testview.h

Bresenham算法

// TestView.h : interface of the CTestView class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_TESTVIEW_H__A75FDCFB_621C_4E38_A154_C344803E6372__INCLUDED_)
#define AFX_TESTVIEW_H__A75FDCFB_621C_4E38_A154_C344803E6372__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
#include "InputDlg.h"//包含对话框头文件

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

// Attributes
public:
	CTestDoc* GetDocument();

// Operations
public:
	void GetMaxY();//获得屏幕的最大x值函数
	void GetMaxX();//获得屏幕的最大y值函数
	void EllipsePoint(double x,double y);//四分法绘制椭圆
	void Mbellipse();//椭圆的Bresenham算法
// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CTestView)
	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 ~CTestView();
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

protected:
	int MaxX,MaxY;//屏幕x和y的最大坐标
	double a,b;//椭圆的长半轴和短半轴
// Generated message map functions
protected:
	//{{AFX_MSG(CTestView)
	afx_msg void OnMENUMbellipse();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

#ifndef _DEBUG  // debug version in TestView.cpp
inline CTestDoc* CTestView::GetDocument()
   { return (CTestDoc*)m_pDocument; }
#endif

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

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

#endif // !defined(AFX_TESTVIEW_H__A75FDCFB_621C_4E38_A154_C344803E6372__INCLUDED_)