bijinview.cpp

自定义一些x,y坐标,可以模拟出一些光滑的曲线

// BiJinView.cpp : implementation of the CBiJinView class
//

#include "stdafx.h"
#include "BiJin.h"

#include "BiJinDoc.h"
#include "BiJinView.h"

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

/////////////////////////////////////////////////////////////////////////////
// CBiJinView

IMPLEMENT_DYNCREATE(CBiJinView, CView)

BEGIN_MESSAGE_MAP(CBiJinView, CView)
	//{{AFX_MSG_MAP(CBiJinView)
	ON_COMMAND(ID_FILE_OPEN, OnFileOpen)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CBiJinView construction/destruction

CBiJinView::CBiJinView()
{
	// TODO: add construction code here
	m_pCoordinate = new CCoordinate;
	m_pFile       = new CStdioFile;
	m_pDestList   = new CPtrList;
}

CBiJinView::~CBiJinView()
{
	delete m_pCoordinate;
	delete m_pFile;
	if(NULL != m_Box)
		delete m_Box;
	for(int i=0;i<m_pDestList->GetCount();i++)
	{
		POSITION pos;
		pos = m_pDestList->FindIndex(i);
		CFoldPoint *pFoldPoint = (CFoldPoint *)m_pDestList->GetAt(pos);
		m_pDestList->RemoveAt(pos);
	}
	m_pDestList->RemoveAll();
	delete m_pDestList;
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CBiJinView drawing

void CBiJinView::OnDraw(CDC* pDC)
{
	CBiJinDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	CRect rc;
	GetClientRect(&rc);
	if(m_pCoordinate->m_pPtrList->GetCount() >= 2)
	{
		int m = m_pCoordinate->m_pPtrList->GetCount();
		m_Box = Box(m_pCoordinate->m_pPtrList,rc);
		CPen myPen,*pOldPen;
		myPen.CreatePen(PS_SOLID,1,RGB(0,0,255));
		pOldPen = pDC->SelectObject(&myPen);
		Draw(pDC,rc,m_pCoordinate->m_pPtrList,m_Box);	
		CBrush myBrush,*pOldBrush;
		myBrush.CreateSolidBrush(RGB(0,255,0));
		pOldBrush = pDC->SelectObject(&myBrush);
		POSITION pos1;
		pos1 = m_pCoordinate->m_pPtrList->FindIndex(0);
		CFoldPoint *pFoldPoint1;
		for(int i=0;i<m_pCoordinate->m_pPtrList->GetCount();i++)
		{
			pFoldPoint1 = (CFoldPoint *)m_pCoordinate->m_pPtrList->GetNext(pos1);
			pDC->Ellipse((long)(m_Box->kX*(pFoldPoint1->x- m_Box->x1)+(rc.right+rc.left)/2)-3,
					(long)((rc.bottom+rc.top)/2- m_Box->kY*(pFoldPoint1->y- m_Box->y1))-3,
					(long)(m_Box->kX*(pFoldPoint1->x- m_Box->x1)+(rc.right+rc.left)/2)+3,
					(long)((rc.bottom+rc.top)/2- m_Box->kY*(pFoldPoint1->y- m_Box->y1))+3);
		}
		pDC->SelectObject(pOldBrush);
		pDC->SelectObject(pOldPen);
		POSITION pos;
		pos = m_pCoordinate->m_pPtrList->FindIndex(0);
		CFoldPoint *pFoldPoint2;
		for(int j=0;j<m_pCoordinate->m_pPtrList->GetCount();j++)
		{
			pFoldPoint2 = (CFoldPoint *)m_pCoordinate->m_pPtrList->GetNext(pos);
			if(pFoldPoint2->m_bLow == true)
				pDC->Ellipse((long)(m_Box->kX*(pFoldPoint2->x- m_Box->x1)+(rc.right+rc.left)/2)-3,
					(long)((rc.bottom+rc.top)/2- m_Box->kY*(pFoldPoint2->y- m_Box->y1))-3,
					(long)(m_Box->kX*(pFoldPoint2->x- m_Box->x1)+(rc.right+rc.left)/2)+3,
					(long)((rc.bottom+rc.top)/2- m_Box->kY*(pFoldPoint2->y- m_Box->y1))+3);
		}
	}
	if(m_pDestList->GetCount() >=2)
	{
		CPen myPen,*pOldPen;
		myPen.CreatePen(PS_SOLID,1,RGB(255,0,0));
		pOldPen = pDC->SelectObject(&myPen);
		Draw(pDC,rc,m_pDestList,m_Box);
		pDC->SelectObject(pOldPen);
		CFoldPoint *pFoldPoint;
		POSITION pos = m_pCoordinate->m_pPtrList->GetHeadPosition();
		for(int j=0;j<m_pCoordinate->m_pPtrList->GetCount();j++)
		{
			pFoldPoint = (CFoldPoint *)m_pCoordinate->m_pPtrList->GetNext(pos);
			pFoldPoint->NewY = m_pCoordinate->NewY(m_pCoordinate->m_pPtrList,pFoldPoint->x);
			pDC->Ellipse((long)(m_Box->kX*(pFoldPoint->x- m_Box->x1)+(rc.right+rc.left)/2)-3,
					(long)((rc.bottom+rc.top)/2- m_Box->kY*(pFoldPoint->NewY- m_Box->y1))-3,
					(long)(m_Box->kX*(pFoldPoint->x- m_Box->x1)+(rc.right+rc.left)/2)+3,
					(long)((rc.bottom+rc.top)/2- m_Box->kY*(pFoldPoint->NewY- m_Box->y1))+3);
		}
	}
}

