fengcheview.cpp

MFC课程里的一个作业

// FengcheView.cpp : implementation of the CFengcheView class
//

#include "stdafx.h"
#include "Fengche.h"

#include "FengcheDoc.h"
#include "FengcheView.h"
#include<math.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CFengcheView

IMPLEMENT_DYNCREATE(CFengcheView, CView)

BEGIN_MESSAGE_MAP(CFengcheView, CView)
	//{{AFX_MSG_MAP(CFengcheView)
		// 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()

/////////////////////////////////////////////////////////////////////////////
// CFengcheView construction/destruction

CFengcheView::CFengcheView()
{
	// TODO: add construction code here
	nNum = 0 ;
	nMaxNum = 20 ;
	fAngle = 0 ;
	nCentreX  = 0 ;
	nCentreY = 0 ;

}

CFengcheView::~CFengcheView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CFengcheView drawing
#define pi 3.1415926
void CFengcheView::OnDraw(CDC* pDC)
{
	CFengcheDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
	CPen pen ;
	CBrush brush ;
	pen.CreatePen(PS_DOT,1,RGB(0,0,0));
//	pDC->SetMapMode(MM_ANISOTROPIC);
	pDC->SetWindowOrg(0,0);
	pDC->SetWindowExt(400,300) ;
	//pDC->SetViewportExt(600,450);
	pDC->Ellipse(100,100,300,300);
	DeleteObject(pen) ;

	nNum = nNum%20 ;
	//brush.CreateHatchBrush(HS_BDIAGONAL,RGB(255,0,0));
	//brush.CreateHatchBrush(PS_DOT,RGB(255,0,0));
	brush.CreateSolidBrush(RGB(255,0,0));
	fAngle = 2*pi/nMaxNum*nNum ;
	nCentreX = (int)(50*cos(fAngle));
	nCentreY = (int)(50*sin(fAngle));
	pDC->Pie(nCentreX-50,nCentreY-50,
		nCentreX+50,nCentreY+50,
	    (int)(nCentreX+50*cos(fAngle)),(int)(nCentreY+50*sin(fAngle)),
		(int)(nCentreX+50*cos(fAngle+pi)),(int)(nCentreY+50*sin(fAngle+pi)));

	//brush.CreateHatchBrush(HS_BDIAGONAL,RGB(255,255,0));
	brush.CreateSolidBrush(RGB(255,255,0));
	nCentreX = (int)(50*cos(fAngle+2*pi/3));
	nCentreY = (int)(50*sin(fAngle+2*pi/3));
	pDC->Pie(nCentreX-50,nCentreY-50,
		nCentreX+50,nCentreY+50,
		(int)(nCentreX+50*cos(fAngle+2*pi/3)),(int)(nCentreY+50*sin(fAngle+2*pi/3)),
		(int)(nCentreX+50*cos(fAngle+pi+2*pi/3)),(int)(nCentreY+50*sin(fAngle+pi+2*pi/3)));

	//brush.CreateHatchBrush(HS_BDIAGONAL,RGB(0,255,255));
	brush.CreateSolidBrush(RGB(0,255,255));
	nCentreX = (int)(50*cos(fAngle+4*pi/3));
	nCentreY = (int)(50*sin(fAngle+4*pi/3));
	pDC->Pie(nCentreX-50,nCentreY-50,
		nCentreX+50,nCentreY+50,
		(int)(nCentreX+50*cos(fAngle+4*pi/3)),(int)(nCentreY+50*sin(fAngle+4*pi/3)),
		(int)(nCentreX+50*cos(fAngle+pi+4*pi/3)),(int)(nCentreY+50*sin(fAngle+pi+4*pi/3)));
	//DeleteObject(brush);

	nNum++;
	Sleep(100);
	Invalidate();
	
}

/////////////////////////////////////////////////////////////////////////////
// CFengcheView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CFengcheView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CFengcheView message handlers