#pragma once
#include "ADSGePoint3d.h"
#include "Ge3DFace.h"

#define SIDE1_INVISIBLE 0x01
#define SIDE2_INVISIBLE 0x02
#define SIDE3_INVISIBLE 0x04

// 用三角形拼多边形
class GeTriangle 
{
public:
	
	GeTriangle(const ADSGePoint3d &pt1, const ADSGePoint3d &pt2, const ADSGePoint3d &pt3, int nFlag=0);
	virtual ~GeTriangle();
	
	void Ecs2Wcs(TVector3D vtEcs);
	void Wcs2Ecs(TVector3D vtEcs);

	void AsFace(Ge3DFace &face) const;
	
	int IsLinear();
	int IsInvisible();
	
	// 1~3－命中1～3点；-1~-3 －命中1~3边；0－外部；4－内部
	int HitTest2d(const ADSGePoint3d &ptTest) const;
	
	enum HitType
	{
		HIT_SIDE1 = -1,				//边1
		HIT_SIDE2 = -2,				//边2
		HIT_SIDE3 = -3,				//边3
		
		HIT_OUTSIDE = 0,			//外部
		
		HIT_VERTEX1 = 1,			//顶点1
		HIT_VERTEX2 = 2,			//顶点2
		HIT_VERTEX3 = 3,			//顶点3
		
		HIT_INSIDE = 4				//内部
	};
	
public:
	
	int m_nFlag; 
	
	ADSGePoint3d vertex1, vertex2, vertex3;
};