circle.cpp

MFC简易绘图

// Circle.cpp: implementation of the CCircle class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "DrawSemple.h"
#include "Circle.h"
#include "math.h"

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

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////
int CCircle::Ccount=0;
//int CCircle::Tflag=3;
CCircle::CCircle()
{

}

CCircle::~CCircle()
{

}

CCircle::CCircle(CPoint pt1,CPoint pt2,int stline,COLORREF linergb,COLORREF brushrgb
				 ):CTuyuan(pt1,pt2,stline,linergb,brushrgb)
{
	Tflagc=3;
}

void CCircle::DrawTuyuan(CDC *pDC)
{
	CPen *pOldPen,*pNewPen;
	pDC->SetROP2(R2_NOTXORPEN);
	pNewPen=new CPen(PS_SOLID,styline,stylinergb);
	pOldPen = pDC->SelectObject(pNewPen);	
	int d,x,y;
	d=(int)sqrt((m_pt1.x-m_pt2.x)*(m_pt1.x-m_pt2.x)+(m_pt1.y-m_pt2.y)*(m_pt1.y-m_pt2.y))/2;
	x=(int)(m_pt1.x+m_pt2.x)/2;
	y=(int)(m_pt1.y+m_pt2.y)/2;
	pDC->Ellipse(x-d,y-d,x+d,y+d);
	pDC->SelectObject(pOldPen);
	delete pNewPen;
	Ccount++;
	Tcount++;
}

void CCircle::BrushTuyuan(CDC *pDC)
{
	if(stybrushrgb!=RGB(255,255,255))
	{
		CBrush *pOldBrush,*pNewBrush;
		pDC->SetROP2(R2_NOTXORPEN);
		pNewBrush=new CBrush(stybrushrgb);
		pOldBrush = pDC->SelectObject(pNewBrush);	
		int d,x,y;
		d=(int)sqrt((m_pt1.x-m_pt2.x)*(m_pt1.x-m_pt2.x)+(m_pt1.y-m_pt2.y)*(m_pt1.y-m_pt2.y))/2;
		x=(int)(m_pt1.x+m_pt2.x)/2;
		y=(int)(m_pt1.y+m_pt2.y)/2;
		pDC->Ellipse(x-d,y-d,x+d,y+d);
		pDC->SelectObject(pOldBrush);
		delete pNewBrush;
	}
}

int CCircle::GetTflag()
{
	return 3;
}