Touch.h

//Copyright © 2014 SDXFramework
//[License]GNU Affero General Public License, version 3
//[Contact]http://sourceforge.jp/projects/dxframework/
#pragma once
#include <Multimedia/Key.h>
#include <Multimedia/Window.h>

namespace SDX
{
    class Touch
    {
        friend class Input;
    private:
        MONO_STATE(Touch)

        bool press = false;
        double xBuffer;
        double yBuffer;

        void Position(double X座標, double Y座標)
        {
            //event.tfinger.x等は0.0~1.0の範囲になるので、押した位置を画面の解像度に合わせて計算する
            const double aspA = Window::activeWindow->aspect;
            const double aspB = (double)Window::GetWidth() / Window::GetHeight();

            if (aspA == aspB)
            {
                xBuffer = int(X座標 * Window::GetWidth());
                yBuffer = int(Y座標 * Window::GetHeight());
            }
            else if (aspA > aspB){
                //横が余る
                double rate = aspA / aspB;
                double pos = (X座標 - (rate - 1) / rate / 2) * rate;
                xBuffer = int(pos * Window::GetWidth());
                yBuffer = int(Y座標 * Window::GetHeight());
            }
            else{
                //上が余る
                double rate = aspB / aspA;
                double pos = (Y座標 - (rate - 1) / rate / 2) * rate;
                xBuffer = int(X座標 * Window::GetWidth());
                yBuffer = int(pos * Window::GetHeight());
            }
        }

    public:
        double x = 0;
        double y = 0;

        double moveX = 0;
        double moveY = 0;

        bool on = false;
        bool off = false;
        bool hold = false;

        unsigned int  holdCount = 0;

        void Update()
        {
            on = (!hold && press);
            off = (hold && !press);

            hold = press;
            if (press)
            {
                ++holdCount;
            }
            else
            {
                holdCount = 0;
            }

            if (!on)
            {
                moveX = xBuffer - x;
                moveY = yBuffer - y;
            }
            else
            {
                moveX = 0;
                moveY = 0;
            }

            x = xBuffer;
            y = yBuffer;
        }

        void Reset()
        {
            x = 0;
            y = 0;

            moveX = 0;
            moveY = 0;

            press = false;

            on = false;
            off = false;
            hold = false;
            holdCount = 0;
        }

    };
}