line2d.cpp

我自己写的代码 可能比较简单 我实现了模拟图层的功能

///////////////////////////////////////////////////////////
//  Line2D.cpp
//  Implementation of the Class Line2D
//  Created on:      18-二月-2009 17:17:20
//  Original author: pangyj
///////////////////////////////////////////////////////////
#include "StdAfx.h"

#include "Line2D.h"


Line2D::~Line2D(){

}

Line2D::Line2D():GeometryPrimitive(){

}


Line2D::Line2D(const Point2D& ePt, const Point2D& sPt):GeometryPrimitive(),endPt(ePt),startPt(sPt){

}


const Point2D Line2D::endPoint() const {

	return  endPt;
}


void Line2D::endPoint(const Point2D& pt){
	endPt = pt;

}


ErrorStatus Line2D::read(fstream& f){

	return  eOk;
}


const Point2D Line2D::startPoint() const {

	return  startPt;
}


void Line2D::startPoint(const Point2D& pt){
	startPt = pt;
}


ErrorStatus Line2D::write(fstream& f){

	return  eOk;
}
void Line2D::list()const
{
	cout<<"========================="<<endl;
	cout<<"type=Line2D  ";
	GeometryPrimitive::list();
	EntityObject::list();
	printf("first Point=(%.3f,%.3f)  second Point=(%.3f,%.3f)\n",startPt.x,startPt.y,endPt.x,endPt.y);

}