gls_lod_group.h

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/*! \file
  \brief  The disti::GlsLodGroup class.

  \par Copyright Information

  Copyright (c) 2015 by The DiSTI Corporation.<br>
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  NO WARRANTY. THE SOFTWARE IS PROVIDED "AS-IS," WITHOUT WARRANTY OF ANY KIND,
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*/

#ifndef _GlsLodGroup_H
#define _GlsLodGroup_H

#include <vector>

#include "group.h"
#include "gls_cpp_lang_support.h"


//////////////////// Provides support for creating DLLs ////////////////////////
#if (defined(GLSGEN_EXPORT_GlsLodGroup) || \
     defined(GLSGEN_IMPORT_GlsLodGroup) || \
     defined(GLS_EXPORT_GENERATED) || \
     defined(GLS_IMPORT_GENERATED)) \
     && defined(_MSC_VER) 
#  if defined(GLSGEN_EXPORT_GlsLodGroup) || defined(GLS_EXPORT_GENERATED)
#    define GLSGEN_GlsLodGroup_EXPORT    __declspec(dllexport)
#  else
#    define GLSGEN_GlsLodGroup_EXPORT    __declspec(dllimport)
#  endif
#else
#  define GLSGEN_GlsLodGroup_EXPORT
#endif
///////////////////////////////////////////////////////////////////////////////

#define LIB_BASE_NAME "gls_lod_group"
#include "gls_auto_lib.h"
#undef LIB_BASE_NAME

namespace disti
{

// Forward Declaration
class GlsGloFileAttribute;

typedef enum
{
    GLS_LOD_GROUP_DISTANCE_RANGE = GLS_LAST_INITIALIZER + 1,
    GLS_LOD_GROUP_LOD_POSITIONS
} GLS_LodGroup_Initializers;

/** 
    Runtime implementation of a GlsLodGroup.  The GlsLodGroup is a group the is capable of 
    creating occlusion queries.
*/
class GlsLodGroup : public Group
{
public:   
    typedef Group _BaseClass;            
    
    friend class GlsLodGroupEditor;

    /** Create a new GlsLodGroup.
      * \param generateInstance  Whether or not to generate an instance name
      * for this inputdevice 
      */
    GLSGEN_GlsLodGroup_EXPORT GlsLodGroup(bool generateInstance=false);

    GLSGEN_GlsLodGroup_EXPORT GlsLodGroup( const GlsLodGroup& that, const bool generateNames );

    /** Destructs a GlsLodGroup object */
    virtual GLSGEN_GlsLodGroup_EXPORT ~GlsLodGroup();

    static GLSGEN_GlsLodGroup_EXPORT DisplayObject* CreateInstance();

    static GLSGEN_GlsLodGroup_EXPORT void GroupDebugCommand(const char * cmd, const char * arg);

    virtual GLSGEN_GlsLodGroup_EXPORT void SetAvailableAttributes(unsigned int value);      

    //////////////////////////////////////////////////
    // Overridden base class methods
    // The base class methods are overridden so that the Group Class methods
    // are not called, generally DisplayObject methods are called, there 
    // are a few exceptions.
    //////////////////////////////////////////////////
    
    virtual GLSGEN_GlsLodGroup_EXPORT void Draw(void);    
    virtual GLSGEN_GlsLodGroup_EXPORT void PreDraw( const OpenGLMatrices& parentMatrices, Culler &culler );    

    virtual GLSGEN_GlsLodGroup_EXPORT int NumLods();

    /** Adds the specified object into the group, at the end of the list
      * \param obj  A pointer to the object to add
      * \param reparent  Whether or not the object parent should be set to this group
      * \param recalculateBoundingbox  Whether or not to recalculate the bounding box
      * \param loc  Where to insert it (defaults to -1 which means at the end of the list)
      */
    virtual GLSGEN_GlsLodGroup_EXPORT void InsertObject(DisplayObject *obj,bool reparent=true,bool recalculateBoundingbox = true,int loc=-1);

    virtual GLSGEN_GlsLodGroup_EXPORT float GetLodPosition( int index );


protected:

    /* See base class */
    virtual GLSGEN_GlsLodGroup_EXPORT void SetValue(int spec, va_list &args);

#ifdef GLES
    /** Set a single attribute from the GLO file.
     * \param data The attribute to set and its associated data.
     */
    virtual GLSGEN_GlsLodGroup_EXPORT void SetFromGloData(GlsGloFileAttribute &data);
#endif
    //////////////////////////////////////////////////
    // GlsLodGroup specific operations
    //////////////////////////////////////////////////    

private:

    // Disable implicit generated Members
    GlsLodGroup& operator=( const GlsLodGroup &rhs );
    GlsLodGroup( const GlsLodGroup &src );      

    DynamicArray<float> _lodPositions;
    float _distanceRange;
    int _currentState;
    int _previewState;
    float _previewValue;
};

} // namespace disti

#endif