/////////////////////////////////////////////////////////////////////////////
// CBiJinView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CBiJinView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CBiJinView message handlers

void CBiJinView::OnFileOpen() 
{
	// TODO: Add your command handler code here
	CFileDialog dlg(TRUE,NULL,NULL,OFN_ALLOWMULTISELECT |
		OFN_FILEMUSTEXIST | OFN_HIDEREADONLY,NULL);
	dlg.m_ofn.lpstrInitialDir = "F:\\a fu\\Spline";
	if(dlg.DoModal() == IDOK)
	{
		m_path = dlg.GetPathName();
		m_pFile->Open(m_path,CFile::modeRead);
		m_pCoordinate->Getcoordinate(m_pFile);
		m_pCoordinate->GetLowest();
		m_pDestList = m_pCoordinate->SPLine(m_pCoordinate->m_pPtrList,20);
	}
	Invalidate(true);
	m_pFile->Close();
}
void CBiJinView::Draw(CDC *pDC,CRect rc,CPtrList *pList,CBox *Box)
{
	POSITION pos = pList->GetHeadPosition();
	CFoldPoint *pFoldPoint = (CFoldPoint *)pList->GetNext(pos);
	for(int j=0;j<pList->GetCount()-1;j++)
	{
		pDC->MoveTo((long)(Box->kX*(pFoldPoint->x - Box->x1)+(rc.right+rc.left)/2),
			(long)((rc.bottom+rc.top)/2 - Box->kY*(pFoldPoint->y - Box->y1)));
		pFoldPoint = (CFoldPoint *)pList->GetNext(pos);
		pDC->LineTo((long)(Box->kX*(pFoldPoint->x - Box->x1)+(rc.right+rc.left)/2),
			(long)((rc.bottom+rc.top)/2 - Box->kY*(pFoldPoint->y - Box->y1)));
	}

}
CBox* CBiJinView::Box(CPtrList *pList,CRect rc)
{	
	CBox *Box = new CBox;
	POSITION pos,pos1;
	pos1 = pos = m_pCoordinate->m_pPtrList->FindIndex(0);
	CFoldPoint *pFoldPoint1;
	pFoldPoint1 = (CFoldPoint *)pList->GetNext(pos);
	Box->XMin = Box->XMax = pFoldPoint1->x;
	Box->YMin = Box->YMax = pFoldPoint1->y;
	for(int i=0;i<pList->GetCount()-1;i++)
	{
		pFoldPoint1 = (CFoldPoint *)pList->GetNext(pos);
		if(pFoldPoint1->x < Box->XMin)
			Box->XMin = pFoldPoint1->x;
		if(pFoldPoint1->x > Box->XMax)
			Box->XMax = pFoldPoint1->x;
		if(pFoldPoint1->y < Box->YMin)
			Box->YMin = pFoldPoint1->y;
		if(pFoldPoint1->y > Box->YMax)
			Box->YMax = pFoldPoint1->y;
	}
	Box->kX = rc.Width()/(Box->XMax - Box->XMin);
	Box->kY = rc.Height()/(Box->YMax - Box->YMin);
	Box->x1 = (Box->XMin + Box->XMax)/2;
	Box->y1 = (Box->YMin + Box->YMax)/2;
	return Box;
}