gls_rso_wrapper.h

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

  \par Copyright Information

  Copyright (c) 2017 by The DiSTI Corporation.<br>
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Derivative Works based on this or other copyrighted DiSTI Software.

  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,
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*/
#ifndef _GLS_RSO_WRAPPER_H
#define _GLS_RSO_WRAPPER_H

#include "component_base.h"

#ifdef GLES
#    include "rso_interface_es_1.h"
typedef disti::RSOInterfaceES1 RsoImplBaseInterface;
#else
#    include "rso_interface_1.h"
typedef disti::RSOInterface1 RsoImplBaseInterface;
#endif

namespace disti
{
//class RsoImplBaseInterface;
//class RsoImplBaseInterface::DisplayEvent;
class AttributeWrapperMap;
class EmittedEventHandlerImpl;
class MouseEvent;

/** The GlsRSOWrapper class wraps an RsoImplBaseInterface object
    so that it can be inserted into the GL Studio heirarchy.
  */
class GlsRSOWrapper : public ComponentBase
{
public:
    typedef ComponentBase _BaseClass;

    /** Constructor
      * \param rso The RSO to wrap 
      * \param RSOVersion the highest RSOInterface the RSO supports (e.g. 1,2,3)
      */
    GLS_EXPORT GlsRSOWrapper( RsoImplBaseInterface* rso, unsigned int RSOVersion );

    /** Call CreateInstance() and Destroy() instead of new and delete 
      * in a mixed-library environment to ensure that matching 
      * new and delete operators are called. 
      * \param rso The RSO to wrap 
      * \param RSOVersion the highest RSOInterface the RSO supports (e.g. 1,2,3)
      */
    static GLS_EXPORT GlsRSOWrapper* CreateInstance( RsoImplBaseInterface* rso, unsigned int RSOVersion );

    /** Destructor
      * Don't call "delete yourComponent;", instead call "yourComponent->Destroy();" 
      * to ensure that the object is deleted correctly.
      */
    virtual GLS_EXPORT ~GlsRSOWrapper();

    /** Utility Method: Users should call Destroy() instead.
      * Safely delete an object that was created using CreateInstance.
      */
    virtual GLS_EXPORT void DeleteInstance();

    /** Replace the RSO that the GlsRSOWrapper is wrapping.
      * \param rso The new RSO to use
      * \param deleteCurrent Whether to delete the currently referenced rso. If false, then the caller is responsible for deleting it.
      */
    GLS_EXPORT void ChangeRSO( RsoImplBaseInterface* rso, bool deleteCurrent = true );

    /** Returns the current RSOInterface object
      */
    GLS_EXPORT RsoImplBaseInterface* RSOInterface();

    /** Returns the rso version
    */
    unsigned int GetRSOVersion() const
    {
        return _rsoVersion;
    }

    /** Handle an event that was emitted from the RSO.
      */
    GLS_EXPORT int HandleEmittedEvent( RsoImplBaseInterface::Event* ev );

    /** Returns the qualified instance name of the initiator of the last
      * event that was passed to HandleEmittedEvent or "" if no events 
      * have been passed to HandleEmittedEvent. */
    GLS_EXPORT const char* LastEmittedEventInitiatorName() const;

    // DisplayObject overrides

    virtual GLS_EXPORT void AlphaMode( int mode );
    virtual GLS_EXPORT int  AlphaMode( void );
    virtual GLS_EXPORT void AntiAlias( bool alias );
    virtual GLS_EXPORT bool AntiAlias( void );
    virtual GLS_EXPORT void SetBlendColor( const GlsColor& color );
    virtual GLS_EXPORT GlsColor GetBlendColor();
    virtual GLS_EXPORT GlsColor GetColor();
    virtual GLS_EXPORT void     SetColor( const GlsColor& color );
    virtual GLS_EXPORT void     CullBackFace( const bool val );
    virtual GLS_EXPORT bool     CullBackFace( void );
    virtual GLS_EXPORT int      DepthTest( void );
    virtual GLS_EXPORT void     DepthTest( int zbuf );
    virtual GLS_EXPORT bool     LightingEnabled();
    virtual GLS_EXPORT void     LightingEnabled( bool lighting );
    virtual GLS_EXPORT int      LineStippleMultiplier( void );
    virtual GLS_EXPORT void     LineStippleMultiplier( int mult );
    virtual GLS_EXPORT int      LineStipplePattern( void );
    virtual GLS_EXPORT void     LineStipplePattern( int pattern );
    virtual GLS_EXPORT float    LineWidth( void );
    virtual GLS_EXPORT void     LineWidth( float width );
    virtual GLS_EXPORT int      MaterialIndex();
    virtual GLS_EXPORT void     MaterialIndex( unsigned int index );
    virtual GLS_EXPORT int      PolygonMode( void );
    virtual GLS_EXPORT void     PolygonMode( int mode );
    virtual GLS_EXPORT int      PolygonEnd( void );
    virtual GLS_EXPORT void     PolygonEnd( const int end );
    virtual GLS_EXPORT int      PolygonOffset( void ) const;
    virtual GLS_EXPORT void     PolygonOffset( const int offset );
    virtual GLS_EXPORT int      Shading( void );
    virtual GLS_EXPORT void     Shading( const int shading );
    virtual GLS_EXPORT int      TextureIndex( void );
    virtual GLS_EXPORT void     TextureIndex( int textureIndex );
    virtual GLS_EXPORT bool     TextureRepeat( void );
    virtual GLS_EXPORT void     TextureRepeat( const int rep );
    virtual GLS_EXPORT int      TextureMappingTechnique( void );
    virtual GLS_EXPORT void     TextureMappingTechnique( const int map );
    virtual GLS_EXPORT int      TextureMagnificationFilter( void );
    virtual GLS_EXPORT void     TextureMagnificationFilter( const int filter );
    virtual GLS_EXPORT int      TextureMinificationFilter( void );
    virtual GLS_EXPORT void     TextureMinificationFilter( const int filter );

