gls_linear_float_controller.h

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/*! \file
 \brief Implementation of GlsLinearFloatController.
 
 \par Copyright Information
 
 Copyright (c) 2017 by The DiSTI Corporation.<br>
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 <br>
 All rights reserved.<br>
 
 This Software contains proprietary trade secrets of DiSTI and may not be
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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,
 AND ANY USE OF THIS SOFTWARE PRODUCT IS AT YOUR OWN RISK. TO THE MAXIMUM EXTENT
 PERMITTED BY APPLICABLE LAW, DISTI AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES
 AND CONDITIONS, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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 PARTICULAR PURPOSE, TITLE, AND NON-INFRINGEMENT, WITH REGARD TO THE SOFTWARE.
 
 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_LINEAR_FLOAT_CONTROLLER_H_INCLUDED
#define GLS_LINEAR_FLOAT_CONTROLLER_H_INCLUDED

#include "display.h"
#include "gls_cpp_lang_support.h"

//////////////////// Provides support for creating DLLs ////////////////////////
#if( defined( GLSGEN_EXPORT_GLSADVANCEDMESH ) || defined( GLSGEN_IMPORT_GLSADVANCEDMESH ) || defined( GLS_EXPORT_GENERATED ) || defined( GLS_IMPORT_GENERATED ) ) \
    && defined( _MSC_VER )
#    if defined( GLSGEN_EXPORT_GLSADVANCEDMESH ) || defined( GLS_EXPORT_GENERATED )
#        define GLSGEN_GlsLinearFloatController_EXPORT __declspec( dllexport )
#    else
#        define GLSGEN_GlsLinearFloatController_EXPORT __declspec( dllimport )
#    endif
#else
#    define GLSGEN_GlsLinearFloatController_EXPORT
#endif
///////////////////////////////////////////////////////////////////////////////

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

namespace disti
{
// IFloatController allows working with all float controllers
// through a common interface
class IFloatController
{
public:
    /** Destructor */
    virtual ~IFloatController() {}

    /** Get the output value for a given input
      * \returns The output value for the given input */
    virtual float GetOutputForInput( float input ) = 0;

    /** The caller may use this method to determine the valid input range for the animation
     * Note: Some controllers may always return -FLT_MAX
     * \returns The first input value in the animation */
    virtual float GetFirstInputValue() = 0;

    /** The caller may use this method to determine the valid input range for the animation
     * Note: Some controllers may always return FLT_MAX
     * \returns The last input value in the animation */
    virtual float GetLastInputValue() = 0;
};

class GlsLinearFloatController : public DisplayObject
    , public IFloatController
{
    friend class GlsLinearFloatControllerEditor;

private:
    GlsLinearFloatController& operator=( const GlsLinearFloatController& );
    GlsLinearFloatController( const GlsLinearFloatController& );

public:
    DISTI_DEPRECATED( "This identifier is forbidden by the C++ standard. Use BaseClass instead." )
    typedef DisplayObject _BaseClass;
    typedef DisplayObject BaseClass;

    /** Create a new GlsLinearFloatController
      * \param generateInstanceName  Whether or not to generate an instance name */
    GLSGEN_GlsLinearFloatController_EXPORT GlsLinearFloatController( bool generateInstanceName = false );
    GLSGEN_GlsLinearFloatController_EXPORT GlsLinearFloatController( const GlsLinearFloatController& that, const bool generateNames );

    virtual GLSGEN_GlsLinearFloatController_EXPORT ~GlsLinearFloatController();

    static GLSGEN_GlsLinearFloatController_EXPORT DisplayObject* CreateInstance();

    // DisplayObject methods

    virtual GLSGEN_GlsLinearFloatController_EXPORT void SetAvailableAttributes( unsigned int value );

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

    virtual GLSGEN_GlsLinearFloatController_EXPORT void CopyProperties( DisplayObject* src );

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

    virtual GLSGEN_GlsLinearFloatController_EXPORT void PreDraw( const OpenGLMatrices& parentMatrices, Culler& culler );
    virtual GLSGEN_GlsLinearFloatController_EXPORT void Draw( void );

    virtual GLSGEN_GlsLinearFloatController_EXPORT DisplayObject* handle( DisplayEvent* ev );

    virtual GLSGEN_GlsLinearFloatController_EXPORT bool Hit( float x, float y, float z, float scale, const Vector& directionVector, Vector* collisionPoint );

    // IFloatController methods

    virtual GLSGEN_GlsLinearFloatController_EXPORT float GetOutputForInput( float input );

    virtual GLSGEN_GlsLinearFloatController_EXPORT float GetFirstInputValue();

    virtual GLSGEN_GlsLinearFloatController_EXPORT float GetLastInputValue();

    // GlsLinearFloatController methods

    class KeyData
    {
        float _input;
        float _output;

    public:
        KeyData()
            : _input( 0 )
            , _output( 0 )
        {}

        inline void  SetInputValue( float value ) { _input = value; }
        inline float GetInputValue() const { return _input; }

        inline void  SetOutputValue( float value ) { _output = value; }
        inline float GetOutputValue() const { return _output; }
    };

    typedef DynamicArray<KeyData> KeyArrayType;

    // Returns the KeyArray associated with this object.  Use this array to modify the keys that make up the animation.
    inline KeyArrayType& KeyArray() { return _keyArray; }

    // Iterates through the path segments and returns the first one found
    // that contains the given value.
    // \param value The value to search for
    // \param index1 returns the index of the state at the start of the segment or -1 if no segments are found
    // \param index2 returns the index of the state at the end the segment or -1 if no segments are found
    // Special cases:
    //     value is before start of the path: index1 == index2 == 0
    //     value is past the end of the path: index1 == index2 == (KeyArray().Count()-1)
    GLSGEN_GlsLinearFloatController_EXPORT void FindFirstPathSegmentContainingValue( float value, int* index1, int* index2 );

    // Initialize the key array
    // Used by code generator
    // \param numKeys The number of keys
    // \param keyPairArray array of numKey*2 values that are used to initialize the keys
    GLSGEN_GlsLinearFloatController_EXPORT void InitializeKeys( unsigned int numKeys, const float* keyPairArray );

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

protected:
    KeyArrayType _keyArray;
};

GLSGEN_GlsLinearFloatController_EXPORT std::ostream& operator<<( std::ostream& outstr, const GlsLinearFloatController::KeyData& key );
GLSGEN_GlsLinearFloatController_EXPORT std::istream& operator>>( std::istream& instr, GlsLinearFloatController::KeyData& key );

} // namespace disti

#endif