRefForObject(BaseObjectData * _obj, GLuint & _reference)
{
  if (_obj->flag("vsi_objectId_disabled"))
  {
    _reference = 1;
    return true;
  }
  else if (_obj->flag("vsi_objectId_selected"))
  {
    _reference = 2;
    return true;
  }

  return false;
}

bool SelectionObjectMarker::blendForStencilRefNumber(GLuint _reference, GLenum & _src, GLenum & _dst, ACG::Vec4f & _color)
{
  switch (_reference)
  {
    case 1:
      _src = GL_ZERO;
      _dst = GL_SRC_COLOR;
      _color = disabled_color;
      return true;
    case 2:
      _src = GL_SRC_ALPHA;
      _dst = GL_ONE_MINUS_SRC_ALPHA;
      _color = selected_color;
      return true;
    default:
      return false;
  }
  return false;
}