envi-code/SourceCode/Code2026/AdsXRx/XDcClip.cpp

//-----------------------------------------------------------------------------+
// Copyright (C), 1998-2007, SH Software Co. Ltd.
// = FileName	:   XDcClip 类
// = Version	:   ver2.0
// = Author		:   zjq
// = CreateDate	:   2002-09-09
// = Description:   XDcClip 定义
// = Maintainers: 
//                  
//-----------------------------------------------------------------------------+
#include "StdAfx.h"
#include "XDcClip.h"
#include "XConfigBase.h"
#include "XGlobalCurveFunc.h"
#include "XPrivateGlobalFunc.h"
#include "XCurveInline.h"

XDcClip::XDcClip(const XPoly2D& poly,int flag)
: m_poly(poly), m_clipType(flag)
{
	if ((m_clipType & XDcClip::kAcGiClip) != 0)
	{
		m_pAcGiClip = new AcGiClipBoundary;
		
		m_pAcGiClip->m_bDrawBoundary =  false;
		m_pAcGiClip->m_vNormal = AcGeVector3d::kZAxis;
		m_pAcGiClip->m_ptPoint = AcGePoint3d::kOrigin;
		
		for (long i = 0;i<poly.Length();i++)
		{
			m_pAcGiClip->m_aptPoints.append(poly[i].AsAcGePoint2d());
		}
		
		m_pAcGiClip->m_xToClipSpace.setToIdentity();
		m_pAcGiClip->m_xInverseBlockRefXForm.setToIdentity();
		
		m_pAcGiClip->m_bClippingBack = m_pAcGiClip->m_bClippingFront = false;
		m_pAcGiClip->m_dFrontClipZ = m_pAcGiClip->m_dBackClipZ = 0;
	}
	else
	{
		m_pAcGiClip = NULL;
	}
	m_bExtExtracted = false;
}

XDcClip::~XDcClip()
{
	if (m_pAcGiClip != NULL)
	{
		delete m_pAcGiClip;
		m_pAcGiClip = NULL;
	}
}

AcGiClipBoundary* XDcClip::GetAcGiClip()const
{
	return m_pAcGiClip;
}

int XDcClip::GetClipType()const
{
	return m_clipType;
}

XPoly2D XDcClip::GetClipPoly()const
{
	return m_poly;
}

bool XDcClip::DoClip(DList<XCurveSegment> &lstCurve)const
{
	DList<XCurveSegment> lstIn,lstOut,lstEdge;
	PolyClip(lstCurve,m_poly,lstIn,lstOut,lstEdge);
	lstCurve.Reset();
	
	if ((m_clipType & XDcClip::kClipOut) != 0)
	{
		lstCurve << lstIn;
	}
	else
	{
		lstCurve << lstOut;
	}
	
	if ((m_clipType & XDcClip::kNoClipEdge) != 0)
	{
		lstCurve << lstEdge;
	}
	return (lstIn.Length() > 0 || lstOut.Length() > 0) ? true : false;
}

bool XDcClip::DoClip(DList<XPoly2D> &lstRegion)const
{
	DList<XPoly2D> lstRes;
	
	for (long i = 0; i < lstRegion.Length(); i++)
	{
		const XPoly2D& poly = *lstRegion[i];
		
		if ((m_clipType & XDcClip::kClipOut) != 0)
		{
			if ( XPrivate::GetGlobalConfigBase() != NULL)
			{
				XPrivate::GetGlobalConfigBase()->BoolOper(AcDb::kBoolIntersect,(LPVOID)&poly,(LPVOID)&m_poly,(LPVOID)&lstRes);
			}
		}
		else
		{
			DList<XPoly2D> buf;
#ifdef NEW_GEOMETRY
			
			if ( XPrivate::GetGlobalConfigBase() != NULL)
			{
				XPrivate::GetGlobalConfigBase()->BoolOper(AcDb::kBoolSubtract,(LPVOID)&poly,(LPVOID)&m_poly,(LPVOID)&buf);
			}
#else
			if (Subtract(poly, m_poly, buf) != RTNORM || buf.Length() == 0)
			{
				buf.Reset();
				Intersect(poly,m_poly,buf);
				
