//-------------------------------------------------------------------------------------------------------+
// Copyright (C), 1998-2007, Beijing Tangent Software Co. Ltd.
// = FileName	:   TPGeFitTriangle 类
// = Version	:   ver2.0
// = Author		:   wlw
// = CreateDate	:   2002-09-09
// = Description:   TPGeFitTriangle 定义
// = Maintainers: 
//                  
//-------------------------------------------------------------------------------------------------------+
#include "StdAfx.h"
#include "TPGeFitTriangle.h"
#include "TGTriangle2D.h"

TPGeFitTriangle::TPGeFitTriangle(TPGeDscEdge*p0,TPGeDscEdge*p1,TPGeDscEdge*p2)
	: pEdge0(p0),pEdge1(p1),pEdge2(p2)
{

}

TPGeFitTriangle::~TPGeFitTriangle()
{
	
}


bool TPGeFitTriangle::operator >(const TPGeFitTriangle&) const
{
	return false;
}

bool TPGeFitTriangle::operator <(const TPGeFitTriangle&) const
{
	return false;
}

bool TPGeFitTriangle::IsParentTriangle()
{
	TGTriangle2D*pTrg2D = CreateTriangle();
	TList<TPGeDscPoint*> otherPoint;

	TPGeDscPoint *pPt0 = pEdge0->pPt0;
	pPt0->GetConnectPoint(otherPoint);
	
	for(otherPoint.MoveToFirst();!otherPoint.IsOut();otherPoint.MoveToNext())
	{
		GRelation r = pTrg2D->HitTest(*(otherPoint.GetCurData()));
		if(r.Is(GR_IN) && r.IsNot(GR_EDGE))
		{
			delete pTrg2D;
			return true;
		}
	}
	
	delete pTrg2D;
	return false;
}

TGTriangle2D* TPGeFitTriangle::CreateTriangle()
{
	TPGeDscPoint* pPt0 = pEdge0->pPt0, *pPt1 = pEdge0->pPt1,*pPt2;
	if(pEdge1->pPt0 == pPt0 || pEdge1->pPt0 == pPt1)
	{
		pPt2 = pEdge1->pPt1;
	}
	else
	{
		pPt2 = pEdge1->pPt1;
	}
	return new TGTriangle2D(*pPt0,*pPt1,*pPt2);
}

void TPGeFitTriangle::GetFitEdge(double z,TPDList<TPGeDscEdge>&res)
{
	if(UPEQUAL_ZERO(pEdge0->GetMinZ() - z) &&
	   UPEQUAL_ZERO(pEdge1->GetMinZ() - z) && 
	   UPEQUAL_ZERO(pEdge2->GetMinZ() - z))
	{
		return;
	}
	
	if(pEdge0->pPtFit != NULL && pEdge1->pPtFit != NULL && pEdge0->pPtFit != pEdge1->pPtFit)
	{
		res << new TPGeDscEdge(pEdge0->pPtFit,pEdge1->pPtFit);
	}
	else if(pEdge1->pPtFit != NULL && pEdge2->pPtFit != NULL && pEdge1->pPtFit != pEdge2->pPtFit)
	{
		res << new TPGeDscEdge(pEdge1->pPtFit,pEdge2->pPtFit);
	}
	else if(pEdge2->pPtFit != NULL && pEdge0->pPtFit != NULL && pEdge2->pPtFit != pEdge0->pPtFit)
	{
		res << new TPGeDscEdge(pEdge2->pPtFit,pEdge0->pPtFit);
	}
}