DefaultObjectMarker.cc 4.96 KB
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/*===========================================================================*\
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*                                                                            *
*                              OpenFlipper                                   *
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 *           Copyright (c) 2001-2015, RWTH-Aachen University                 *
 *           Department of Computer Graphics and Multimedia                  *
 *                          All rights reserved.                             *
 *                            www.openflipper.org                            *
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 *---------------------------------------------------------------------------*
 * This file is part of OpenFlipper.                                         *
 *---------------------------------------------------------------------------*
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 * Redistribution and use in source and binary forms, with or without        *
 * modification, are permitted provided that the following conditions        *
 * are met:                                                                  *
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 * 1. Redistributions of source code must retain the above copyright notice, *
 *    this list of conditions and the following disclaimer.                  *
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 * 2. Redistributions in binary form must reproduce the above copyright      *
 *    notice, this list of conditions and the following disclaimer in the    *
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 * 3. Neither the name of the copyright holder nor the names of its          *
 *    contributors may be used to endorse or promote products derived from   *
 *    this software without specific prior written permission.               *
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS       *
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\*===========================================================================*/

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

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

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const ACG::Vec4f base_color (0.6f,0.6f,0.6f,1.0f);
const ACG::Vec4f source_color (0.6f,0.6f,1.0f,1.0f);
const ACG::Vec4f target_color (1.0f,1.0f,1.0f,1.0f);
const ACG::Vec4f source_target_color (0.6f,1.0f,1.0f,1.0f);
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//******************************************************************************

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bool DefaultObjectMarker::stencilRefForObject(BaseObjectData * _obj, GLuint & _reference)
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{
  if (!_obj->target() && !_obj->source())
  {
    _reference = 1;
    return true;
  }
  else if (!_obj->target() && _obj->source())
  {
    _reference = 2;
    return true;
  }
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  else if (_obj->target() && !_obj->source())
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  {
    _reference = 3;
    return true;
  }
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  else if (_obj->target() && _obj->source())
  {
    _reference = 4;
    return true;
  }
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  return false;
}

bool DefaultObjectMarker::blendForStencilRefNumber(GLuint _reference, GLenum & _src, GLenum & _dst, ACG::Vec4f & _color)
{
  _src = GL_ZERO;
  _dst = GL_SRC_COLOR;

  switch (_reference)
  {
    case 1:
      _color = base_color;
      return true;
    case 2:
      _color = source_color;
      return true;
    case 3:
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      _color = target_color;
      return true;
    case 4:
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      _color = source_target_color;
      return true;
    default:
      return false;
  }
  return false;
}