GeneratedCubeMapTexture.h

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//    Copyright 2004, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    H3D API 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 General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __COMPOSEDCUBEMAPTEXTURE_H__
#define __COMPOSEDCUBEMAPTEXTURE_H__

#include "X3DEnvironmentTextureNode.h"
#include "Viewpoint.h"
#include "X3DTexture2DNode.h"
#include "DependentNodeFields.h"
#include <list>
#include "SFInt32.h"

namespace H3D {

  class H3DAPI_API GeneratedCubeMapTexture : public X3DEnvironmentTextureNode {
  public:
    GeneratedCubeMapTexture( Inst< DisplayList > _displayList = 0,
                             Inst< SFNode      > _metadata   = 0,
                             Inst< SFString    > _update     = 0,
                             Inst< SFInt32     > _size       = 0 );

    ~GeneratedCubeMapTexture();

    virtual void enableTexturing();

    virtual void disableTexturing();

    virtual void render();

    virtual void preRender() {
      X3DEnvironmentTextureNode::preRender();
      if( generating_textures ) {
        glPushAttrib( GL_COLOR_BUFFER_BIT );
        glEnable( GL_ALPHA_TEST );
        glAlphaFunc( GL_NEVER, 0 );
      }
    }

    virtual void postRender() {
      X3DEnvironmentTextureNode::postRender();
      if( generating_textures ) {
        glPopAttrib();
      }
    }
    
    virtual void initializeTextures();

    virtual void updateCubeMapTextures( X3DChildNode *n,
                                        Viewpoint *vp );

#ifdef USE_HAPTICS
    virtual void traverseSG( TraverseInfo &ti );
#endif

    static void updateAllCubeMapTextures( X3DChildNode *n,
                                          Viewpoint *vp );

    auto_ptr< SFString > update;

    auto_ptr< SFInt32 > size;

    static H3DNodeDatabase database;

  protected:
    bool textures_initialized;
    
    bool generating_textures;

    virtual void updateCubeMap( GLuint texture_target,
                                const Vec3f & camera_position,
                                const Vec3f & camera_dir,
                                const Vec3f & camera_up,
                                X3DChildNode *n,
                                Viewpoint *vp );

    Matrix4f local_to_global;

    static list< GeneratedCubeMapTexture * > instances;
  };
}

#endif

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