circle.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

///////////////////////////////////////////////////////////
//  Circle.cpp
//  Implementation of the Class Circle
//  Created on:      18-二月-2009 17:17:26
//  Original author: pangyj
///////////////////////////////////////////////////////////
#include "StdAfx.h"

#include "Circle.h"


Circle::~Circle(){

}
Circle::Circle():GeometryPrimitive(){

}

Circle::Circle(float r, const Point2D& center):GeometryPrimitive(),centerPt(center),dRadius(r){

}


void Circle::center(const Point2D & pt){
	this->centerPt = pt;

}


const Point2D & Circle::center()const{

	return  this->centerPt;
}


void Circle::radius(double r){
	this->dRadius = r;

}
double Circle::radius()const
{
	return this->dRadius;
}

ErrorStatus Circle::read(fstream& f){

	return  eOk;
}


ErrorStatus Circle::write(fstream& f){

	return  eOk;
}
void Circle::list()const
{
	cout<<"========================="<<endl;
	cout<<"type=Circle  ";
	GeometryPrimitive::list();
	EntityObject::list();
	printf("center Point=(%.3f,%.3f)  radius=%.3f\n",centerPt.x,centerPt.y,dRadius);
}