PanGesture.h

// Copyright eeGeo Ltd (2012-2014), All Rights Reserved

#pragma once

#include "AppInterface.h"
#include "VectorMath.h"
#include "AndroidInput.h"
#include <vector>

namespace Eegeo
{
    namespace Android
    {
        namespace Input
        {
            class PanGesture
            {
            private:
                IAndroidInputHandler* pHandler;
                bool panning;
                std::vector<Eegeo::v2> inputs;
                Eegeo::v2 panCenter;
                Eegeo::v2 panAnchor;
                float majorScreenDimension;

                Eegeo::v2 GetTouchExtents(const TouchInputEvent& event) const;
                void PopulatePanData(int numTouches, const v2& touchExtents, AppInterface::PanData& out_panData) const;

            public:
                PanGesture(IAndroidInputHandler* pHandler, const float screenWidth, const float screenHeight);

                void PointerDown(const TouchInputEvent& event);
                void PointerUp(const TouchInputEvent& event);
                void PointerMove(const TouchInputEvent& event);

                void SetScreenDimensions(float screenWidth, float screenHeight);
            };
        }
    }
}