PinchGesture.h

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

#pragma once

#include "AndroidInput.h"

namespace Eegeo
{
    namespace Android
    {
        namespace Input
        {
            class PinchGesture
            {
            private:
                IAndroidInputHandler* pHandler;
                bool pinching;
                float previousDistance;
                float majorScreenDimension;

                bool UpdatePinching(bool pinching, const TouchInputEvent& event, float& pinchScale, int numTouches, bool pointerUp);

            public:
                PinchGesture(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);
            };
        }
    }
}