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

// Pline.cpp: implementation of the CPline class. 
// 
////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "Draw.h" 
#include "Pline.h" 
#include "DrawDoc.h" 
#include "math.h" 
 
#ifdef _DEBUG 
#undef THIS_FILE 
static char THIS_FILE[]=__FILE__; 
#define new DEBUG_NEW 
#endif 
 
////////////////////////////////////////////////////////////////////// 
// Construction/Destruction 
////////////////////////////////////////////////////////////////////// 
extern IsRectCross(float minx,float miny,float maxx,float maxy); 
 
CPline::CPline(); 
 
void CPline::Draw(CDC* pDC,int m_DrawMode,int m_DrawModel,short BackColor) 
{ 
	int x1,y1; 
	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++; 
	} 
	else 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); 
	POINT* ppoint=new POINT[m_Numble+1]; 
	for(int i=0;iMoveTo(x1,y1); 
		else 
			pDC->LineTo(x1,y1); 
	} 
	pDC->SelectObject(pOldPen); 
} 
 
void CPline::CalLong() 
{ 
	m_fLength=0; 
	for(int i=0;im_Numble-1;i++) 
	{ 
		m_fLength+=sqrt((m_PointList[i].x-m_PointList[i+1].x)*(m_PointList[i].x-m_PointList[i+1].x)+ 
			(m_PointList[i].y-m_PointList[i+1].y)*(m_PointList[i].y-m_PointList[i+1].y)); 
	} 
} 
void CPline::GetRect(float* minX,float* minY,float* maxX,float* maxY) 
{ 
	float x1,y1,x2,y2; 
	//用第一个顶点的坐标初始化变量 
	x1=m_PointList[0].x; 
	x2=m_PointList[0].y; 
	y1=m_PointList[0].x; 
	y2=m_PointList[0].y; 
	for(int i=1;i=x1-j1&&x<=x2+j1&&y>=y1-j1&&y<=y2+j1)) 
		return FALSE; 
	for(i=0;im_Numble;i++) 
	{ 
		RotatePoint(baseX,baseY,angle,&m_PointList[i].x,&m_PointList[i].y); 
	} 
} 
 
 
CPline::~CPline();