grassview.cpp

VC小波应用 分形和混沌 FRACTAL AND GRASS DEMO

// GrassView.cpp : implementation of the CGrassView class
//

#include "stdafx.h"
#include "Grass.h"

#include "GrassDoc.h"
#include "GrassView.h"
#include "FGrass.h"

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

/////////////////////////////////////////////////////////////////////////////
// CGrassView

IMPLEMENT_DYNCREATE(CGrassView, CView)

BEGIN_MESSAGE_MAP(CGrassView, CView)
	//{{AFX_MSG_MAP(CGrassView)
	ON_WM_CREATE()
	ON_WM_KEYDOWN()
	ON_WM_ERASEBKGND()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CGrassView construction/destruction

CGrassView::CGrassView()
{
	m_pGrass=new CFGrass();
	m_nMaxx=m_nMaxy=500;
	m_nCh='c';
}

CGrassView::~CGrassView()
{
	delete m_pGrass;
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CGrassView drawing

void CGrassView::OnDraw(CDC* pDC)
{
	CPen pen(PS_SOLID,1,RGB(0,255,0));
	CPen *pOld;
	pOld=pDC->SelectObject(&pen);
	m_pGrass->Draw(pDC,m_nCh);
	pDC->SelectObject(pOld);
}

/////////////////////////////////////////////////////////////////////////////
// CGrassView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CGrassView message handlers

int CGrassView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	m_pGrass->Create(100,5,m_nMaxx,m_nMaxy);
	return 0;
}

void CGrassView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	CView::OnKeyDown(nChar, nRepCnt, nFlags);
	m_nCh=nChar;
	Invalidate();
}

BOOL CGrassView::OnEraseBkgnd(CDC* pDC) 
{
	CBrush Brush(RGB(0,0,0));
	CBrush* pOldBrush=pDC->SelectObject(&Brush);
	CRect rcClip;
	pDC->GetClipBox (&rcClip);
	pDC->PatBlt (rcClip.left , rcClip.top , rcClip.Width ( ) , rcClip.Height( ) , PATCOPY );
	pDC->SelectObject (pOldBrush );

	return TRUE;
}