zywview.h

提供直线的三种算法；提供圆的算法；提供画任意圆弧的算法

// zywView.h : interface of the CZywView class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_ZYWVIEW_H__EF3625D6_B566_42FD_8BCE_F16C4F7C5F4B__INCLUDED_)
#define AFX_ZYWVIEW_H__EF3625D6_B566_42FD_8BCE_F16C4F7C5F4B__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#define PI 3.1415

class CZywView : public CView
{
protected: // create from serialization only
	CZywView();
	DECLARE_DYNCREATE(CZywView)

// Attributes
public:
	CZywDoc* GetDocument();

// Operations
public:

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CZywView)
	public:
	virtual void OnDraw(CDC* pDC);  // overridden to draw this view
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	protected:
	virtual BOOL OnPreparePrinting(CPrintInfo* pInfo);
	virtual void OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo);
	virtual void OnEndPrinting(CDC* pDC, CPrintInfo* pInfo);
	//}}AFX_VIRTUAL

// Implementation
public:
	virtual ~CZywView();
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

protected:

// Generated message map functions
protected:
	//{{AFX_MSG(CZywView)
	afx_msg void OnDdaline();
	afx_msg void OnBresenhamline();
	afx_msg void OnMidpointline();
	afx_msg void OnSize(UINT nType, int cx, int cy);
	afx_msg void OnCircleb();
	afx_msg void OnCircleany();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
private:
	int m_winSizeX,m_winSizeY;
	int m_disPlay;                      //0:DDA   1:BRESENHAM    2:MIDPOINT
	long begin, end,timeUse1,timeUse2,timeUse3;
	int s[2];
	void DDAline(int x1, int y1, int x2, int y2, CDC* pDC);
	void Bline(int x1, int y1, int x2, int y2, CDC* pDC);
	void MidPointline(int x1, int y1, int x2, int y2, CDC* pDC);
    void BresenhamCircle(int r,CDC *pDC);
    void BresenhamCircleAny(int r,int R,int Q,CDC *pDC);
	void quadrant(int x,int y,int *s);
};

#ifndef _DEBUG  // debug version in zywView.cpp
inline CZywDoc* CZywView::GetDocument()
   { return (CZywDoc*)m_pDocument; }
#endif

/////////////////////////////////////////////////////////////////////////////

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_ZYWVIEW_H__EF3625D6_B566_42FD_8BCE_F16C4F7C5F4B__INCLUDED_)