mdifftview.cpp

对简单的一维信号进行FFT核IFFT处理

// mdiFFTView.cpp : implementation of the CMdiFFTView class
//

#include "stdafx.h"
#include "mdiFFT.h"
#include<math.h>

#include "mdiFFTDoc.h"
#include "mdiFFTView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CMdiFFTView

IMPLEMENT_DYNCREATE(CMdiFFTView, CView)

BEGIN_MESSAGE_MAP(CMdiFFTView, CView)
	//{{AFX_MSG_MAP(CMdiFFTView)
		// NOTE - the ClassWizard will add and remove mapping macros here.
		//    DO NOT EDIT what you see in these blocks of generated code!
	//}}AFX_MSG_MAP
	// Standard printing commands
	ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
	ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMdiFFTView construction/destruction

CMdiFFTView::CMdiFFTView()
{
	// TODO: add construction code here

}

CMdiFFTView::~CMdiFFTView()
{
}

BOOL CMdiFFTView::PreCreateWindow(CREATESTRUCT& cs)
{
	// TODO: Modify the Window class or styles here by modifying
	//  the CREATESTRUCT cs

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CMdiFFTView drawing

void CMdiFFTView::OnDraw(CDC* pDC)
{
	CMdiFFTDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	CPen pRed,pBlue,pGreen;
	  pRed.CreatePen(PS_SOLID,1,RGB(245,0,0));
	 pBlue.CreatePen(PS_SOLID,1,RGB(0,0,250));
	pGreen.CreatePen(PS_SOLID,1,RGB(0,200,0));
	
	int i,md=1<<pDoc->m_power;
	const int fonH=18;		//文字高度

	pDC->SelectObject(pGreen);
	pDC->TextOut(0,0,"原序列");
	for(i=0;i<md;i++)
	{
		pDC->MoveTo(i,100+fonH);
		pDC->LineTo(i,floor(100+fonH-pDoc->source[i].Re));
		
	}

	pDC->SelectObject(pRed);
	pDC->TextOut(0,200+fonH,"两次变换后的序列");
	for(i=0;i<md;i++)
	{
		pDC->MoveTo(i,300+fonH*2);
		pDC->LineTo(i,floor(300+fonH*2-pDoc->afterifft[i].Re));
	}
	////////afterfft////////////////
	RECT lpRect;
	this->GetClientRect(&lpRect);
	long double zoom = (lpRect.bottom - lpRect.top) / pDoc->m_amax;		//放大倍数
	int vcenter = (lpRect.bottom + lpRect.top) / 2;						//中心位置

	
	pDC->SelectObject(pBlue);
	pDC->TextOut(450,0,"频谱");
	for(i=0;i<md;i++)
	{
		pDC->MoveTo(i+400,vcenter);
		pDC->LineTo(i+400,floor(vcenter-pDoc->afterfft[i].abs()*zoom));
	}

}

/////////////////////////////////////////////////////////////////////////////
// CMdiFFTView printing

BOOL CMdiFFTView::OnPreparePrinting(CPrintInfo* pInfo)
{
	// default preparation
	return DoPreparePrinting(pInfo);
}

void CMdiFFTView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add extra initialization before printing
}

void CMdiFFTView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
	// TODO: add cleanup after printing
}

/////////////////////////////////////////////////////////////////////////////
// CMdiFFTView diagnostics

#ifdef _DEBUG
void CMdiFFTView::AssertValid() const
{
	CView::AssertValid();
}

void CMdiFFTView::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}

CMdiFFTDoc* CMdiFFTView::GetDocument() // non-debug version is inline
{
	ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMdiFFTDoc)));
	return (CMdiFFTDoc*)m_pDocument;
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMdiFFTView message handlers

void CMdiFFTView::OnUpdate(CView* pSender, LPARAM lHint, CObject* pHint) 
{
	// TODO: Add your specialized code here and/or call the base class
	Invalidate();
	
}