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sglTexGen.hpp

/*****************************************************************************
 * SGL: A Scene Graph Library
 *
 * Copyright (C) 1997-2001  Scott McMillan   All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *****************************************************************************
 *     File: sglTexGen.hpp
 *  Created: 2 May 1999
 *  Summary: create, modify, and query texture coordinate generator
 *****************************************************************************/

#ifndef __SGL_TEXGEN_HPP
#define __SGL_TEXGEN_HPP

#include <sgl.h>
#include <sglStatelet.hpp>
#include <sglVector.hpp>

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

class SGL_DLL_API sglTexGen : public sglTexturingStatelet
{
public:
   enum TexCoordEnum
   {
      eS = GL_S,

      eT = GL_T,

      eR = GL_R,

      eQ = GL_Q
   };

   enum ModeEnum
   {
      eOFF = -1,

      eOBJECT_LINEAR = GL_OBJECT_LINEAR,

      eEYE_LINEAR = GL_EYE_LINEAR,

      eSPHERE_MAP = GL_SPHERE_MAP,

      eREFLECTION_MAP = GL_REFLECTION_MAP_ARB,

      eNORMAL_MAP = GL_NORMAL_MAP_ARB
   };

public:
   sglTexGen();

   virtual ~sglTexGen();

   void setMode(TexCoordEnum coord, ModeEnum mode);

   ModeEnum getMode(TexCoordEnum coord) const;

   void setPlane(TexCoordEnum coord,
                 float x, float y, float z, float w);

   void getPlane(TexCoordEnum coord,
                 float &x, float &y, float &z, float &w) const;

   // See sglTexturingStatelet::applyToUnit() for details.
   void applyToUnit(sglCurrState*, unsigned int) const;

   // See sglStatelet::getSorted() for details.
   virtual bool getSorted() const { return true; }

   // See sglObject::printInfo() for details.
   virtual void printInfo(ostream &ostrm, const char *indent_string) const;

private:
   sglTexGen(const sglTexGen &); // not implemented
   sglTexGen &operator=(const sglTexGen &); // not implemented

   void setIndex();

private:
   ModeEnum m_mode[4];
   sglVec4f m_plane[4];
};

#endif

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