cdaview.h

Sutherland-Hodgeman多边形裁剪算法：

// CDAView.h : interface of the CCDAView class
//
/////////////////////////////////////////////////////////////////////////////

#if !defined(AFX_CDAVIEW_H__0241BCBC_C159_4806_A8F7_6E76FABD838A__INCLUDED_)
#define AFX_CDAVIEW_H__0241BCBC_C159_4806_A8F7_6E76FABD838A__INCLUDED_

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


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

// Attributes
public:
	CCDADoc* GetDocument();

// Operations
public:
	CPoint vert[100];
	int nvert;
	//CPoint lvert[300];
	//int l;
	//CPoint rvert[300];
	//int r;
	//CPoint bvert[300];
	//int b ;
	CPoint tvert[300];
	int t;
	void draw_polygon();
	void draw_win();
	void draw_clip();
	// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CCDAView)
	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 ~CCDAView();
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

protected:

// Generated message map functions
protected:
	//{{AFX_MSG(CCDAView)
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnPolygon();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

#ifndef _DEBUG  // debug version in CDAView.cpp
inline CCDADoc* CCDAView::GetDocument()
   { return (CCDADoc*)m_pDocument; }
#endif

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

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

#endif // !defined(AFX_CDAVIEW_H__0241BCBC_C159_4806_A8F7_6E76FABD838A__INCLUDED_)