headsortailsdlg.cpp

A Mersenne Twister Class

// HeadsOrTailsDlg.cpp : implementation file
//

#include "stdafx.h"
#include "HeadsOrTails.h"
#include "HeadsOrTailsDlg.h"
#include "Random.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

class CAboutDlg : public CDialog
{
public:
	CAboutDlg();

// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA

	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL

// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
	//{{AFX_MSG_MAP(CAboutDlg)
		// No message handlers
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHeadsOrTailsDlg dialog

CHeadsOrTailsDlg::CHeadsOrTailsDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CHeadsOrTailsDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CHeadsOrTailsDlg)
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CHeadsOrTailsDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CHeadsOrTailsDlg)
	DDX_Control(pDX, IDC_R_MS, m_eRms);
	DDX_Control(pDX, IDC_M_MS, m_eMms);
	DDX_Control(pDX, IDC_TAILSCOUNT2, m_randtailcount);
	DDX_Control(pDX, IDC_HEADSCOUNT2, m_randheadcount);
	DDX_Control(pDX, IDC_TAILS2, m_randTails);
	DDX_Control(pDX, IDC_HEADS2, m_randHeads);
	DDX_Control(pDX, IDC_TAILSCOUNT, m_MTtailcount);
	DDX_Control(pDX, IDC_HEADSCOUNT, m_MTheadcount);
	DDX_Control(pDX, IDC_TAILS, m_MTTails);
	DDX_Control(pDX, IDC_HEADS, m_MTHeads);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CHeadsOrTailsDlg, CDialog)
	//{{AFX_MSG_MAP(CHeadsOrTailsDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_FLIPCOINS, OnFlipcoins)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CHeadsOrTailsDlg message handlers

BOOL CHeadsOrTailsDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Add "About..." menu item to system menu.

	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);

	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CHeadsOrTailsDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CHeadsOrTailsDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CHeadsOrTailsDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}



/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

	My stupid yet effective example of using the CRandomMT class.

	Here we are flipping a coin 5000 times and displaying the results with
	the common progress control.  Statistically speaking there should be 
	very little variance in the results.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
*/
const int FLIPS = 100000;
void CHeadsOrTailsDlg::OnFlipcoins() 
{
	FlipMersenne();

	FlipRand();
}	





void CHeadsOrTailsDlg::FlipMersenne()
{
	int heads = 0;
	int tails = 0;
	CRandomMT MTrand(GetTickCount());

	m_MTHeads.SetRange32(0,FLIPS);
	m_MTHeads.SetPos(0);
	m_MTHeads.SetStep(1);
	
	m_MTTails.SetRange32(0,FLIPS);
	m_MTTails.SetPos(0);
	m_MTTails.SetStep(1);
	
	m_MTheadcount.SetWindowText("0");
	m_MTtailcount.SetWindowText("0");

	for(int flip = 0; flip < FLIPS; flip++)
	{
		int val = (MTrand.HeadsOrTails());
		if( val == 1)
		{
			heads++;
		}
		else
		{
			tails++;
		}
	}

	CString tmp;
	m_MTHeads.SetPos(heads);
	tmp.Format("%d",heads);
	m_MTheadcount.SetWindowText(tmp);

	m_MTTails.SetPos(tails);
	tmp.Format("%d",tails);
	m_MTtailcount.SetWindowText(tmp);
}

void CHeadsOrTailsDlg::FlipRand()
{
	
	int heads = 0;
	int tails = 0;
	m_randHeads.SetRange32(0,FLIPS);
	m_randHeads.SetPos(0);
	m_randHeads.SetStep(1);

	m_randTails.SetRange32(0,FLIPS);
	m_randTails.SetPos(0);
	m_randTails.SetStep(1);

	
	m_randheadcount.SetWindowText("0");
	m_randtailcount.SetWindowText("0");
	
	srand(GetTickCount());
	for(int flip = 0; flip < FLIPS; flip++)
	{
		int val = (rand() % 2);
		if( val == 1)
		{
			heads++;
		}
		else
		{
			tails++;
		}
	}

	CString tmp;
	m_randHeads.SetPos(heads);
	tmp.Format("%d",heads);
	m_randheadcount.SetWindowText(tmp);

	m_randTails.SetPos(tails);
	tmp.Format("%d",tails);
	m_randtailcount.SetWindowText(tmp);
}