				if (buf.Length() > 0)
				{
					if (poly.Area() > m_poly.Area())
					{
						buf.Append(new XPoly2D(poly));
					}
				}
			}
#endif
			lstRes << buf;
		}
	}
	
	lstRegion.Reset();
	lstRegion << lstRes;
	return lstRes.Length() > 0 ? true : false;
}

bool XDcClip::DoClip(DList<XDcObject> &lstCurve)const
{
	DList<XDcObject> lstIn,lstOut,lstEdge;
	for (long i = 0; i < lstCurve.Length(); i++)
	{
		lstCurve[i]->CutBy(m_poly,lstIn,lstOut,lstEdge);
	}
	
	lstCurve.Reset();
	if ((m_clipType & XDcClip::kClipOut) != 0)
	{
		lstCurve << lstIn;
	}
	else
	{
		lstCurve << lstOut;
	}
	
	if ((m_clipType & XDcClip::kNoClipEdge) != 0)
	{
		lstCurve << lstEdge;
	}
	return (lstIn.Length() > 0 || lstOut.Length() > 0) ? true : false;	
}

bool XDcClip::DoClip(DList<AcDbEntity> &lstEnt)const
{
	DList<AcDbEntity> buf;
	for (long i = 0; i < lstEnt.Length(); i++)
	{
		AcDbEntity *pEnt = lstEnt[i];
		XDcObject *pXEnt = XDcObject::CreateFrom(*pEnt);
		if (pXEnt != NULL)//基本对象
		{
			DList<XDcObject> lstXEnt;
			lstXEnt.Append(pXEnt);
			
			DoClip(lstXEnt);
			for (long j = 0; j < lstXEnt.Length(); j++)
			{
				AcDbEntity *pNewEnt = lstXEnt[j]->CreateAcDbEntity();
				if (pNewEnt != NULL)
				{
					pNewEnt->setPropertiesFrom(pEnt);
					buf.Append(pNewEnt);
				}
			}
		}
		else
		{
			AcDbVoidPtrArray ents;
			pEnt->explode(ents);
			
			for (long j = 0; j < ents.length(); j++)
			{
				lstEnt.Append((AcDbEntity*)ents[j]);
			}
		}
	}
	
	lstEnt.Reset();
	lstEnt << buf;
	return buf.Length() > 0 ? true : false;
}

bool XDcClip::IsClip(const XPoint&pt)const
{
	int iRet = pt & m_poly;
	if (iRet == PR_OUTSIDE && (m_clipType & XDcClip::kClipOut) != 0)		//点在外且裁外部
	{
		return true;
	}
	else if (iRet == PR_INSIDE && (m_clipType & XDcClip::kClipOut) == 0)	//点在内且裁内部
	{
		return true;
	}
	else if (iRet == PR_EDGE && (m_clipType & XDcClip::kNoClipEdge) == 0)//点在边且裁边
	{
		return true;
	}
	
	return false;
}

bool XDcClip::IsExtentsClip(AcDbExtents& ext)
{
	if (!m_bExtExtracted)
	{
		m_poly.GetExtend(m_ptLow,m_ptUpp);
		m_bExtExtracted = true;
	}
	
	AcGePoint3d ptMin = ext.minPoint();
	AcGePoint3d ptMax = ext.maxPoint();
	
	//add by zjq 100513这里精度取大点，防止有线重合时不进行裁剪操作
	if (ptMin.x - m_ptUpp[X] > _DIST_SNAP*3)
	{
		return false;
	}
	
	if (ptMax.x - m_ptLow[X] < -_DIST_SNAP*3)
	{
		return false;
	}
	
	if (ptMin.y - m_ptUpp[Y] > _DIST_SNAP*3)
	{
		return false;
	}
	
	if (ptMax.y - m_ptLow[Y] < -_DIST_SNAP*3)
	{
		return false;
	}
	
	return true;
}