piantview.cpp

这个软件是可以实现简单的椭圆和点、以及直线的绘图程序

// PiantView.cpp : implementation of the CPiantView class
//

#include "stdafx.h"
#include "Piant.h"

#include "PiantDoc.h"
#include "PiantView.h"

#include "SettingDlg.h"

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

/////////////////////////////////////////////////////////////////////////////
// CPiantView

IMPLEMENT_DYNCREATE(CPiantView, CView)

BEGIN_MESSAGE_MAP(CPiantView, CView)
	//{{AFX_MSG_MAP(CPiantView)
	ON_COMMAND(IDM_DOT, OnDot)
	ON_COMMAND(IDM_LINE, OnLine)
	ON_COMMAND(IDM_RECT, OnRect)
	ON_COMMAND(IDM_ELLIPSE, OnEllipse)
	ON_WM_LBUTTONDOWN()
	ON_WM_LBUTTONUP()
	ON_COMMAND(IDM_SETTING, OnSetting)
	ON_COMMAND(IDM_COLOR, OnColor)
	ON_COMMAND(BEZIER, OnBEZIER)
	//}}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()

/////////////////////////////////////////////////////////////////////////////
// CPiantView construction/destruction

CPiantView::CPiantView()
{    
	//成员函数的初始化
	// TODO: add construction code here
    m_nDrawType=0;
	m_ptOrigin=0; 
	m_nLineWidth=0;
	m_nLineStyle=0;
	m_clr=RGB(0,0,0);
}

CPiantView::~CPiantView()
{
}

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

	return CView::PreCreateWindow(cs);
}

/////////////////////////////////////////////////////////////////////////////
// CPiantView drawing

void CPiantView::OnDraw(CDC* pDC)
{
	CPiantDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	// TODO: add draw code for native data here
}

/////////////////////////////////////////////////////////////////////////////
// CPiantView printing

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CPiantView diagnostics

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

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

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

/////////////////////////////////////////////////////////////////////////////
// CPiantView message handlers

void CPiantView::OnDot() 
{
	// TODO: Add your command handler code here
	m_nDrawType=1;
}

void CPiantView::OnLine() 
{
	// TODO: Add your command handler code here
	m_nDrawType=2;
}

void CPiantView::OnRect() 
{
	// TODO: Add your command handler code here
	m_nDrawType=3;
}

void CPiantView::OnEllipse() 
{
	// TODO: Add your command handler code here
	m_nDrawType=4;
}

void CPiantView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	m_ptOrigin=point;
	CView::OnLButtonDown(nFlags, point);
}

void CPiantView::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	CClientDC dc(this);
	CPen pen(m_nLineStyle,m_nLineWidth,m_clr);
	dc.SelectObject(&pen);
	CBrush *pBrush=CBrush::FromHandle((HBRUSH)GetStockObject(NULL_BRUSH));
	dc.SelectObject(pBrush);
	//根据绘图类型的选择画不同类型的图形
	switch(m_nDrawType)
	{
	case 1:
		dc.SetPixel(point,m_clr);//设置象素点颜色为红色
		break;
	case 2: //画直线
		dc.MoveTo(m_ptOrigin);
		dc.LineTo(point);
		break;
	case 3: //画矩形
		dc.Rectangle(CRect(m_ptOrigin,point));
		break;
	case 4:  //画椭圆
		dc.Ellipse(CRect(m_ptOrigin,point));
		break;
	}
	CView::OnLButtonUp(nFlags, point);
}

void CPiantView::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default

	CView::OnMouseMove(nFlags, point);
}

void CPiantView::OnSetting() 
{
	// TODO: Add your command handler code here
	CSettingDlg dlg;
	dlg.m_nLineWidth=m_nLineWidth;
	dlg.m_nLineStyle=m_nLineStyle;//将值传回编辑框中
	if(IDOK==dlg.DoModal())
	{
	  m_nLineWidth=dlg.m_nLineWidth; 
	  m_nLineStyle=dlg.m_nLineStyle;
	}
}

void CPiantView::OnColor() 
{
	// TODO: Add your command handler code here
	CColorDialog dlg;
	if(IDOK==dlg.DoModal())
	{
		m_clr=dlg.m_cc.rgbResult;
	}
}

void CPiantView::OnBEZIER() 
{
	// TODO: Add your command handler code here
    double Qx[10],Qy[10];
	int i,k,l;

	double Px[10]={1,2,3,4,5,6,7,8,9,10};
    double Py[10]={10,9,8,7,6,5,4,3,2,1};
    double u[10]={0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,0.25};


	for(i=0;i<10;i++)
	{
		Qx[10]=Px[10];
		Qy[10]=Py[10];
	}

	for(l=1;l<10;l++)
		for(k=1;k<10;k++)
			for(i=0;i<10;k++)
			{
				Qx[i]=(1.0-u)*Qx[i]+u*Qx[i+1];
				Qy[i]=(1.0-u)*Qy[i]+u*Qy[i+1];
			}
			
	



		




	
}