#pragma once
#ifndef BASE_FUNCTION_EXTEND
#define BASE_FUNCTION_EXTEND

#include "SSBase/DrawModel/BaseFunction.h"

class AFX_EXT_CLASS CBaseFunctionExtend :public CBaseFunction
{
public:
	CBaseFunctionExtend();
	virtual ~CBaseFunctionExtend();

public:
	int		IsSegmentCross(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4);
	int		LineCrossPoint(double x1, double y1, double k1, double x2, double y2, double k2, double& x0, double& y0);

	double	DotProduct(double x1, double y1, double x2, double y2);
	double	CrossProduct(double x1, double y1, double x2, double y2);

	//计算直线与线段的交点，成功返回1，若无，返回0，若重合，返回2.
//参数 a,b为直线向量，lx0,ly0为直线上一点坐标，（sx1,sy1)(sx2,sy2)为线段两端点，若存在交点(cx,cy)为交点坐标
	int		SegLineCrossPoint(double a, double b, double lx0, double ly0,
		double sx1, double sy1, double sx2, double sy2, double& cx, double& cy);

	//计算三角形A(x1,y1) B(x2,y2) C(x3,y3)，顶点B的角平分线与AC边交点(x0,y0)如果ABC共线，求角平分线上距离为1任意一点
	 bool GetAngularBisector(double x1, double y1, double x2, double y2, double x3, double y3, double& x0, double& y0);
};


#endif