www.pudn.com > DrawVector.rar > Line.cpp

// Line.cpp: implementation of the CLine class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "Draw.h" 
#include "Line.h" 
//#include "DrawDoc.h" 
//#include "Data.h" 
 
#include "math.h" 
 
#ifdef _DEBUG 
#undef THIS_FILE 
static char THIS_FILE[]=__FILE__; 
#define new DEBUG_NEW 
#endif 
 
//extern CGraphPara *p_GraphPara; 
////////////////////////////////////////////////////////////////////// 
// Construction/Destruction 
////////////////////////////////////////////////////////////////////// 
 
//CLine::CLine() 
//{ 
 
//} 
extern BOOL IsRectCross(float minx,float miny,float maxx,float maxy); 
void CLine::Draw(CDC* pDC,int m_DrawMode,int m_DrawModel,short BackColor) 
{ 
	int x1,y1,x2,y2; 
	if(b_Delete) 
		return ; 
	float minx,miny,maxx,maxy; 
	GetRect(&minx,&miny,&maxx,&maxy);//得到边界矩形 
	if(!IsRectCross(minx,miny,maxx,maxy))//如果边界矩形不与屏幕窗口相交 
	{ 
		return; 
	} 
	short LineType=m_LineType; 
	short LineWide=max(1,DLtoVL(m_LineWide)); 
	short ColorPen=m_ColorPen; 
	if(m_DrawModel==1) 
	{ 
		if(m_LineType!=2) 
			LineType=2; 
		else 
			LineType++; 
	} 
	if(m_DrawModel==2) 
	{ 
		ColorPen=BackColor; 
	} 
	CGraphPara m_GraphPara; 
    CGraphPara *p_GraphPara; 
	p_GraphPara=&m_GraphPara; 
 
	CPen pen(LineType,LineWide,p_GraphPara->GetColor(ColorPen)); 
	CPen* pOldPen=pDC->SelectObject(&pen); 
	if(m_DrawMode==0) 
	{ 
		pDC->SetROP2(R2_COPYPEN); 
	} 
	else if(m_DrawMode==1) 
		pDC->SetROP2(R2_NOT); 
	DPtoVP(m_X1,m_Y1,&x1,&y1); 
	DPtoVP(m_X2,m_Y2,&x2,&y2); 
	pDC->MoveTo(x1,y1); 
	pDC->MoveTo(x2,y2); 
	pDC->SelectObject(pOldPen); 
} 
void CLine::GetRect(float* minX,float* minY,float* maxX,float* maxY) 
{ 
	*minX=min(m_X1,m_X2); 
	*maxX=max(m_X1,m_X2); 
	*minY=min(m_Y1,m_Y2); 
	*minY=min(m_Y1,m_Y2); 
} 
 
void CLine::CalLong() 
{ 
	m_fLong=sqrt((m_X1-m_X2)*(m_X1-m_X2)+(m_Y1-m_Y2)*(m_Y1-m_Y2)); 
} 
BOOL CLine::IsPoint(float x,float y,float j1,float blc) 
{ 
	float xx,x1,y1,x2,y2; 
	if(b_Delete) 
		return FALSE; 
	GetRect(&x1,&y1,&x2,&y2); 
	if(!(x>=x1&&x<=x2&&y>=y1&&y<=y2)) 
		return FALSE; 
	xx=PointLine(x,y,m_X1,m_Y1,m_X2,m_Y2); 
	if(xxm_X1,&this->m_Y1); 
	RotatePoint(baseX,baseY,angle,&this->m_X2,&this->m_Y2); 
 
} 
 
CLine::~CLine() 
{ 
 
}