createfilterdlg.cpp

数字信号处理作业

// CreatefilterDlg.cpp : implementation file
//

#include "stdafx.h"
#include "Createfilter.h"
#include "CreatefilterDlg.h"
#include "math.h"
#include "PaintDlg.h"
#include "LenDlg.h"
#include "ParaDlg.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

#define  PI 3.1416
/////////////////////////////////////////////////////////////////////////////
// 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()

/////////////////////////////////////////////////////////////////////////////
// CCreatefilterDlg dialog

CCreatefilterDlg::CCreatefilterDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CCreatefilterDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CCreatefilterDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	m_xCount = 32;
	m_hCount = 32;
	m_yCount = 32;
	m_dftCount = 50;
	m_fftCount = 0;
	M = 0;
	hreal = NULL;
	himag = NULL;
	yreal = NULL;
	yimag = NULL;
	xreal = NULL;
	ximag = NULL;
	yFFTReal = NULL;
	yFFTImag = NULL;
	yFFTAbs = NULL;
	yFFTArg = NULL;
	m_bInput = FALSE;
}

void CCreatefilterDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CCreatefilterDlg)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCreatefilterDlg, CDialog)
	//{{AFX_MSG_MAP(CCreatefilterDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_TYPE1, OnType1)
	ON_BN_CLICKED(IDC_TYPE2, OnType2)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCreatefilterDlg message handlers

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


//横截型
void CCreatefilterDlg::OnType1() 
{
	// TODO: Add your control notification handler code here
	CreateHengjie();
	ShowClineDlg(1);
}
//级联型
void CCreatefilterDlg::OnType2() 
{
	// TODO: Add your control notification handler code here
	CreateJilian();
	ShowClineDlg(2);
}

void CCreatefilterDlg::ClearPoint()
{
	// 为什么系统会崩溃？
	if (xreal != NULL)
	{
		delete []xreal;
	}
	if (ximag != NULL)
	{
		delete []ximag;
	}
	if (hreal != NULL)
	{
		delete []hreal;
	}
	if (himag != NULL)
	{
		delete []himag;
	}
	if (yreal != NULL)
	{
		delete []yreal;
	}
	if (yimag != NULL)
	{
		delete []yimag;
	}
	if (yFFTReal != NULL)
	{
		delete []yFFTReal;
	}
	if (yFFTImag != NULL)
	{
		delete []yFFTImag;
	}
	if (yFFTAbs != NULL)
	{
		delete []yFFTAbs;
	}
	if (yFFTArg != NULL)
	{
		delete []yFFTArg;
	}
}


void CCreatefilterDlg::PostNcDestroy() 
{
	// TODO: Add your specialized code here and/or call the base class
	ClearPoint();
	CDialog::PostNcDestroy();
}

float CCreatefilterDlg::Deta(int n)
{
	if (n == 0)
	{
		return 1.0;
	}
	else
		return 0.0;
}

void CCreatefilterDlg::CreateH()
{
	if (hreal != NULL)
	{
		delete []hreal;
		hreal = NULL;
	}
	if (himag != NULL)
	{
		delete []himag;
		himag = NULL;
	}
	m_hCount = 32;
	hreal = new float[m_hCount];
	himag = new float[m_hCount];
	memset(hreal, 0, sizeof(float)*m_hCount);
	memset(himag, 0 ,sizeof(float)*m_hCount);
	int i;
	for (i=0; i<m_hCount; i++)
	{
		hreal[i] = 0.01*Deta(i) + 0.5*Deta(i-1) + 0.5*Deta(i-2) + 0.01*Deta(i-3);
	}
}

void CCreatefilterDlg::CreateX()
{
	if (ximag != NULL)
	{
		delete []ximag;
		ximag = NULL;
	}
	if (xreal != NULL)
	{
		delete []xreal;
		xreal = NULL;
	}
	m_xCount = 32;
	xreal = new float[m_xCount];
	ximag = new float[m_xCount];
	memset(xreal, 0, sizeof(float)*m_xCount);
	memset(ximag, 0 ,sizeof(float)*m_xCount);
	xreal [0] = 1.0;
}

void CCreatefilterDlg::CreateY()
{
	if (yimag != NULL)
	{
		delete []yimag;
		yimag = NULL;
	}
	if (yreal != NULL)
	{
		delete []yreal;
		yreal = NULL;
	}
	m_yCount = 32;
	yreal = new float[m_yCount];
	yimag = new float[m_yCount];
	memset(yreal, 0, sizeof(float)*m_yCount);
	memset(yimag, 0 ,sizeof(float)*m_yCount);
	int n;
	int i;
	for (n=0; n<m_yCount; n++)
	{
		for (i=0; i<m_yCount; i++)
		{
			if (n-i < 0 )
			{
				continue;
			}
			yreal[n] += hreal[i] * xreal[n-i];
		}
	}
}



// 生成模值
// 入口参数：数组名和长度
// Xabs:     存储模值的数组名，相当与返回值
// Xreal:    存储实部的数组名
// Ximag:    存储虚部的数组名
// n:	     数组的长度
void CCreatefilterDlg::CreateAbs(float *&Xabs, float *Xreal, float *Ximag, int n)
{
	if (Xabs != NULL)
	{
		delete []Xabs;
		Xabs = NULL;
	}
	Xabs = new float[n];
	memset(Xabs, 0, sizeof(float) * n);
	int i;
	for(i=0; i<n; i++)
	{
		Xabs[i] = sqrt(Xreal[i]*Xreal[i] + Ximag[i]*Ximag[i]);
	}
}

// 生成角度
// 入口参数：数组名和长度
// Xarg:     存储角度的数组名，相当与返回值
// Xreal:    存储实部的数组名
// Ximag:    存储虚部的数组名
// n:	     数组的长度
void CCreatefilterDlg::CreateArg(float *&Xarg, float *Xreal, float *Ximag, int n)
{
	if (Xarg != NULL)
	{
		delete []Xarg;
		Xarg = NULL;
	}
	Xarg = new float [n];
	memset(Xarg, 0, sizeof(float)*n);
	int i;
	for(i=0; i<n; i++)
	{
		Xarg[i] = atan2(Ximag[i],Xreal[i]);
	}
}