gls_mutex_group.h

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/*! \file
  \brief  The disti::GlsMutexGroup 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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  LIMITATION OF LIABILITY. TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE LAW,
IN NO EVENT SHALL DISTI OR ITS SUPPLIERS BE LIABLE FOR ANY SPECIAL, INCIDENTAL,
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*/

#ifndef _GLS_MUTEX_GROUP_H
#define _GLS_MUTEX_GROUP_H

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

//////////////////// Provides support for creating DLLs ////////////////////////
#if (defined(GLSGEN_EXPORT_GLSMUTEXGROUP) || \
     defined(GLSGEN_IMPORT_GLSMUTEXGROUP) || \
     defined(GLS_EXPORT_GENERATED) || \
     defined(GLS_IMPORT_GENERATED)) \
     && defined(_MSC_VER) 
#  if defined(GLSGEN_EXPORT_GLSMUTEXGROUP) || defined(GLS_EXPORT_GENERATED)
#    define GLSGEN_GLSMUTEXGROUP_EXPORT __declspec(dllexport)
#  else
#    define GLSGEN_GLSMUTEXGROUP_EXPORT __declspec(dllimport)
#  endif
#else
#  define GLSGEN_GLSMUTEXGROUP_EXPORT
#endif
///////////////////////////////////////////////////////////////////////////////

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

namespace disti
{

// These are specific to GlsMutexGroup
static AttributeName MetaMutexState("MutexState");
static AttributeName MetaState("State");
static AttributeName MetaCalculateInvisibleStates("CalculateInvisibleStates");
static AttributeName MetaPickInvisibleStates("PickInvisibleStates");
static AttributeName MetaPredrawInvisibleStates("PreDrawInvisibleStates");
static AttributeName MetaInputDeviceBehavior("InputDeviceBehavior");

// SetValue enumerations
enum {
    GLS_MUTEX_GROUP_STATE = GLS_LAST_INITIALIZER+1,
    GLS_MUTEX_GROUP_CALC_INVISIBLE_STATES,
    GLS_MUTEX_GROUP_PICK_INVISIBLE_STATES,
    GLS_MUTEX_GROUP_PREDRAW_INVISIBLE_STATES,
    GLS_MUTEX_GROUP_INPUT_DEVICE_BEHAVIOR
};

#ifdef GLES
class GlsGloFileAttribute;
#endif

/** Runtime implementation of a GlsMutexGroup */
class GlsMutexGroup : public Group
{
private:
    GlsMutexGroup& operator=( const GlsMutexGroup& ) DISTI_SPECIAL_MEM_FUN_DELETE;
    GlsMutexGroup( const GlsMutexGroup& ) DISTI_SPECIAL_MEM_FUN_DELETE;

public:   

    friend class GlsMutexGroupEditor;
    typedef Group _BaseClass;

    /** Create a new GlsMutexGroup.
      * \param generateInstance  Whether or not to generate an instance name
      * for this mutex group */
    GLSGEN_GLSMUTEXGROUP_EXPORT GlsMutexGroup(bool generateInstance=false);

    GLSGEN_GLSMUTEXGROUP_EXPORT GlsMutexGroup( const GlsMutexGroup& that, const bool generateNames );

    /** Destructs a GlsMutexGroup object */
    virtual GLSGEN_GLSMUTEXGROUP_EXPORT ~GlsMutexGroup();

    static GLSGEN_GLSMUTEXGROUP_EXPORT DisplayObject* CreateInstance();

    virtual GLSGEN_GLSMUTEXGROUP_EXPORT void SetAvailableAttributes(unsigned int value);

    virtual GLSGEN_GLSMUTEXGROUP_EXPORT DisplayObject* CloneObject(bool generateNames = false);

    virtual GLSGEN_GLSMUTEXGROUP_EXPORT void CopyProperties(DisplayObject *src);

#ifndef GLES
    virtual GLSGEN_GLSMUTEXGROUP_EXPORT InterfaceListType* GetCppInterfaceDescription(InterfaceListType* addToThisList= NULL );
    virtual GLSGEN_GLSMUTEXGROUP_EXPORT void GetCppInterfaceDescriptionFree(InterfaceListType* array);
#endif

    virtual GLSGEN_GLSMUTEXGROUP_EXPORT void Calculate(double time);
    virtual GLSGEN_GLSMUTEXGROUP_EXPORT void PreDraw(const OpenGLMatrices& parentMatrices,Culler &culler);
    virtual GLSGEN_GLSMUTEXGROUP_EXPORT void Draw(void);

    virtual GLSGEN_GLSMUTEXGROUP_EXPORT DisplayObject* Pick3D(const Vector& winLoc, 
                                                              const Vector& logicalCoords, 
                                                              float scale,
                                                              const Vector& directionVector,
                                                              Vector& collisionWinLoc /*Returned*/,
                                                              const OpenGLMatrices& drawnMatrices);

    virtual GLSGEN_GLSMUTEXGROUP_EXPORT void SetValue(int spec,va_list &args);

