// DAsampDlg.cpp : implementation file
//

#include "stdafx.h"
#include "DAsamp.h"
#include "DAsampDlg.h"
#include "DetectDialog.h"
#include <process.h>
#include <math.h>

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

UINT process(LPVOID pParam);


int round_int (double x)
{

const float round_to_nearest = 0.5f;
int i;
__asm
{
fld x
fadd st, st (0)
fadd round_to_nearest
fistp i
sar i, 1
}
return (i);
}



/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CDAsampDlg dialog

CDAsampDlg::CDAsampDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CDAsampDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CDAsampDlg)
	m_log = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	DetectDialog dDialog;
	
	if(dDialog.DoModal() != IDOK)
	{
		exit(0);
	}
	DeviceIndex = dDialog.index;
	DeviceIndex = 7 - DeviceIndex;
	killthread = true;

}

void CDAsampDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CDAsampDlg)
	DDX_Text(pDX, IDC_EDIT_LOG, m_log);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CDAsampDlg, CDialog)
	//{{AFX_MSG_MAP(CDAsampDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON_START, OnButtonStart)
	ON_BN_CLICKED(IDC_BUTTON_STOP, OnButtonStop)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CDAsampDlg message handlers

BOOL CDAsampDlg::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 CDAsampDlg::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 CDAsampDlg::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 CDAsampDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CDAsampDlg::OnButtonStart() 
{
	// TODO: Add your control notification handler code here
	double ClockHz;
	long ErrorCode;
	char temp[16];

	Rot = 0;
	ClockHz = 40000;
	m_log = "Opening...";
	UpdateData(false);
	Invalidate();
	ErrorCode = DACOutputOpen(DeviceIndex, &ClockHz);
	if (ErrorCode == ERROR_SUCCESS)
	{
		m_log += "\r\nOpened for output at\r\n ";
		itoa(int(ClockHz), temp, 10);
		m_log += temp;
		m_log += " Hz.";
		UpdateData(false);
		Invalidate();
		killthread = false;
		myThread = AfxBeginThread(process, this); 
	}
	else
	{
		m_log = "Unable to open card";
		UpdateData(false);
		Invalidate();
	}

}

UINT process(LPVOID pParam)
{
	CDAsampDlg *dlg;
	unsigned long ErrorCode;
	int I;
	double EC, ES;
	bool BGotDACData;
	double magicNum;

	dlg = (CDAsampDlg*) pParam;

	while(!dlg->killthread) 
	{
		if(!BGotDACData)
		{
			dlg->Rot += .0004;
			if (dlg->Rot > FullCircle)
			{
				dlg->Rot = dlg->Rot - FullCircle;
			}

			for (I = 0; I <= 7; I++)
			{
				magicNum = dlg->Rot + I * (2.0/7.0) * FullCircle;
				EC = cos(magicNum);
				ES = sin(magicNum);
				dlg->DACData[I].X = round_int(2048 + ES * 2047);
				dlg->DACData[I].Y = round_int(2048 + EC * 2047);
				dlg->DACData[I].R = dlg->DACData[I].G = 0;
				dlg->DACData[I].B = 0xfff;

			}

			BGotDACData = true;
		}
		ErrorCode = DACOutputFrame(dlg->DeviceIndex, sizeof(dlg->DACData) / sizeof(TDACPoint), &(dlg->DACData[0].X));
		if (ErrorCode == ERROR_SUCCESS)
		{
			BGotDACData = false;
		}
		else if (ErrorCode == ERROR_NOT_READY)
		{

		}
		else
		{
			return -1;
		}

	}

	return 0;
}

void CDAsampDlg::OnButtonStop() 
{
	// TODO: Add your control notification handler code here
	HANDLE threadHandle =myThread -> m_hThread;
	DWORD result;

	killthread = true; //let the thread know it is time to stop.

	do
	{
		Sleep(20); //give the other thread a chance to close
		GetExitCodeThread(threadHandle, &result);
	}while (result == STILL_ACTIVE);


	m_log += "\r\nClosing...";
	UpdateData(false);
	Invalidate();
	DACOutputClose(DeviceIndex, 1); //the one is a "true" value
	m_log +="\r\nClosed.";
	UpdateData(false);
	Invalidate();

	
}