gzCuller.h

Go to the documentation of this file.

//*****************************************************************************
// File         : gzCuller.h
// Module       : 
// Description  : Class definition of the gzCuller utility class
// Author       : Anders Modén      
// Product      : Gizmo3D 2.1.1
//      
// Copyright © 2003- Saab Training Systems AB, Sweden   
//          
// NOTE:    Gizmo3D is a high performance 3D Scene Graph and effect visualisation 
//          C++ toolkit for Linux, Mac OS X, Windows (Win32) and IRIX® for  
//          usage in Game or VisSim development.
//
//
// Revision History...                          
//                                  
// Who  Date    Description                     
//                                  
// AMO  991222  Created file    
//
//******************************************************************************
#ifndef __GZ_CULLER_H__
#define __GZ_CULLER_H__

#include "gzMatrix.h"
#include "gzGroup.h"



//******************************************************************************
// Class    : gzCuller
//                                  
// Purpose  : Base Interface for culling and occlusion testing in scene graph
//                                  
// Notes    : Only used internally  
//                                  
// Revision History...                          
//                                  
// Who  Date    Description                     
//                                  
// AMO  991222  Created 
//                                  
//******************************************************************************
class gzCuller : public gzReference
{
public:

    GZ_GRAPH_EXPORT gzCuller(){};

    GZ_GRAPH_EXPORT virtual ~gzCuller(){};

    GZ_GRAPH_EXPORT virtual gzBool isVisible( const gzVec3 &pos , const gzReal &rad , gzNode *node)=0;

    // ---------- Clone interface ---------------------------------------
    GZ_GRAPH_EXPORT virtual gzReference* clone() const=0;


};

//******************************************************************************
// Class    : gzConeCuller
//                                  
// Purpose  : Base Interface for culling and occlusion testing in scene graph
//                                  
// Notes    : Only used internally  
//                                  
// Revision History...                          
//                                  
// Who  Date    Description                     
//                                  
// AMO  991222  Created 
//                                  
//******************************************************************************
class gzConeCuller : public gzCuller
{
public:

    GZ_GRAPH_EXPORT gzConeCuller(gzNode *node , gzMatrix4 & transform , gzReal & maxscale);

    GZ_GRAPH_EXPORT virtual ~gzConeCuller(){};

    GZ_GRAPH_EXPORT virtual gzBool isVisible( const gzVec3 &pos , const gzReal &rad , gzNode *node);

    // ---------- Clone interface ---------------------------------------
    GZ_GRAPH_EXPORT virtual gzReference* clone() const;

private:

    gzVec3  m_pos;
    gzReal  m_rad;
    gzReal  m_length;
    gzReal  m_alpha;
};


//******************************************************************************
// Class    : gzViewPlaneCuller
//                                  
// Purpose  : Culls children when loceated on a certian side of a view plane
//                                  
// Notes    :   
//                                  
// Revision History...                          
//                                  
// Who  Date    Description                     
//                                  
// AMO  030718  Created 
//                                  
//******************************************************************************
class gzViewPlaneCuller : public gzGroup
{
public:

    GZ_GRAPH_EXPORT gzViewPlaneCuller(const gzString & name=GZ_EMPTY_STRING);

    GZ_GRAPH_EXPORT virtual ~gzViewPlaneCuller(){};

    GZ_DECLARE_TYPE_INTERFACE_EXPORT(GZ_GRAPH_EXPORT);  // typed interface

    // ---------- Clone interface ---------------------------------------
    GZ_GRAPH_EXPORT virtual gzReference* clone() const;

    // ---------- Action Interface --------------------------------------

    GZ_GRAPH_EXPORT virtual gzBool  isTraversable( gzTraverseAction *action , gzNode *node , gzULong index , gzContext *context );

    // ---------- gzConeCuller ----------------------------------

    GZ_GRAPH_EXPORT gzVoid setViewPlane(const gzVec3 &position, const gzVec3 & cullDirection);

private:

    gzVec3  m_cullPosition;

    gzVec3  m_cullDirection;

};



#endif

---