    virtual GLS_EXPORT void AbsolutePlacement( bool filter );

    virtual GLS_EXPORT void Calculate( double time );

    virtual GLS_EXPORT void CalculateBoundingBox( void );

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

    virtual GLS_EXPORT void CopyGeometry( DisplayObject* src );

    virtual GLS_EXPORT void CopyProperties( DisplayObject* src );

#ifndef GLES
    virtual GLS_EXPORT InterfaceListType* GetCppInterfaceDescription( InterfaceListType* addToThisList = NULL );

    virtual GLS_EXPORT void GetCppInterfaceDescriptionFree( InterfaceListType* array );
#endif
    virtual GLS_EXPORT void CreateObjects();

    virtual GLS_EXPORT void Draw();

    virtual GLS_EXPORT void GetExtents( float& x, float& y, float& z, float& x1, float& y1, float& z1 );

    virtual GLS_EXPORT void GetTransformedExtents( Vector& min, Vector& max, const GlsMatrixType& matrix, bool resetMinMax = true );

    virtual GLS_EXPORT DisplayObject* handle( DisplayEvent* ev );

    virtual GLS_EXPORT DisplayObject* HandleInput( DisplayEvent* ev );

    virtual GLS_EXPORT void Init();

    virtual GLS_EXPORT void Initialize();

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

    virtual GLS_EXPORT void PreDraw( const OpenGLMatrices& current, Culler& culler );

    virtual GLS_EXPORT void GetResources( std::ostream& outstr, GlsResourceFilter* filter = NULL );

    virtual GLS_EXPORT DistiAttributeBase& Resource( const char* name );

    /* Unhides base class implementation. */
    using ComponentBase::Rotate;
    using ComponentBase::Scale;

    virtual void GLS_EXPORT UpdateBoundingVolume( void );

    /** Called on initial creation to set variables */
    GLS_EXPORT void SetValue( int spec, va_list& args );

protected:
    /** enum that guides the state machine for multitouch handling for RSO's that don't support multitouch.  
      * An RSO starts in the READY_FOR_INPUT state.  When it handles a mouse drag event, it moves to PROCESSING_MOUSE_DRAG
      * state.  It will ignore any other mouse events if they are not for the original cursor_id.  Then, once the RSO either receives the 
      * MOUSE_UP event or stops handling the MOUSE_DRAG events, the RSO then transitions to WAITING_FOR_MOUSE_DOWN (i.e. it keeps ignoring other cursors
      * that might have been dragging on it while it was processing its original cursor event).  Once it receives a new mouse down, it transitions back to READY_FOR_INPUT
      */
    enum MultitouchState
    {
        READY_FOR_INPUT,
        PROCESSING_MOUSE_DRAG,
        WAITING_FOR_MOUSE_DOWN
    };

    RsoImplBaseInterface*    _rsoInterface;
    AttributeWrapperMap*     _attributeWrapperMap;
    EmittedEventHandlerImpl* _rsoEmittedEventHandler;
    char*                    _lastEmittedEventInitiatorName;
    MultitouchState          _multitouchState;
    unsigned int             _currentCursor;
    unsigned int             _rsoVersion;

    GLS_EXPORT void LastEmittedEventInitiatorName( const char* name );

    /** this function should be called to handle mouse events if the RSO handles multitouch (RSO version 3 or greater) 
      */
    virtual GLS_EXPORT DisplayObject* HandleMultiTouchInput( MouseEvent* mev );
};

} // namespace disti

#endif