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

ads_real TGGeCurveSegunique::minLen = 100.0;
TDPtrList<TGGeCurveSegunique> TGGeCurveSegunique::GlobalCurveList;

TGGeCurveSegunique::TGGeCurveSegunique(const TGGeCurveSegment &seg)
	: TGGeCurveSegment(seg), segments(seg.GetStartPoint(), seg.GetEndPoint(), seg.GetBulge())
{
	SetLineFlag(LS_FINITE);
}

TGGeCurveSegunique::~TGGeCurveSegunique()
{

}

void TGGeCurveSegunique::DivideToSegments()
{
	TADSGePoint3d &ptHead = *segments.Head();
	TADSGePoint3d &ptTail = *segments.Tail();
	TADSGePoint3d ptNewHead = ptHead, ptNewTail = ptTail;
	int bHeadOnOtherCurve = 0, bTailOnOtherCurve = 0;
	
	for (int i = 0; i < TGGeCurveSegunique::GlobalCurveList.Length(); i++) 
	{
		TGGeCurveSegunique *pSeg = TGGeCurveSegunique::GlobalCurveList[i];
		if (this == pSeg) 
		{
			continue;         
		}

		TGGeCurveSegment &ln = *pSeg;
		
		// 判断当前线的端点是否位于其他线上
		int nPrFlagHead = ptHead & ln;
		int nPrFlagTail = ptTail & ln;
		if (nPrFlagHead == PR_INSIDE || nPrFlagHead == PR_ONPT1 || nPrFlagHead == PR_ONPT2)
		{
			bHeadOnOtherCurve = 1;
		}

		if (nPrFlagTail == PR_INSIDE || nPrFlagTail == PR_ONPT1 || nPrFlagTail == PR_ONPT2)
		{
			bTailOnOtherCurve = 1;
		}
		
		TADSGePoint3d inPt[2];
		int num = 0;
		{   
			num=Intersection(ln, inPt[0], inPt[1]);
		}

		for (int n = 0; n < num; n++) 
		{
            int ins = 0;
			
			if (ads_distance(ptHead,inPt[n]) < minLen) 
			{
				if (!bHeadOnOtherCurve)
				{
					ptNewHead = inPt[n];
				}
			}
			else if (ads_distance(ptTail,inPt[n]) < minLen) 
			{
				if (!bTailOnOtherCurve)
				{
					ptNewTail = inPt[n];
				}
			}
			else
			{
				ins = 1;				//交点位于中间
			}

            if (ins) 
			{
				segments.Insert(inPt[n]);
			}
		}
	}
	
	if (!Is(CURVE_CIRCLE)) 
	{
        if (!bHeadOnOtherCurve) 
		{
			ptHead = ptNewHead;
		}

        if (!bTailOnOtherCurve)
		{
			ptTail = ptNewTail;
		}
	}
}