    //////////////////////////////////////////////////
    // GlsMutexGroup specific operations
    //////////////////////////////////////////////////

    /** \return The mutex state of this group, -1 = none */
    GLSGEN_GLSMUTEXGROUP_EXPORT int MutexState(void) { return _state; }

    /** Sets the mutex state of this group, -1 = none
      * \param state The new mutex state
      */
    GLSGEN_GLSMUTEXGROUP_EXPORT void MutexState(int state);

    // For legacy InputDevices
    /** \return The InputDevice state of this group, 1 to N */
    GLSGEN_GLSMUTEXGROUP_EXPORT int State(void) { return _state; }

    // For legacy InputDevices
    /** Sets the InputDevice state of this group, 1 to N.
      * \param state The new InputDevice state
      */
    GLSGEN_GLSMUTEXGROUP_EXPORT void State(int state);

    /** \return The calculate option of this group, true = calculate all objects, false = calculate active object only */
    GLSGEN_GLSMUTEXGROUP_EXPORT bool CalculateInvisibleStates(void) { return _calculateInvisibleStates; }

    /** Sets the calculate option of this group
      * \param value The new calculate option, true = calculate all objects, false = calculate active object only
      */
    GLSGEN_GLSMUTEXGROUP_EXPORT void CalculateInvisibleStates(bool value);

    /** \return The picking option of this group, true = pick all objects, false = pick active object only */
    GLSGEN_GLSMUTEXGROUP_EXPORT bool PickInvisibleStates(void) { return _pickInvisibleStates; }

    /** Sets the picking option of this group
      * \param value The new picking option, true = pick all objects, false = pick active object only
      */
    GLSGEN_GLSMUTEXGROUP_EXPORT void PickInvisibleStates(bool value);

    /** \return The predraw option of this group, true = predraw all objects, false = predraw active object only */
    GLSGEN_GLSMUTEXGROUP_EXPORT bool PreDrawInvisibleStates(void) { return _predrawInvisibleStates; }

    /** Sets the predraw option of this group
      * \param value The new predraw option, true = predraw all objects, false = predraw active object only
      */
    GLSGEN_GLSMUTEXGROUP_EXPORT void PreDrawInvisibleStates(bool value);

    /** \return Simulate the legacy InputDevice behavior, where state 0 is always shown and the state is one-based. */
    GLSGEN_GLSMUTEXGROUP_EXPORT bool InputDeviceBehavior(void) { return _inputDevice; }

    /** Sets the simulation of legacy InputDevice behavior, where state 0 is always shown
      * \param value True = InputDevice, False = MutexGroup
      */
    GLSGEN_GLSMUTEXGROUP_EXPORT void InputDeviceBehavior(bool value);

protected:

    bool ValidMutexState(const int state) const
    {
        return (state >= 0 && state < (int)(_objects.Count()));
    }
    
    bool ValidInputDeviceState(const int state) const
    {
        // 0 is not a valid state
        return (state > 0 && state < (int)(_objects.Count()));
    }

    /** Helper routine for Pick3D */
    DisplayObject* Pick3DUtil(const Vector& winLoc, 
                              const Vector& logicalCoords, 
                              float scale,
                              const Vector& directionVector,
                              Vector& collisionWinLoc /*Returned*/,
                              const OpenGLMatrices& drawnMatrices);

#ifdef GLES
    /** Set a single attribute from the GLO file.
      * \param data The attribute to set and its associated data.
      */
    virtual GLSGEN_GLSMUTEXGROUP_EXPORT void SetFromGloData(GlsGloFileAttribute &data);
#endif
    
    bool _inputDevice; /*< True = InputDevice functionality (state 0 always showing)
                           False = MutexGroup functionality */

    int _state; /*< The index of the currently active object in the group, 0 to N, anything else = none */

    bool _calculateInvisibleStates; /*< Whether or not to call calculate on invisible states */
    bool _pickInvisibleStates;      /*< Whether or not to call pick on invisible states */
    bool _predrawInvisibleStates;   /*< Whether or not to call predraw on invisible states */
};

} // namespace disti

#endif