ColorPicker.h

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#pragma once

#include "GUI_item.h"

#  ifdef GUI_LIBRARY
#    define GUI_EXPORT   __declspec(dllexport)
#  else
#    define GUI_EXPORT   __declspec(dllimport)
#endif



namespace APGUI 
{


class GUI_EXPORT ColorPicker: public GUI_Item
{
    public:
        ColorPicker();
        ~ColorPicker();

        bool initialize(XERCES_CPP_NAMESPACE_QUALIFIER DOMNode *parametersNode);

        bool createVisuals();

        void pointed(bool pointed) { }


        bool processAction( const int sensorNumber, const GUI_ACTION action, const bool pressed);

        void setState(GUI_ITEM_STATE newState);

        void update(void);
        
        
        

    protected:      

        bool _isActive;
        
        bool _alwaysInMiddle;

        //visuals
        float _pickerHeight, _pickerRadius, spheresRadius;
        osg::Geode* osgGeode;

        //handSphere
        float handSphereRadius;
        osg::ShapeDrawable* handShapeDraw;
        osg::Sphere* handShapeSphere;

        Interconnection* _temporaryInterconnection;

        int _icontoDeactivate;


        void createColorSphere(osg::Vec3* pos, float radius, osg::Vec4* colour);
        
        void evoke();
        void RGBtoHSL(osg::Vec4* p_source, osg::Vec3* target);
        void HSLtoPos(osg::Vec3* p_hsl, osg::Vec3* p_pos);
        void PostoHSL(osg::Vec3* p_pos, osg::Vec3* p_hsl);
        void HSLtoRGB(osg::Vec3* source, osg::Vec4* target);

        
        osg::Vec3 limitPosition( osg::Vec3 handPosition);
        bool linesIntersection(osg::Vec3* p_point1, osg::Vec3* p_orientation1, osg::Vec3* p_point2, osg::Vec3* p_orientation2, osg::Vec3* result);

        void revoke();


        //for direct evocation of color picker - by key, for example
        DECLARE_INPUT(Evoke, MessageBool);

        //evoke command from GUI (Icon, e.g.)
        DECLARE_INPUT(GUIItemClicked, MessageString);

        //direct selection of color - not used at all?
        DECLARE_INPUT(Select, MessageBool);

        // color picker activated by icon - when color is picked, color picker should set icon to default state
        DECLARE_INPUT(ExternalDeactivation, MessageObjectID);

        //request for color picker evocation - picked color will be send to given receiver
        DECLARE_REQUEST_INPUT(EvokeHSLColorPicker, MessageString, MessageBool);
        
        //selected colour
        DECLARE_OUTPUT(Colour, MessageVec4);

        //request for hand position - called repeatedly during update()
        DECLARE_REQUEST_OUTPUT(SensorPosition, MessageInt, MessageVec3);
        
        

};

}