gls_lod_group.h

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

  \par Copyright Information

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*/

#ifndef _GlsLodGroup_H
#define _GlsLodGroup_H

#include <vector>

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