thridline.h

电子画图板

//类定义
class ThridLine:public Shape{	//继承于Shape类
	DECLARE_SERIAL(SecondLine) 
private:
	double a;		//三次函数参数a	  (y=a*x^3+b*x^2+c*x+d)
	double b;		//三次函数参数b   (y=a*x^3+b*x^2+c*x+d)
	double c;		//三次函数参数c   (y=a*x^3+b*x^2+c*x+d)
	double d;
public:
	ThridLine();
	ThridLine(double a,double b,double c,double d);
	~ThridLine();
public:
	virtual void drawShape(CDC *pDC,Coordinate co);		//画三次函数
	virtual void Serialize(CArchive& ar);				//串行化
};